ACTIVE-SEMI ACT3704YH-T 12v linear-mode battery charger for li/li-polymer cell Datasheet

ACT3704
Rev2, 26-Jul-07
12V Linear-Mode Battery Charger for Li+/Li-polymer Cells
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
Internal High Voltage MOSFET
Up to 12V Input Voltage
±0.5% Output Voltage Accuracy
Charge Current Thermal Foldback
Programmable Termination Voltage
Programmable Fast Charge Current
Programmable Charging Timer
No Blocking Diode Required
Low Reverse Leakage
Preconditioning for Deeply Depleted Battery
Low Quiescent Current Standby Mode
Space-Saving, Thermally-Enhanced SOP8/EP, TDFN33-8
GENERAL DESCRIPTION
The ACT3704 is a complete linear charging solution
for single cell Lithium Ion and Lithium Polymer batteries. It incorporates an internal 12V power MOSFET for Constant-Current, Constant-Voltage control
(CC/CV).
The battery regulation voltage accuracy is ± 0.5%
and can be set to either 4.1V or 4.2V. The charge
current is programmed with an external resistor to a
maximum of 1A to minimize total charge time.
The reverse leakage current from the battery is less
than 1µA if the input adaptor is disconnected or if
there is a reverse battery connection. The ACT3704
is available in thermally-enhanced SOP-8/EP, and
TDFN33-8 packages to accommodate high charge
current operation and minimize total charging time.
APPLICATIONS
•
•
•
•
•
Mobile Phone
Wireless Headsets
Portable Media Players
Cradle Chargers
Portable Devices
TYPICAL APPLICATION CIRCUIT
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ACT3704
Rev2, 26-Jul-07
ORDERING INFORMATION
PART NUMBER
TEMPERATURE RANGE
PACKAGE
PINS
PACKING
ACT3704YH
-40°C to 85°C
SOP-8/EP
8
TUBE
ACT3704YH-T
-40°C to 85°C
SOP-8/EP
8
TAPE & REEL
ACT3704NH-T
-40°C to 85°C
TDFN33-8
8
TAPE & REEL
PIN CONFIGURATION
PIN DESCRIPTIONS
PIN NUMBER
PIN NAME
PIN DESCRIPTION
1
nEOC
Open-Drain Charge Status Indicator. nEOC is a high voltage output and can withstand up to 12V, allowing it to drive LEDs that are directly connected to IN or to a
lower voltage supply. nEOC features an internal 7mA current limit, allowing this
pin to directly drive an LED for a visual charge-status indicator. For a logic-level
charge status indicator, simply connect a 10kΩ or greater pull-up resistor between
nEOC and a suitable voltage supply.
2
ADJ
Charge Termination Voltage Adjust. Connect ADJ to G to select 4.10V termination
voltage or connect ADJ to IN to select 4.20V termination voltage.
3
IN
Power Input. IN can be withstand operating voltages of up to 12V. Bypass to G
with a 1µF or larger capacitor.
4
ISET
Charge Current Set. Program the maximum charge current by connecting a resistor (RISET) between ISET and G. See the Charge Current Programming section for
more information.
5
TIMER
6
BAT
7
G
8
EP
Safety Timer program pin. Connect to capacitor CTIMER.
Charge Battery Output. Connect this pin to the positive terminal of the battery.
Bypass this pin as close as possible to IC with 1µF ceramic capacitor.
Ground.
nSTAT
Open-Drain Charge Status Indicator. nSTAT can withstand up to 12V, allowing it
to drive LEDs that are directly connected to IN or to a lower voltage supply,
nSTAT features an internal 7mA current limit, allowing this pin to directly drive an
LED for a visual charge-status indicator. For a logic-level charge status indicator,
simply connect a 10kΩ or greater pullup resistor between nSTAT and a suitable
voltage supply.
EP
Exposed Pad. The exposed thermal pad should be connected to board ground
plane and G. The ground plane should include a large exposed copper pad under
the package to connect the entire pad for thermal dissipation (see package outline).
