LM2773
www.ti.com SNVS554A – JANUARY 2008 – REVISED MAY 2013 LM2773 Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator
Check for Samples: LM2773 FEATURES DESCRIPTION The LM2773 is a switched capacitor step-down
regulator that produces a selectable 1.8V or 1.6V
output. It is capable of supplying loads up to 300mA.
The LM2773 operates with an input voltage from 2.5V
to 5.5V, accommodating 1-cell Li-Ion batteries and
chargers. 1 2 Low-Noise Spread Spectrum Operation
1.8V/1.6V Selectable Output Voltage
2% Output Voltage Regulation
> 75% Efficiency in 1.8V Mode
Very Low Output Ripple: 10mV @ 300mA
Output Currents up to 300mA
2.5V to 5.5V Input Voltage Range
Shutdown Disconnects Load from VIN
1.15MHz Switching Frequency
No Inductors…Small Solution Size
Short Circuit and Thermal Protection
0.5mm pitch, DSBGA-9 (1.511 Г— 1.511mm Г—
0.6mm) The LM2773 utilizes a regulated charge pump with
gains of 2/3x and 1x. It has very low ripple and noise
on both the input and output due to its pre-regulated
1.15MHz (typ.) switching frequency and spread …
