Datasheet Analog Devices LTC3548EKD-1#TRPBF — 数据表

LTC3548-1
Dual Synchronous, Fixed
Output 2.25MHz Step-Down
DC/DC Regulator
DESCRIPTION FEATURES High Efficiency: Up to 95%
1.8V at 800mA/1.575V at 400mA
Very Low Quiescent Current: Only 40μA
2.25MHz Constant-Frequency Operation
High Switch Current: 1.2A and 0.7A
No Schottky Diodes Required
VIN: 2.5V to 5.5V
Current Mode Operation for Excellent Line
and Load Transient Response
Short-Circuit Protected
Low Dropout Operation: 100% Duty Cycle
Ultralow Shutdown Current: IQ < 1μA
Small Thermally Enhanced 3mm × 3mm
DFN Packages The LTC®3548-1 is a dual, fixed output, constant-frequency,
synchronous step-down DC/DC converter. Intended for low
power applications, it operates from 2.5V to 5.5V input
voltage range and has a constant 2.25MHz switching
frequency, allowing the use of tiny, low cost capacitors
and inductors with a profile ≤1mm. The output voltage …