Datasheet

LTC6655
18
6655fa
Typical applicaTions
LTC6655-2.5
GND
SHDN
V
IN
V
OUT_S
V
OUT_F
V
OUT
C1
0.1µF
R1
BZX84C12
4V TO 30V
C2
10µF
6655 TA02
Extended Supply Range Reference
Extended Supply Range Reference
LTC6655-2.5
GND
V
IN
SHDN
V
OUT_S
V
OUT_F
V
OUT
6V TO 80V
ON SEMI
MMBT5551
C1
0.1µF
R1
100k
R2
4.7k
BZX84C12
C2
10µF
0.1µF
6655 TA03
Boosted Output Current
LTC6655-2.5
GND
V
IN
SHDN
V
OUT_S
V
OUT
+ 1.8V TO 13.2V
V
OUT_F
V
OUT
C1
1µF
C3
0.1µF
R1
220Ω
C2
10µF
6655 TA04
2N2905
35mA MAX
R2
1k
C4
1µF
Q1
2N2222
I
MAX
SET BY NPN
V
OUT
6655 TA05
LTC6655-2.5
GND
SHDN
V
IN
V
OUT_S
V
OUT_F
C2
4.7µF
C1
0.1µF
4V TO 13.2V
Boosted Output Current
Output Voltage Boost
LTC6655-2.5
GND
SHDN
V
IN
V
OUT_S
R
R = 0k to 1k
V
OUT_F
V
OUT
2.5V TO 4.5V
C1
1µF
V
IN
V
OUT
+ 0.5V TO 13.2V
C2
10µF
6655 TA07
V
OUT
= VOLTAGE OPTION + 0.002 • R
THIS EXAMPLE USES 2.5V AS THE
VOLTAGE OPTION
FOR R USE A POTENTIOMETER THAT
CAN HANDLE 2mA, IS LOW NOISE AND
HAS A LOW TEMPERATURE COEFFICIENT
Low Noise Precision Voltage Boost Circuit
LTC6655-2.5
LT1677
GND
SHDN
V
IN
V
OUT_S
V
OUT_F
V
OUT
5V
C1
1µF
V
IN
V
OUT
+ 0.5V TO 13.2V
C2
10µF
R1
10k
R3
5k
V
IN
6655 TA08
V
OUT
= VOLTAGE OPTION • (1 + R1/R2)
THIS EXAMPLE USES 2.5V AS THE
VOLTAGE OPTION
FOR R1 AND R2 USE VISHAY TRIMMED
RESISTOR ARRAY (VSR144 OR MPM).
WITH A PRECISION ARRAY THE
MATCHING AND LOW TC WILL HELP
PRESERVE LOW DRIFT. R3 = R1||R2
+
–
R
LOAD
R2
10k
+
–