lt3742 Linear Technology Corporation, lt3742 Datasheet - Page 24

• Manufacturer Part Number: lt3742
• Description: Dual, 2-phase Step-down Switching Controller
• Manufacturer: Linear Technology Corporation

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PolyPhase is a registered trademark of Linear Technology Corporation. No R
LT3742
24
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
No R
Controllers
High Effi ciency Synchronous Step-Down Switching
Regulator
No R
Contr oller
Monolithic 3A, 200kHz/500kHz Step-Down Regulators
High Voltage Current Mode Switching Regulator Controllers V
High Voltage Synchronous Controller
High Voltage Current Mode Controller with Programmable
Operating Frequency
Dual, 2-Phase Synchronous Controller
2-Phase 550kHz, Dual Synchronous Step-Down Controller
20A to 200A PolyPhase
3-Phase, 600kHz Synchronous Step-Down Controller
Triple Output DC/DC Synchronous Controller
Dual, 2-Phase Synchronous Step-Down DC/DC Controller
High Voltage Synchronous Step-Down Single Output
Controller
SENSE
SENSE
●
Q
Q
Q
Q
FAX: [phone]
Dual Synchronous Controllers
Synchronous Step-Down Controllers
Synchronous Step-Down Controllers
, Dual, 2-Phase Synchronous Step-Down Controllers 2-Phase Operation, 30μA One Channel No Load I
TM
Wide Input Range Synchronous Step-Down
Current Mode Synchronous Step-Down
®
Synchronous Controllers
●
www.linear.com
SENSE
is a trademark of Linear Technology Corporation.
COMMENTS
97% Effi ciency, No Sense Resistor, 16-Pin SSOP
Output Fault Protection, 16-Pin SSOP
Up to 97% Effi ciency, 4V ≤ V
I
5.5V = <V
No R
Regulator, Burst Mode Operation, I
V
Burst Mode Operation, I
V
Operation, Sync Capability, I
Very Low Dropout; V
QFN and SSOP Packages, High Frequency for Smaller L and C
Expandable from 2-Phase to 12-Phase, Uses All Surface Mount
Components, No Heat Sink
0.6V ≤ V
Integrated MOSFET Drivers
3-Phase Step-Down DC/DC Controller, 3.3V ≤ V
Fixed Frequency 160kHz to 700kHz
4V ≤ V
2-Phase Operation, 115μA Total No Load I
No Load I
30μA No Load I
80μA No Load I
2-Phase Operation, 4V ≤ V
Option, I
Very Low Quiescent Current (120μA), V
100kHz to 500kHz, Synchronizable up to 600kHz
OUT
IN
IN
IN
up to 60V, I
up to 60V, I
up to 60V, I
up to 20A
SENSE
IN
OUT
OUT
≤ 36V, 0.8V ≤ V
IN
Q
, Voltage Mode Control, GN16 Package
with One Channel On
= <60V, 0.1Ω Saturation Switch, 16-Lead SSOP Package
≤ 6V, 4.5V ≤ V
up to 20A, 4mm × 4mm QFN
OUT
OUT
OUT
Q
Q
, 4V ≤ V
, 4V ≤ V
≤ 5A, 16-Lead TSSOP Package, Onboard Bias
≤ 20A, Current Mode, Onboard Bias Regulator,
≤ 5A, Onboard Bias Regulator, Burst Mode
OUT
Q
OUT
IN
IN
≤ 14V
= 100μA, 16-Lead TSSOP Package
IN
IN
≤ 36V, 0.8V ≤ V
≤ 36V, 0.8V ≤ V
Q
IN
≤ 10V
≤ 24V, 95% Effi ciency, No R
≤ 32V, I
= 120μA, 16-Lead TSSOP Package
≤ 36V, 0.8V ≤ V
© LINEAR TECHNOLOGY CORPORATION 2007
Q
< 100μA, 200kHz Operation
OUT
IN
≤ 60A,
up to 60V, Fixed Frequency
Q
OUT
OUT
, 4V ≤ V
OUT
≤ 10V
≤ 10V
IN
LT 1207 • PRINTED IN USA
Q
≤ 36V,
(50μA Total),
≤ (0.9)(V
IN
≤ 36V, 80μA
SENSE
IN
),
3742f