MIC5254
Micrel
MIC5254
Dual 150mA
碌
Cap LDO with Error Flag Outputs
General Description
The MIC5254 is an efficient, precise, dual CMOS voltage
regulator. It offers better than 1% initial accuracy, extremely
low dropout voltage (typically 135mV at 150mA) and low
ground current (typically 90碌A(chǔ)) over load. The MIC5254
features two independent LDOs with error flags that indicate
an output fault condition such as overcurrent, thermal shut-
down and dropout.
Designed specifically for handheld and battery-powered de-
vices, the MIC5254 provides a TTL-logic-compatible enable
pin. When disabled, power consumption drops nearly to zero.
The MIC5254 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in handheld wireless devices.
Key features include current limit, thermal shutdown, faster
transient response, and an active clamp to speed up device
turnoff. The MIC5254 is available in the MSOP-10 package
and is rated over a 鈥?0擄C to +125擄C junction temperature
range.
Features
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Input voltage range: 2.7V to 6.0V
Dual, independent 150mA LDOs
Error flags indicate fault condition
Stable with ceramic output capacitor
Ultra-low dropout: 135mV @ 150mA
High output accuracy:
1.0% initial accuracy
2.0% over temperature
Low quiescent current: 90碌A(chǔ) each LDO
Tight load and line regulation
Thermal shutdown and current limit protection
鈥淶ero鈥?off-mode current
TTL logic-controlled enable input
MSOP-10 package
Cellular phones and pagers
Cellular accessories
Battery-powered equipment
Laptop, notebook, and palmtop computers
Consumer/personal electronics
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Applications
Ordering Information
Part Number
MIC5254-SJBMM
VOUTA
3.3V
VOUTB
2.5V
Junction Temp. Range
鈥?0擄C to +125擄C
Package
MSOP-10
Other voltages available. Contact Micrel Marketing for details.
Typical Application
V
INA
1
m
F
9
MIC5254
VINA OUTA
ENA
FLGA
10
V
OUTA
47k
W
FLAGA
1
m
F
Ceramic
V
OUTB
1
m
F
Ceramic
2
1
3
GNDA OUTB
VINB FLGB
ENB GNDB
8
4
7
V
INB
1
m
F
6
5
47k
W
FLAGB
Dual Output LDO with Error Flags
Micrel, Inc. 鈥?1849 Fortune Drive 鈥?San Jose, CA 95131 鈥?USA 鈥?tel + 1 (408) 944-0800 鈥?fax + 1 (408) 944-0970 鈥?http://www.micrel.com
September 2003
1
MIC5254
MIC5254 PDF文件相關(guān)型號(hào)
MIC5254-SJBMM
MIC5254相關(guān)型號(hào)PDF文件下載
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