LM26420-Q1 Series

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

Catalog

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

Catalog

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

Key Features

• Qualified for automotive applicationsAEC Q100-qualified with the following results:Device temperature grade 0 (Q0): –40°C to +150°C ambient operating temperatureDevice temperature grade 1 (Q1): –40°C to +125°C ambient operating temperatureFunctional Safety-CapableDocumentation available to aid functional safety system designCompliant with CISPR25 class 5 conducted emissionsInput voltage range of 3V to 5.5VOutput voltage range of 0.8V to 4.5V2A output current per regulatorFixed 2.2MHz switching frequency0.8V, 1.5% Internal voltage referenceInternal soft startIndependent power good and precision enable for each outputCurrent mode, PWM operationThermal shutdownOvervoltage protectionStart-up into prebiased output loadsRegulators are 180° out of phaseCreate a custom design using the LM26420-Q1 with theWEBENCH Power DesignerQualified for automotive applicationsAEC Q100-qualified with the following results:Device temperature grade 0 (Q0): –40°C to +150°C ambient operating temperatureDevice temperature grade 1 (Q1): –40°C to +125°C ambient operating temperatureFunctional Safety-CapableDocumentation available to aid functional safety system designCompliant with CISPR25 class 5 conducted emissionsInput voltage range of 3V to 5.5VOutput voltage range of 0.8V to 4.5V2A output current per regulatorFixed 2.2MHz switching frequency0.8V, 1.5% Internal voltage referenceInternal soft startIndependent power good and precision enable for each outputCurrent mode, PWM operationThermal shutdownOvervoltage protectionStart-up into prebiased output loadsRegulators are 180° out of phaseCreate a custom design using the LM26420-Q1 with theWEBENCH Power Designer

Description

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. 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.