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ACT3704
Rev2, 26-Jul-07
ABSOLUTE MAXIMUM RATINGSc
PARAMETER
VALUE
UNIT
IN, ADJ, nSTAT, nEOC to G
-0.3 to 15
V
BAT to G
-0.3 to 7
V
ISET, TIMER to G
-0.3 to 6
V
±5
mA
SOP-8/EP
45
°C/W
TDFN33-8
36.7
°C/W
SOP-8/EP
1.8
W
TDFN33-8
2
W
125
°C
-65 to 150
°C
300
°C
ISET, TIMER Current
Junction to Ambient Thermal
Resistance (θJA)
Maximum Power Dissipation
Maximum Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
c: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may
affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = VTERM + 1V, VBAT = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
CONDITIONS
Input Supply Voltage, VIN
TYP
4.2
ADJ = G
Battery Termination Voltage,
VTERM
MIN
ADJ = IN
4.079
TA = -40°C to 85°C
UNIT
12
V
4.121
4.059
4.179
TA = -40°C to 85°C
4.1
MAX
4.141
4.2
4.221
4.158
V
4.242
Line Regulation
VIN = VTERM + 1V to 12V, IBAT = 10mA
0.03
0.1
%/V
Load Regulation
VIN = VTERM + 1V, IBAT = 10mA to 250mA
0.05
0.1
%
2.75
2.95
V
Precondition Threshold
2.55
Precondition Threshold Hysteresis
125
Constant Current Adjust Range
Fast Charge Constant Current
mV
100
VBAT = 3.8V, RISET = 50k
0.45
0.51
1000
mA
0.57
A
Precondition Charge Current
VBAT = 2.5V, RISET = 50k
51
mA
End-of-Charge Threshold
RISET = 50k
51
mA
Charge Restart Threshold
VBAT Falling
VTERM - 0.1
V
PMOS On Resistance
VBAT = 3.8V, IBAT = 100mA
UVLO Threshold
IN Rising
UVLO Hysteresis
IN Falling
BAT Reserve Leakage Current
Input floating or charger disabled
0.4
4
IN Supply Current
Charger Standby
500
800
µA
IN Supply Current
Charger Enable
0.7
2
mA
3.8
0.7
1.2
Ω
4.0
4.2
V
1
V
µA
ADJ Voltage Threshold
1.7
V
Thermal Regulation Threshold
120
°C
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ACT3704
Rev2, 26-Jul-07
ELECTRICAL CHARACTERISTICS CONT’D
(VIN = VTERM + 1V, VBAT = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
CONDITIONS
MIN
TYP
4
7
MAX UNIT
nSTAT, nEOC Outputs
Sink Current
VnSTAT = VnEOC = 2V
Output Low Voltage
ISINK = 1mA
Leakage Current
VnSTAT = VnEOC = 12V
10
mA
0.4
V
1
µA
1.25
V
Charge Current Setting
ISET Pin Voltage
1.15
IBAT to ISET Current Ratio
1.20
22
kA/A
Charge Timers
TIMER Frequency
TIMER Floating
POR Start Delay
0.8
1.5
2.2
kHz
1
ms
Transition Out of Preconditioning Delay
0.1
ms
Current Rise Time Out of Preconditioning
300
µs
Normal Safety Timer
CTIMER = 2.2nF
0.5
hr
Precondition Safety Timer
CTIMER = 2.2nF
20
mins
Total Safety Timer
CTIMER = 2.2nF
1
hr
Time to End of Charge
CTIMER = 2.2nF
10
mins
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ACT3704
Rev2, 26-Jul-07
TYPICAL PERFORMANCE CHARACTERISTICS
(VIN = 5V, TA = 25°C, unless otherwise specified.)
Charge Current vs. Battery Termination Voltage
Battery Termination Voltage vs. Charge Current
3.50
VTERM (V)
3.00
500
450
400
2.50
2.00
1.50
350
300
250
200
150
1.00
100
0.50 VIN = 5V
RISET = 27k
0.00 ADJ = G
0
50
0
200
400
600
800
1000
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
IBAT (mA)
VBAT (V)
Charge Current vs. Supply Voltage
Charge Current vs. Battery Voltage
400
550
525
500
475
IBAT (mA)
500
ACT3704-004
Thermal Regulation Circuitry Active
4.5
575
ACT3704-003
600
IBAT (mA)
VIN = 5V
RISET = 47k
ADJ = G
550
IBAT (mA)
4.00
ACT3704-002
600
ACT3704-001
4.50
300
450
425
400
375
350
200
100
4.5
6.5
10.5
8.5
12.5
300
VIN = 5V
RISET = 47k
ADJ = G
275
3.00 3.10 3.20 3.30 3.40 3.50 3.60 3.70 3.80 3.90 4.00 4.10
14.5
VIN (V)
VBAT (V)
Charge Current vs. RISET
Battery Termination Voltage vs. Supply Voltage
800
700
600
4.275
4.250
VTERM (V)
900
ACT3704-006
4.300
ACT3704-005
1000
IBAT (mA)
325
VIN = 5V
VBAT = 3.7V
RISET = 47k
500
400
300
4.225
4.200
4.175
4.150
200
VIN = 5V
VBAT = 3.7V
ADJ = G
100
0
0
50
RISET = 47k
IBAT = 100mA
ADJ = IN
4.125
100
150
200
250
300
4.100
5.0
350
RISET (k)
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5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
VIN (V)
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ACT3704
Rev2, 26-Jul-07
TYPICAL PERFORMANCE CHARACTERISTICS CONT’D
(VIN = 5V, TA = 25°C, unless otherwise specified.)
