LTC1751-5 LINER [Linear Technology], LTC1751-5 Datasheet - Page 4

• Manufacturer Part Number: LTC1751-5
• Description: Micropower, Regulated Charge Pump DC/DC
• Manufacturer: LINER [Linear Technology]

PGOOD
LTC1751/LTC1751-3.3/LTC1751-5
TYPICAL PERFOR A CE CHARACTERISTICS
(LTC1751-3.3)
(LTC1751-5)
2V/DIV
5V/DIV
1V/DIV
4
SHDN
V
OUT
Start-Up
C
SS
= 10nF
2ms/DIV
100
4.9
4.8
5.2
5.1
5.0
20
10
90
80
70
60
50
40
30
0.001
0
0
Power Efficiency vs Load Current
Output Voltage vs Output Current
T
C
C
T
C
A
FLY
OUT
A
FLY
= 25 C
= 25 C
= 1 F
= 1 F
= 10 F
0.01
W
50
OUTPUT CURRENT (mA)
LOAD CURRENT (mA)
1751 G06
0.1
U
V
IN
100
= 2.7V
AC COUPLED
V
IN
1
50mV/DIV
V
= 3V
V
V
IN
V
IN
IN
IN
= 2.75V
= 4.4V
= 3.3V
V
150
= 2V
OUT
10
Output Ripple
V
I
C
OUT
IN
OUT
1751 G04
1751 G09
= 2.5V
= 80mA
= 10 F
100
200
5 s/DIV
250
200
150
100
10
50
40
30
20
0
2.0
2.5
Short-Circuit Output Current
vs Input Voltage
No Load Supply Current
vs Input Voltage
C
I
V
T
C
OUT
A
FLY
FLY
SHDN
= 25 C
1751 G07
= 0
= 1 F
= 1 F
3.0
2.5
= V
IN
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
AC COUPLED
3.5
40mA/DIV
50mV/DIV
3.0
T
T
T
A
A
A
= –40 C
= 85 C
= 25 C
V
4.0
I
OUT
OUT
3.5
Load Transient Response
V
IN
4.5
= 2.5V
4.0
5.0
1751 G10
1751 G05
4.5
5.5
50 s/DIV
1751 G08