LTC3868 Datasheet, PDF (38/38 Pages) Linear Technology – Low IQ, Dual 2-Phase Synchronous Step-Down Controller

LTC3868
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DESCRIPTION
Low I_Q, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controllers with 99% Duty Cycle
Low I_Q, Dual Output 2-Phase Synchronous Step-Down
DC/DC Controllers with 99% Duty Cycle
Low I_Q, Synchronous Step-Down DC/DC Controllers
Low I_Q, Synchronous Step-Down DC/DC Controllers
Low I_Q, High Voltage Synchronous Step-Down
DC/DC Controller
Low I_Q, High Voltage Synchronous Step-Down
DC/DC Controller
Low I_Q, High Voltage DC/DC Controller, 100% Duty Cycle
Dual 2-Phase, High Efficiency Synchronous Step-Down
DC/DC Controllers, R_SENSE or DCR Current Sensing and
Tracking
Dual, Multiphase, Synchronous DC/DC Step-Down
Controller with Diffamp and DCR Temperature
Compensation
Triple Output, Multiphase Synchronous Step-Down DC/DC
Controller, R_SENSE or DCR Current Sensing and Tracking
Small Footprint Wide V_IN Range Synchronous Step-Down
DC/DC Controller
High Frequency Synchronous Voltage Mode Step-Down
DC/DC Controller
No R_SENSE™ Wide V_IN Range Synchronous Step-Down
DC/DC Controllers
No R_SENSE Constant On-Time Synchronous Step-Down
DC/DC Controllers
10A DC/DC µModule^® Complete Power Supply
12A DC/DC µModule Complete Power Supply
COMMENTS
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ V_IN ≤ 38V,0.8V ≤ V_OUT ≤ 24V, I_Q = 50µA,
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ V_IN ≤ 24V,0.8V ≤ V_OUT ≤ 14V, I_Q = 170µA,
Phase-Lockable Fixed Operating Frequency 140kHz to 650kHz,
4V ≤ V_IN ≤ 36V,0.8V ≤ V_OUT ≤ 10V, I_Q = 30µA,
Phase-Lockable Fixed Operating Frequency 140kHz to 650kHz,
4V ≤ V_IN ≤ 36V,0.8V ≤ V_OUT ≤ 10V, I_Q = 80µA,
Adjustable Fixed Operating Frequency 100kHz to 500kHz,
4V ≤ V_IN ≤ 60V, 1.23V ≤ V_OUT ≤ 36V, I_Q = 120µA, TSSOP-16
Fixed 200kHz Operating Frequency, 4V ≤ V_IN ≤ 60V,
1.23V ≤ V_OUT ≤ 36V, I_Q = 100µA, TSSOP-16
Selectable Fixed 200kHz to 600kHz Operating Frequency,
4V ≤ V_IN ≤ 60V, 0.8V ≤ V_OUT ≤ V_IN, I_Q = 40µA, MSOP-10E
Phase-Lockable Fixed Operating Frequency 250kHz to 780kHz,
4V ≤ V_IN ≤ 30V, 0.8V ≤ V_OUT ≤ 5.25V
Phase-Lockable Fixed Frequency 250kHz to 770kHz,
4.5V ≤ V_IN ≤ 38V, 0.8V ≤ V_OUT ≤ 12.5V
Phase-Lockable Fixed Operating Frequency 250kHz to 750kHz,
4V ≤ V_IN ≤ 24V, V_OUT Up to 13.5V
Fixed 400kHz Operating Frequency, 4.5V ≤ V_IN ≤ 38V,
0.8V ≤ V_OUT ≤ 5.25V, 2mm × 3mm QFN-12, MSOP-12
Fast Transient Response, t_ON(MIN) = 30ns, 4V ≤ V_IN ≤ 38V,
0.6V ≤ V_OUT ≤ 0.8V_IN, MSOP-16E, 3mm × 3mm QFN-16
Phase-Lockable Fixed Operating Frequency 250kHz to 750kHz,
4V ≤ V_IN ≤ 38V, 0.8V ≤ V_OUT ≤ 5.25V, MSOP-16E, 3mm × 3mm
QFN-16, SSOP-16
Very Fast Transient Response, t_ON(MIN) = 43ns, 4V ≤ V_IN ≤ 38V,
V_OUT Up 90% of V_IN, MSOP-16E, 3mm × 3mm QFN-16, SSOP-16
High Efficiency, Compact Size, UltraFast™ Transient Response,
4.5V ≤ V_IN ≤ 28V, 0.8V ≤ V_OUT ≤ 5V, 15mm × 15mm × 2.8mm
High Efficiency, Compact Size, UltraFast Transient Response,
4.5V ≤ V_IN ≤ 28V, 0.8V ≤ V_OUT ≤ 5V, 15mm × 15mm × 2.8mm
38 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3868fb
LT 0110 REV B • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2009