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...
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...
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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 |
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.