Microchip MCP73213T Dual-cell li-ion / li-polymer battery charge management controller with input overvoltage protection Datasheet

MCP73213
Dual-Cell Li-Ion / Li-Polymer Battery Charge Management
Controller with Input Overvoltage Protection
Features
Description
• Complete Linear Charge Management Controller:
- Integrated Input Overvoltage Protection
- Integrated Pass Transistor
- Integrated Current Sense
- Integrated Reverse Discharge Protection
• Constant Current / Constant Voltage Operation
with Thermal Regulation
• 4.15V Undervoltage Lockout (UVLO)
• 13V Input Overvoltage Protection
• High Accuracy Preset Voltage Regulation
Through Full Temperature Range (-5°C to +55°C):
- + 0.6%
• Battery Charge Voltage Options:
- 8.20V, 8.40V, 8.7V or 8.8V
• Resistor Programmable Fast Charge Current:
- 130 mA - 1100 mA
• Preconditioning of Deeply Depleted Cells:
- Available Options: 10% or Disable
• Integrated Precondition Timer:
- 32 Minutes or Disable
• Automatic End-of-Charge Control:
- Selectable Minimum Current Ratio:
5%, 7.5%, 10% or 20%
- Elapse Safety Timer: 4 HR, 6 HR, 8 HR or
Disable
• Automatic Recharge:
- Available Options: 95% or Disable
• Factory Preset Charge Status Output:
- On/Off or Flashing
• Soft Start
• Temperature Range: -40°C to +85°C
• Packaging: DFN-10 (3 mm x 3 mm)
The MCP73213 is a highly integrated Li-Ion battery
charge management controller for use in space-limited
and cost-sensitive applications. The MCP73213
provides specific charge algorithms for dual-cell Li-Ion
/ Li-Polymer batteries to achieve optimal capacity and
safety in the shortest charging time possible. Along
with its small physical size, the low number of external
components makes the MCP73213 ideally suitable for
portable applications. The absolute maximum voltage,
up to 18V, allows the use of MCP73213 in harsh
environments, such as low cost wall wart or voltage
spikes from plug/unplug.
The MCP73213 employs a constant current / constant
voltage charge algorithm. The various charging voltage
regulations provide design engineers flexibility to use in
different applications. The fast charge, constant current
value is set with one external resistor from 130 mA to
1100 mA. The MCP73213 limits the charge current
based on die temperature during high power or high
ambient conditions. This thermal regulation optimizes
the charge cycle time while maintaining device
reliability.
The PROG pin of the MCP73213 also serves as enable
pin. When high impedance is applied, the MCP73213
will be in standby mode.
The MCP73213 is fully specified over the ambient
temperature range of -40°C to +85°C. The MCP73213
is available in a 10 lead, DFN package.
Package Types (Top View)
MCP73213
3x3 DFN *
VDD 1
VDD 2
VBAT 3
Applications
•
•
•
•
•
•
•
Digital Camcorders
Portable Media Players
Ultra Mobile Personal Computers
Netbook Computers
Handheld Devices
Walkie-Talkie
Low-Cost 2-Cell Li-Ion/Li-Poly Chargers / Cradles
© 2009 Microchip Technology Inc.
VBAT 4
NC 5
10 PROG
EP
11
9 VSS
8 VSS
7 STAT
6 NC
* Includes Exposed Thermal Pad (EP); see Table 3-1.
DS22190A-page 1
MCP73213
Typical Application
MCP73213 Typical Application
1
Ac-dc-Adapter
2
CIN
RLED
7
VDD
VBAT
VBAT
VDD
+
4
COUT
STAT
PROG
5 NC
VSS
6 NC
TABLE 1:
3
VSS
2-Cell
Li-Ion
Battery
10
9
RPROG
8
-
AVAILABLE FACTORY PRESET OPTIONS
Precondition
Timer
Elapse
Timer
End-ofCharge
Control
Automatic
Recharge
Output
Status
66.5% / 71.5%
Disable /
32 Minimum
Disable / 4 HR /
6 HR / 8 HR
5% / 7.5% /
10% / 20%
No /
Yes
Type 1 /
Type 2
Disable / 10%
66.5% / 71.5%
Disable /
32 Minimum
Disable / 4 HR /
6 HR / 8 HR
5% / 7.5% /
10% / 20%
No /
Yes
Type 1 /
Type 2
13V
Disable / 10%
66.5% / 71.5%
Disable /
32 Minimum
Disable / 4 HR /
6 HR / 8 HR
5% / 7.5% /
10% / 20%
No /
Yes
Type 1 /
Type 2
13V
Disable / 10%
66.5% / 71.5%
Disable /
32 Minimum
Disable / 4 HR /
6 HR / 8 HR
5% / 7.5% /
10% / 20%
No /
Yes
Type 1 /
Type 2
Charge
Voltage
OVP
Preconditioning
Charge Current
Preconditioning
Threshold
8.2V
13V
Disable / 10%
8.4V
13V
8.7V
8.8V
Note 1:
2:
3:
4:
5:
6:
IREG: Regulated fast charge current.
VREG: Regulated charge voltage.
IPREG/IREG: Preconditioning charge current; ratio of regulated fast charge current.
ITERM/IREG: End-of-Charge control; ratio of regulated fast charge current.
VRTH/VREG: Recharge threshold; ratio of regulated battery voltage.
VPTH/VREG: Preconditioning threshold voltage.
