参数资料
型号: BQ2057TSG4
厂商: Texas Instruments
文件页数: 6/31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
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT REGULATION
bq2057 and bq2057C,
High-side current sensing configuration
95.4
105
115.5
V(SNS)
Current regulation
threshold
bq2057T and bq2057W,
High-side current sensing configuration
bq2057 and bq2057C,
Low-side current sensing configuration
113.6
100
125
110
137.5
121
mV
bq2057T and bq2057W,
Low-side current sensing configuration
118.1
130
143
CHARGE TERMINATION DETECTION
Charge termination
Voltage at pin SNS, relative to VCC for high-side
I(TERM)
current detect
threshold
sensing, and to Vss for low-side sensing,
0 ° C ≤ TA ≤ 50 ° C
?24
?14
?4
mV
TEMPERATURE COMPARATOR
V(TS1)
Lower temperature
threshold
29.1
30
30.9
V(TS2)
Upper temperature
threshold
TS pin voltage
58.3
60
61.8
%VCC
PRECHARGE COMPARATOR
bq2057
2.94
3
3.06
V(min)
Precharge
threshold
bq2057C
bq2057T
3.04
5.98
3.1
6.1
3.16
6.22
V
bq2057W
6.18
6.3
6.43
PRECHARGE CURRENT REGULATION
Voltage at pin SNS, relative to VCC for high-side
I(PRECHG)
Precharge current
regulation
sensing, and to VSS for low-side sensing,
0 ° C ≤ TA ≤ 50 ° C
Voltage at pin SNS, relative to VCC for high-side
sensing, 0 ° C ≤ TA ≤ 50 ° C, VCC = 5 V
3
13
13
22
mV
mV
VRCH COMPARATOR (Battery Recharge Threshold)
V(RCH)
Recharge
threshold
bq2057 and bq2057C
bq2057T and bq2057W
VO(REG)?
98 mV
VO(REG)?
196 mV
VO(REG)?
100 mV
VO(REG)?
200 mV
VO(REG)?
102 mV
VO(REG)?
204 mV
V
CHARGE-RATE COMPENSATION (AutoComp)
V(BAT)+0.3 V ≤ VCC ≤ VCC(max), bq2057, bq2057C,
bq2057T, bq2057W
1.87
2.2
2.53
G(COMP)
AutoComp gain
V(BAT)+0.3 V ≤ VCC ≤ VCC(max), bq2057T and
bq2057W in low-side sensing configuration
2.09
2.4
2.76
V/V
STAT PIN
VOL(STAT)
Output (low)
voltage
IOL = 10 mA
0.7
VOH(STAT)
Output (high)
voltage
IOH = 5 mA
VCC-0.5
V
CC PIN
VOL(CC)
Output low voltage
IO(CC) = 5 mA (sink)
1.5
V
IO(CC)
Sink current
Not to exceed power rating specification (PD)
5
40
mA
6
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