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參數資料
| 型號： | MIC5250-3.3BMM |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | MB 8C 8#12 PIN RECP |
| 中文描述： | FIXED POSITIVE LDO REGULATOR, PDSO10 |
| 封裝： | MSOP-10 |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 168K |
| 代理商： | MIC5250-3.3BMM |
MIC5250
Micrel
March 2000
1
MIC5250
General Description
The MIC5250 is an efficient, precise dual CMOS voltage
regulator optimized for ultra-low-noise applications. The
MIC5250 offers better than 1% initial accuracy, extremely low
dropout voltage (typically 150mV at 150mA) and constant
ground current over load (typically 100
μ
A). The MIC5250
provides a very-low-noise output, ideal for RF applications
where quiet voltage sources are required. A noise bypass pin
is also available for further reduction of output noise.
Designed specifically for hand-held and battery-powered
devices, the MIC5250 provides TTL logic compatible enable
pins. When disabled, power consumption drops nearly to
zero.
The MIC5250 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in hand-held wireless devices.
Key features include current limit, thermal shutdown, push-
pull outputs for faster transient response, and active clamps
to speed up device turnoff. Available in the 10-lead MSOP
(micro-shrink-outline package), the MIC5250 also offers a
range of fixed output voltages.
Typical Application
C
(optional)
C
OUTB
INA
ENA
OUTA
BYPA
GNDA
OUTB
BYPB
GNDB
INB
ENB
3.3V
V
INA
V
INB
3.3V
MIC5250-3.3BMM
C
(optional)
C
OUTA
ENABLE
SHUTDOWN
ENABLE
SHUTDOWN
ENA may be connected directly to INA.
ENB may be connected directly to INB.
GNDA and GND B may be connected to
isolated grounds or the same ground.
10
1
3
8
4
6
2
9
7
5
Dual Ultra-Low-Noise Regulator Circuit
MIC5250
Dual 150mA
μ
Cap CMOS LDO Regulator
Preliminary Information
Features
Ultralow dropout—100mV @ 100mA
Ultralow noise—30
μ
V(rms)
Stability with ceramic, tantalum, or aluminum electrolytic
capacitors
Load independent, ultralow ground current
150mA output current
Current limiting
Thermal Shutdown
Tight load and line regulation
“Zero” off-mode current
Fast transient response
TTL-Logic-controlled enable input
Applications
Cellular phones and pagers
Cellular accessories
Battery-powered equipment
Laptop, notebook, and palmtop computers
PCMCIA V
CC
and V
PP
regulation/switching
Consumer/personal electronics
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Ordering Information
Part Number
MIC5250-2.7BMM
MIC5250-2.8BMM
MIC5250-3.0BMM
MIC5250-3.3BMM
Other voltages available. Contact Micrel for details.
Voltage
2.7V
2.8V
3.0V
3.3V
Junction Temp. Range
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
Package
10-lead MSOP
10-lead MSOP
10-lead MSOP
10-lead MSOP
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC5251-2.6BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC5251-2.85BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:RF Micro Devices Inc 功能描述: |
| MIC5251-3.0BM5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MIC5252 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:150MA HIGH PSRR LOW NOISE UCAP CMOS LDO |
| MIC5252_04 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:150mA High PSRR, Low Noise μCap CMOS LDO |
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