LTC1754-3.3 LINER [Linear Technology], LTC1754-3.3 Datasheet - Page 3
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LTC1754-3.3
Manufacturer Part Number
LTC1754-3.3
Description
Micropower, Regulated 3.3V/5V Charge Pump with Shutdown in SOT-23
Manufacturer
LINER [Linear Technology]
Datasheet
1.LTC1754-3.3.pdf
(12 pages)
TYPICAL PERFOR A CE CHARACTERISTICS
0mA to 20mA
AC COUPLED
3.40
3.35
3.30
3.25
3.20
10mA/DIV
20mV/DIV
0
V
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
= 2V
OUTPUT CURRENT (mA)
= 10 F
40
180
160
140
120
100
80
60
V
IN
2.0
V
vs Supply Voltage
= 2V
T
C
50 s/DIV
OUT
A
FLY
60
V
= 25 C
IN
= 1 F
Short-Circuit Current
2.5
= 2.5V
W
SUPPLY VOLTAGE (V)
80
3.0
1754 G01
U
100
1754 G07
3.5
AC COUPLED
4.0
20mV/DIV
20
15
10
5
2.0
No Load Supply Current
vs Supply Voltage
V
1735 G04
I
C
V
OUT
OUT
FLY
SHDN
4.5
= 0 A
= 1 F
2.5
Output Ripple
V
C
I
OUT
= V
IN
OUT
= 2V
IN
= 20mA
SUPPLY VOLTAGE (V)
= 10 F
3.0
T
T
T
A
A
A
= – 40 C
= 85 C
= 25 C
3.5
5 s/DIV
100
90
80
70
60
50
40
30
20
10
0.001
0
4.0
Efficiency vs Load Current
T
V
C
LTC1754-3.3, T
A
IN
FLY
1754 G02
= 25 C
= 2V
LTC1754-3.3/LTC1754-5
= 1 F
0.01
4.5
1754 G08
LOAD CURRENT (mA)
0.1
1V/DIV
1V/DIV
SHDN
V
A
OUT
20
15
10
5
0
= 25 C unless otherwise noted.
1
Supply Current vs V
1
T
I
Start-Up Time
V
C
V
OUT
A
IN
OUT
IN
= 25 C
= 2V
= 2V
= 0 A
= 10 F
V
V
IN
10
SHDN
2
= 2.5V
1754 G05
CONTROL VOLTAGE (V)
100
200 s/DIV
3
SHDN
V
IN
= 4.5V
4
1754 G03
3
1754 G9
5