TABLE 2:
STANDARD SAMPLE OPTIONS
Part
Number
VREG
OVP
IPREG/IREG
Pre-charge
Timer
Elapse
Timer
MCP73213-B6S/MF
8.20V
13V
10%
32 Min.
6 HR
10%
95%
71.5%
Type 1
MCP73213-A6S/MF
8.40V
13V
10%
32 Min.
6 HR
10%
95%
71.5%
Type 1
Note 1:
ITERM/IREG VRTH/VREG VPTH/VREG
Output
Status
Customers should contact their distributor, representatives or field application engineer (FAE) for support and sample.
Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of
this document. Technical support is available through the web site at: http//support.microchip.com
DS22190A-page 2
© 2009 Microchip Technology Inc.
MCP73213
Functional Block Diagram
VOREG
DIRECTION
CONTROL
VBAT
VDD
+
CURRENT
LIMIT
-
VREF
PROG
+
REFERENCE, V
REF (1.21V)
BIAS, UVLO
AND SHDN
VOREG
CA
-
+
UVLO
-
-
PRECONDITION
+
TERM
+
STAT
CHARGE
CONTROL,
TIMER
AND
STATUS
LOGIC
CHARGE
+
VA
-
VSS
13V
+
VDD
Input OverVP
+
Thermal Regulation
© 2009 Microchip Technology Inc.
TSD
95% VREG
+
110°C
VBAT
*Recharge
*Only available on selected options
DS22190A-page 3
MCP73213
NOTES:
DS22190A-page 4
© 2009 Microchip Technology Inc.
MCP73213
1.0
ELECTRICAL
CHARACTERISTICS
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
Absolute Maximum Ratings†
VDD ................................................................................18.0V
VPROG ..............................................................................6.0V
All Inputs and Outputs w.r.t. VSS ............... -0.3 to (VDD+0.3)V
Maximum Junction Temperature, TJ ............ Internally Limited
Storage temperature .....................................-65°C to +150°C
ESD protection on all pins
Human Body Model (1.5 kW in Series with 100 pF) ......≥ 4 kV
Machine Model (200 pF, No Series Resistance) .............300V
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typical) + 0.3V] to 12V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Sym
Min
Typ
Max
Units
Conditions
Input Voltage Range
VDD
4
—
16
V
Operating Supply Voltage
VDD
4.2
—
13
V
Supply Current
ISS
—
4
5.5
µA
Shutdown (VDD < VBAT - 150 mV)
—
700
1500
µA
Charging
—
50
125
µA
Standby (PROG Floating)
—
50
150
µA
Charge Complete; No Battery;
VDD < VSTOP
—
0.5
2
µA
Standby (PROG Floating)
—
0.5
2
µA
Shutdown (VDD < VBAT,
or VDD < VSTOP)
10
17
µA
Charge Complete; VDD is present
Supply Input
Battery Discharge Current
Output Reverse Leakage
Current
IDISCHARGE
Undervoltage Lockout
UVLO Start Threshold
VSTART
4.10
4.15
4.25
V
UVLO Stop Threshold
VSTOP
4.00
4.05
4.10
V
UVLO Hysteresis
VHYS
—
100
—
mV
VOVP
12.8
13
13.2
V
VOVPHYS
—
150
—
mV
8.15
8.20
8.25
V
TA= -5°C to +55°C
8.35
8.40
8.45
V
VDD = [VREG(Typical)+1V]
8.65
8.70
8.75
V
IOUT = 50 mA
Overvoltage Protection
OVP Start Threshold
OVP Hysteresis
Voltage Regulation (Constant Voltage Mode)
Regulated Output Voltage
Options
VREG
8.75
8.80
8.85
V
VRTOL
-0.6
—
0.6
%
Line Regulation
|(ΔVBAT/VBAT)/
ΔVDD|
—
0.05
0.20
%/V
Load Regulation
|ΔVBAT/VBAT|
—
0.05
0.20
%
IOUT = 50 mA - 150 mA
VDD = [VREG(Typical)+1V]
PSRR
—
-46
—
dB
IOUT = 20 mA, 10 Hz to 1 kHz
—
-30
—
dB
IOUT = 20 mA, 10 Hz to 10 kHz
Output Voltage Tolerance
Supply Ripple Attenuation
Note 1:
VDD = [VREG(Typical)+1V] to 12V
IOUT = 50 mA
Not production tested. Ensured by design.
© 2009 Microchip Technology Inc.
