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Analog Devices LTC3727LXEUH-1#PBF — Analog & Data Acquisition

LTC3727LXEUH-1#PBF Analog Devices Dual Buck, 2-Phase, 32-QFN

MPNLTC3727LXEUH-1#PBF
End of Life

Analog Devices LTC3727LXEUH-1#PBF, dual-output step-down controller, 2-phase synchronous buck, 4-28V input, 255-530kHz, 32-WFQFN exposed pad, Bulk.

$8.48Ref. price · indicative, final on quote
Analog Devices LTC3727LXEUH-1#PBF datasheet (PDF)
Packaging32-WFQFN Exposed Pad
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LTC3727LXEUH-1#PBF specifications
ParameterValue
Output typeTransistor Driver
MountingSurface Mount
Voltage - supply (Vcc (Vdd))4V ~ 28V
Frequency255kHz ~ 530kHz
I/O channels2
Output phases2
Duty cycle99.4%
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
FunctionStep-Down
TopologyBuck
Clock syncNo
Case32-WFQFN Exposed Pad
Control featuresEnable, Power Good, Soft Start
Output configurationPositive
Synchronous rectifierYes

Product details

Package and board-fit — 32-QFN with exposed pad

The LTC3727LXEUH-1#PBF ships in a 32-WFQFN exposed-pad package (supplier device package 32-QFN, 5x5 mm).

What the dual-phase synchronous buck buys you

This is a dual-output (2-phase) current-mode step-down controller with synchronous rectification built in — no external Schottky catch diode needed for the main power path. The 99.4% max duty cycle lets it run near dropout, useful when the input rail sags close to the output voltage. Switching frequency is programmable from 255 kHz to 530 kHz; higher frequency shrinks the inductor and capacitor but increases switching losses. The two outputs can be phased 180° apart to reduce input ripple current — a real advantage when the input source is a long cable or a battery with high internal impedance.

Supply range and control features

The controller integrates Enable, Power Good, and Soft Start — the soft-start pin sets the output ramp time with a single capacitor.

Frequently asked questions

What is the closest pin-compatible alternative to LTC3727LXEUH-1#PBF?

The LTC3727LXEUH-1#PBF is a specific dual-phase controller from the LTC3727 family; a functionally similar part would require checking the same package (32-QFN) and output configuration. Confirm the BOM position against the datasheet before substituting.

What compliance documentation does Analog Devices provide for LTC3727LXEUH-1#PBF?

The part is listed with a Bulk package and is from Analog Devices. Standard documentation includes RoHS compliance data and a material declaration sheet. For specific REACH or UL certificates, request them at RFQ time — they are not pre-loaded in this listing.