Datasheet

LT3976
25
3976f
For more information www.linear.com/3976
Typical applicaTions
5V Step-Down Converter
4V Step-Down Converter with a High Impedance Input Source
12V Step-Down Converter
2.5V Step-Down Converter
5V, 2MHz Step-Down Converter with Power Good
1.8V Step-Down Converter
V
IN
PG BOOST
EN
0.47µF
3976 TA05
47nF
C
BULK
100µF
24V
10µF
432k
f = 800kHz
D = PDS540
L = IHLP-2525CZ-01
54.9k
499k
5.49M
V
OUT
4V
5A
3.3µH
LT3976
SS
RT
SW
OUT
FB
SYNC GND
1M
10pF
+
V
+
–
47µF
1210
×2
2Ω
470pF
V
IN
EN
BOOST
OFF ON
V
IN
4.3V TO 40V
PG
0.47µF
47µF
1210
×4
3976 TA06
10nF
10µF
×2
909k
f = 400kHz
D = PDS540
L = IHLP-2525CZ-01
130k
V
OUT
2.5V
5A
3.3µH
DFLS160
LT3976
SS
RT
SW
OUT
FB
SYNC GND
1M
4.7pF
2Ω
470pF
V
IN
EN BOOSTOFF ON
V
IN
4.3V TO 27V
PG
0.47µF
47µF
1210
×4
3976 TA07
10nF
10µF
1M
f = 500kHz
D = PDS540
L = IHLP-2525CZ-01
97.6k
V
OUT
1.8V
5A
2.2µH
DFLS160
LT3976
SS
RT
SW
OUT
FB
SYNC GND
499k
10pF
2Ω
470pF
V
IN
EN
BOOST
OFF ON
V
IN
5.9V TO 18V
(40V TRANSIENTS)
0.47µF
3976 TA04
10nF
4.7µF
316k
150k
f = 2MHz
D = PDS540
L = IHLP-2525CZ-01
14.7k
V
OUT
5V
5A
PGOOD
1.5µH
LT3976
SS
RT
SW
OUT
PG
FB
SYNC GND
1M
10pF
47µF
1210
2Ω
470pF
V
IN
EN BOOSTOFF ON
V
IN
6V* TO 40V
PG
0.47µF
47µF
1210
×2
3976 TA02
10nF
10µF
316k
2Ω
470pF
f = 800kHz
D = PDS540
L = IHLP-2525CZ-01
54.9k
V
OUT
5V
5A
3.3µH
LT3976
SS
RT
SW
OUT
FB
SYNC GND
1M
10pF
* MINIMUM V
IN
CAN BE LOWERED WITH ADDITIONAL
INPUT AND OUTPUT CAPACITANCE.
V
IN
EN BOOSTOFF ON
V
IN
13.2V* TO 40V
PG
0.47µF
3976 TA03
10nF
10µF
110k
f = 800kHz
D = PDS540
L = IHLP-4040DZ-01
54.9k
V
OUT
12V
5A
6.8µH
LT3976
SS
RT
SW
OUT
FB
SYNC GND
1M
10pF
47µF
1210
2Ω
470pF
* MINIMUM V
IN
CAN BE LOWERED WITH ADDITIONAL
INPUT AND OUTPUT CAPACITANCE.