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).

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

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