Battery Termination Voltage vs. Temperature
Battery Termination Voltage VTERM (V)
4.210
4.200
4.190
VIN = 5V
IN ==5V
RVISET
47k
ADJ==GIN
ADJ
4.180
-50
-25
0
25
50
75
85
4.120
ACT3704-008
4.220
ACT3704-007
Battery Termination Voltage VTERM (V)
Battery Termination Voltage vs. Temperature
4.110
4.100
4.090
4.080
-50
VIN = 5V
ADJ = G
0
-25
Temperature (°C)
470
VIN = 5V
RISET = 47k
ADJ = VIN
20
0
40
60
80
2.83
2.81
2.79
2.77
2.75
2.73
2.71
2.70
-40
-20
0
20
40
60
80
Temperature (°C)
Temperature (°C)
Internal Charge Timer Frequency vs. Temperature
Undervoltage Lockout Voltage vs. Temperature
VIN = 7V
VIN = 5V
1.175
4.10
1.125
4.00
3.90
1.075
1.025
1.000
-40
ACT3704-0012
1.275
1.225
4.20
ACT3704-0011
1.325
Frequency (kHz)
Precondition Threshold Voltage (V)
490
UVLO (V)
IBAT (mA)
510
2.85
ACT3704-010
530
-20
85
Precondition Threshold Voltage vs. Ambient Temperature
ACT3704-009
550
-40
75
Temperature (°C)
Charge Current vs. Ambient Temperature
450
50
25
3.80
-15
10
35
60
-40
85
10
35
60
85
Temperature (°C)
Temperature (°C)
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ACT3704
Rev2, 26-Jul-07
FUNCTIONAL BLOCK DIAGRAM
IN
BODY
BAT
Q1
UVLO
REG
REF
ADJ
VREF = 1.20V
-
ADJCTRL
+
Thermal
Foldback
TJ > 120°C
CVAMP
BAT
+
-
1V
CCAMP
+
+
EOCCOMP
-
CHARGE
CONTROL
G
ISET
OSCILLATOR
TIMER
nSTAT
nEOC
7mA
7mA
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ACT3704
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FUNCTIONAL DESCRIPTION
The ACT3704 is an intelligent, stand-alone Constant-Current, Constant-Voltage control (CC/CV),
linear-mode, single-cell charger for Lithium-Based
cell chemistries. The device incorporates current
and voltage sense circuitry, an internal 12V power
MOSFET, a 120°C thermal-regulation loop that minimizes total charge time, a complete state-machine
that implements charge safety features, and circuitry
that eliminates the reverse-blocking diode required
by conventional charger designs.
The ACT3704 features an accurate charge termination voltage, programmable fast-charge constant
current, and a programmable charge safety timeout
period. Other features include current-limited nSTAT
and nEOC outputs that can directly drive LED indicators without external resistors or provide a logiclevel status signal to the host microprocessor.
CC/CV Regulation Loop
At the core of the ACT3704 is a CC/CV regulation
loop, which regulates either current or voltage as
necessary to ensure fast and safe charging of the
battery.
In a normal charge cycle, this loop regulates the current to the value set by RISET. Charging continues at
this current until the battery voltage reaches the
charge termination voltage. At this point the CV loop
takes over, and charge current is allowed to decrease as necessary to maintain charging at the
charge termination voltage.
Setting The Charge Termination Voltage
The ACT3704 offers two pin-programmable battery
termination voltages; connect ADJ to G to select a
4.10V termination voltage, connect ADJ to IN (or to
a voltage greater than 1.4V) to select a 4.20V termination voltage.
Charge Current Programming
The maximum charging current is programmed by
an external resistor (RISET) connected from ISET to
G.