DS22190A-page 5
MCP73213
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typical) + 0.3V] to 12V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Sym
Min
Typ
Max
Units
Conditions
BSP Start Threshold
VSHORT
3.1
3.3
3.5
V
BSP Hysteresis
VBSPHYS
-
150
-
mV
ISHORT
-
25
-
mA
—
1100
mA
TA = -5°C to +55°C
Battery Short Protection
BSP Regulation Current
Current Regulation (Fast Charge, Constant-Current Mode)
Fast Charge Current
Regulation
IREG
130
117
130
143
mA
PROG = 10 kΩ
900
1000
1100
mA
PROG = 1.1 kΩ
Preconditioning Current Regulation (Trickle Charge Constant Current Mode)
Precondition Current Ratio
IPREG / IREG
—
10
—
%
PROG = 1 kΩ to 10 kΩ
TA=-5°C to +55°C
—
100
—
%
No Preconditioning
Precondition Voltage
Threshold Ratio
VPTH / VREG
64
66.5
69
%
VBAT Low-to-High
69
71.5
74
%
VPHYS
—
100
—
mV
ITERM / IREG
3.7
5
6.3
%
5.6
7.5
9.4
PROG = 1 kΩ to 10 kΩ
TA=-5°C to +55°C
7.5
10
12.5
15
20
25
93
95.0
97
%
VBAT High-to-Low
No Automatic Recharge
—
0
—
%
RDSON
—
350
—
mΩ
Sink Current
ISINK
—
20
35
mA
Low Output Voltage
VOL
—
0.2
0.5
V
ISINK = 4 mA
Input Leakage Current
ILK
—
0.001
1
μA
High Impedance, VDD on pin
Charge Impedance Range
RPROG
1
—
22
kΩ
Shutdown Impedance
RPROG
—
200
—
kΩ
Automatic Power Down
Entry Threshold
VPDENTRY
VBAT +
10 mV
VBAT +
50 mV
—
V
VDD Falling
Automatic Power Down
Exit Threshold
VPDEXIT
—
VBAT +
150 mV
VBAT +
250 mV
V
VDD Rising
Die Temperature
TSD
—
150
—
°C
Die Temperature
Hysteresis
TSDHYS
—
10
—
°C
Precondition Hysteresis
VBAT High-to-Low (Note 1)
Charge Termination
Charge Termination
Current Ratio
Automatic Recharge
Recharge Voltage
Threshold Ratio
VRTH / VREG
Pass Transistor ON-Resistance
ON-Resistance
VDD = 4.5V, TJ = 105°C (Note 1)
Status Indicator - STAT
PROG Input
Impedance for Shutdown
Automatic Power Down
Thermal Shutdown
Note 1:
Not production tested. Ensured by design.
DS22190A-page 6
© 2009 Microchip Technology Inc.
MCP73213
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+0.3V] to 12V, TA=-40°C to +85°C.
Typical values are at +25°C, VDD= [VREG(Typical)+1.0V]
Parameters
Sym
Min
Typ
Max
Units
Conditions
Elapsed Timer
Elapsed Timer Period
tELAPSED
—
0
—
Hours
3.6
4.0
4.4
Hours
5.4
6.0
6.6
Hours
7.2
8.0
8.8
Hours
Timer Disabled
Preconditioning Timer
Preconditioning Timer Period
tPRECHG
—
0
—
Hours
0.4
0.5
0.6
Hours
µs
Disabled Timer
Status Indicator
Status Output turn-off
tOFF
—
—
500
Status Output turn-on,
tON
—
—
500
Note 1:
ISINK = 1 mA to 0 mA
(Note 1)
ISINK = 0 mA to 1 mA
(Note 1)
Not production tested. Ensured by design.
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (Typical) + 0.3V] to 6V.
Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Sym
Min
Typ
Max
Units
TA
-40
—
+85
°C
Operating Temperature Range
TJ
-40
—
+125
°C
Storage Temperature Range
TA
-65
—
+150
°C
θJA
—
43
—
°C/W
Conditions
Temperature Ranges
Specified Temperature Range
Thermal Package Resistances
Thermal Resistance, DFN-10 (3x3)
© 2009 Microchip Technology Inc.
4-Layer JC51-7 Standard Board,
Natural Convection
DS22190A-page 7
MCP73213
NOTES:
DS22190A-page 8
© 2009 Microchip Technology Inc.
MCP73213
2.0
TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Battery Regulation Voltage (V)
Battery Regulation Voltage (V)
Note: Unless otherwise indicated, VDD = [VREG(Typical) + 1V], IOUT = 50 mA and TA= +25°C, Constant-voltage mode.
8.24
8.23
8.22
8.21
8.20
8.19
VBAT = 8.2V
ILOAD = 150 mA
TA = +25°C
8.18
8.17
8.16
8.4
9.0
9.6
10.2
10.8
11.4
12.0
8.24
8.23
8.22
8.21
8.20
8.19
VBAT = 8.2V
VDD = 9.2V
ILOAD = 150 mA
8.18
8.17
8.16
-5.0
5.0
Supply Voltage (V)
25.0
35.0
45.0
55.0
FIGURE 2-4:
Battery Regulation Voltage
(VBAT) vs. Ambient Temperature (TA).
8.24
1200
8.23
Charge Current (mA)
Battery Regulation Voltage (V)
FIGURE 2-1:
Battery Regulation Voltage
(VBAT) vs. Supply Voltage (VDD).
8.22
8.21
8.20
8.19
VBAT = 8.2V
ILOAD = 50 mA
TA = +25°C
8.18
8.17
8.16
VBAT = 8.2V
VDD = 9.2V
TA = +25°C
1000
800
600
400
200
0
8.4
9.0
9.6
10.2
10.8
11.4
12.0
1
3
Supply Voltage (V)
Charge Current (mA)
8.23
8.22
8.21
8.20
8.19
VBAT = 8.2V
VDD = 9.2V
ILOAD = 50 mA
8.17
8.16
-5
5
15
25
35
45
55
Ambient Temperature (°C)
FIGURE 2-3:
Battery Regulation Voltage
(VBAT) vs. Ambient Temperature (TA).
© 2009 Microchip Technology Inc.
7
9
11
13
15
17
19
FIGURE 2-5:
Charge Current (IOUT) vs.
Programming Resistor (RPROG).
8.24
8.18
5
Programming Resistor (kΩ)
FIGURE 2-2:
Battery Regulation Voltage
(VBAT) vs. Supply Voltage (VDD).
