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Part Number: PSC1534
Description: The PSC1534 is a constant-current/constant-voltage Li-Ion battery charger controller that is functiona...
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PSC1534
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DataSheet
General Description
PSC1534 General 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, the PSC1534 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.
PSC1534 Maximum Ratings
| 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 |
PSC1534 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
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
PSC1534 Typical Application
Any application that requires a compact, low-cost solution for Li-Ion battery charging
PSC1534 Connection Diagram
PSC1534
PDF/DataSheet Download
- Datasheet: PSC1534
- File Size: 1417406 KB
- Manufacturer: Agere
- Click here to Download
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