SLUSF68 july   2023 BQ25173-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Device Power Up from Input Source
        1. 7.3.1.1 ISET Pin Detection
      2. 7.3.2 Supercapacitor Regulation Voltage
      3. 7.3.3 Supercapacitor Charging Profile
      4. 7.3.4 Status Outputs (PG, STAT)
        1. 7.3.4.1 Power Good Indicator (PG Pin)
        2. 7.3.4.2 Charging Status Indicator (STAT)
      5. 7.3.5 Protection Features
        1. 7.3.5.1 Input Overvoltage Protection (VIN OVP)
        2. 7.3.5.2 Output Overcurrent Protection (OUT OCP)
        3. 7.3.5.3 Thermal Regulation and Thermal Shutdown (TREG and TSHUT)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown or Undervoltage Lockout (UVLO)
      2. 7.4.2 Sleep Mode
      3. 7.4.3 Active Mode
        1. 7.4.3.1 Standby Mode
      4. 7.4.4 Fault Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 1s Supercapacitor Charger Design Example
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 4s Supercapacitor Charger Design Example
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Application Curves
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  12. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

3.0V < VIN < 18V and VIN > VOUT + VSLEEP, TJ = -40°C to +125°C, and TJ = 25°C for typical values (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
QUIESCENT CURRENTS
IQ_OUTQuiescent output current (OUT)OUT= 4.2V, IN floating or IN = 0V - 5V, Charge Disabled (CE high), TJ = 25 °C0.350

0.6

µA
OUT= 4.2V, IN floating or IN = 0V - 5V, Charge Disabled (CE high), TJ < 105 °C0.350

0.8

µA
IQ_OUTQuiescent output current (OUT)OUT = 8.4V, IN floating or IN = 0V - 14V, Charge Disabled (CE high), TJ = 25 °C0.8

1.2

µA
OUT = 8.4V, IN floating or IN = 0V - 14V, Charge Disabled (CE high), TJ < 105 °C0.8

1.5

µA
ISD_INShutdown input current (IN) with charge disabledIN = 5V, Charge Disabled (CE high), no capacitor2

4

µA
IN = 14V, Charge Disabled (CE high), no capacitor3.5

6

µA
IQ_INQuiescent input current (IN)IN = 5V, OUT = 3.8V, Charge Enabled (CE low), ICHG = 0A0.45

0.6

mA
IQ_INQuiescent input current (IN)IN = 14V, OUT = 7.6V, Charge Enabled (CE low), ICHG = 0A0.45

0.6

mA
INPUT
VIN_OPIN operating range3.018V
VIN_LOWVIN voltage to start chargingIN rising

3.05

3.09

3.15

V
VIN_LOWVIN voltage to stop chargingIN falling

2.80

2.95

3.10

V
VSLEEPZExit sleep mode thresholdIN rising, VIN - VOUT, OUT = 4V

95

135

175

mV
VSLEEPEnter sleep mode thresholdIN falling, VIN - VOUT, OUT = 4V80mV
VIN_OVVIN overvoltage rising thresholdIN rising

18.1

18.4

18.7

V
VIN_OVZVIN overvoltage falling thresholdIN falling18.2V
CONFIGURATION PINS SHORT/OPEN PROTECTION
RISET_SHORTHighest resistor value considered shortRISET below this at startup, charger does not initiate charge, power cycle or CE toggle to reset350Ω
CHARGER
VFB_REFFeedback reference voltage0.8V
VFB_REF_ACCFeedback reference voltage accuracyTj = -40℃ to 125℃

-1

1

%
ICHG_RANGETypical charge current regulation rangeVOUT > VBAT_LOWV10800mA
KISETCharge current setting factor, ICHG = KISET / RISET10mA < ICHG < 800mA

270

300

330

AΩ
ICHG_ACCCharge current accuracyRISET = 375Ω, OUT = 3.8V or 7.6V

720

800

880

mA
RISET = 600Ω, OUT = 3.8V or 7.6V

450

500

550

mA
RISET = 3.0kΩ, OUT = 3.8V or 7.6V

90

100

110

mA
RISET = 30kΩ, OUT = 3.8V or 7.6V

9

10

11

mA
VCHGSupercapacitor charged thresholdOUT rising, as percentage of FB regulation target98%
RONCharging path FET on-resistanceIOUT = 400mA, TJ = 25°C845

1000

mΩ
IOUT = 400mA, TJ = -40 - 125°C845

1450

mΩ
CHARGER PROTECTION
IOUT_OCPOutput current limit thresholdIOUT rising

0.9

1

1.1

A
TEMPERATURE REGULATION AND TEMPERATURE SHUTDOWN
TREGTypical junction temperature regulation125°C
TSHUTThermal shutdown rising thresholdTemperature increasing150°C
Thermal shutdown falling thresholdTemperature decreasing135°C
LOGIC INPUT PIN (/CE)
VIHInput high threshold level1.3V
VILInput low threshold level0.4V
RPD_CECE pin internal pulldown resistor3.3MΩ
LOGIC OUTPUT PIN (STAT, PG)
VOLOutput low threshold levelSink current = 5mA0.4V
IOUT_BIASHigh-level leakage currentPull up rail 3.3V1µA