LT1934 LINER [Linear Technology], LT1934 Datasheet - Page 4

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LT1934

Manufacturer Part Number
LT1934
Description
Micropower Step-Down Switching Regulators in ThinSOT
Manufacturer
LINER [Linear Technology]
Datasheet

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LT1934/LT1934-1
TYPICAL PERFOR A CE CHARACTERISTICS
4
14
12
16
10
8
6
4
0
2
0
Frequency Foldback
T
A
= 25 C
0.2
FEEDBACK PIN VOLTAGE (V)
0.4
6.0
5.5
5.0
4.5
4.0
3.5
3.0
20
15
10
0.6
5
0
–50
0.1
Quiescent Current
vs Temperature
Minimum Input Voltage
V
LT1934
V
T
BOOST DIODE TIED TO OUTPUT
OUT
A
OUT
= 25 C
0.8
–25
= 3.3V
= 3.3V
V
V
IN
W
IN
TO START
1
1.0
TO RUN
LOAD CURRENT (mA)
0
TEMPERATURE ( C)
1934 G07
U
25
1.2
10
50
75
1.25
1.27
1.26
1.24
1.23
1.22
100
–50 –25
100
V
FB
1934 G10
1934 G12
vs Temperature
125
0
TEMPERATURE ( C)
25
50
75
2.5
4.0
3.5
3.0
2.0
8
7
6
5
4
100
–50
0.1
Undervoltage Lockout
vs Temperature
Minimum Input Voltage
V
1934 G08
LT1934
V
T
BOOST DIODE TIED TO OUTPUT
OUT
A
OUT
125
= 25 C
–25
= 5V
= 5V
V
V
IN
IN
TO START
1
LOAD CURRENT (mA)
0
TO RUN
TEMPERATURE ( C)
25
2.0
1.5
1.0
0.5
0
0
SHDN Bias Current
vs SHDN Voltage
10
T
50
A
= 25 C
2
75
SHDN PIN VOLTAGE (V)
100
100
4
1934 G11
1934 G13
125
6
8
10
1934 G09
1934f
12

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