ETC EUP8010X

芯美电子
EUP8010X
Linear Li-Ion/Polymer Charger IC with
Integrated FET and Charger Timer
DESCRIPTION
FEATURES
The EUP8010X series are highly integrated single cell
Li-Ion/Polymer battery charger IC designed for handheld
devices. The EUP8010X integrates internal power FET,
current sensor, charge status and reverse current protection
in a single monolithic devices.When AC-adapter is applied,
an external resistor sets the magnitude of the charge
current, which may be programmed up to 1A.
The EUP8010X charges the battery in three phases:
conditioning, constant current, and constant voltage.
Charge is terminated based on minimum current. An
internal charge timer provides a backup safety for charge
termination. The EUP8010X automatically re-starts the
charge if the battery voltage falls below an internal
threshold. The EUP8010X also automatically enters sleep
mode when DC supplies are removed. No external sense
resistor or blocking diode is required for charging.
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Integrated Power FET and Current Sensor for Up
to 1A Charge Applications
Charge Termination by Minimum Current and
Time
Precharge Conditioning With Safety Timer
Reverse Leakage Protection Prevents Battery
Drainage
Status Outputs for LED or System Interface
Indicates Charge and Fault Conditions
Optional Battery Temperature Monitoring Before
and During Charge
Automatic Sleep Mode for Low-Power
Consumption
Available in 3mm × 3mm TDFN-10 Package
RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
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Smartphones
Digital Cameras
PDAs/ MP3 Players
Stand-Alone Chargers
Typical Application Circuit
Figure 1. EUP8010B
DS8010X Ver 1.2 June 2007
1
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EUP8010X
Block Diagram
Figure 2.
DS8010X Ver 1.2 June 2007
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EUP8010X
Pin Configurations
Package Type
Pin
Configurations
Package Type
EUP8010A
TDFN-10
EUP8010B
TDFN-10
EUP8010C
TDFN-10
EUP8010D
TDFN-10
Pin
Configurations
Pin Description
PIN
A
B
C
D
I/O
AC
1
1
1
1
I
Charge input voltage. This input must be tied to the VCC pin.
VCC
2
2
2
2
I
VCC supply input
STAT1
3
3
3
3
O
Charge status output 1 (open collector)
STAT2
4
4
4
4
O
Charge status output 2 (open collector)
VSS
5
5
5
5
-
Ground input
ISET
6
6
6
6
O
Charge current set point
PG
7
7
-
-
O
Power good status output (open collector)
TS
8
-
-
8
I
Temperature sense input
CE
-
8
7
7
I
Charge enable input (active low)
TTE
BAT
-
-
8
-
I
Timer and termination enable input (active low)
9
9
9
9
I
Battery voltage sense input
OUT
10
10
10
10
O
Charge current output
DS8010X Ver 1.2 June 2007
DESCRIPTION
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EUP8010X
Ordering Information
Order Number
Package Type
EUP8010A-JIR1
TDFN-10
EUP8010B-JIR1
TDFN-10
EUP8010C-JIR1
TDFN-10
EUP8010D-JIR1
TDFN-10
Marking
xxxxx
8010A
xxxxx
8010B
xxxxx
8010C
xxxxx
8010D
Operating Temperature range
-20 °C to 70°C
-20 °C to 70°C
-20 °C to 70°C
-20 °C to 70°C
EUP8010X- □ □ □ □
Lead Free Code
1: Lead Free 0: Lead
Packing
R: Tape& Reel
Operating temperature range
I: Industry Standard
Package Type
J: TDFN-10
DS8010X Ver 1.2 June 2007
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EUP8010X
Absolute Maximum Ratings
„
