TPS61251

Product Folder Order Now Technical Documents Tools & Software Support & Community 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...