LT3085 LINER [Linear Technology], LT3085 Datasheet - Page 20

• Manufacturer Part Number: LT3085
• Description: Adjustable 500mA Single Resistor Low Dropout Regulator
• Manufacturer: LINER [Linear Technology]

LT3085
TYPICAL APPLICATIONS
20
ON OFF
SHUTDOWN
V
IN
V
CONTROL
Q1
VN2222LL
IN
Adding Shutdown
*
Q2 INSURES ZERO OUTPUT
IN THE ABSENCE OF ANY
OUTPUT LOAD.
12V
V
IN
SET
R1
LT3085
+
–
V
CONTROL
C1
1μF
IN
3085 TA04
SET
R1
49.9k
1%
OUT
R
10k
Using a Lower Value SET Resistor
SET
LT3085
Q2*
VN2222LL
+
–
V
OUT
1mA
OUT
R2
499Ω
1%
3085 TA06
C
4.7μF
V
0.5V TO 10V
OUT
OUT
C1
Low Dropout Voltage LED Driver
V
V
SET
OUT
R1
24.9k
CONTROL
LT3085
= 0.5V + 1mA • R
+
–
SET
OUT
IN
D1
R2
2.49Ω
3085 TA05
100mA
V
IN
3085fa