LT1109A Linear Technology, LT1109A Datasheet - Page 3

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LT1109A

Manufacturer Part Number
LT1109A
Description
Micropower DC/DC Converter Flash Memory VPP Generator Adjustable and Fixed 5V/ 12V
Manufacturer
Linear Technology
Datasheet

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TYPICAL PERFOR
1.4
1.2
1.0
0.8
0.6
0.4
0.2
90
85
80
75
70
0
4.2
0
Efficiency
Switch Saturation Voltage
V
V
LOAD = 120mA
L = 29 H
IN
OUT
4.4
0.2
= 5V
= 12V
4.6
0.4
INPUT VOLTAGE (V)
4.8
0.6
I
SWITCH
500
450
400
350
300
250
200
5.0
0.8
–50
Quiescent Current
V
(A)
IN
5.2
1.0
= 2V
–25
1.2
5.4
W
V
TEMPERATURE (°C)
V
IN
0
IN
5.6
1.4
A
1109A G01
= 3V
1109A G04
= 5V
U
5.8
1.6
25
CE
50
C
HARA TERISTICS
160
140
120
100
0.7
0.6
0.5
0.4
0.3
0.2
0.1
80
60
0
–50
75
–50
Oscillator Frequency
Switch Saturation Voltage
1109A G07
I
SW
100
–25
= 650mA
–25
C
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
25
25
50
50
500
450
400
350
300
250
75
75
1109A G02
1109A G05
0
Quiescent Current
T
100
A
100
2
= 25°C
4
6
INPUT VOLTAGE (V)
8
80
75
70
65
60
55
50
8
7
6
5
4
3
–50
–50
10
Duty Cycle
Switch On Time
12
–25
–25
14
TEMPERATURE (°C)
TEMPERATURE (°C)
16
0
0
1109A G08
18
25
25
20
LT1109A
50
50
75
75
1109A G03
1109A G06
3
100
100

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