Datasheet Texas Instruments LM2772SD/NOPB — 数据表

LM2772
www.ti.com SNVS486B – DECEMBER 2006 – REVISED MAY 2013 LM2772 Low-Ripple Switched Capacitor Step-Down Regulator
Check for Samples: LM2772 FEATURES DESCRIPTION The LM2772 is a switched capacitor step-down
regulator that produces a 1.2V output. It is capable of
supplying loads up to 150mA with 3% output voltage
regulation over line, load, and temperature. The
LM2772 operates with an input voltage from 3.0V to
5.5V, accommodating 1-cell Li-Ion batteries and
chargers. 1 2 Low-Noise Fixed Frequency Operation
1.2V Output Voltage
3% Output Voltage Regulation
Li-Ion (3.6V) to 1.2V with 80% Efficiency
Very Low Output Ripple: 8mV @ 150mA
Output Currents up to 150mA
2.7V to 5.5V Input Voltage Range
Shutdown Disconnects Load from VIN
1.1MHz Switching Frequency
No Inductors…Small Solution Size
Short Circuit and Thermal Protection
WSON-10 Package (3mm Г— 3mm Г— 0.8mm) APPLICATIONS The LM2772 utilizes a highly efficient regulated multigain charge pump. Pre-regulated 1.1MHz fixedfrequency switching results in very low ripple and
noise on both the input and the output. When output
currents are low, the part automatically switches to a
low-ripple PFM regulation mode to maintain high …