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Analog Devices LTC3704EMS#PBF — Analog & Data Acquisition

LTC3704EMS#PBF Cuk Controller, 50kHz-1MHz, 10-MSOP

MPNLTC3704EMS#PBF
End of Life

Analog Devices LTC3704EMS#PBF, Cuk DC/DC controller, 50kHz-1MHz switching frequency, 2.5V-36V supply, single output, negative output configuration, 92% max duty cycle, 10-MSOP package, Tube.

$6.64Ref. price · indicative, final on quote
Packaging10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LTC3704EMS#PBF specifications
ParameterValue
Output typeTransistor Driver
MountingSurface Mount
Voltage - supply (Vcc (Vdd))2.5V ~ 36V
Frequency50kHz ~ 1MHz
I/O channels1
Output phases1
Duty cycle92%
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionStep-Up/Step-Down
TopologyCuk
Clock syncYes
Case10-TFSOP, 10-MSOP (0.118\", 3.00mm Width)
Control featuresEnable, Frequency Control
Output configurationNegative
Synchronous rectifierNo

Product details

Cuk controller for negative rails

The LTC3704EMS#PBF is a Cuk topology controller producing a regulated negative output from a positive input. It operates step-up/step-down and drives an external N-channel MOSFET with a switching frequency adjustable from 50 kHz to 1 MHz.

Supply range and frequency flexibility

The supply voltage (Vcc) range of 2.5 V to 36 V covers common rails. The 92% maximum duty cycle gives headroom for large step-down ratios. The switching frequency range is 50 kHz to 1 MHz and can be synchronized to an external clock.

The part is ROHS3 compliant.

Control and output configuration

The controller provides a single transistor-driver output configured for a negative output voltage. Control features include Enable and Frequency Control, allowing the designer to shut down the regulator or adjust the switching frequency with an external resistor. Synchronous rectification is not supported, so the external Schottky diode handles the catch function.

Frequently asked questions

What is the switching frequency range of LTC3704EMS#PBF?

The switching frequency is adjustable from 50 kHz to 1 MHz, and the part supports external clock synchronization.

What are the alternatives to LTC3704EMS#PBF?

A functional alternative is the LTC1871EMS#PBF, which also operates from a 2.5 V supply and supports clock sync, but it uses boost, flyback, or SEPIC topologies rather than Cuk, and its output can be configured as positive or negative.