LTC1517-5 LINER [Linear Technology], LTC1517-5 Datasheet - Page 6

• Manufacturer Part Number: LTC1517-5
• Description: Micropower, Regulated 5V Charge Pump in a 5-Pin SOT-23 Package
• Manufacturer: LINER [Linear Technology]

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