Battery Regulation Voltage (V)
15.0
Ambient Temperature (°C)
900
880
860
840
820
800
780
760
740
720
700
R PROG = 1.3 kΩ
TA = +25°C
8.4
9.0
9.6
10.2
10.8
11.4
12.0
Supply Voltage (V)
FIGURE 2-6:
Charge Current (IOUT) vs.
Supply Voltage (VDD).
DS22190A-page 9
MCP73213
TYPICAL PERFORMANCE CURVES (CONTINUED)
600
160
154
148
142
136
130
124
118
112
106
100
Charge Current (mA)
Charge Current (mA)
Note: Unless otherwise indicated, VDD = [VREG(Typical) + 1V], IOUT = 10 mA and TA= +25°C, Constant-voltage mode.
RPROG = 10 kΩ
TA = +25°C
8.4
9.0
VBAT = 8.2V
RPROG = 2 kΩ
590
VDD = 12V
580
VDD = 11V
570
560
VDD = 9.2V
VDD = 8.5V
9.6
10.2
10.8
11.4
550
12.0
-5
0
5
Supply Voltage (V)
Ambient Temperature (°C)
RPROG = 5 kΩ
TA = +25°C
8.4
9.0
FIGURE 2-10:
Charge Current (IOUT) vs.
Ambient Temperature (TA).
BSP Regulation Current (mA)
Charge Current (mA)
FIGURE 2-7:
Charge Current (IOUT) vs.
Programming Resistor (RPROG).
300
290
280
270
260
250
240
230
220
210
200
9.6
10.2
10.8
11.4
12.0
VDD = 12V
VDD = 11V
VDD = 9.2V
VDD = 8.5V
5
10 15 20 25 30 35 40 45 50 55
Ambient Temperature (°C)
FIGURE 2-9:
Charge Current (IOUT) vs.
Ambient Temperature (TA).
DS22190A-page 10
22
18
14
VDD = 9.2V
10
5 15 25 35 45 55 65 75 85
FIGURE 2-11:
Battery Short Protection
Regulation Current (ISHORT) vs. Ambient
Temperature (TA).
Discharge Current (uA)
Charge Current (mA)
VBAT = 8.2V
RPROG = 20 kΩ
0
26
Ambient Temperature (C)
FIGURE 2-8:
Charge Current (IOUT) vs.
Programming Resistor (RPROG).
-5
30
-45 -35 -25 -15 -5
Supply Voltage (V)
90
87
84
81
78
75
72
69
66
63
60
10 15 20 25 30 35 40 45 50 55
9.0
8.0
7.0
6.0
5.0 End of Charge
4.0
3.0
2.0
VDD < VBAT
1.0
0.0
VDD < VSTOP
-1.0
-5.0
5.0
15.0
25.0
35.0
45.0
55.0
Ambient Temperature (°C)
FIGURE 2-12:
Output Leakage Current
(IDISCHARGE) vs. Ambient Temperature (TA).
© 2009 Microchip Technology Inc.
MCP73213
TYPICAL PERFORMANCE CURVES (CONTINUED)
Battery Voltage Accuracy (%)
Note: Unless otherwise indicated, VDD = [VREG(Typical) + 1V], IOUT = 10 mA and TA= +25°C, Constant-voltage mode.
0.5
0.3
Output Current
0.1
-0.1
Battery Voltage
Input Voltage
VBAT = 8.2V
ILOAD = 150 mA
TA = +25°C
-0.3
-0.5
8.4
9.0
9.6
10.2
10.8
11.4
12.0
Supply Voltage (V)
FIGURE 2-13:
Battery Voltage Accuracy
(VRTOL) vs. Supply Voltage (VDD).
FIGURE 2-16:
Complete Charge Cycle
(875 mAh Li-Ion Battery).
Source Voltage (V)
Output Ripple (V)
Output Ripple (V)
Output Current (mA)
10
9
8
7
6
5
4
3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Thermal Foldback
VDD = 9V
RPROG = 1.5 kΩ
875 mAh Li-Ion Battery
2
1
0
0
10
20
FIGURE 2-15:
Protection.
30 40 50 60
Time (Minutes)
70
80
Input Overvoltage
© 2009 Microchip Technology Inc.
Supply Current (A)
Battery Voltage (V)
FIGURE 2-14:
Load Transient Response
(ILOAD = 50 mA/Div, Output: 100 mV/Div, Time:
100 µs/Div).
FIGURE 2-17:
Line Transient Response
(ILOAD = 10 mA) (100 µs/Div).
Source Voltage (V)
Output Ripple (V)
90
FIGURE 2-18:
Line Transient Response
(ILOAD = 100 mA) (100 µs/Div).
DS22190A-page 11
MCP73213
NOTES:
DS22190A-page 12
© 2009 Microchip Technology Inc.
MCP73213
3.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
MCP73213
PIN FUNCTION TABLES
Symbol
I/O
1, 2
VDD
I
3, 4
VBAT
I/O
5, 6
NC
-
Description
DFN-10
3.1
Battery Management Input Supply
Battery Charge Control Output
No Connection
7
STAT
O
Battery Charge Status Output
8, 9
VSS
-
Battery Management 0V Reference
10
PROG
I/O
Battery Charge Current Regulation Program and Charge Control Enable
11
EP
—
Exposed Pad
Battery Management Input Supply
(VDD)
A supply voltage of [VREG (Typical) + 0.3V] to 13.0V is
recommended. Bypass to VSS with a minimum of 1 µF.
The VDD pin is rated 18V absolute maximum to prevent
suddenly rise of input voltage from spikes or low cost
ac-dc wall adapter.
