LM26420Q1XSQ/NOPB

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Texas Instruments

DUAL 2 A, AUTOMOTIVE-QUALIFIED, HIGH-EFFICIENCY SYNCHRONOUS DC/DC CONVERTER

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DocumentsBuild a sub-20W CISPR25 Class 5 power design for automotive infotainment processor Buck Converter Quick Reference Guide (Rev. B)+7

LM26420Q1XSQ/NOPB

Active

Texas Instruments

DUAL 2 A, AUTOMOTIVE-QUALIFIED, HIGH-EFFICIENCY SYNCHRONOUS DC/DC CONVERTER

Deep-Dive with AI

DocumentsBuild a sub-20W CISPR25 Class 5 power design for automotive infotainment processor Buck Converter Quick Reference Guide (Rev. B)+7

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM26420Q1XSQ/NOPB

Current - Output	2 A
Frequency - Switching	2.2 MHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	16-WQFN Exposed Pad
Qualification	AEC-Q100
Supplier Device Package	16-WQFN (4x4)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	3 V
Voltage - Output (Max) [Max]	4.5 V
Voltage - Output (Min/Fixed)	0.8 V

LM26420-Q1 Series

Dual 2 A, automotive-qualified, high-efficiency synchronous DC/DC converter

Part	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Output Type	Function	Package / Case	Output Configuration	Current - Output	Grade	Voltage - Input (Max) [Max]	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Topology	Qualification	Frequency - Switching	Mounting Type	Board Type	Regulator Topology	Utilized IC / Part	Supplied Contents	Outputs and Type	Outputs and Type	Voltage - Input [Max]	Voltage - Input [Min]	Main Purpose	Package / Case [custom]	Package / Case
Texas Instruments LM26420Q1XSQ/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	16-WQFN Exposed Pad	Positive	2 A	Automotive	5.5 V	2	-40 °C	125 ¯C	16-WQFN (4x4)	Buck	AEC-Q100	2.2 MHz	Surface Mount
Texas Instruments LM26420YSQEVAL/NOPB								2 A									550 kHz		Fully Populated	Buck	LM26420	Board(s)	2	Non-Isolated	5.5 V	3 V	DC/DC Step Down
Texas Instruments LM26420Q1XMHX/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	20-PowerTSSOP	Positive	2 A	Automotive	5.5 V	2	-40 °C	125 ¯C	20-HTSSOP	Buck	AEC-Q100	2.2 MHz	Surface Mount										4.4 mm	0.173 in
Texas Instruments LM26420YSQ/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	16-WQFN Exposed Pad	Positive	2 A		5.5 V	2	-40 °C	125 ¯C	16-WQFN (4x4)	Buck		550 kHz	Surface Mount
Texas Instruments LM26420XMH/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	20-PowerTSSOP	Positive	2 A		5.5 V	2	-40 °C	125 ¯C	20-HTSSOP	Buck		2.2 MHz	Surface Mount										4.4 mm	0.173 in
Texas Instruments LM26420XMHX/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	20-PowerTSSOP	Positive	2 A		5.5 V	2	-40 °C	125 ¯C	20-HTSSOP	Buck		2.2 MHz	Surface Mount										4.4 mm	0.173 in
Texas Instruments LM26420Q0XMHX/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	20-PowerTSSOP	Positive	2 A	Automotive	5.5 V	2	-40 °C	150 °C	20-HTSSOP	Buck	AEC-Q100	2.2 MHz	Surface Mount										4.4 mm	0.173 in
Texas Instruments LM26420YMHX/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	20-PowerTSSOP	Positive	2 A		5.5 V	2	-40 °C	125 ¯C	20-HTSSOP	Buck		550 kHz	Surface Mount										4.4 mm	0.173 in
Texas Instruments LM26420YSQX/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	16-WQFN Exposed Pad	Positive	2 A		5.5 V	2	-40 °C	125 ¯C	16-WQFN (4x4)	Buck		550 kHz	Surface Mount
Texas Instruments LM26420Q0XMH/NOPB	4.5 V	0.8 V	3 V	Adjustable	Step-Down	20-PowerTSSOP	Positive	2 A	Automotive	5.5 V	2	-40 °C	150 °C	20-HTSSOP	Buck	AEC-Q100	2.2 MHz	Surface Mount										4.4 mm	0.173 in

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.58
		10	$ 3.21
		25	$ 3.04
		100	$ 2.63
		250	$ 2.50
		500	$ 2.24
	Digi-Reel®	1	$ 3.58
		10	$ 3.21
		25	$ 3.04
		100	$ 2.63
		250	$ 2.50
		500	$ 2.24
	Tape & Reel (TR)	1000	$ 1.89
		2000	$ 1.79
		3000	$ 1.82
		5000	$ 1.73
Texas Instruments	SMALL T&R	1	$ 2.46
		100	$ 2.00
		250	$ 1.57
		1000	$ 1.34

Description

General part information

LM26420-Q1 Series

The LM26420-Q1 regulator is a monolithic, high-efficiency dual PWM step-down DC/DC converter. This device has the ability to drive two 2A loads with an internal 75mΩ MOS top switch and an internal 50mΩ MOS bottom switch using state-of-the-art BICMOS technology results in the best power density available. The world-class control circuitry allow on times as low as 30ns, thus supporting exceptionally high-frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.8V.

Although the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current. The LM26420-Q1 uses current-mode control and internal compensation to provide high performance regulation over a wide range of operating conditions.

Because the switching frequency is made sure to be greater than 2MHz, the LM26420-Q1 can be used in automotive applications without causing interference in the AM frequency band.