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參數(shù)資料
| 型號： | IC5205BM5 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | 150mA Low-Noise LDO Regulator |
| 中文描述： | 150mA低噪聲LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 99K |
| 代理商： | IC5205BM5 |
MIC5205
Micrel
June 2000
1
MIC5205
General Description
The MIC5205 is an efficient linear voltage regulator with ultra-
low-noise output, very low dropout voltage (typically 17mV at
light loads and 165mV at 150mA), and very low ground
current (600
μ
A at 100mA output). The MIC5205 offers better
than 1% initial accuracy.
Designed especially for hand-held, battery-powered devices,
the MIC5205 includes a CMOS or TTL compatible enable/
shutdown control input. When shutdown, power consump-
tion drops nearly to zero. Regulator ground current increases
only slightly in dropout, further prolonging battery life.
Key MIC5205 features include a reference bypass pin to
improve its already excellent low-noise performance, re-
versed-battery protection, current limiting, and
overtemperature shutdown.
The MIC5205 is available in fixed and adjustable output
voltage versions in a small SOT-23-5 package.
For low-dropout regulators that are stable with ceramic
output capacitors, see the
μ
Cap MIC5245/6/7 family.
Ordering Information
Part Number
MIC5205BM5
MIC5205-2.5BM5
MIC5205-2.7BM5
MIC5205-2.8BM5
MIC5205-2.85BM5
MIC5205-2.9BM5
MIC5205-3.0BM5
MIC5205-3.3BM5
MIC5205-3.6BM5
MIC5205-3.8BM5
MIC5205-4.0BM5
MIC5205-5.0BM5
Other voltages available. Contact Micrel for details.
Marking
LBAA
LB25
LB27
LB28
LB2J
LB29
LB30
LB33
LB36
LB38
LB40
LB50
Voltage
Adj
2.5V
2.7V
2.8V
2.85V
2.9V
3.0V
3.3V
3.6V
3.8V
4.0V
5.0V
Accuracy
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
Junction Temp. Range*
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
–40
°
C to +125
°
C
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Typical Application
1
5
2
3
4
C
OUT
= 2.2μF
tantalum
C
BYP
Enable
Shutdown
EN
V
OUT
Low-Noise Operation:
C
BYP
= 470pF, C
OUT
≥
2.2μF
Basic Operation:
C
BYP
= not used, C
OUT
≥
1μF
MIC5205-x.xBM5
EN (pin 3) may be
connected directly
to IN (pin 1).
V
IN
Ultra-Low-Noise Regulator Application
MIC5205
150mA Low-Noise LDO Regulator
Features
Ultra-low-noise output
High output voltage accuracy
Guaranteed 150mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Reverse-battery protection
“
Zero
”
off-mode current
Logic-controlled electronic enable
Applications
Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
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
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