TPS61251 Boost Converter for Battery Backup Charging With Adjustable Constant Current and Snooze Mode

1 Features

Resistor Programmable Input Current Limit
- ±10% Current accuracy at 500 mA over full temperature range
- Programmable from 100 mA up to 1500 mA
Snooze mode draws only 2 μA (typical) quiescent current
Designed to charge large capacitor values in the Farad range
Up to 92% Efficiency
Power good indicates appropriate output voltage level even in shutdown
V_IN range from 2.3 V to 6 V
Adjustable output voltage up to 6.5 V
100% Duty-cycle mode when V_IN > V_OUT
Load disconnect and reverse current protection
Short-circuit protection
Typical operating frequency 3.5 MHz
Available in a 2 × 2-mm WSON-8 package
Create a custom design using the TPS61251 with the WEBENCH® Power Designer

Current limited applications with high peak power loads (SSD, PCMCIA Tx bursts, memory, GPRS/GSM Tx)
Li-Ion applications
Battery backup applications
Audio applications
RF-PA buffer