LT8616 Series

Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current

Catalog

Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current

Part	Supplier Device Package	Output Type	Package / Case	Voltage - Output (Max) [Max]	Topology	Current - Output	Frequency - Switching [Min]	Frequency - Switching [Max]	Output Configuration	Voltage - Output (Min/Fixed) [Min]	Voltage - Input (Min) [Min]	Function	Mounting Type	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Max) [Max]	Package / Case [custom]	Package / Case [x]
Analog Devices LT8616EUDE#TRPBF	28-QFN (3x6)	Adjustable	28-WFQFN Exposed Pad	41.8 V	Buck	1.5 A 2.5 A	200 kHz	3 MHz	Positive	0.79 V	3.4 V	Step-Down	Surface Mount	2	-40 °C	125 °C	42 V
Analog Devices LT8616HFE#TRPBF	28-TSSOP-EP	Adjustable	28-TSSOP Exposed Pad	41.8 V	Buck	1.5 A 2.5 A	200 kHz	3 MHz	Positive	0.79 V	3.4 V	Step-Down	Surface Mount	2	-40 °C	125 °C	42 V	4.4 mm	0.173 in
Analog Devices LT8616EFE#TRPBF	28-TSSOP-EP	Adjustable	28-TSSOP Exposed Pad	41.8 V	Buck	1.5 A 2.5 A	200 kHz	3 MHz	Positive	0.79 V	3.4 V	Step-Down	Surface Mount	2	-40 °C	125 ¯C	42 V	4.4 mm	0.173 in

Catalog

Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current

Key Features

• Wide Input Voltage Range: 3.4V to 42V

• 2.5A and 1.5A Buck Regulators with Separate Inputs

• Fast Minimum Switch On-Time: 35ns

• Ultralow Quiescent Current Burst Mode®Operation:6.5μA IQRegulating 12VINto 5VOUTand 3.3VOUTOutput Ripple < 15mV

• 6.5μA IQRegulating 12VINto 5VOUTand 3.3VOUT

• Output Ripple < 15mV

• 180° Out of Phase SwitchingAdjustable: 200kHz to 3MHz

• Adjustable: 200kHz to 3MHz

• Synchronizable: 250kHz to 3MHz

• Accurate 1V Enable Pin Thresholds

• Internal Compensation

• Output Soft-Start and Tracking

• TSSOP Package: Output Stays at or Below Regulation Voltage During Adjacent Pin Short or When a Pin Is Left Floating

• Thermally Enhanced 28-Lead TSSOP and 3mm × 6mm QFN Packages

Description

The LT8616 is a high efficiency, high speed, dual synchronous monolithic step-down switching regulator that consumes only 6.5μA of quiescent current with both channels enabled. Both channels contain all switches and necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while minimizing output ripple. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The enable pins have accurate 1V thresholds and can be used to program undervoltage lockout. Capacitors on the TR/SS pins programs the output voltage ramp rate during startup while the PG pins signal when each output is within 10% of the programmed output voltage. The LT8616 is available in a TSSOP package for high reliability.ApplicationsAutomotive and Industrial SuppliesGeneral Purpose Step-Down