LP2950 Datasheet, PDF (7/10 Pages) National Semiconductor (TI) – Series of Adjustable Micropower Voltage Regulators

CORPORATION
LP2950 / LP2951
TYPICAL APPLICATIONS
4.75V
OUTPUT
VOLTAGE
ERROR*
INPUT
VOLTAGE
5.0V
1.3V
*SEE APPLICATION INFO.
1F-44
FIGURE 1. ERROR OUTPUT TIMING
+V_IN
ERROR
OUTPUT
100K
SHUTDOWN
INPUT
5
ERROR
8
+V_IN
1
V_OUT
LP2951
3
SD
GND
4
FB
7
1.23V
V_REF
1.2 TO 30V
+
R₁
3.3µF
.01 µF
R₂
1F-45
FIGURE 2. ADJUSTABLE REGULATOR
+V_IN
470K Ω
470K Ω
5
ERROR
8
+V_IN
1
V_OUT
LP2951
3
SD
GND
FB
4
7
V_OUT
+
R₁
1µF
R₂
LATCH OFF WHEN ERROR FLAG OCCURS
1F-46
ERROR
OUTPUT
SHUTDOWN
INPUT
+V_IN
5
ERROR
8
+V_IN
1
V_OUT
LP2951
3
SD
GND
FB
4
7
*V_OUT = V_IN
*MINIMUM INPUT - OUTPUT VOLTAGE RANGES FROM 4mV TO 400mV.
DEPENDING ON LOAD CURRENT. CURRENT LIMIT IS TYPICALLY 160mA.
WIDE INPUT VOLTAGE RANGE CURRENT LIMITER
1F-47
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