3.5
Battery Management 0V Reference
(VSS)
Connect to the negative terminal of the battery and
input supply.
3.6
Current Regulation Set (PROG)
Connect to the positive terminal of the battery. Bypass
to VSS with a minimum of 1 µF to ensure loop stability
when the battery is disconnected.
The fast charge current is set by placing a resistor from
PROG to VSS during constant current (CC) mode.
PROG pin also serves as charge control enable. When
a typical 200 kΩ impedance is applied to PROG pin,
the MCP73213 is disabled until the high-impedance is
removed. Refer to Section 5.5 “Constant Current
MODE - Fast Charge” for details.
3.3
3.7
3.2
Battery Charge Control Output
(VBAT)
No Connect (NC)
No connect.
3.4
Status Output (STAT)
STAT is an open-drain logic output for connection to an
LED for charge status indication in standalone
applications. Alternatively, a pull-up resistor can be
applied for interfacing to a host microcontroller. Refer to
Table 5-1 for a summary of the status output during a
charge cycle.
© 2009 Microchip Technology Inc.
Exposed Pad (EP)
The Exposed Thermal Pad (EP) shall be connected to
the exposed copper area on the Printed Circuit Board
(PCB) for the thermal enhancement. Additional vias on
the copper area under the MCP73213 device can
improve the performance of heat dissipation and
simplify the assembly process.
DS22190A-page 13
MCP73213
NOTES:
DS22190A-page 14
© 2009 Microchip Technology Inc.
MCP73213
4.0
DEVICE OVERVIEW
The MCP73213 are simple, but fully integrated linear
charge management controllers. Figure 4-1 depicts
the operational flow algorithm.
SHUTDOWN MODE
VDD < VUVLO
VDD < VPD
or
PROG > 200 kΩ
STAT = HI-Z
VBAT < VPTH
VDD < VOVP
PRECONDITIONING MODE
Charge Current = IPREG
STAT = LOW
Timer Reset
Timer Enable
Timer Expired
TIMER FAULT
No Charge Current
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
VDD > VOVP
VDD > VOVP
VBAT > VPTH
VBAT > VPTH
FAST CHARGE MODE
Charge Current = IREG
STAT = LOW
Timer Reset
Timer Enabled
OVERVOLTAGE PROTECTION
No Charge Current
STAT = Hi-Z
Timer Suspended
VDD < VOVP
VDD > VOVP
VDD < VOVP
VBAT = VREG
Timer Expired
VBAT < VRTH
TIMER FAULT
No Charge Current
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
CONSTANT VOLTAGE MODE
Charge Voltage = VREG
STAT = LOW
VBAT < ITERM
Die Temperature < TSDHYS
Charge Mode Resume
CHARGE COMPLETE MODE
No Charge Current
STAT = HI-Z
Timer Reset
Die Temperature > TSD
VBAT < VSHORT
TEMPERATURE FAULT
No Charge Current
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
FIGURE 4-1:
VBAT > VSHORT
Charge Mode Resume
BATTERY SHORT PROTECTION
Charge Current = ISHORT
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
The MCP73213 Flow Chart.
© 2009 Microchip Technology Inc.
DS22190A-page 15
MCP73213
NOTES:
DS22190A-page 16
© 2009 Microchip Technology Inc.
MCP73213
5.0
DETAILED DESCRIPTION
5.3.2
5.1
Undervoltage Lockout (UVLO)
The battery charge control output is the drain terminal
of an internal P-channel MOSFET. The MCP73213
provides constant current and voltage regulation to the
battery pack by controlling this MOSFET in the linear
region. The battery charge control output should be
connected to the positive terminal of the battery pack.
An internal undervoltage lockout (UVLO) circuit
monitors the input voltage and keeps the charger in
shutdown mode until the input supply rises above the
UVLO threshold. In the event a battery is present when
the input power is applied, the input supply must rise
approximately 150 mV above the battery voltage
before the MCP73213 device become operational.
The UVLO circuit places the device in shutdown mode
if the input supply falls to approximately 150 mV above
the battery voltage.The UVLO circuit is always active.
At any time, the input supply is below the UVLO
threshold or approximately 150 mV of the voltage at the
VBAT pin, the MCP73213 device is placed in a
shutdown mode.
5.2
Overvoltage Protection (OVP)
An internal overvoltage protection (OVP) circuit
monitors the input voltage and keeps the charger in
shutdown mode when the input supply rises above the
typical 13V, OVP threshold. The hysteresis of OVP is
approximately 150 mV for the MCP73213 device.
The MCP73213 device is operational between UVLO
and OVP threshold. The OVP circuit is also recognized
as overvoltage lock out (OVLO).
5.3
Charge Qualification
When the input power is applied, the input supply must
rise 150 mV above the battery voltage before the
MCP73213 becomes operational.
The automatic power down circuit places the device in
a shutdown mode if the input supply falls to within
+50 mV of the battery voltage.
The automatic circuit is always active. At any time the
input supply is within +50 mV of the voltage at the
VBAT pin, the MCP73213 is placed in a shutdown
mode.
For a charge cycle to begin, the automatic power
down conditions must be met and the charge enable
input must be above the input high threshold.
5.3.1
BATTERY MANAGEMENT INPUT
SUPPLY (VDD)
The VDD input is the input supply to the MCP73213.
The MCP73213 automatically enters a Power-down
mode if the voltage on the VDD input falls to within
+50 mV of the battery voltage. This feature prevents
draining the battery pack when the VDD supply is not
present.
© 2009 Microchip Technology Inc.
