ltc1754-5 Linear Technology Corporation, ltc1754-5 Datasheet - Page 4

• Manufacturer Part Number: ltc1754-5
• Description: Micropower, Regulated 3.3v/5v Charge Pump With Shutdown In Sot-23
• Manufacturer: Linear Technology Corporation

LTC1754-3.3/LTC1754-5
TYPICAL PERFOR A CE CHARACTERISTICS
0mA to 50mA
4
AC COUPLED
5.15
5.10
5.05
5.00
4.95
4.90
4.85
25mA/DIV
50mV/DIV
V
0
Output Voltage vs Output Current
I
OUT
OUT
T
C
C
A
OUT
FLY
= 25 C
Load Transient Response
V
C
= 1 F
= 10 F
IN
OUT
20
= 3V
OUTPUT CURRENT (mA)
= 10 F
40
220
200
180
160
140
120
100
V
IN
2.5
V
vs Supply Voltage
= 2.7V
V
T
C
OUT
50 s/DIV
IN
A
FLY
60
= 25 C
= 3V
3.0
= 1 F
Short-Circuit Current
W
SUPPLY VOLTAGE (V)
80
3.5
1574-5 G02
U
100
4.0
1754 G16
4.5
AC COUPLED
20mV/DIV
20
15
10
5.0
5
2.5
No Load Supply Current
vs Supply Voltage
1754 G13
V
I
C
V
OUT
OUT
FLY
SHDN
5.5
3.0
= 0 A
= 1 F
Output Ripple
V
C
I
OUT
= V
IN
OUT
= 3V
IN
= 50mA
= 10 F
SUPPLY VOLTAGE (V)
3.5
T
A
= –40 C
4.0
T
T
5 s/DIV
A
A
= 85 C
= 25 C
4.5
100
20
10
90
80
70
60
50
40
30
0.001
0
5.0
Efficiency vs Load Current
V
T
C
LTC1754-5, T
IN
A
FLY
1754 G11
= 25 C
= 3V
= 1 F
0.01
5.5
1754 G17
LOAD CURRENT (mA)
0.1
5V/DIV
1V/DIV
A
SHDN
V
= 25 C unless otherwise noted.
OUT
25
20
10
15
5
0
1
Supply Current vs V
1
Start-Up Time
T
I
V
C
OUT
A
IN
OUT
= 25 C
V
V
= 3V
IN
IN
= 0 A
= 10 F
= 3.3V
= 2.7V
V
2
10
SHDN
1754-5 G05
V
CONTROL VOLTAGE (V)
IN
100
3
= 5.5V
100 s/DIV
SHDN
4
5
1574 G12
1754 G18
6