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PDF SC5205 Data sheet ( Hoja de datos )
| Número de pieza | SC5205 | |
| Descripción | 150mA Ultra Low Dropout/ Low Noise Micropower Linear Regulator | |
| Fabricantes | Semtech Corporation | |
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SC5205
150mA Ultra Low Dropout, Low
Noise Micropower Linear Regulator
POWER MANAGEMENT
Description
Features
PRELIMINARY
The SC5205 is a 150mA ultra low dropout linear
regulator with a built in CMOS/TTL logic level enable
switch. It is designed specifically for battery powered
applications where low quiescent current and low
dropout are critical for battery longevity.
The SC5205 uses a Semtech proprietary internal PNP
device for the pass element, providing a low dropout
voltage of 165mV at a load of 150mA, while maintaining
a ground pin current of 2750µA.
u Ultra low dropout voltage - 165mV @ 150mA
u Guaranteed 150mA output current
u Low ground pin current at all loads
u <5µA quiescent current in shutdown
u Wide input supply voltage range 2.5V to 16V in
u Wide output voltage range
u Excellent line regulation
u Industrial temperature range
u Surface mount packaging (5 pin SOT-23)
The output noise is reduced by placing a 10nF capacitor
on pin 4 (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 SC5205 is packaged in a 5 pin 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 amount of external components.
Applications
u Battery Powered Systems
u Cellular Telephones
u Cordless Telephones
u Pagers
u Personal Digital Assistants
u Portable Instrumentation
u Cameras
u Portable Consumer Equipment
u PCMCIA cards
Typical Application Circuit
VIN
EN
+ C1
1uF
U1 SC5205
1 VIN
VO 5
2 GND
3 EN
BYP 4
VO
C2
10nF
+ C3
1uF
Notes:
(1) CIN (C1) is needed if the device is far from the supplys filter capacitors, or for operation from a battery. A value
of 1.0µF or greater should be used. CIN may be tantalum or aluminum electrolytic.
(2) CO (C3) should be a 1µF or greater tantalum or aluminum electrolytic capacitor. Larger value capacitors will
improve the overall transient response.
(3) CBYP (C2 - required) should be placed as close as possible to pin 4 and ground. A 10nF ceramic capacitor is
recommended.
(4) EN may be tied to VIN if the shutdown feature is not required. Maximum EN voltage = VIN.
Revision 1, January 2001
1
www.semtech.com
1 page  
POWER MANAGEMENT
Outline Drawing - SOT-23-5
SC5205
PRELIMINARY
Land Pattern - SOT-23-5
Contact Information
Semtech Corporation
Power Management Products Division
652 Mitchell Rd., Newbury Park, CA 91320
Phone: (805)498-2111 FAX (805)498-3804
ã 2001 Semtech Corp.
5
www.semtech.com
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet SC5205.PDF ] | |
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