Input voltage(AC,VCC, CE , ISET,OUT,BAT, PG ,STAT1,STAT2, TS, TTE ) -------------------- 0.3V to 6V
„
Output sink / source current (STAT1,STAT2, PG ) ---------------------------------------------------- 15mA
„
Output current (TS ) --------------------------------------------------------------------------------------- 200μA
„
Output current (OUT) ------------------------------------------------------------------------------------- 1.5 A
Junction temperature range, TJ ------------------------------------------------------------------------- 150°C
Storage temperature range, Tstg ------------------------------------------------------------- -65°C to 150°C
Lead temperature (soldering, 10s) -------------------------------------------------------------------260°C
„
„
„
Dissipation Ratings
Package
θJA
TDFN-10
48°C/W
Derating Factor
Above TA =25°C
0.0208 W/°C
TA < 40°C
Power Rating
1.5W
Recommended Operating Conditions (1)
Min.
Max.
Unit
Supply voltage (from AC input), VCC
4.5
5.5
V
Operating junction temperature range, TJ
-40
125
°C
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
Parameter
Conditions
EUP8010X
Unit
Min.
Typ. Max.
Input Current
VCC current, ICC(VCC)
Sleep current, ICC(SLP)
Standby current, ICC(STBY)
VCC > VCC(min)
Sum of currents into OUT pin,
VCC < V(SLP)
CE = High, 0°C ≤ TJ ≤ 85°C
0.9
1.5
mA
1
5
µA
50
150
Voltage Regulation
Output voltage, VO(REG)
Voltage regulation accuracy
AC dropout voltage (V(AC)-V(OUT)),
V(DO)
Current Regulation
AC output current range, IO(OUT) (1)
Output current set voltage, V(SET)
Output current set factor, K(SET)
DS8010X Ver 1.2 June 2007
V
4.2
TA = 25°C
-0.5%
0.5%
-1.5%
1.5%
VO(OUT) = VO(REG), IO(OUT) = 1A
VI(BAT) >V(LOWV), VCC ≥ 4.5 V
Voltage on ISET pin, VCC ≥ 4.5 V,
VI(BAT) > V(LOWV),
50 mA ≤ IO(OUT) ≤ 1 A
400
50
500
mV
1000
mA
V
2.410
2.460
2.510
304
320
336
10 mA ≤ IO(OUT) < 50 mA
294
320
346
1 mA ≤ IO(OUT) < 10 mA
246
320
416
5
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EUP8010X
Electrical Characteristics Over Recommended Operating Free-Air Temperature Range
Parameter
Conditions
Precharge and Short-Circuit Current Regulation
Precharge to fast-charge transition
Voltage on OUT pin
threshold, V(LOWV)
Deglitch time for fast-charge to
precharge transition
Precharge range, IO(PRECHG) (2)
0 V < VI(BAT) < V(LOWV)
Voltage on ISET pin,
Precharge set voltage, V(PRECHG)
0 V < VI(BAT) > V(LOWV)
Charge Taper and Termination Detection
Charge taper detection range,
VI(BAT) > V(RCH)
I(TAPER) (3)
Charge taper detection set voltage,
Voltage on ISET pin, VO(REG) = 4.2V,
V(TAPER)
VI(BAT) > V(RCH)
Charge termination detection set
Voltage on ISET pin, VO(REG) = 4.2V,
voltage, V(TERM) (4)
VI(BAT) > V(RCH)
Deglitch time for TAPER detection,
tTPRDET
Deglitch time for termination detection,
tTRMDET
Temperature Sense Comparator
EUP8010X
Unit
Min.
Typ. Max.
2.8
3.0
3.2
V
250
375
500
ms
100
mA
260
mV
100
mA
5
230
245
5
235
250
265
11
18
25
250
375
500
mV
ms
250
375
500
Low-voltage threshold, V(LTF)
2.49
2.515
2.54
High-voltage threshold, V(HTF)
0.495
0.510
0.525
102
112
122
µA
250
375
500
ms
Current source, I(TS)
Deglitch time for temperature fault,
t(DEGL)
Battery Recharge Threshold
VO(REG) VO(REG) VO(REG)
-0.10 -0.050
-0.150
Recharge threshold, VRCH
Deglitch time for recharge detect,
t(DEGL)
STAT1, STAT2, and PG Outputs
Low-level output saturation voltage,
IO = 5 mA
VOL
 K (SET) × V(SET)
(1) I O(OUT) = 

