LT8611 Datasheet, PDF (24/24 Pages) Linear Technology – 42V, 2.5A Synchronous Step-Down Regulator

LT8611
TYPICAL APPLICATION
Coincident Tracking Step-Downs Each with 2A Output Current Limit
V_IN
3.8V TO 42V
V_IN
BST
10μF _{ON OFF EN/UV}
SYNC
SW
LT8611
IMON
ISP
ICTRL
ISN
BIAS
PG
INTV_CC
TR/SS
0.1μF
RT
FB
PGND GND
1μF
86.6k
0.1μF
5.6μH _0.025Ω
1μF
10pF
232k
97.6k
16.5k
20k
47μF
V_OUT
3.3V
2A
f = 500kHz
V_IN
BST
10μF
ON OFF EN/UV
SYNC
SW
LT8611
IMON
ISP
ICTRL
ISN
BIAS
PG
INTV_CC
TR/SS
RT
FB
PGND GND
1μF
88.7k
f = 500kHz
0.1μF
5.6μH _0.025Ω
1μF
V_OUT
1.8V
2A
4.7pF
80.6k
93.1k
68μF
8611 TA12
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PART NUMBER DESCRIPTION
COMMENTS
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36V with Transient Protection to 60V, 2A (I_OUT), 2.4MHz, High Efficiency
Step-Down DC/DC Converter with Burst Mode Operation
V_IN: 3.4V to 42V, V_OUT(MIN) = 0.97V, I_Q = 2.5μA,
I_SD < 1μA, MSOP-16E Package
V_IN: 3.9V to 36V, V_OUT(MIN) = 0.985V, I_Q = 70μA,
I_SD < 1μA, 4mm × 6mm QFN-26 Package
V_IN: 4.2V to 38V, V_OUT(MIN) = 1.21V, I_Q = 2.8μA,
I_SD < 1μA, 3mm × 3mm DFN-10 and MSOP-10E Packages
V_IN: 4.2V to 55V, V_OUT(MIN) = 1.21V, I_Q = 2.8μA,
I_SD < 1μA, 3mm × 3mm DFN-10 and MSOP-10E Packages
V_IN: 4.2V to 40V, V_OUT(MIN) = 1.21V, I_Q = 2.5μA,
I_SD < 1μA, 3mm × 2mm DFN-10 and MSOP-10 Packages
V_IN: 4.2V to 62V, V_OUT(MIN) = 1.21V, I_Q = 2.5μA,
I_SD < 1μA, 3mm × 3mm DFN-10 and MSOP-6E Packages
V_IN: 3.6V to 36V, Transient to 60V, V_OUT(MIN) = 0.78V,
I_Q = 70μA, I_SD < 1μA, 3mm × 3mm DFN-10 and
MSOP-10E Packages
LT3980
58V with Transient Protection to 80V, 2A (I_OUT), 2.4MHz, High Efficiency
Step-Down DC/DC Converter with Burst Mode Operation
V_IN: 3.6V to 58V, Transient to 80V, V_OUT(MIN) = 0.78V,
I_Q = 85μA, I_SD < 1μA, 3mm × 4mm DFN-16 and
MSOP-16E Packages
8611p
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
LT 0512 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2012