5.3.3
BATTERY CHARGE CONTROL
OUTPUT (VBAT)
BATTERY DETECTION
The MCP73213 detects the battery presence with
charging of the output capacitor. The charge flow will
initiate when the voltage on VBAT is pulled below the
VRECHARGE threshold.
Refer
to
Section 1.0
“Electrical Characteristics” for VRECHARGE values.
The value will be the same for non-rechargeable
device.
When VBAT > VREG + Hysteresis, the charge will be
suspended or not start, depends on the condition to
prevent over charge that may occur.
5.4
Preconditioning
If the voltage at the VBAT pin is less than the
preconditioning threshold, the MCP73213 device
enters a preconditioning mode. The preconditioning
threshold is factory set. Refer to Section 1.0
“Electrical Characteristics” for preconditioning
threshold options.
In this mode, the MCP73213 device supplies 10% of
the fast charge current (established with the value of
the resistor connected to the PROG pin) to the battery.
When the voltage at the VBAT pin rises above the
preconditioning threshold, the MCP73213 device
enters the constant current (fast charge) mode.
Note:
5.4.1
The MCP73213 device also offers options
with no preconditioning.
TIMER EXPIRED DURING
PRECONDITIONING MODE
If the internal timer expires before the voltage threshold
is reached for fast charge mode, a timer fault is
indicated and the charge cycle terminates. The
MCP73213 device remains in this condition until the
battery is removed or input power is cycled. If the
battery is removed, the MCP73213 device enters the
Stand-by mode where it remains until a battery is
reinserted.
Note:
The typical preconditioning timer for
MCP73213 is 32 minutes. The MCP73213
also offers options with no preconditioning
timer.
DS22190A-page 17
MCP73213
5.5
Constant Current MODE - Fast
Charge
During the constant current mode, the programmed
charge current is supplied to the battery or load.
The charge current is established using a single
resistor from PROG to VSS. The program resistor and
the charge current are calculated using the following
equation:
EQUATION 5-1:
I REG = 1104 × R PROG
– 0.93
Where:
RPROG
=
kilo-ohms (kΩ)
IREG
=
milliampere (mA)
5.5.1
5.7
Where:
=
kilo-ohms (kΩ)
IREG
=
milliampere (mA)
Table 5-1 provides commonly seen E96 (1%) and E24
(5%) resistors for various charge current to reduce
design time.
TABLE 5-1:
RESISTOR LOOKUP TABLE
Charge
Recommended Recommended
Current (mA) E96 Resistor (Ω) E24 Resistor (Ω)
130
10k
10k
150
8.45k
8.20k
200
6.20k
6.20k
250
4.99k
5.10k
300
4.02k
3.90k
350
3.40k
3.30k
400
3.00k
3.00k
450
2.61k
2.70k
500
2.32k
2.37k
550
2.10k
2.20k
600
1.91k
2.00k
650
1.78k
1.80k
700
1.62k
1.60k
750
1.50k
1.50k
800
1.40k
1.50k
850
1.33k
1.30k
900
1.24k
1.20k
950
1.18k
1.20k
1000
1.10k
1.10k
1100
1.00k
1.00k
DS22190A-page 18
Constant Voltage Mode
When the voltage at the VBAT pin reaches the
regulation voltage, VREG, constant voltage regulation
begins. The regulation voltage is factory set to 8.2V,
8.4V, 8.7V or 8.8V with a tolerance of ± 0.5%.
I REG ⎞ ⎞
⎛ log ⎛ ----------⎝ ⎝ 1104⎠ ⎠ ⁄ ( – 0.93 )
RPROG
TIMER EXPIRED DURING
CONSTANT CURRENT - FAST
CHARGE MODE
If the internal timer expires before the recharge voltage
threshold is reached, a timer fault is indicated and the
charge cycle terminates. The MCP73213 device
remains in this condition until the battery is removed. If
the battery is removed or input power is cycled. The
MCP73213 device enters the Stand-by mode where it
remains until a battery is reinserted.
5.6
EQUATION 5-2:
R PROG = 10
Constant current mode is maintained until the voltage
at the VBAT pin reaches the regulation voltage, VREG.
When constant current mode is invoked, the internal
timer is reset.
Charge Termination
The charge cycle is terminated when, during constant
voltage mode, the average charge current diminishes
below a threshold established with the value of 5%,
7.5%, 10% or 20% of fast charge current or internal
timer has expired. A 1 ms filter time on the termination
comparator ensures that transient load conditions do
not result in premature charge cycle termination. The
timer period is factory set and can be disabled. Refer to
Section 1.0 “Electrical Characteristics” for timer
period options.
5.8
Automatic Recharge
The MCP73213 device continuously monitors the
voltage at the VBAT pin in the charge complete mode. If
the voltage drops below the recharge threshold,
another charge cycle begins and current is once again
supplied to the battery or load. The recharge threshold
is factory set. Refer to Section 1.0 “Electrical
Characteristics” for recharge threshold options.
Note:
The MCP73213 also offers options with no
automatic recharge.
For the MCP73213 device with no recharge option, the
MCP73213 will go into standby mode when termination
condition is met. The charge will not restart until
following condition has met:
• Battery is removed from system and insert again
• VDD is removed and plug in again
• RPROG is disconnected (or high impedance) and
reconnect
© 2009 Microchip Technology Inc.