R SET

250
 K (SET) × V(TERM)
(4) I O(TERM) = 
R SET

V
500
ms
0.25
V
 K (SET) × V(PRECHG)
(2) I O(PRECHG) = 

R SET





× V(TAPER ) 
K
(3) I O(TAPER ) =  (SET)



R SET


DS8010X Ver 1.2 June 2007
375
V








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EUP8010X
Parameter
Conditions
EUP8010X
Unit
Min.
Typ. Max.
Charge Enable ( CE ), Timer and Termination Enable ( TTE ) Inputs
Low-level input voltage, VIL
IIL = 10 µA
0
High-level input voltage, VIH
IIL = 20 µA
1.4
CE or TTE low-level input current, IIL
0.4
-1
CE or TTE high-level input current, IIH
1
V
µA
Timers
Precharge time, t(PRECHG)
1,650
1,940
2,230
2,230
Taper time, t(TAPER)
8010A,8010B,8010C,8010D
1,650
1,940
Charge time, t(CHG)
8010A,8010B,8010C,8010D
16,500
19,400 22,300
Timer fault recovery current, I(FAULT)
Sleep Comparator
Sleep-mode entry threshold voltage,
V(SLP)
Sleep mode exit threshold voltage,
V(SLPEXIT)
Sleep mode deglitch time
200
2.3 V ≤ VI(BAT) ≤ VO(REG)
2.3 V ≤ VI(BAT) ≤ VO(REG)
s
µA
VCC ≤ VI(BAT)
+100 mV
VCC ≥ VI(BAT)
+190mV
250
375
500
V
ms
Thermal Shutdown Thresholds
Thermal trip threshold, T(SHTDWN)
165
Thermal hysteresis
30
°C
Undervoltage Lockout
Undervoltage lockout V(UVLO)
Decreasing VCC
2.2
Hysteresis
DS8010X Ver 1.2 June 2007
2.4
2.6
20
7
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mV
芯美电子
EUP8010X
Application Information
Figure 3. Operational Flow Chart
DS8010X Ver 1.2 June 2007
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Functional Description
Temperature Qualification ( 8010A,8010D Only)
The EUP8010X continuously monitors battery
temperature by measuring the voltage between the TS
and VSS pins.
An internal current source provides the bias for most
common 10-kΩ negative-temperature coefficient
thermistors (NTC) (see Figure 4). The device compares
the voltage on the TS pin against the internal V(LTF) and
V(HTF) thresholds to determine if charging is allowed.
Once a temperature outside the V(LTF) and V(HTF)
thresholds is detected the device immediately suspend the
charge. The device suspend charge by turning off the
power FET and holding the timer value (i.e. timers are
NOT reset). Charge is resumed when the temperature
returns to the normal range.
However the user may modify these thresholds by adding
two external resistors. See Figure 5.
Battery Pre-Conditioning
During a charge cycle if the battery voltage is below the
V(LOWV) threshold, the EUP8010X applies a precharge
current, IO(PRECHG), to the battery. This feature revives
deeply discharged cells. The resistor connected between
the ISET and VSS, RSET, determines the precharge rate.
The V(PRECHG) and K(SET) parameters are specified in the
specifications table.
I O(PRECHG) =
V(PRECGH ) × K (SET )
R SET
------------ (1)
The EUP8010X activates a safety timer, t(PRECHG), during
the conditioning phase. If V(LOWV) threshold is not
reached within the timer period, the EUP8010X turns off
the charger and enunciates FAULT on the STATx pins.
Please refer to the Timer Fault Recovery section for
additional details.
Figure 5. Temperature Sensing Thresholds
Battery Charge Current
The EUP8010X offers on-chip current regulation with
programmable set point. The resistor connected between
the ISET and VSS, RSET, determines the AC charge rate.
The V(SET) and K(SET) parameters are specified in the
specifications table.
I O(OUT) =
V(SET ) × K (SET )
R SET
---------------------- (2)
Battery Voltage Regulation
The voltage regulation feedback is through the OUT pin.
This input is tied directly to the positive side of the
battery pack. The EUP8010X monitors the battery pack
voltage between the OUT and VSS pins. When the
battery voltage rises to VO(REG) threshold, the voltage
regulation phase begins and the charging current begins
to taper down.
As a safety backup, the EUP8010X also monitors the
charge time in the charge mode. If charge is not
terminated within this time period, t(CHG), the EUP8010X
turns off the charger and enunciates FAULT on the
STATx pins. Please refer to the Timer Fault Recovery
section for additional details.
Figure 4. Temperature Sensing Configuration
DS8010X Ver 1.2 June 2007
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EUP8010X
Charge Taper Detection, Termination and Recharge
The EUP8010X monitors the charging current during the
voltage regulation phase. Once the taper threshold,
I(TAPER),is detected the EUP8010X initiates the taper timer,
t(TAPER). Charge is terminated after the timer expires. The
resistor connected between the ISET and VSS, RSET,
determines the taper detection level. The V(TAPER) and
