Datasheet Analog Devices LTC3670EDDB#TRPBF — Datenblatt

LTC3670
Monolithic 400mA Buck
Regulator with Dual 150mA
LDOs in 3mm × 2mm DFN
DESCRIPTION FEATURES n n n n n n n n Triple Output Supply from a Single 2.5V to 5.5V Input
400mA Buck DC/DC Plus Dual 150mA LDOs in One IC
Outputs Regulate Down to 0.8V
±2.5% Reference Accuracy
Constant-Frequency 2.25MHz Operation
Burst Mode® Operation for High Efficiency at Light
Loads; IQ = 70µA, All Outputs Enabled
Independent Enable Pin for Each Output
Current Mode Operation for Excellent Line and Load
Transient Response
Internal Soft-Start for Each Output
Tiny 12-Lead 3mm × 2mm × 0.75mm DFN Package APPLICATIONS n n n Handheld Products
Portable Instruments
Single-Cell Li-Ion/Li-Polymer Powered Devices
DMB/DVB-H Multimedia Cell Phones
Multivoltage Power for Digital Logic, I/O, FPGAs,
CPLDs, ASICs, SoCs, CPUs and RF Chipsets The LTC®3670 is a triple power supply composed of a
400mA synchronous buck regulator and two 150mA low
dropout linear regulators (LDOs). The input supply range …