BQ2057CTSTRG4 Datasheet, PDF (6/30 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
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
CURRENT REGULATION
bq2057 and bq2057C,
High-side current sensing configuration
V(SNS)
Current regulation
threshold
bq2057T and bq2057W,
High-side current sensing configuration
bq2057 and bq2057C,
Low-side current sensing configuration
bq2057T and bq2057W,
Low-side current sensing configuration
CHARGE TERMINATION DETECTION
I(TERM)
Charge termination
current detect
threshold
TEMPERATURE COMPARATOR
Voltage at pin SNS, relative to VCC for high-side
sensing, and to Vss for low-side sensing,
0°C ≤ TA ≤ 50°C
V(TS1)
V(TS2)
Lower temperature
threshold
Upper temperature
threshold
TS pin voltage
PRECHARGE COMPARATOR
bq2057
V(min)
Precharge
threshold
bq2057C
bq2057T
bq2057W
PRECHARGE CURRENT REGULATION
Precharge current
I(PRECHG) _regulation
Voltage at pin SNS, relative to VCC for high-side
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
VRCH COMPARATOR (Battery Recharge Threshold)
V(RCH)
Recharge
threshold
bq2057 and bq2057C
bq2057T and bq2057W
CHARGE-RATE COMPENSATION (AutoComp)
G(COMP) AutoComp gain
V(BAT)+0.3 V≤ VCC ≤ VCC(max), bq2057, bq2057C,
bq2057T, bq2057W
V(BAT)+0.3 V ≤ VCC ≤ VCC(max), bq2057T and
bq2057W in low-side sensing configuration
STAT PIN
Output (low)
VOL(STAT) _voltage
IOL = 10 mA
VOH(STAT)
Output (high)
voltage
IOH = 5 mA
CC PIN
VOL(CC)
IO(CC)
Output low voltage IO(CC) = 5 mA (sink)
Sink current
Not to exceed power rating specification (PD)
MIN
95.4
113.6
100
118.1
−24
29.1
58.3
2.94
3.04
5.98
6.18
3
VO(REG)−
98 mV
VO(REG)−
196 mV
1.87
2.09
VCC-0.5
5
TYP
105
125
110
130
−14
30
60
3
3.1
6.1
6.3
13
13
VO(REG)−
100 mV
VO(REG)−
200 mV
2.2
2.4
MAX
115.5
137.5
121
143
−4
30.9
61.8
3.06
3.16
6.22
6.43
22
VO(REG)−
102 mV
VO(REG)−
204 mV
2.53
2.76
0.7
1.5
40
UNIT
mV
mV
%VCC
V
mV
mV
V
V/V
V
V
mA
6
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