K(SET) parameters are specified in the specifications table.
V(TAPER ) × K (SET )
I (TAPER) =
R SET
------------------ (3)
The EUP8010X resets the taper timer in the event that
the charge current returns above the taper threshold,
I(TAPER).
In addition to the taper current detection, the EUP8010X
terminates charge in the event that the charge current falls
below the I(TERM) threshold. This feature allows for quick
recognition of a battery removal condition or insertion of
a fully charged battery. Note that charge timer and taper
timer are bypassed for this feature. The resistor
connected between the ISET and VSS, RSET, determines
the taper detection level. The V(TERM) and K(SET)
parameters are specified in the specifications table.
I (TERM) =
V(TERM ) × K (SET )
R SET
Charge Status Outputs
The open-drain STAT1 and STAT2 outputs indicate
various charger operations as shown in the following
table. These status pins can be used to drive LEDs or
communicate to the host processor. Note that OFF
indicates the open-drain transistor is turned off.
Table 1. Status Pins Summary
CHARGE STATE
Precharge in progress
Fast charge in progress
Charge done
Charge suspend (temperature)
Timer fault
Sleep mode
STAT1 STAT2
ON
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF means the open-drain output transistor on the
STAT1 and STAT2 pins is in an off state.
PG Output
The open-drain PG (Power Good) indicates when the
AC adapter is present. The output turns ON when a valid
voltage is detected. This output is turned off in the sleep
mode. The PG pin can be used to drive an LED or
communicate to the host processor.
-------------------- (4)
CE Input (Charge Enable)
After charge termination, the EUP8010X re-starts the
charge once the voltage on the OUT pin falls below the
V(RCH) threshold. This feature keeps the battery at full
capacity at all times.
The CE digital input is used to disable or enable the
charge process. A low-level signal on this pin enables the
charge and a high-level signal disables the charge and
places the device in a low-power mode. A high-to-low
transition on this pin also resets all timers and timer fault
conditions.
Sleep Mode
The EUP8010X enters the low-power sleep mode if
AC-adapter is removed from the circuit. This feature
prevents draining the battery during the absence of input
supply.
TTE Input (Timer and Termination Enable)
The TTE digital input is used to disable or enable the
fast-charge timer and charge taper detection. A low-level
signal on this pin enables the fast-charge timer and taper
timer and a high-level signal disables this feature.
Thermal shutdown and Protection
The EUP8010X monitors the junction temperature, TJ, of
the die and suspends charging if TJ exceeds T(SHTDWN).
Charging resumes when TJ falls below T(SHTDWN) by
approximately 30 ℃.
DS8010X Ver 1.2 June 2007
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EUP8010X
Timer Fault Recovery
As shown in Figure 3, EUP8010X provides a recovery
method to deal with timer fault conditions. The following
summarizes this method:
Condition #1: Charge voltage above recharge threshold
(V(RCH)) and timeout fault occurs
Recovery method: EUP8010X waits for the battery
voltage to fall below the recharge threshold. This could
happen as a result of a load on the battery, self-discharge
or battery removal. Once the battery falls below the
recharge threshold, the EUP8010X clears the fault and
starts a new charge cycle. A POR or CE or TTE toggle
also clears the fault.
Condition #2: Charge voltage below recharge threshold
(V(RCH)) and timeout fault occurs
Recovery method: Under this scenario, the EUP8010X
applies the I(FAULT) current. This small current is used to
detect a battery removal condition and remains on as long
as the battery voltage stays below the recharge threshold.
If the battery voltage goes above the recharge threshold,
then the EUP8010X disables the I(FAULT) current and
executes the recovery method described for condition #1.
Once the battery falls below the recharge threshold, the
EUP8010X clears the fault and starts a new charge cycle.
A POR or CE or TTE toggle also clears the fault.
DS8010X Ver 1.2 June 2007
11
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EUP8010X
Packaging Information
TDFN-10
SYMBOLS
MILLIMETERS
MIN.
MAX.
MIN.
MAX.
A
0.70
0.80
0.028
0.031
A1
0.00
0.05
0.000
0.002
D
2.90
3.10
0.114
0.122
E1
DS8010X Ver 1.2 June 2007
INCHES
1.70
0.067
E
2.90
3.10
0.114
0.122
L
0.30
0.50
0.012
0.020
b
0.18
0.30
0.007
0.012
e
0.50
0.020
D1
2.40
0.094
12
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