© 2017 Semtech Corporation

HIGH-RELIABILITY PRODUCTS

1

SC4212LM

High PSRR, Very Low Input, Very

Low Dropout, 1A Linear Regulator

Features

Input Voltage Range from 1.6V to 6.0V

Adjustable Output from 0.5V with ± 1% Accuracy

High PSRR (76dB Typical at 1.8Vin to 0.5Vo, 1A)

Noise Bypass Pin

Programmable Soft-Start

12µA Quiescent Current in Shutdown

Enable Input

Power Good Indicator

Over Current and Over Temperature Protection

Reverse Blocking from Output to Input

3mm x 3mm x 1mm MLPD-8 Package

Fully WEEE and RoHS Compliant

Applications

Noise-sensitive rails

FPGA power

Embedded systems

Avionics

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Description

The SC4212LM is a high performance linear regulator

designed for applications requiring very low dropout

voltage at load currents up to 1 Ampere. It operates with

VIN as low as 1.6V and up to 6V, making it useful for a wide

range of different applications and rails. The output

voltage is programmable down to 0.5V, set via an external

resistor divider, or to a fixed setting of 0.5V depending

upon how the FB pin is configured.

The SC4212LM has an enable pin to further reduce power

dissipation while shut down. This device also offers an

active-high power good for the system to check the

output voltage. An external soft start capacitor can be

connected to the SS pin to program the profile of the

startup. Additionally, the device provides protection fea-

tures such as over current protection, over temperature

protection and reverse blocking from output to input. A

capacitor at the BYP pin can bypass the noise generated in

the internal bandgap reference in order to improve the

PSRR and the noise at the output. The SC4212LM is avail-

able in a 3mm x 3mm MLPD-8 package.

Typical Application Circuit

Rev. 2.0

SC4212LM

EN

VIN

FB

VO

BYP

EN

VIN

VO

VO=0.5V

SS

PG

GND

PG

SC4212LM

EN

VIN

FB

VO

BYP

EN

VIN

VO

SS

PG

GND

PG

VO =

* C