Datasheet

LT1936
18
1936fd
TYPICAL APPLICATIONS
2.5V Step-Down Converter
Effi ciency, 2.5V Output Minimum Input Voltage
12V Step-Down Converter
LOAD CURRENT (A)
0
60
EFFICIENCY (%)
70
80
90
100
0.5 1.0
1936 TA07b
1.5
V
OUT
= 2.5V
T
A
= 25°C
V
IN
= 12V
V
IN
= 5V
LOAD CURRENT (mA)
1
INPUT VOLTAGE (V)
4.5
5.0
1936 TA07c
4.0
3.5
3.0
10
100
1000
5.5
V
OUT
= 2.5V
TO START
T
A
= –45°C
TO RUN
T
A
= –45°C
TO START
T
A
= 25°C
TO RUN
T
A
= 25°C
V
IN
3.6V TO 36V
ON OFF
D1
D2
L1
6.2μH
R1
11k
D1: DFLS140L
D2: MBRO540
L1: TOKO D63CB
C2
47μF
1936 TA07a
C1
4.7μF
C3
1μF
V
OUT
2.5V
1.2A
T
A
> 0°C
V
IN
BOOST
V
C
GND
COMP FB
LT1936
SHDN SW
R2
10k
V
IN
14.5V TO 36V
ON OFF
D1
D2
L1
22μH
R1
182k
C2
22μF
1936 TA08
C1
2.2μF
D1: MBRM140
D2: 1N4148
D3: CMDZ5235B
C3
0.22μF
1.8k
V
OUT
12V
1.2A
D3
6.8V
V
IN
BOOST
V
C
GND
COMP FB
LT1936
SHDN SW
R2
20k
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