LT8609AEDDM-3.3#PBF

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Analog Devices

42V, 3A SYNCHRONOUS STEP-DOWN REGULATOR WITH 2.5ΜA QUIESCENT CURRENT

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DocumentsDatasheet Package Drawing - 10-Lead DFN (3mm x 3mm, Plastic Side Wettable)+2

LT8609AEDDM-3.3#PBF

Active

Analog Devices

42V, 3A SYNCHRONOUS STEP-DOWN REGULATOR WITH 2.5ΜA QUIESCENT CURRENT

Deep-Dive with AI

DocumentsDatasheet Package Drawing - 10-Lead DFN (3mm x 3mm, Plastic Side Wettable)+2

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT8609AEDDM-3.3#PBF

Current - Output	3 A
Frequency - Switching [Max]	2.2 MHz
Frequency - Switching [Min]	200 kHz
Function	Step-Down
Mounting Type	Wettable Flank, Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	10-WFDFN Exposed Pad
Supplier Device Package	10-DFN (3x3)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	42 V
Voltage - Input (Min) [Min]	3 V
Voltage - Output (Min/Fixed)	3.3 V

LT8609LT8609ALT8609B Series

42V, 3A Synchronous Step-Down Regulator with 2.5µA Quiescent Current

Part	Frequency - Switching [Max]	Frequency - Switching [Min]	Number of Outputs	Voltage - Output (Min/Fixed)	Function	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Supplier Device Package	Output Type	Voltage - Input (Min) [Min]	Current - Output	Topology	Output Configuration	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed) [Min]	Output Type	Voltage - Output (Max) [Max]	Package / Case
Analog Devices LT8609AJDDM-3.3#TRPBF	2.2 MHz	200 kHz	1	3.3 V	Step-Down	10-WFDFN Exposed Pad	150 °C	-40 °C	Surface Mount Wettable Flank	10-DFN (3x3)	1.81 mOhm	3 V	3 A	Buck	Positive	42 V
Analog Devices LT8609SIV#TRPBF	2.2 MHz	200 kHz	1		Step-Down	16-TFQFN Exposed Pad	125 ¯C	-40 °C	Surface Mount	16-LQFN (3x3)		3 V	2 A	Buck	Positive	42 V	0.782 V	Adjustable	42 V
Analog Devices LT8609AJDDM-3.3#PBF	2.2 MHz	200 kHz	1	3.3 V	Step-Down	10-WFDFN Exposed Pad	150 °C	-40 °C	Surface Mount Wettable Flank	10-DFN (3x3)	1.81 mOhm	3 V	3 A	Buck	Positive	42 V
Analog Devices LT8609AEDDM-3.3#PBF	2.2 MHz	200 kHz	1	3.3 V	Step-Down	10-WFDFN Exposed Pad	125 ¯C	-40 °C	Surface Mount Wettable Flank	10-DFN (3x3)	1.81 mOhm	3 V	3 A	Buck	Positive	42 V
Analog Devices LT8609AJMSE16#TRPBF	2.2 MHz	200 kHz	1		Step-Down	16-TFSOP Exposed Pad	150 °C	-40 °C	Surface Mount	16-MSOP-EP		3 V	3 A	Buck	Positive	42 V	0.782 V	Adjustable	42 V	0.118 in 3 mm
Analog Devices LT8609AEDDM#PBF	2.2 MHz	200 kHz	1		Step-Down	10-WFDFN Exposed Pad	125 ¯C	-40 °C	Surface Mount Wettable Flank	10-DFN (3x3)		3 V	3 A	Buck	Positive	42 V	0.782 V	Adjustable	42 V
Analog Devices LT8609AJMSE16#PBF	2.2 MHz	200 kHz	1		Step-Down	16-TFSOP Exposed Pad	150 °C	-40 °C	Surface Mount	16-MSOP-EP		3 V	3 A	Buck	Positive	42 V	0.782 V	Adjustable	42 V	0.118 in 3 mm
Analog Devices LT8609SEV#TRPBF	2.2 MHz	200 kHz	1		Step-Down	16-TFQFN Exposed Pad	125 ¯C	-40 °C	Surface Mount	16-LQFN (3x3)		3 V	2 A	Buck	Positive	42 V	0.782 V	Adjustable	42 V
Analog Devices LT8609AEDDM-3.3#TRPBF	2.2 MHz	200 kHz	1	3.3 V	Step-Down	10-WFDFN Exposed Pad	125 ¯C	-40 °C	Surface Mount Wettable Flank	10-DFN (3x3)	1.81 mOhm	3 V	3 A	Buck	Positive	42 V
Analog Devices LT8609AIMSE#TRA1PBF	2.2 MHz	200 kHz	1		Step-Down	10-MSOP 10-TFSOP Exposed Pad	125 ¯C	-40 °C	Surface Mount	10-MSOP-EP		2.7 V	3 A	Buck	Positive	42 V	0.782 V	Adjustable	42 V	0.118 in 3 Lead

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	$ 9.02
		10	$ 6.23
		25	$ 5.51
		100	$ 4.70
		250	$ 4.31
		500	$ 4.08
		1000	$ 3.88
		2500	$ 3.76
Newark	Each	1	$ 8.64
		10	$ 5.82
		25	$ 5.08
		50	$ 4.77
		100	$ 4.46
		250	$ 4.15
		500	$ 3.76

Description

General part information

LT8609LT8609ALT8609B Series

The LT8609/LT8609A/LT8609B is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of nonswitching quiescent current. The LT8609/LT8609A/LT8609B can deliver 3A of continuous current. Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock, or spread spectrum modulation for low EMI operation. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VINUVLO or to shut down the part. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up while the PG flag signals when VOUTis within ±8.5% on the adjustable output parts or ±7.5% on the fixed output parts of the programmed output voltage as well as fault conditions. The LT8609A has slower switch edges for lower EMI emissions. The LT8609B operates in pulse-skipping mode only.Pulse-Skipping Mode, Burst Mode OperationSwitch Edge SpeedLT8609BothFastLT8609ABothMediumLT8609BPulse-SkippingFastApplicationsGSM TransceiversGeneral Purpose Step-DownLow EMI Step-Down

Documents

Technical documentation and resources

Datasheet

Package Drawing - 10-Lead DFN (3mm x 3mm, Plastic Side Wettable)

Package Drawing

LT8609/LT8609A/LT8609B: 42V, 3A Synchronous Step-Down Regulator with 2.5µA Quiescent Current Data Sheet (Rev.J)

Data Sheet

R570 Reliability Data

Reliability Data