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PSC1534

Features: Low external component count and small footprintCharge termination indication and manual shutdown using PROG pinProgrammable charge current: 200 mA to 800 mA4.1 V or 4.2 V preset voltagesAutomatic trickle charging at IPROG/10 for heavily discharged batteries requires no additional extern...

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PSC1534: Features: Low external component count and small footprintCharge termination indication and manual shutdown using PROG pinProgrammable charge current: 200 mA to 800 mA4.1 V or 4.2 V preset voltagesA...

PSC1534 Data Sheet

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Part Number:
PSC1534
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/28

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Product Details

Description



Features:

Low external component count and small footprint
Charge termination indication and manual shutdown using PROG pin
Programmable charge current: 200 mA to 800 mA
4.1 V or 4.2 V preset voltages
Automatic trickle charging at IPROG/10 for heavily discharged batteries requires no additional external components
Very low quiescent battery current during shutdown and standby (charger removed)
Charger undervoltage lockout and battery overvoltage lockout
Overcurrent/overtemperature protection
Low-profile (1 mm) SOT-23 package


Application

Any application that requires a compact, low-cost solution for Li-Ion battery charging


Pinout

Connection Diagram


Specifications

Parameter Value Unit
Supply Voltage (VCC) 0.3 to +6.5 V
Input Voltage (BAT, PROG) 0.3 to (VCC + 0.3) V
Output Voltage (DRIVE) 0.3 to (VCC + 0.3) V
Output Current (ISENSE) 900 mA
Short-circuit Duration (DRIVE) Indefinite -
Junction Temperature 125 °C
Operating Ambient Temperature Range 40 to +85 °C
Operating Junction Temperature 100 °C
Storage Temperature Range 65 to +150 °C
Lead Temperature (soldering, 10 s) 300 °C



Description

The PSC1534 is a constant-current/constant-voltage Li-Ion battery charger controller that is functionally equivalent and performance equivalent to the LTC®1734. As an enhancement, it also includes automatic detection and trickle charging of deeply discharged batteries (VBAT <2.42 V).

The PSC1534 allows charge current programming using a single external resistor, RPROG. The voltage on the PROG pin is proportional to the charging current at the ISENSE pin, allowing the user to use an external A/D to monitor charging progress. A low battery drain (BAT pin) manual shutdown state can be forced by floating the PROG pin. When the input supply (VIN) is removed, the PSC1534 enters a very lowcurrent sleep mode, during which BAT input supply current is <1 µA.




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