SC112 Datasheet, PDF (1/5 Pages) Semtech Corporation – 150mA ULTRA LOW DROPOUT MICROPOWER LINEAR REGULATOR

150mA ULTRA LOW DROPOUT
MICROPOWER LINEAR REGULATOR
SC112
PRELIMINARY - July 25, 2000
TEL:[phone] FAX:[phone] WEB:http://www.semtech.com
DESCRIPTION
The SC112 is a 150mA ultra low dropout linear
regulator with a built in CMOS/TTL logic level enable,
designed specifically for battery powered applications
where low quiescent current and low dropout are
critical for battery longevity.
The SC112 uses a Semtech proprietary internal PNP
device for the pass element, providing a low dropout
voltage of 130mV at a load of 60mA.
FEATURES
•= Low dropout voltage
•= CMOS/TTL compatible control switch
•= Very low quiescent current 60µA (ON, no load)
•= Internal thermal shutdown
•= Short circuit protection
•= Very low standby current 0.1µA maximum (OFF)
•= Low noise with external bypass capacitor
•= Industrial temperature range
The output noise is reduced to 30µV (typical) by
placing a very low leakage 10nF capacitor on pin 3
(noise bypass).
Each device contains a bandgap reference, error
amplifier, PNP pass element, thermal and current
limiting circuitry and resistor divider network for setting
output voltage.
The SC112 is packaged in a six lead SOT-23 surface
mount package for a very small footprint and it requires
only a 1µF capacitor on the output and a 0.01µF on the
bypass pin for a minimum number of external
components.
APPLICATIONS
•= Battery powered systems
•= Cellular telephones
•= Cordless telephones
•= Pagers, personal digital assistants
•= Portable instrumentation
•= Low voltage systems
ORDERING INFORMATION
DEVICE⁽¹⁾⁽²⁾
PACKAGE
SC112XXCSK.TR
6 pin SOT-23
TYPICAL APPLICATION CIRCUIT
Notes:
(1) Where XX denotes voltage options. Available volt-
ages are: 2.2V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,
4.0V and 5.0V. Contact factory for additional voltage
options.
(2) Only available in tape and reel packaging. A reel
contains 3000 devices
U1 SC112
EN
1 _EN
VIN ⁶
VIN
2 _{GND GND} 5
3 _{BYP VO} 4
VO
C1
10nF
C2
C3
1uF
1uF
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