LTC3827EG-1#PBF

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Analog Devices

LOW IQ, DUAL, 2-PHASE SYNCHRONOUS STEP-DOWN CONTROLLER

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DocumentsR384 Reliability Data Datasheet

LTC3827EG-1#PBF

Active

Analog Devices

LOW IQ, DUAL, 2-PHASE SYNCHRONOUS STEP-DOWN CONTROLLER

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DocumentsR384 Reliability Data Datasheet

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Technical Specifications

Parameters and characteristics for this part

Specification	LTC3827EG-1#PBF

Clock Sync	False
Control Features	Power Good, Soft Start, Enable, Tracking
Duty Cycle (Max) [Max]	99.4 %
Frequency - Switching [Max]	530 kHz
Frequency - Switching [Min]	250 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Package / Case	28-SSOP
Package / Case [custom]	0.209 in
Package / Case [custom]	5.3 mm
Supplier Device Package	28-SSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	36 V
Voltage - Supply (Vcc/Vdd) [Min]	4 V

LTC3827-1 Series

Low IQ, Dual, 2-Phase Synchronous Step-Down Controller

Part	Topology	Package / Case [custom]	Package / Case	Package / Case [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Function	Mounting Type	Supplier Device Package	Duty Cycle (Max) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Control Features	Output Configuration	Output Phases	Output Type	Frequency - Switching [Min]	Frequency - Switching [Max]	Number of Outputs
Analog Devices LTC3827EG-1#PBF	Buck	0.209 in	28-SSOP	5.3 mm	85 °C	-40 °C	Step-Down	Surface Mount	28-SSOP	99.4 %	4 V	36 V	Enable Power Good Soft Start Tracking	Positive	2	Transistor Driver	250 kHz	530 kHz	2
Analog Devices LTC3827EUH#TRPBF	Buck				85 °C	-40 °C	Step-Down	Surface Mount	32-QFN (5x5)	99.4 %	4 V	36 V	Enable Phase Control Power Good Soft Start Tracking	Positive	2	Transistor Driver	250 kHz	530 kHz	2
Analog Devices LTC3827EG-1#TRPBF	Buck	0.209 in	28-SSOP	5.3 mm	85 °C	-40 °C	Step-Down	Surface Mount	28-SSOP	99.4 %	4 V	36 V	Enable Power Good Soft Start Tracking	Positive	2	Transistor Driver	250 kHz	530 kHz	2
Analog Devices LTC3827IG-1#TRPBF	Buck	0.209 in	28-SSOP	5.3 mm	85 °C	-40 °C	Step-Down	Surface Mount	28-SSOP	99.4 %	4 V	36 V	Enable Power Good Soft Start Tracking	Positive	2	Transistor Driver	250 kHz	530 kHz	2

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 15.31
		10	$ 10.93
		25	$ 9.81
		100	$ 8.55
		250	$ 7.94
		500	$ 7.57
		1000	$ 7.45

Description

General part information

LTC3827-1 Series

The LTC3827-1 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 650kHz. Power loss and noise due to the ESR of the input capacitor ESR are minimized by operating the two controller output stages out of phase.The 80µA no-load quiescent current extends operating life in battery-powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3827-1 features a precision 0.8V reference and a power good output indicator. A wide 4V to 36V input supply range encompasses all battery chemistries.Independent TRACK/SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode at light loads. For a leadless package version (5mm × 5mm QFN) with additional features, see the LTC3827 datasheet.PGOODPolyPhaseDefeatable Current FoldbackPackageLTC38272YesYesQFN-32LTC3827-11NoNoSSOP-28ApplicationsAutomotive SystemsBattery-Operated Digital DevicesDistributed DC Power Systems