Calculate RISET as follows:
RISET = 22kΩ × (1.20V / IBAT )
(1)
The voltage at ISET is fixed at 1.20V, and the maximum charge current at BAT is set by:
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RISET(kΩ)
Charge Current (mA)
89
297
64
413
56
470
47
562
33
800
27
989
The RISET values in Table 1 are standard 1%. Note
that the actual charging current may be limited to a
current that is lower than the programmed fastcharge current due to the ACT3704’s internal thermal-regulation loop. See the Thermal Regulation
Loop section for more information.
Thermal Regulation Loop
The ACT3704 features an internal thermal regulation loop that reduces the charging current as necessary to ensure that the die temperature does not
rise beyond the thermal regulation threshold of
120°C. This feature protects the ACT3704 against
excessive junction temperature and makes the
ACT3704 more accommodating to aggressive thermal designs. Note, however, that attention to good
thermal designs is required to achieve the fastest
possible charge time by maximizing charge current.
In order to account for the extended total charge
time resulting from operation in thermal regulation
mode, the charge timeout periods are extended
proportionally to the reduction in charge current. In
order to ensure a safe charge, the maximum timeout periods are limited to 2x the room temperature
values.
The conditions that cause the ACT3704 to reduce
charge current in accordance to the internal thermal
regulation loop can be approximated by calculating
the power dissipated in the part. Most of the power
dissipation is generated from the internal charge
MOSFET (Q1 in the Functional Block Diagram).
The power dissipation is calculated to be approximately:
PD = (VIN - VBAT ) × IBAT
Where IBAT is Amps.
IBAT = 22kΩ × (1.20V / RISET )
Table 1:
Charge Current Programming
(2)
(3)
PD is the power dissipated, VIN is the input supply
voltage, VBAT is the battery voltage and IBAT is the
charge current. The approximate ambient tempera-8-
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ACT3704
Rev2, 26-Jul-07
ture at which the thermal regulation begins to protect the IC is given by :
T A = 120 °C − PD × θ JA
(4)
T A = 120 °C - (VIN - VBAT ) × I BAT × θ JA
1000mA to a battery from a 5V supply at 25°C.
Without a good backside thermal connection, this
number could drop to less than 500mA.
State Machine
Precondition State
Example: The ACT3704 is operating from a 5V wall
adapter and is programmed to supply 700mA fast
charge current to a discharged Li-Ion battery with a
voltage of 3.4V. Assuming θJA is 45°C/W, the ambient temperature at which the device will begin to
reduce the charge current is approximately:
A new charging cycle begins with the PRECONDITION state, and operation continues in this state
until VBAT exceeds the Precondition Threshold Voltage of 2.8V.
T A = 120 °C - (5V - 3.4V ) × (700 mA ) × 45 °C
IPRECONDITION = 2.200 × (VISET / RISET )
T A = 120 °C − 1 . 12 W × 45 °C = 120 °C − 50 . 4 °C
T A = 69 . 6 °C
(5)
The ACT3704 can be used above 69.6°C ambient,
but the charge current will be reduced from 700mA.
The approximate current at a given ambient temperature can be approximated by:
I BAT =
(120 °C − T A )
(VIN − VBAT ) × θ JA
(6)
Using the previous example with an ambient temperature of 70°C, the charge current will be reduced
to approximately:
I BAT =
(120 °C - 70 °C )
(5V - 3.4V ) × 45 °C / W
=
TA = 694 mA
(8)
Which is 10% of the programmed maximum fastcharge constant current, IBAT.
Once VBAT reaches the Precondition Threshold Voltage the state machine jumps to the NORMAL state.
If VBAT does not reach the Precondition Threshold
Voltage before the Precondition Timeout period
(TPRECONDITION) expires, then a damaged cell is detected and the state machine jumps to the TIMEOUT-FAULT State. The Precondition Timeout period is default to 20mins with an external 2.2nF
CTIMER capacitor, or it can be increased with a larger
value capacitor. See the Safely Timers section for
more information.
Normal State
Normal state is made up of two operating modes,
fast charge Constant-Current (CC) and ConstantVoltage (CV).
50 °C
72 °C / A
(7)
ACT3704 applications do not need to be designed
for worst-case thermal conditions, since the part will
automatically reduce power dissipation if the thermal regulation threshold of approximately 120°C is
reached.
