参数资料
型号: BQ2057TSG4
厂商: Texas Instruments
文件页数: 5/31页
文件大小: 0K
描述: IC LITH-ION LDO CHRG MGMT 8TSSOP
标准包装: 150
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.5 V ~ 15 V
工作温度: -20°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 管件
配用: 296-9502-ND - EVAL MOD FOR BQ257T
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.
DISSIPATION RATING TABLE
PACKAGE
DGK
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
MIN
MAX
UNIT
Supply voltage, VCC
Operating free-air temperature range, TA
4.5
?20
15
70
V
° C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
I(VCC)
I(VCCS)
IIB(BAT)
IIB(SNS)
IIB(TS)
IIB(COMP)
VCC Current
VCC Sleep current
Input bias current on BAT pin
Input bias current on SNS pin
Input bias current on TS pin
Input bias current on COMP pin
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
V(BAT) = V(REG)
V(SNS)= 5 V
V(TS) = 5 V
V(COMP) = 5 V
2
3
4
6
10
1
5
5
5
mA
μ A
μ A
μ A
μ A
μ A
BATTERY VOLTAGE REGULATION
bq2057, See Notes 1, 2, 3
bq2057C, See Notes 1, 2, 3
4.059
4.158
4.10
4.20
4.141
4.242
VO(REG)
Output voltage
bq2057T, See Notes 1, 2, 3
8.119
8.20
8.282
V
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)
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