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LP2951 数据表(PDF) 2 Page - Microchip Technology

部件名 LP2951
功能描述  100 mA Low-Dropout Voltage Regulator
PDF  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

LP2951 数据表(HTML) 2 Page - Microchip Technology

  LP2951 Datasheet HTML 1Page - Microchip Technology LP2951 Datasheet HTML 2Page - Microchip Technology LP2951 Datasheet HTML 3Page - Microchip Technology LP2951 Datasheet HTML 4Page - Microchip Technology LP2951 Datasheet HTML 5Page - Microchip Technology LP2951 Datasheet HTML 6Page - Microchip Technology LP2951 Datasheet HTML 7Page - Microchip Technology LP2951 Datasheet HTML 8Page - Microchip Technology LP2951 Datasheet HTML 9Page - Microchip Technology Next Button
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background image
LP2951
DS20005736B-page 2
2017 - 2022 Microchip Technology Inc. and its subsidiaries
Functional Block Diagram
Typical Application Diagrams
5V TAP
6
SENSE
2
GROUND
4
ERROR
5
TO CMOS
OR TTL
330
kΩ
+
1.5 μF
60
kΩ
182
kΩ
OUTPUT
INPUT
FEEDBACK
1
8
7
5V
150 mA
MAX.
+
–
+
–
ERROR
AMPLIFIER
ERROR
DETECTION
COMPARATOR
+
1.23 V
REF.
+
60 mV
SHUT-
DOWN
3
FROM
CMOS
OR TTL
+
UNREGULATED DC
LP2951
FB
SO
ERROR
5
1
3
7
GND
4
8
*V
OUT ≈VIN
V
OUT
ERROR
OUTPUT
SHUTDOWN
INPUT
*MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 40 mV TO 400 mV,
DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 160 mA.
+V
IN
+V
IN
*HIGH INPUT LOWERS V
OUT TO 2.5V
MIC2951
SD
V
ERROR
GND
4
7
8
OUT
+V IN
FB
1
5
3
ERROR
OUTPUT
SHUTDOWN
INPUT
47kΩ
*SLEEP
INPUT
100pF
2N3906
200kΩ
1%
100kΩ
C-MOS
GATE
+V IN
1%
100kΩ
+
3.3μF
+V OUT
470 kΩ
OFF
ON
LP2951
LP2951
FB
SD
1
3
7
GND
4
VIN
8
OUT
V
SHUTDOWN
INPUT
LOAD
+V = 2
30V
ILIL=
1.23
R
0.1μF
1μF
1%
R
WIDE INPUT VOLTAGE RANGE
CURRENT LIMITER
5V REGULATOR WITH 2.5V
SLEEP FUNCTION
LOW DRIFT CURRENT SOURCE



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