MCP73213
5.9
Thermal Regulation
The MCP73213 shall limit the charge current based on
the die temperature. The thermal regulation optimizes
the charge cycle time while maintaining device
reliability. Figure 5-1 depicts the thermal regulation for
the MCP73213 device. Refer to Section 1.0
“Electrical Characteristics” for thermal package
resistances
and
Section 6.1.1.2
“Thermal
Considerations” for calculating power dissipation.
TABLE 5-2:
STATUS OUTPUTS
CHARGE CYCLE
STATE
Shutdown
Hi-Z
Standby
Hi-Z
Preconditioning
L
Constant Current Fast
Charge
L
Constant Voltage
.
Charge Complete - Standby
Fast Charge Current (mA)
150
1.6 second 50% D.C.
Flashing (Type 2)
Hi-Z (Type 1)
Timer Fault
1.6 second 50% D.C.
Flashing (Type 2)
Hi-Z (Type 1)
Preconditioning Timer Fault
1.6 second 50% D.C.
Flashing (Type 2)
Hi-Z (Type 1)
60
VDD = 9.1V
RPROG = 10 kΩ
30
0
25
40
FIGURE 5-1:
5.10
55
70
85 100 115 130 145 160
Junction Temperature (°C)
Thermal Regulation.
Thermal Shutdown
The MCP73213 suspends charge if the die
temperature exceeds +150°C. Charging will resume
when the die temperature has cooled by approximately
10°C. The thermal shutdown is a secondary safety
feature in the event that there is a failure within the
thermal regulation circuitry.
5.11
Status Indicator
L
Hi-Z
Temperature Fault
120
90
STAT
5.12
Battery Short Protection
Once a single-cell Li-Ion battery is detected, an internal
battery short protection (BSP) circuit starts monitoring
the battery voltage. When VBAT falls below a typical
1.7V battery short protection threshold voltage, the
charging behavior is postponed. 25 mA (typical)
detection current is supplied for recovering from battery
short condition.
Preconditioning mode resumes when VBAT raises
above battery short protection threshold. The battery
voltage must rise approximately 150 mV above the
battery short protection voltage before the MCP73213
device become operational.
The charge status outputs are open-drain outputs with
two different states: Low (L), and High Impedance
(Hi-Z). The charge status outputs can be used to
illuminate LEDs. Optionally, the charge status outputs
can be used as an interface to a host microcontroller.
Table 5-2 summarize the state of the status outputs
during a charge cycle.
© 2009 Microchip Technology Inc.
DS22190A-page 19
MCP73213
NOTES:
DS22190A-page 20
© 2009 Microchip Technology Inc.
MCP73213
6.0
APPLICATIONS
The MCP73213 is designed to operate in conjunction
with a host microcontroller or in stand-alone
applications. The MCP73213 provides the preferred
charge algorithm for dual Lithium-Ion or LithiumPolymer cells Constant-current followed by Constantvoltage. Figure 6-1 depicts a typical stand-alone
application circuit, while FiguresFigure 6-2 depict the
accompanying charge profile.
MCP73213 Typical Application
1
Ac-dc-Adapter
2
CIN
RLED
7
VDD
VDD
STAT
5 NC
6 NC
10
9
8
7
6
5
4
3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
VDD = 9V
RPROG = 1.5 kΩ
875 mAh Li-Ion Battery
0
10
+
4
COUT
PROG
VSS
VSS
2-Cell
Li-Ion
Battery
10
9
8
RPROG
-
Typical Application Circuit.
Thermal Foldback
2
1
0
VBAT
3
20
30 40 50 60
Time (Minutes)
70
80
Supply Current (A)
Battery Voltage (V)
FIGURE 6-1:
VBAT
90
FIGURE 6-2:
Typical Charge Profile
(875 mAh Li-Ion Battery).
© 2009 Microchip Technology Inc.
DS22190A-page 21
MCP73213
6.1
Application Circuit Design
Due to the low efficiency of linear charging, the most
important factors are thermal design and cost, which
are a direct function of the input voltage, output current
and thermal impedance between the battery charger
and the ambient cooling air. The worst-case situation is
when the device has transitioned from the
Preconditioning mode to the Constant-current mode. In
this situation, the battery charger has to dissipate the
maximum power. A trade-off must be made between
the charge current, cost and thermal requirements of
the charger.
6.1.1
COMPONENT SELECTION
Selection of the external components in Figure 6-1 is
crucial to the integrity and reliability of the charging
system. The following discussion is intended as a guide
for the component selection process.
6.1.1.1
Charge Current
The preferred fast charge current for Li-Ion / Li-Poly
cells is below the 1C rate, with an absolute maximum
current at the 2C rate. The recommended fast charge
current should be obtained from battery
manufacturer. For example, a 500 mAh battery pack
with 0.7C preferred fast charge current has a charge
current of 350 mA. Charging at this rate provides the
shortest charge cycle times without degradation to the
battery pack performance or life.
Note:
6.1.1.2
Please consult with your battery supplier
or refer to battery data sheet for preferred
charge rate.
Thermal Considerations
The worst-case power dissipation in the battery
charger occurs when the input voltage is at the
maximum and the device has transitioned from the
Preconditioning mode to the Constant-current mode. In
this case, the power dissipation is:
EQUATION 6-1:
PowerDissipation = ( V DDMAX – V PTHMIN ) × I REGMAX
Where:
Power dissipation with a 9V, ±10% input voltage
source, 500 mA ±10% and preconditioning threshold
voltage at 6V is:
EQUATION 6-2:
PowerDissipation = ( 9.9 V – 6.0 V ) × 550mA = 2.15 W
This power dissipation with the battery charger in the
DFN-10 package will result approximately 92°C above
room temperature.
