BQ2057CTSTRG4 Datasheet, PDF (5/30 Pages) Texas Instruments – ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE-AND TWO-CELL LITHIUM-ION AND LITHIUM-POLYMER

bq2057, bq2057C
bq2057T, bq2057W
SLUS025F − MAY 2001 − REVISED JULY 2002
absolute maximum ratings over operating free-air temperature (unless otherwise noted)^†
Supply voltage (V_CC with respect to GND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to +18 V
Input voltage, SNS, BAT, TS, COMP (all with respect to GND) . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to V_CC+0.3 V
Sink current (STAT pin) not to exceed P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Source current (STAT pin) not to exceed P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA
Output current (CC pin) not to exceed P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
Total power dissipation, P_D (at 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mW
Operating free-air temperature range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20°C to 70°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 125°C
Lead temperature (soldering, 10 s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
† _{Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and}
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
PACKAGE
DGK
DISSIPATION RATING TABLE
DERATING FACTOR
ABOVE TA = 25°C
3.4 mW/°C
TA ≤ 25°C
POWER RATING
424 mW
TA = 70°C
POWER RATING
271 mW
recommended operating conditions
Supply voltage, VCC
Operating free-air temperature range, TA
MIN MAX UNIT
4.5
15 V
−20
70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
I(VCC)
VCC Current
I(VCCS) VCC Sleep current
VCC > VCC(min), Excluding external loads
For bq2057 and bq2957C,
V(BAT) ≥ V(min), V(BAT) – VCC ≥ 0.8 V
For bq2057T and bq2957W,
V(BAT) ≥ V(min), V(BAT) – VCC ≥ 0.8 V
2
4
3
6
10
IIB(BAT) Input bias current on BAT pin
V(BAT) = V(REG)
1
IIB(SNS) Input bias current on SNS pin
V(SNS)= 5 V
5
IIB(TS)
Input bias current on TS pin
V(TS) = 5 V
5
IIB(COMP) Input bias current on COMP pin V(COMP) = 5 V
5
BATTERY VOLTAGE REGULATION
bq2057, See Notes 1, 2, 3
4.059 4.10 4.141
VO(REG) Output voltage
bq2057C, See Notes 1, 2, 3
bq2057T, See Notes 1, 2, 3
4.158
8.119
4.20 4.242
8.20 8.282
bq2057W, See Notes 1, 2, 3
8.317 8.40 8.484
NOTES: 1. For high-side current sensing configuration
2. For low-side current sensing configuration, the tolerance is ±1% for TA = 25°C and ±1.2% for −20°C ≥ TA ≥ 70°C
3. V(BAT)+0.3 V ≤ VCC ≤ VCC(max)
UNIT
mA
µA
µA
µA
µA
µA
V
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