ZHCSRG2G May   2001  – December 2022 BQ2057C , BQ2057W

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 说明（续）
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Current-Sense Input
      2. 9.3.2 Battery-Voltage Input
      3. 9.3.3 Temperature Sense Input
      4. 9.3.4 Charge-status Output
      5. 9.3.5 Charge-Control Output
      6. 9.3.6 Charge-Rate Compensation Input
      7. 9.3.7 Supply Voltage Input
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1  Functional Description
      2. 10.1.2  Qualification and Precharge
      3. 10.1.3  Current Regulation Phase
      4. 10.1.4  Voltage Regulation Phase
      5. 10.1.5  Charge Termination and Recharge
      6. 10.1.6  Battery Temperature Monitoring
      7. 10.1.7  Charge Inhibit Function
      8. 10.1.8  Charge Status Indication
      9. 10.1.9  Low-power Sleep Mode
      10. 10.1.10 Selecting an External Pass-Transistor
      11. 10.1.11 Selecting Input Capacitor
      12. 10.1.12 Selecting Output Capacitor
      13. 10.1.13 Automatic Charge-rate Compensation
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Power FET
      2. 12.1.2 Current Sense
      3. 12.1.3 Voltage Sense
      4. 12.1.4 Enable (TS)
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 第三方产品免责声明
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 术语表
  14. 14Mechanical, Packaging, and Orderable Information

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8.5 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
I(VCC)VCC CurrentVCC > VCC(min), Excluding external loads24mA
I(VCCS)VCC Sleep currentFor BQ2057 and BQ2957C,
V(BAT) ≥ V(min), V(BAT) – VCC ≥ 0.8 V		36µA
For BQ2057T and BQ2957W,
V(BAT) ≥ V(min), V(BAT) – VCC ≥ 0.8 V		10
IIB(BAT)Input bias current on BAT pinV(BAT) = V(REG)1µA
IIB(SNS)Input bias current on SNS pinV(SNS) = 5 V5µA
IIB(TS)Input bias current on TS pinV(TS) = 5 V5µA
IIB(COMP)Input bias current on COMP pinV(COMP) = 5 V5µA
BATTERY VOLTAGE REGULATION
VO(REG)Output voltageBQ2057, See (1)(2)(3)4.0594.104.141V
BQ2057C, See (1)(2)(3)4.1584.204.242
BQ2057T, See (1)(2)(3)8.1198.208.282
BQ2057W, See (1)(2)(3)8.3178.408.484
CURRENT REGULATION
V(SNS)Current regulation thresholdBQ2057 and BQ2057C,
High-side current sensing configuration		95.4105115.5mV
BQ2057T and BQ2057W,
High-side current sensing configuration		103.6125137.5
BQ2057 and BQ2057C,
Low-side current sensing configuration		100110121
BQ2057T and BQ2057W,
Low-side current sensing configuration		108.1130143
CHARGE TERMINATION DETECTION
I(TERM)Charge termination current detect thresholdVoltage at pin SNS, relative to VCC for high-side sensing, and to VSS for low-side sensing,
0°C ≤ TA ≤ 50°C		−30−14−4mV
TEMPERATURE COMPARATOR
V(TS1)Lower temperature thresholdTS pin voltage29.13030.9%VCC
V(TS2)Upper temperature threshold58.36061.8
PRECHARGE COMPARATOR
V(min)Precharge thresholdBQ20572.9433.06V
BQ2057C3.043.13.16
BQ2057T5.96.16.22
BQ2057W6.186.36.43
PRECHARGE CURRENT REGULATION
I(PRECHG)Precharge current regulationVoltage at pin SNS, relative to VCC for high-side sensing, and to VSS for low-side sensing,
0°C ≤ TA ≤ 50°C		13mV
Voltage at pin SNS, relative to VCC for high-side sensing, 0°C ≤ TA ≤ 50°C, VCC = 5 V31322mV
VRCH COMPARATOR (Battery Recharge Threshold)
V(RCH)Recharge thresholdBQ2057 and BQ2057CVO(REG)−
98 mV		VO(REG)−
100 mV		VO(REG)−
102 mV		V
BQ2057T and BQ2057WVO(REG)−
196 mV		VO(REG)−
200 mV		VO(REG)−
204 mV		V
CHARGE-RATE COMPENSATION (AutoComp)
G(COMP)AutoComp gainV(BAT)+0.3 V≤ VCC ≤ VCC(max), BQ2057, BQ2057C, BQ2057T, BQ2057W1.872.22.53V/V
V(BAT)+0.3 V ≤ VCC ≤ VCC(max), BQ2057T and BQ2057W in low-side sensing configuration2.092.42.76
STAT PIN
VOL(STAT)Output (low) voltageIOL = 10 mA0.7V
VOH(STAT)Output (high) voltageIOH = 5 mAVCC–0.5
CC PIN
VOL(CC)Output low voltageIO(CC) = 5 mA (sink)1.5V
IO(CC)Sink currentNot to exceed power rating specification (PD)540mA
(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)