Datasheet

7
LT1431
1413fc
PNP Low Dropout 5V Regulator*
0.015µF
150Ω
LT1431 • TA07
COLL
REF
LT1431
GND-F
COMP
GND-S
V
+
R
MID
R
TOP
21
56
8
7
20Ω**
2W
47Ω
1k
5V
330µF
0.1µF
V
IN
3
4
MEASURED DROPOUT VOLTAGE
420mV AT 4A
190mV AT 2A
95mV AT 1A
60mV AT 0.5A
*NO SHORT-CIRCUIT PROTECTION
**MAY BE INCREASED AT LOWER WATTAGE
FOR LOWER OUTPUT CURRENTS
+
MJE2955
2N2219
1.5k
LT1431 • TA08
8
7
3
4
56
1
COLL
REF
LT1431
GND-FGND-S
V
+
R
MID
R
TOP
1N4148
7
6
LT1006
23
–
+
4
5
0.002Ω*
47µF
MTP50N05EL
MTM25N05L
DS
G
V
IN
≥ 5.2V
47µF
5V, 2.5A
12V
I
LOAD
2A
1A
0.5A
MTP50N05EL
47mV
22mV
11.5mV
MTM25N05L
145mV
73mV
37mV
*1.5" #23 SOLID COPPER WIRE
~0.002Ω → 3A LIMIT
Measured Dropout Voltages
+ +
LT1006
FET Low Dropout 5V Regulator with Current Limit
TYPICAL APPLICATIO S
U