LTC3716 - 2-Phase, 5-Bit VID, Current Mode, High Efficiency, Synchronous Step-Down Switching Regulator

An operating mode select pin (FCB) can be used to regulate a secondary winding or select among three modes including BurstMode operation for highest efficiency. An internal differential amplifier provides true remote sensing of the regulated supply’s positive and negative output terminals as required in high current applications.

The RUN/SS pin provides soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when the overcurrent latchoff is disabled. OPTI-LOOP compensation allows the transient response to be optimized for a wide range of output capacitors and ESR values.

Features

Output Stages Operate Antiphase Reducing Input and Output Capacitance Requirements and Power Supply Induced Noise
Dual Input Supply Capability for Load Sharing
5-Bit Mobile VID Code: VOUT = 0.6V to 1.75V
±1% Output Voltage Accuracy
True Remote Sensing Differential Amplifier
Power Good Output Voltage Monitor
Supports Active Voltage Positioning
Current Mode Control Ensures Current Sharing
OPTI-LOOP™ Compensation Minimizes COUT
Three Operational Modes: PWM, Burst and Cycle Skip
Programmable Fixed Frequency: 150kHz to 300kHz
Wide VIN Range: 4V to 36V Operation
Adjustable Soft-Start Current Ramping
Internal Current Foldback and Short-Circuit Shutdown
Overvoltage Soft Latch Eliminates Nuisance Trips
Available in 36-Lead Narrow SSOP Package

Typical Application

Applications

Mobile Computer CPU Supply

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC3716EG#PBF	SSOP-24	E	$4.75	$4.35
LTC3716EG#TRPBF	SSOP-24	E		$4.45

Demo Boards

Part Number	Description	Price
DC377B-A	LTC3716EG \| 2-Phase Mobile CPU VRM, 7 to 24Vin, 0.6 to 1.75Vout @ 25A (maximum performance)	$150.00
DC377B-B	LTC3716EG \| 2-Phase Mobile CPU VRM, 7 to 24Vin, 0.6 to 1.75Vout @ 25A (minimum profile)	Contact Factory
DC387A	LTC3716EG \| IMVPII Core Supply (Interposer)	Contact Factory