BQ2057CSN BENCHMARQ, BQ2057CSN Datasheet - Page 6

• Manufacturer Part Number: BQ2057CSN
• Description: PROG BATTERY CHARGER, 2057, SOIC8
• Manufacturer: BENCHMARQ

Specifications of BQ2057CSN

• Battery Type: Li-Ion / Li-Polymer
• Input Voltage: 15V
• Battery Charge Voltage: 4.2V
• Charge Current Max: 2A
• Battery Ic Case Style: SOIC
• No. Of Pins: 8
• No. Of Series Cells: 1
• Operating Temperature: RoHS Compliant

6
SLUS025F − MAY 2001 − REVISED JULY 2002
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (continued)
CURRENT REGULATION
V (SNS)
V (SNS)
CHARGE TERMINATION DETECTION
I (TERM)
TEMPERATURE COMPARATOR
V (TS1)
V (TS2)
PRECHARGE COMPARATOR
V (min)
V (min)
PRECHARGE CURRENT REGULATION
I (PRECHG)
I (PRECHG)
V RCH COMPARATOR (Battery Recharge Threshold)
V (RCH)
V (RCH)
CHARGE-RATE COMPENSATION (AutoComp)
G (COMP)
G (COMP)
STAT PIN
V OL(STAT)
V OH(STAT)
CC PIN
V OL(CC)
I O(CC)
PARAMETER
Current regulation
Current regulation
threshold
Charge termination
current detect
threshold
Lower temperature
threshold
Upper temperature
threshold
Precharge
Precharge
threshold
threshold
Precharge current
regulation
regulation
Recharge
Recharge
threshold
AutoComp gain
AutoComp gain
Output (low)
voltage
Output (high)
voltage
Output low voltage
Sink current
bq2057 and bq2057C,
High-side current sensing configuration
bq2057T and bq2057W,
High-side current sensing configuration
bq2057 and bq2057C,
Low-side current sensing configuration
bq2057T and bq2057W,
Low-side current sensing configuration
Voltage at pin SNS, relative to V CC for high-side
sensing, and to Vss for low-side sensing,
0°C ≤ T A ≤ 50°C
TS pin voltage
TS pin voltage
bq2057
bq2057C
bq2057T
bq2057W
Voltage at pin SNS, relative to V CC for high-side
sensing, and to V SS for low-side sensing,
0°C ≤ T A ≤ 50°C
Voltage at pin SNS, relative to V CC for high-side
sensing, 0°C ≤ T A ≤ 50°C, V CC = 5 V
bq2057 and bq2057C
bq2057T and bq2057W
V (BAT) +0.3 V ≤ V CC ≤ V CC(max) , bq2057, bq2057C,
bq2057T, bq2057W
V (BAT) +0.3 V ≤ V CC ≤ V CC(max) , bq2057T and
bq2057W in low-side sensing configuration
I OL = 10 mA
I OH = 5 mA
I O(CC) = 5 mA (sink)
Not to exceed power rating specification (P D )
TEST CONDITIONS
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V O(REG) −
V O(REG) −
V CC -0.5
196 mV
98 mV
113.6
118.1
95.4
29.1
58.3
2.94
3.04
5.98
6.18
1.87
2.09
MIN
100
−24
3
5
V O(REG) −
V O(REG) −
100 mV
200 mV
TYP
105
125
110
130
−14
3.1
6.1
6.3
2.2
2.4
30
60
13
13
3
V O(REG) −
V O(REG) −
102 mV
204 mV
137.5
115.5
MAX
30.9
61.8
3.06
3.16
6.22
6.43
2.53
2.76
121
143
0.7
1.5
−4
22
40
%V CC
%V CC
UNIT
V/V
V/V
mV
mV
mV
mV
mV
mA
V
V
V
V
V
V
V