SC112 Semtech Corporation, SC112 Datasheet

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SC112

Manufacturer Part Number
SC112
Description
150mA ULTRA LOW DROPOUT MICROPOWER LINEAR REGULATOR
Manufacturer
Semtech Corporation
Datasheet

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PRELIMINARY - July 25, 2000
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.
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.
TYPICAL APPLICATION CIRCUIT
© 2000 SEMTECH CORP.
EN
C1
10nF
150mA ULTRA LOW DROPOUT
MICROPOWER LINEAR REGULATOR
1
2
3
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
U1 SC112
EN
GND
BYP
GND
VIN
VO
6
5
4
FEATURES
APPLICATIONS
ORDERING INFORMATION
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
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652 MITCHELL ROAD NEWBURY PARK CA 91320
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
Battery powered systems
Cellular telephones
Cordless telephones
Pagers, personal digital assistants
Portable instrumentation
Low voltage systems
SC112XXCSK.TR
DEVICE
C2
1uF
(1)(2)
C3
1uF
VIN
VO
6 pin SOT-23
PACKAGE
SC112
1

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SC112 Summary of contents

Page 1

... 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 ...

Page 2

... I = 1mA 1mA to 60mA (LOAD 1mA to 100mA 1mA to 150mA 10mA VO 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC112 Maximum Units -0.3 to +16 V -0.3 to VIN V Internally Limited W 230 °C/W -40 to +85 °C -40 to +125 °C -55 to +150 °C 300 °C ...

Page 3

... BYP Noise Bypass Terminal Voltage EN Enable Input Threshold Voltage Enable Input Bias Current NOTE: (1) As the load resistance further decreases, the SC112 folds back the output current to approximately 100mA 0V. © 2000 SEMTECH CORP. 150mA ULTRA LOW DROPOUT MICROPOWER LINEAR REGULATOR + 1V 1µ ...

Page 4

... BYP and ground. A 10nF ceramic capacitor is recommended. (4) EN may be tied the shutdown feature is not required. Maxi- IN mum EN voltage = (5) Connect both ground pins (2 and 5) to ground to maximize heat conduction. 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC112 and 1 4 ...

Page 5

... PRELIMINARY - July 25, 2000 DEVICE OUTLINE - SOT23-6L MINIMUM LAND PATTERN - SOT23-6L ECN00-1203 © 2000 SEMTECH CORP. 150mA ULTRA LOW DROPOUT MICROPOWER LINEAR REGULATOR 652 MITCHELL ROAD NEWBURY PARK CA 91320 SC112 5 ...

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