LTC3785EUF#PBF

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Analog Devices

10V, HIGH EFFICIENCY, SYNCHRONOUS, NO RSENSEBUCK-BOOST CONTROLLER

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LTC3785EUF#PBF

Active

Analog Devices

10V, HIGH EFFICIENCY, SYNCHRONOUS, NO RSENSEBUCK-BOOST CONTROLLER

Deep-Dive with AI

DocumentsDatasheet R533 Reliability Data

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3785EUF#PBF

Clock Sync	False
Control Features	Current Limit, Soft Start, Enable
Duty Cycle (Max) [Max]	99 %
Frequency - Switching [Max]	1 MHz
Frequency - Switching [Min]	100 kHz
Function	Step-Up/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	1
Output Type	Transistor Driver
Package / Case	24-WFQFN Exposed Pad
Supplier Device Package	24-QFN (4x4)
Synchronous Rectifier	True
Topology	Buck-Boost
Voltage - Supply (Vcc/Vdd) [Max]	10 V
Voltage - Supply (Vcc/Vdd) [Min]	2.7 V

LTC3785-1 Series

10V, High Efficiency, Buck-Boost Controller with Power Good

Part	Frequency - Switching [Max]	Frequency - Switching [Min]	Supplier Device Package	Function	Number of Outputs	Package / Case	Output Type	Duty Cycle (Max) [Max]	Topology	Mounting Type	Control Features	Output Phases	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices LTC3785EUF-1#TRPBF	1 MHz	100 kHz	24-QFN (4x4)	Step-Up/Step-Down	2	24-WFQFN Exposed Pad	Transistor Driver	99 %	Buck-Boost	Surface Mount	Current Limit Enable Soft Start	1	2.7 V	10 V	Positive	85 °C	-40 °C
Analog Devices LTC3785IUF	1 MHz	100 kHz	24-QFN (4x4)	Step-Up/Step-Down	2	24-WFQFN Exposed Pad	Transistor Driver	99 %	Buck-Boost	Surface Mount	Current Limit Enable Soft Start	1	2.7 V	10 V	Positive	125 ¯C	-40 °C
Analog Devices LTC3785EUF#PBF	1 MHz	100 kHz	24-QFN (4x4)	Step-Up/Step-Down	2	24-WFQFN Exposed Pad	Transistor Driver	99 %	Buck-Boost	Surface Mount	Current Limit Enable Soft Start	1	2.7 V	10 V	Positive	85 °C	-40 °C
Analog Devices LTC3785EUF-1#PBF	1 MHz	100 kHz	24-QFN (4x4)	Step-Up/Step-Down	2	24-WFQFN Exposed Pad	Transistor Driver	99 %	Buck-Boost	Surface Mount	Current Limit Enable Soft Start	1	2.7 V	10 V	Positive	85 °C	-40 °C
Analog Devices LTC3785EUF-1	1 MHz	100 kHz	24-QFN (4x4)	Step-Up/Step-Down	2	24-WFQFN Exposed Pad	Transistor Driver	99 %	Buck-Boost	Surface Mount	Current Limit Enable Soft Start	1	2.7 V	10 V	Positive	85 °C	-40 °C

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	$ 10.04
		10	$ 7.05
		25	$ 6.28
		100	$ 5.42
		250	$ 5.33

Description

General part information

LTC3785-1 Series

The LTC3785-1 is a high power synchronous buck-boost controller that drives all N-channel power MOSFETs from input voltages above, below and equal to the output voltage. With an input range of 2.7V to 10V, the LTC3785-1 is well suited for a wide variety of single or dual cell Li-Ion or multi-cell alkaline/NiMH applications.The operating frequency can be programmed from 100kHz to 1MHz. The soft-start time and current limit are also programmable. The soft-start capacitor doubles as the fault timer which can program the IC to latch off or recycle after a determined off time. Burst Mode operation is user controlled and can be enabled by driving the MODE pin high. The LTC3785-1 includes a Power Good output that indicates when the output voltage is within 7.5% of its designed setpoint.Protection features include foldback current limit, short-circuit and overvoltage protection.Power GoodLTC3785NoLTC3785-1YesApplicationsPalmtop ComputersHandheld InstrumentsWireless ModemsCellular Telephones