LT3690 LINER [Linear Technology], LT3690 Datasheet - Page 20

• Manufacturer Part Number: LT3690
• Description: 42V, 2.5A Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

LT8610
TYPICAL APPLICATION
3.8V TO 42V
RELATED PARTS
PART NUMBER
LT8611
LT3690
LT3971
LT3991
LT3970
LT3990
LT3480
LT3980
20
V
IN
24.3k
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
4.7μF
3.3V and 1.8V with Ratio Tracking
10nF
1μF
f
f
10k
SW
SW
4.7μF
= 500kHz
= 500kHz
1μF
DESCRIPTION
42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower Step-Down
DC/DC Converter with I
36V with 60V Transient Protection, 4A, 92% Efficiency, 1.5MHz
Synchronous Micropower Step-Down DC/DC Converter with I
38V, 1.2A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
55V, 1.2A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
40V, 350mA, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
62V, 350mA, 2.2MHz High Efficiency MicroPower Step-Down DC/DC
Converter with I
36V with Transient Protection to 60V, 2A (I
Step-Down DC/DC Converter with Burst Mode Operation
58V with Transient Protection to 80V, 2A (I
Step-Down DC/DC Converter with Burst Mode Operation
88.7k
88.7k
V
EN/UV
PG
SYNC
TR/SS
INTV
V
EN/UV
PG
SYNC
TR/SS
INTV
IN
IN
RT
RT
CC
CC
●
LT8610
LT8610
FAX: [phone]
PGND
PGND
GND
GND
Q
Q
Q
Q
BIAS
BIAS
BST
BST
SW
SW
FB
FB
= 2.8μA
= 2.8μA
= 2.5μA
= 2.5μA
Q
97.6k
93.1k
8610 TA08
= 2.5μA and Input/Output Current Limit/Monitor
0.1μF
0.1μF
5.6μH
4.7pF
3.3μH
80.6k
4.7pF
232k
●
www.linear.com
47μF
68μF
OUT
OUT
V
3.3V
2.5A
V
1.8V
2.5A
OUT1
OUT2
), 2.4MHz, High Efficiency
), 2.4MHz, High Efficiency
3.8V TO 27V
Q
V
= 70μA
IN
10nF
f
4.7μF
SW
Ultralow I
= 2MHz
1μF
COMMENTS
V
I
V
I
V
I
V
I
V
I
V
I
V
I
MSOP-10E Packages
V
I
MSOP-16E Packages
18.2k
SD
SD
SD
SD
SD
SD
Q
Q
IN
IN
IN
IN
IN
IN
IN
IN
= 70μA, I
= 85μA, I
V
EN/UV
PG
SYNC
TR/SS
INTV
: 3.4V to 42V, V
: 3.9V to 36V, V
: 4.2V to 38V, V
: 4.2V to 55V, V
: 4.2V to 40V, V
: 4.2V to 62V, V
: 3.6V to 36V, Transient to 60V, V
: 3.6V to 58V, Transient to 80V, V
IN
< 1μA, 3mm × 5mm QFN-24 Package
< 1μA, 4mm × 6mm QFN-26 Package
< 1μA, 3mm × 3mm DFN-10 and MSOP-10E Packages
< 1μA, 3mm × 3mm DFN-10 and MSOP-10E Packages
< 1μA, 3mm × 2mm DFN-10 and MSOP-10 Packages
< 1μA, 3mm × 3mm DFN-10 and MSOP-6E Packages
RT
CC
Q
LT8610
PGND
2.5V, 3.3V Step-Down with LDO
SD
SD
GND
BIAS
BST
< 1μA, 3mm × 3mm DFN-10 and
< 1μA, 3mm × 4mm DFN-16 and
SW
FB
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
© LINEAR TECHNOLOGY CORPORATION 2012
412k
0.1μF
1.8μH
4.7pF
1M
= 0.97V, I
= 0.985V, I
= 1.21V, I
= 1.21V, I
= 1.21V, I
= 1.21V, I
IN
SHDN
LT3008-2.5
47μF
OUT(MIN)
OUT(MIN)
SENSE
Q
Q
Q
Q
Q
LT 0512 • PRINTED IN USA
8610 TA10
Q
OUT
V
3.3V
2.5A
= 2.5μA,
= 2.8μA,
= 2.8μA,
= 2.5μA,
= 2.5μA,
OUT1
= 70μA,
= 0.78V,
= 0.78V,
2.2μF
V
2.5V
20mA
8610p
OUT2