However, in order to deliver maximum charge current under all conditions, it is critical that the exposed metal pad on the backside of the package
exposed pad (EP) is soldered directly to the PC
board ground. Correctly soldered to a double sided
1oz copper board, the ACT3704 has a thermal resistance of approximately 45°C/W with SOP8 and
36.7°C/W with TDFN33-8. Failure to make thermal
contact between the exposed pad on the backside
pf the package and the copper board will result in
thermal resistances far greater than 45°C/W with
SOP8 and 36.7°C/W with TDFN33-8. For example,
a correctly soldered ACT3704 can deliver up to
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When operating in PRECONDITION state, the cell
is charged at a reduced current given by:
In CC mode, the ACT3704 charges at the current
programmed by RISET (see the Charge Current Programming section for more information). During a
normal charge cycle fast-charge continues in CC
mode until VBAT reaches the charge termination voltage (VTERM), at which point the ACT3704 charges in
CV mode. Charging continues in CV mode until the
charge current drops to 10% of the programmed
maximum charge current (IBAT), at which point the
state machine jumps to the TOP-OFF state.
If VBAT does not proceed out of the NORMAL state
before the Normal Timeout period (TNORMAL) expires,
then a damaged cell is detected and the state machine jumps to the TIMEOUT-FAULT State.
The Normal Timeout period is default to 30mins, or
it can be increased with an external 2.2nF CTIMER
capacitor or can be changed with a larger value
external capacitor. See the Safety Times section for
more information.
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Top-Off State
In the TOP-OFF state, the cell is charged in constant-voltage (CV) mode, with the charge current
limited by the internal chemistry of the cell, decreasing as charging continues.
If the ACT3704 state machine does not complete a
charging cycle before the TOP-OFF Timeout period
(TTOPOFF) expires, then a damaged cell is detected
and the state machine jumps to the TIMEOUTFAULT State.
The TOP-OFF Timeout period is default to 60mins
with a 2.2nF CTIMER capacitor, or it can be increased
with a larger value external capacitor. See the
Safety Timers section for more information.
In TOP-OFF state, nSTAT indicates charge complete but charge current still continues. After another
delay of 60mins, then charging stops and charge
current becomes zero. When the battery voltage
drops below the charge restart voltage, the charging
process will start again.
End of Charge State
In the End of Charge (EOC) state, the ACT3704
presents a high-impedance to the battery, allowing
the cell to “relax” and minimize battery leakage current. The ACT3704 continues to monitor the cell
voltage, however, so that it can reinitiate charging
cycles as necessary to ensure that the cell remains
fully charged.
Charge Restart
Under normal operation, the state machine initiates
a new charging cycle by jumping to the NORMAL
CHARGE state when VBAT drops below the Charge
Termination Threshold by more than the Charge Restart Threshold of 100mV (typ).
Timeout-Fault State
In TIMEOUT-FAULT state, both nSTAT and nEOC
indicators are OFF, or high-Z.
For a logic-level indication, simply connect a resistor
from each output to an appropriate voltage supply.
Reverse Battery & Shutdown
The ACT3704 includes internal circuitry that eliminates the need for series blocking diodes, reducing
solution size and cost as well as dropout voltage
relative to conventional battery chargers. When VIN
goes below the ACT3704’s under voltage-lockout
(UVLO) voltage, or when VIN drops below VBAT, the
ACT3704 automatically goes into SUSPEND mode
and reconfigures its power switch to minimize current drain from the battery.
Safety Timers
The ACT3704 has several internal charge safety
timers, for each of the PRECONDITION and NORMAL charge states as well as TOPOFF timeout period. If any of these timers expire before charge successfully proceeds through the associated state, the
ACT3704 enters the TIMEOUT-FAULT state. The
TIMEOUT-FAULT state can only be reset by powercycling the ACT3704.
Each of these timers are internally set according to
the following ratios:
TPRECONDITION = 1 × TO
(9)
TNORMAL = 1.5 × TO
(10)
TTOTAL = 3 × TO
(11)
All the timers could be set by an external capacitor
by (CTIMER in nF) where TO is given by:
TO = 9 × CTIMER ± 15%
(12)
When operating in thermal regulation mode the
timeout periods are extended in order to compensate for the effect of the reduced charging current
on total charge time. In order to ensure a safe
charge, the maximum timeout periods are limited to
2x the room temperature values.
Charge and EOC Status Outputs
nSTAT and nEOC are open-drain outputs that sink
current when asserted and are high-Z otherwise. For
more information regarding the state of nSTAT and
nEOC throughout the entire charging cycle, see Table 3. These outputs have internal 7mA current limits, and are capable of directly driving LEDs, without
the need of current-limiting resistors or other external circuitry, for a visual charge-status indication. To
drive an LED, simply connect the LED between
each pin and an appropriate supply (typically VIN).
