LTC3865/LTC3865-1
relaTeD parTs
PART NUMBER
DESCRIPTION
COMMENTS
LTC3850/LTC3850-1 Dual 2-Phase, High Efficiency Synchronous Step-Down DC/DC Phase-Lockable Fixed Operating Frequency 250kHz to 780kHz,
LTC3850-2
LTC3855
Controllers, R
or DCR Current Sensing and Tracking
4V ≤ V ≤ 30V, 0.8V ≤ V
≤ 5.25V
SENSE
IN
OUT
Dual, Multiphase Synchronous Step-Down DC/DC Controller
with Diffamp and DCR Temperature Compensation
Phase-Lockable Fixed Operating Frequency 250kHz to 770kHz,
4.5V ≤ V ≤ 38V, 0.8V ≤ V ≤ 12.5V
IN
OUT
LTM®4619
Dual, 4A DC/DC µModule® Complete Power Supply
High Efficiency, Compact Size, Fast Transient Response
4.5V ≤ V ≤ 26.5V, 0.8V ≤ V
≤ 5V, 15mm × 15mm × 2.8mm
OUT
IN
LGA
LTC3868/LTC3868-1 Low I , Dual Output 2-Phase Synchronous Step-Down
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ V ≤ 24V, 0.8V ≤ V ≤ 14V, I = 170µA,
Q
DC/DC Controller with 99% Duty Cycle
IN
OUT
Q
LTC3857/LTC3857-1 Low I , Dual, 2-Phase Synchronous Step-Down Controllers
50µA I , 0.8V ≤ V
≤ 24V, 4V ≤ V ≤ 38V, Output Overcurrent
OUT IN
Q
Q
Foldback Protection
LTC3858/LTC3858-1 Low I , Dual, 2-Phase Synchronous Step-Down Controllers
170µA I , 0.8V ≤ V
≤ 24V, 4V ≤ V ≤ 38V, Output Overcurrent
IN
Q
Q
OUT
Latchoff Protection
Phase-Lockable Fixed Operating Frequency 250kHz to 750kHz,
4V ≤ V ≤ 24V, V Up to 13.5V
LTC3853
LTC3854
Triple Output, Multiphase Synchronous Step-Down DC/DC
Controller, R or DCR Current Sensing and Tracking
SENSE
IN
OUT
Small Footprint Wide V Range Synchronous Step-Down
Fixed 400kHz Operating Frequency 4.5V ≤ V ≤ 38V,
IN
IN
DC/DC Controller
0.8V ≤ V
≤ 5.25V, 2mm × 3mm QFN-12
OUT
LTC3851A
LTC3851A-1
No R
™ Wide V Range Synchronous Step-Down
Phase-Lockable Fixed Operating Frequency 250kHz to 750kHz,
SENSE
IN
DC/DC Controller
4V ≤ V ≤ 38V, 0.8V ≤ V
≤ 5.25V, MSOP-16E,
IN
OUT
3mm × 3mm QFN-16, SSOP-16
LTC3775
High Frequency, Synchronous Voltage Mode Step-Down
DC/DC Controller
Synchronizable Fixed Frequency 250kHz to 1MHz, t
= 30ns,
ON(MIN)
4V ≤ V ≤ 38V, 0.6V ≤ V
≤ 0.8V, MSOP-16E,
IN
OUT
3mm × 3mm QFN-16
LTC3878
No R
Constant On-Time Synchronous Step-Down
Very Fast Transient Response, t
= 43ns, 4V ≤ V ≤ 38V,
IN
SENSE
ON(MIN)
DC/DC Controller
0.8V ≤ V
≤ 0.9V , SSOP-16
OUT IN
LTC3879
No R
Constant On-Time Synchronous Step-Down
Very Fast Transient Response, t
0.6V ≤ V
= 43ns, 4V ≤ V ≤ 38V,
IN
SENSE
ON(MIN)
DC/DC Controller
≤ 0.9V , MSOP-16E, 3mm × 3mm QFN-16
IN
OUT
LTM4600HV
LTM4601AHV
LTC3610
10A DC/DC µModule Regulator
High Efficiency, Compact Size, Fast Transient Response
4.5V ≤ V ≤ 28V, 0.8V ≤ V ≤ 5V, 15mm × 15mm × 2.8mm LGA
IN
OUT
12A DC/DC µModule Regulator
High Efficiency, Compact Size, Fast Transient Response
4.5V ≤ V ≤ 28V, 0.8V ≤ V ≤ 5V, 15mm × 15mm × 2.8mm LGA
IN
OUT
12A, 1MHz, Monolithic Synchronous Step-Down
DC/DC Converter
High Efficiency, Adjustable Constant On-Time 4V ≤ V ≤ 24V,
IN
V
0.6V, 9mm × 9mm QFN-64
OUT(MIN)
LTC3611
10A, 1MHz, Monolithic Synchronous Step-Down
DC/DC Converter
High Efficiency, Adjustable Constant On-Time 4V ≤ V ≤ 32V,
IN
OUT(MIN)
V
0.6V, 9mm × 9mm QFN-64
3865f
LT 0210 • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
ꢂꢅ
●
●
LINEAR TECHNOLOGY CORPORATION 2010
(408) 432-1900 FAX: (408) 434-0507 www.linear.com