6.1.1.3
The MCP73213 is stable with or without a battery load.
In order to maintain good AC stability in the Constantvoltage mode, a minimum capacitance of 1 µF is
recommended to bypass the VBAT pin to VSS. This
capacitance provides compensation when there is no
battery load. In addition, the battery and
interconnections appear inductive at high frequencies.
These elements are in the control feedback loop during
Constant-voltage mode. Therefore, the bypass
capacitance may be necessary to compensate for the
inductive nature of the battery pack.
A minimum of 16V rated 1 µF, is recommended to apply
for output capacitor and a minimum of 25V rated 1 µF,
is recommended to apply for input capacitor for typical
applications.
TABLE 6-1:
=
the maximum input voltage
IREGMAX
=
the maximum fast charge current
VPTHMIN
=
the minimum transition threshold
voltage
DS22190A-page 22
MLCC CAPACITOR EXAMPLE
MLCC
Capacitors
Temperature
Range
X7R
-55°C to +125°C
±15%
X5R
-55°C to +85°C
±15%
Tolerance
Virtually any good quality output filter capacitor can be
used, independent of the capacitor’s minimum
Effective Series Resistance (ESR) value. The actual
value of the capacitor (and its associated ESR)
depends on the output load current. A 1 µF ceramic,
tantalum or aluminum electrolytic capacitor at the
output is usually sufficient to ensure stability.
6.1.1.4
VDDMAX
External Capacitors
Reverse-Blocking Protection
The MCP73213 provides protection from a faulted or
shorted input. Without the protection, a faulted or
shorted input would discharge the battery pack through
the body diode of the internal pass transistor.
© 2009 Microchip Technology Inc.
MCP73213
6.2
PCB Layout Issues
For optimum voltage regulation, place the battery pack
as close as possible to the device’s VBAT and VSS pins,
recommended to minimize voltage drops along the
high current-carrying PCB traces.
If the PCB layout is used as a heatsink, adding many
vias in the heatsink pad can help conduct more heat to
the backplane of the PCB, thus reducing the maximum
junction temperature. Figure 6-4 and Figure 6-5 depict
a typical layout with PCB heatsinking.
FIGURE 6-5:
Typical Layout (Bottom).
102-00261
MCP73213EV
FIGURE 6-3:
Typical Layout (Top).
FIGURE 6-4:
Typical Layout (Top Metal).
© 2009 Microchip Technology Inc.
DS22190A-page 23
MCP73213
NOTES:
DS22190A-page 24
© 2009 Microchip Technology Inc.
MCP73213
7.0
PACKAGING INFORMATION
7.1
Package Marking Information
Example:
10-Lead DFN (3x3)
Standard *
XXXX
Part Number
YYWW
MCP73213-A6SI/MF
MCP73213-B6SI/MF
NNN
Legend: XX...X
Y
YY
WW
NNN
e3
*
Note:
Code
Z3HI
Y3HI
Z3HI
0923
256
Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
© 2009 Microchip Technology Inc.
DS22190A-page 25
MCP73213
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© 2009 Microchip Technology Inc.
MCP73213
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© 2009 Microchip Technology Inc.
DS22190A-page 27
MCP73213
NOTES:
DS22190A-page 28
© 2009 Microchip Technology Inc.
MCP73213
APPENDIX A:
REVISION HISTORY
Revision A (July 2009)
• Original Release of this Document.
© 2009 Microchip Technology Inc.
DS22190A-page 29
MCP73213
NOTES:
DS22190A-page 30
© 2009 Microchip Technology Inc.
MCP73213
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.
X
XX
Device
Temperature
Range
Package
Device:
MCP73213:
MCP73213T:
Temperature
Range:
I
Package:
MF
Examples:
a)
b)
Dual Cell Li-Ion/Li-Polymer Battery Device
Dual Cell Li-Ion/Li-Polymer Battery Device,
Tape and Reel
= -40°C to +85°C (Industrial)
c)
d)
MCP73213-A6SI/MF: Dual Cell Li-Ion/
Li-Polymer Battery Device
MCP73213-B6SI/MF: Dual Cell Li-Ion/
Li-Polymer Battery Device
MCP73213T-A6SI-MF: Tape and Reel,
Dual Cell Li-Ion/
Li-Polymer Battery Device
MCP73213T-B6SI/MF: Tape and Reel,
Dual Cell Li-Ion/
Li-Polymer Battery Device
= Plastic Dual Flat No Lead, 3x3 mm Body (DFN),
10-Lead
© 2009 Microchip Technology Inc.
DS22190A-page 31
MCP73213
NOTES:
DS22190A-page 32
© 2009 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
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hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
rfPIC and UNI/O are registered trademarks of Microchip
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MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
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Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICkit, PICDEM, PICDEM.net,
PICtail, PIC32 logo, REAL ICE, rfLAB, Select Mode, Total
Endurance, TSHARC, WiperLock and ZENA are trademarks
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SQTP is a service mark of Microchip Technology Incorporated
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All other trademarks mentioned herein are property of their
respective companies.
© 2009, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
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are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
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and manufacture of development systems is ISO 9001:2000 certified.
© 2009 Microchip Technology Inc.
DS22190A-page 33
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Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
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Fax: 91-80-3090-4080
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Toronto
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Canada
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Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
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China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Hsin Chu
Tel: 886-3-6578-300
Fax: 886-3-6578-370
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
03/26/09
DS22190A-page 34
© 2009 Microchip Technology Inc.
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