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參數資料
| 型號： | SC1457ISK-2.9TRT |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 2.9 V FIXED POSITIVE LDO REGULATOR, 0.23 V DROPOUT, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數： | 1/13頁 |
| 文件大小： | 232K |
| 代理商： | SC1457ISK-2.9TRT |
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www.semtech.com
SC1457
150mA Ultra Low Dropout
Regulator with Undervoltage Flag
POWER MANAGEMENT
Revision: November 10, 2004
The SC1457 is a low dropout linear regulator that
operates from a +2.25V to +6.5V input range and
delivers up to 150mA. A PMOS pass transistor allows
the low 75A supply current to remain independent of
load, making these devices ideal for battery operated
portable equipment such as cellular phones, cordless
phones and personal digital assistants.
The SC1457 has very low dropout voltage (typically 1.1mV
at light loads and 150mV at 150mA) with better than
1.5% initial output voltage accuracy. It has a logic
compatible enable control input and an internal output
undervoltage monitor.
Designed especially for hand held, battery powered
devices, the SC1457 can be switched by a CMOS or TTL
compatible logic signal. When disabled, power
consumption drops nearly to zero. Other features include
short circuit protection, thermal shutdown protection and
reverse battery protection.
The SC1457 is available in several fixed voltages in the
tiny 5 lead SOT-23 package and the ultra low profile 5
lead TSOT-23.
Guaranteed 150mA output current
Error flag indicates output undervoltage fault
2% output accuracy guaranteed over line, load and
temperature
Very small external components - designed to work
with ceramic capacitors
Low 110V
RMS output noise
Very low supply current
Thermal overload protection
Reverse battery protection
Low power shutdown
Full industrial temperature range
Very low profile packaging available (1mm max.
height)
Surface mount packaging (SOT-23-5 and
TSOT-23-5)
VIN
VO
UNDERVOLTAGE FLAG
C2
1uF
C1
1uF
U1
SC1457
1
2
3
4
5
IN
GND
EN
FLG
OUT
R1 100k
Description
Features
Applications
Battery Powered Systems
Cellular Telephones
Cordless Telephones
Personal Digital Assistants
Portable Instrumentation
Modems
PCMCIA cards
Typical Application Circuit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SC1457ISK-X.XTR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:150mA Ultra Low Dropout Regulator with Undervoltage Flag |
| SC1457ISKX.XTRT | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:150mA Ultra Low Dropout Regulator with Undervoltage Flag |
| SC1457ITSK-XXTR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:150mA Ultra Low Dropout Regulator with Undervoltage Flag |
| SC1457ITSKXXTRT | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:150mA Ultra Low Dropout Regulator with Undervoltage Flag |
| SC1458 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Dual Output Low Noise LDO Linear Regulator |
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