SC4437 Datasheet, PDF (1/12 Pages) Semtech Corporation – Wide Input Voltage Range Precision Voltage Reference

POWER MANAGEMENT
Features
V_IN Voltage Range: V_OUT + 0.9V to 28V
V_OUT: Fixed 3.3V
V_OUT High Accuracy ( ±1% ) over -40°C to 125°C
V_OUT Low Temperature Coe cient
Output Current up to 20mA
Low (< 160µA) Quiescent Current
Stable without Compensation Capacitor
Available with Compact, Surface Mount SOT-23
Package
Pb-Free, Halogen Free, RoHS/WEEE compliant
product
Applications
Bias Supplies
High Accuracy Micropower Supplies
Data Acquisition Systems
Medical Devices
Portable Battery Powered Equipment
Test Equipment
Automotive and Industrial
SC4437
Wide Input Voltage Range
Precision Voltage Reference
Description
The SC4437 is a low power precision series bandgap
reference device. It accepts wide input voltage range V_OUT
+ 0.9V to 28V and generates stable output voltage with
superior accuracy and low drift over operating
temperatures. The SC4437 is ideal for battery powered
systems where there can be wide variations in supply
voltage and a need to minimize power dissipation.
The SC4437 is able to supply up to 20mA output current
with excellent line and load regulation characteristics.
The output compensation capacitor is optional. It
provides user the exibility of compact, low cost design
or further noise performance enhanced design.
The SC4437 is available in a compact 3-lead surface
mount SOT-23 package.
Typical Application Circuit
V_IN up to 28V
IN
C_IN
0.1 µF
SC4437
OUT
GND
3.3V
C_O
(optional)
September 21, 2009
1
www.semtech.com