UCC3585D

LTB

Texas Instruments

LOW VOLTAGE SYNCHRONOUS BUCK CONTROLLER

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DocumentsDatasheet Low Voltage Synchronous Buck Controller datasheet (Rev. F)

UCC3585D

LTB

Texas Instruments

LOW VOLTAGE SYNCHRONOUS BUCK CONTROLLER

Deep-Dive with AI

DocumentsDatasheet Low Voltage Synchronous Buck Controller datasheet (Rev. F)

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	UCC3585D

Clock Sync	False
Control Features	Enable, Soft Start, Frequency Control, Current Limit
Duty Cycle (Max) [Max]	100 %
Frequency - Switching	500 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 C
Operating Temperature [Min]	0 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	5.5 V
Voltage - Supply (Vcc/Vdd) [Min]	3 V

UCC3585 Series

Part	Output Type	Package / Case	Package / Case	Package / Case	Output Configuration	Topology	Control Features	Frequency - Switching	Function	Number of Outputs	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Supplier Device Package	Output Phases	Duty Cycle (Max) [Max]	Mounting Type	Operating Temperature [Max]	Package / Case [x]	Package / Case [y]
Texas Instruments UCC3585N	Transistor Driver	0.3 in	16-DIP	7.62 mm	Positive	Buck	Current Limit Enable Frequency Control Soft Start	500 kHz	Step-Down	1	5.5 V	3 V	16-PDIP	1	100 %	Through Hole	85 C
Texas Instruments UCC3585MTR	Transistor Driver	0.154 in	16-SSOP	3.9 mm	Positive	Buck	Current Limit Enable Frequency Control Soft Start	500 kHz	Step-Down	1	5.5 V	3 V	16-SSOP	1	100 %	Surface Mount	85 C
Texas Instruments UCC3585D	Transistor Driver		16-SOIC		Positive	Buck	Current Limit Enable Frequency Control Soft Start	500 kHz	Step-Down	1	5.5 V	3 V	16-SOIC	1	100 %	Surface Mount	85 C	0.154 in	3.9 mm
Texas Instruments UCC3585M	Transistor Driver	0.154 in	16-SSOP	3.9 mm	Positive	Buck	Current Limit Enable Frequency Control Soft Start	500 kHz	Step-Down	1	5.5 V	3 V	16-SSOP	1	100 %	Surface Mount	85 C
Texas Instruments UCC3585DG4	Transistor Driver		16-SOIC		Positive	Buck	Current Limit Enable Frequency Control Soft Start	500 kHz	Step-Down	1	5.5 V	3 V	16-SOIC	1	100 %	Surface Mount	85 C	0.154 in	3.9 mm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	280	$ 3.53
Texas Instruments	TUBE	1	$ 3.81
		100	$ 3.10
		250	$ 2.44
		1000	$ 2.07

Description

General part information

UCC3585 Series

The UCC3585 synchronous buck controller provides flexible high efficiency power conversion for output voltages as low as 0.9 V with ensured ±1% dc accuracy. With an input voltage range of 3.0 V to 5.5 V, it is the ideal choice for 3.3 V only, 5.0 V only, or other low voltage systems. The fixed frequency oscillator is capable of providing practical PWM operation to 500 kHz.

The UCC3585 drives a complementary pair of power MOSFET transistors. A P-channel on the high side, and an N-channel on the low side step down the input voltage at up to 90% efficiency.

A programmable two-level current limiting function is provided by sensing the voltage drop across the high side P-channel MOSFET. This circuit can be configured to provide pulse-by-pulse limiting, timed shutdown after seven consecutive faults, or latch-off after fault detection, allowing maximum application flexibility. The current limit threshold can be programmed over a wide range with a single resistor.