Datasheet

LT3759
29
3759fc
For more information www.linear.com/3759
TYPICAL APPLICATIONS
5V to 15V Input, –5V/3A Output Inverting Converter
Efficiency vs Output Current Load Step Response at V
IN
= 10V
Frequency Foldback Waveforms When Output Short-Circuits
OUTPUT CURRENT (A)
0.001
EFFICIENCY (%)
60
80
100
1
3759 TA06b
40
0.01 0.1
10
10
20
30
50
70
90
0
V
IN
= 15V
V
IN
= 5V
V
OUT
500mV/DIV
(AC)
I
OUT
2A/DIV
3759 TA06c
500µs/DIV
4A
0.5A
V
OUT
5V/DIV
V
SW
10V/DIV
I
L1A + L1B
5A/DIV
3759 TA06d
20µs/DIV
SENSE
LT3759
V
IN
DRIVE
V
IN
5V TO 15V
C
IN
47µF
16V
X5R
27.4k
300kHz
GATE
PGOOD
FBX
GND
INTV
CC
EN/UVLO
SYNC
RT
SS
VC
R2
105k
R1
45.3k
0.1µF
9.1k
10nF
15.8k
84.5k
C
DC
4.7µF
25V, X5R, ×2
5mΩ
0.5W
C
VCC
4.7µF
10V
X5R
V
OUT
–5V
3A, 5V ≤ V
IN
≤ 10V
4A, 10V < V
IN
≤ 15V
C
OUT
47µF
6.3V, X5R
×4
3759 TA06a
M1
100k
L1B
3.3µH
L1A
3.3µH
D1
M1: VISHAY SILICONIX Si7848BDP
L1A, L1B: COILTRONICS DRQ127-3R3
D1: VISHAY 6CWQ03FN
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