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TPS61251
SLVSAF7C – SEPTEMBER 201...
Product Folder
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Technical Documents
Tools & Software
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TPS61251
SLVSAF7C – SEPTEMBER 2010 – REVISED APRIL 2019
TPS61251 Boost Converter for Battery Backup Charging With Adjustable Constant Current and Snooze Mode
1 Features
1 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 VIN range from 2.3 V to 6 V Adjustable output
voltage up to 6.5 V 100% Duty-cycle mode when VIN > VOUT 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
2 Applications
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
3 Description
The TPS61251 device provides a power supply solution for products powered by either a three-cell, NiCd or NiMH battery, or a one-cell Li-Ion or Lipolymer battery. The wide input
voltage range is ideal to power portable applications like mobile phones, solid state drives (SSD) and wireless modems. The converter is d...