LTC3544EUD#PBF

Active

Analog Devices

QUAD SYNCHRONOUS STEP-DOWN REGULATOR: 2.25MHZ, 300MA, 200MA, 200MA, 100MA

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsR415 Reliability Data Datasheet

LTC3544EUD#PBF

Active

Analog Devices

QUAD SYNCHRONOUS STEP-DOWN REGULATOR: 2.25MHZ, 300MA, 200MA, 200MA, 100MA

Deep-Dive with AI

DocumentsR415 Reliability Data Datasheet

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC3544EUD#PBF

Current - Output	200 mA, 100 mA, 300 mA
Frequency - Switching	2.25 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	4
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	16-WFQFN Exposed Pad
Supplier Device Package	16-QFN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.25 V
Voltage - Output (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	0.8 V

LTC3544B Series

Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA

Part	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Output Configuration	Function	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Package / Case	Voltage - Output (Min/Fixed)	Frequency - Switching	Supplier Device Package	Number of Outputs	Current - Output	Topology	Output Type
Analog Devices LTC3544BEUD#PBF	5.5 V	2.25 V	5.5 V	Positive	Step-Down	85 °C	-40 °C	Surface Mount	16-WFQFN Exposed Pad	0.8 V	2.25 MHz	16-QFN (3x3)	4	100 mA 200 mA 300 mA	Buck	Adjustable
Analog Devices LTC3544EUD#PBF	5.5 V	2.25 V	5.5 V	Positive	Step-Down	85 °C	-40 °C	Surface Mount	16-WFQFN Exposed Pad	0.8 V	2.25 MHz	16-QFN (3x3)	4	100 mA 200 mA 300 mA	Buck	Adjustable
Analog Devices LTC3544BEUD#TRPBF	5.5 V	2.25 V	5.5 V	Positive	Step-Down	85 °C	-40 °C	Surface Mount	16-WFQFN Exposed Pad	0.8 V	2.25 MHz	16-QFN (3x3)	4	100 mA 200 mA 300 mA	Buck	Adjustable

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	$ 10.22
		10	$ 7.11
		25	$ 6.31
		100	$ 5.41
		250	$ 4.98
		500	$ 4.72
		1000	$ 4.50

Description

General part information

LTC3544B Series

The LTC3544B is a quad, high efficiency, monolithic synchronous buck regulator using a constant frequency, current mode architecture. The four regulators operate independently with separate run pins. The 2.25V to 5.5V input voltage range makes the LTC3544B well suited for single Li-Ion/polymer battery-powered applications. 100% duty cycle provides low dropout operation, extending battery runtime in portable systems. At moderate and low output load levels PWM pulse skip mode operation provides very low output ripple voltage for noise sensitive applications.Switching frequency is internally set to 2.25MHz, allowing the use of small surface mount inductors and capacitors.The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported with the 0.8V feedback reference voltage.The LTC3544B is available in a low profile (0.75mm) (3mm × 3mm) QFN package.Light Load OperationLTC3544Burst Mode (20mVpp), < 70uA IqLTC3544BPulse Skip ModeApplicationsCellular TelephonesPersonal Information AppliancesWireless and DSL ModemsDigital Still CamerasMedia PlayersPortable Instruments