Datasheet

6
LTC1517-5
TYPICAL APPLICATIONS
U
1µF
1517 TA04a
123
4
5
0.1µF
3.3µF
1µF1µF1µF
470Ω
470Ω
V
OUT
= 5V
I
OUT
= 1mA (V
IN
≥ 3.3V)
I
OUT
= 10mA (V
IN
≥ 3.6V)
V
RIPPLE
< 2mV
P-P
V
IN
3.3V TO 5V
V
IN
GND
LTC1517-5
V
OUT
C1
+
C1
–
Q2
Q1, Q2: 2N3904
Q1
A
B
50mV/DIV
AC COUPLED
V
OUT
2mV/DIV
AC COUPLED
50µs/DIV
V
IN
= 3.3V
I
OUT
= 1mA
1517-5 TA04b
Low Noise Boosted 5V Supply
Generating 5V and a Negative Supply
3.3µF
1517 TA05
123
4
5
0.1µF
0.1µF
*
**
3.3k
V
OUT
= 5V ±4%
I
OUT
= 10mA (2.7V ≤ V
IN
≤ 5V)
I
OUT
= 20mA (3V ≤ V
IN
≤ 5V)
–V
OUT
= –1.4V TO –3.5V
–I
OUT
= 0mA to 5mA
V
IN
2.7V TO 5V
V
IN
GND
LTC1517-5
V
OUT
C1
+
C1
–
8.2k470Ω
3.3µF
CENTRAL SEMICONDUCTOR CMPSH-35 DUAL SCHOTTKY
OPTIONAL CIRCUITRY FOR MAINTAINING –V
OUT
WITH LOW
V
OUT
LOADS
Q1, Q2: 2N3904
*
**
3.3µF
Q2Q1
A
B