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ACT3704
Rev2, 26-Jul-07
Table 2:
Safety Timer Settings
CTIMER
(nF)
TPRECONDITION
(minutes)
TNORMAL
(minutes)
TTOTAL
(minutes)
2.2
20
30
60
3.3
30
45
90
6
60
90
180
10
90
120
270
30
210
315
630
STATE DIAGRAM
ANY STATE
VIN < 4.0V
SUSPEND
VIN > 4.0V
PRECONDITION
Time > TPRECONDITION
VBAT > 2.8V
TIMEOUT-FAULT
Time > TNORMAL
VBAT < 2.7V
NORMAL
VBAT = VREG
VBAT < VREG
Time > TTOTAL
TOP OFF
IBAT < 10% ICHRG
and T > TEOC
END OF CHARGE
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VBAT < VTERM - 0.1V
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ACT3704
Rev2, 26-Jul-07
Figure 1:
Typical Li+ Charge Profile and ACT3704 Charge States
VTERM
4.20V
IBAT
510mA
Current
Voltage
VPRECONDITION
2.75V
IPRECONDITION, IEOC
51mA
TEOC
A
STATE
B
C
D
A: PRECONDITION State
B: NORMAL State
C: TOP-OFF State
D: END OF CHARGE State
STATUS AND EOC INDICATORS
Table 3:
nSTAT and nEOC Indicator States
STATE
nSTAT
nEOC
SHUTDOWN
OFF
OFF
PRECONDITION
ON
OFF
NORMAL
ON
OFF
TOPOFF
ON
OFF
DELAY TIME TO EOC
OFF
ON
END OF CHARGE
OFF
ON
TIMEOUT FAULT
OFF
OFF
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Copyright © 2007 Active-Semi, Inc.
ACT3704
Rev2, 26-Jul-07
APPLICATION INFORMATION
Figure 2:
Application Circuit for 4.1V Battery, 470mA Charge
VIN
CIN
10µF
nEOC
ADJ
nSTAT
BAT
ACT3704
CTIMER = 10nF
TIMER
IN
RISET
56k
ISET
CBAT
1µF
Li+ or
Li-POLYMER
BATTERY
G
Figure 3:
Application Circuit for 4.2V Battery, 800mA Charge
Innovative Products. Active Solutions.
- 13 -
www.active-semi.com
Copyright © 2007 Active-Semi, Inc.
ACT3704
Rev2, 26-Jul-07
PACKAGE OUTLINE
SOP-8/EP PACKAGE OUTLINE AND DIMENSIONS
D
b
e
D1
SYMBOL
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DIMENSION IN
INCHES
MIN
MAX
MIN
MAX
A
1.350
1.750
0.053
0.069
A1
0.050
0.150
0.002
0.006
A2
1.350
1.550
0.053
0.061
b
0.330
0.510
0.013
0.020
c
0.170
0.250
0.007
0.010
D
4.700
5.100
0.185
0.200
D1
3.202
3.402
0.126
0.134
E
3.800
4.000
0.150
0.157
E1
5.800
6.200
0.228
0.244
E2
2.313
2.513
0.091
0.099
e
Innovative Products. Active Solutions.
DIMENSION IN
MILLIMETERS
1.270 TYP
0.050 TYP
L
0.400
1.270
0.016
0.050
θ
0°
8°
0°
8°
www.active-semi.com
Copyright © 2007 Active-Semi, Inc.
ACT3704
Rev2, 26-Jul-07
PACKAGE OUTLINE
TDFN33-8 PACKAGE OUTLINE AND DIMENSIONS
SYMBOL
MAX
MIN
MAX
A
0.700
0.800
0.028
0.031
A1
0.000
0.050
0.000
0.002
A3
0.153
0.253
0.006
0.010
D
2.900
3.100
0.114
0.122
E
2.900
3.100
0.114
0.122
D2
2.200
2.400
0.087
0.094
E2
1.400
1.600
0.055
0.063
b
0.200
0.320
0.008
0.013
L
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DIMENSION IN
INCHES
MIN
e
Innovative Products. Active Solutions.
DIMENSION IN
MILLIMETERS
0.650 TYP
0.375
0.575
0.026 TYP
0.015
0.023
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Copyright © 2007 Active-Semi, Inc.
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