LM2734Z-Q1 Series

3 to 20 V input, 1 A, high frequency automotive step-down converter with light load efficiency

Catalog

3 to 20 V input, 1 A, high frequency automotive step-down converter with light load efficiency

Part	Output Configuration	Supplier Device Package	Package / Case	Voltage - Output (Min/Fixed)	Topology	Current - Output	Output Type	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]	Frequency - Switching	Mounting Type	Number of Outputs	Function	Voltage - Input (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]	Grade	Qualification	Voltage - Input [Min]	Voltage - Input [Max]	Board Type	Supplied Contents	Voltage - Output	Utilized IC / Part	Regulator Topology	Outputs and Type	Outputs and Type	Main Purpose
Texas Instruments LM2734YMKX	Positive	SOT-23-THIN	SOT-23-6 Thin TSOT-23-6	0.8 V	Buck	1 A	Adjustable	18 V	3 V	550 kHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C
Texas Instruments LM2734YMK	Positive	SOT-23-THIN	SOT-23-6 Thin TSOT-23-6	0.8 V	Buck	1 A	Adjustable	18 V	3 V	550 kHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C
Texas Instruments LM2734YMKX/NOPB	Positive	SOT-23-THIN	SOT-23-6 Thin TSOT-23-6	0.8 V	Buck	1 A	Adjustable	18 V	3 V	550 kHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C
Texas Instruments LM2734ZQMKX/NOPB	Positive	TSOT-23-6	SOT-23-6 Thin TSOT-23-6	0.8 V	Buck	1 A	Adjustable	18 V	3 V	3 MHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C	Automotive	AEC-Q100
Texas Instruments LM2734ZQSDE/NOPB	Positive	6-WSON (3x3)		0.8 V	Buck	1 A	Adjustable	18 V	3 V	3 MHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C	Automotive	AEC-Q100
Texas Instruments LM2734Y EVAL						1 A				550 kHz									3 V	20 V	Fully Populated	Board(s)	1.8 V	LM2734	Buck	Non-Isolated	1	DC/DC Step Down
Texas Instruments LM2734XQMK/NOPB	Positive	SOT-23-THIN	SOT-23-6 Thin TSOT-23-6	0.8 V	Buck	1 A	Adjustable	18 V	3 V	1.6 MHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C	Automotive	AEC-Q100
Texas Instruments LM2734ZSD	Positive	6-WSON (3x3)		0.8 V	Buck	1 A	Adjustable	18 V	3 V	3 MHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C
Texas Instruments LM2734ZQSDX/NOPB	Positive	6-WSON (3x3)		0.8 V	Buck	1 A	Adjustable	18 V	3 V	3 MHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C	Automotive	AEC-Q100
Texas Instruments LM2734XMKX/NOPB	Positive	SOT-23-THIN	SOT-23-6 Thin TSOT-23-6	0.8 V	Buck	1 A	Adjustable	18 V	3 V	1.6 MHz	Surface Mount	1	Step-Down	20 V	-40 °C	125 ¯C

Catalog

3 to 20 V input, 1 A, high frequency automotive step-down converter with light load efficiency

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to 125°CAmbient Operating Temperature RangeDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C66-pin SOT Package, or 6-Pin WSON Package3.0-V to 20-V Input Voltage Range0.8-V to 18-V Output Voltage Range1-A Output Current3-MHz Switching Frequency300-mΩ NMOS Switch30-nA Shutdown Current0.8-V, 2% Internal Voltage ReferenceInternal Soft-StartCurrent-Mode, PWM OperationThermal ShutdownQualified for Automotive ApplicationsAEC-Q100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to 125°CAmbient Operating Temperature RangeDevice HBM ESD Classification Level 2Device CDM ESD Classification Level C66-pin SOT Package, or 6-Pin WSON Package3.0-V to 20-V Input Voltage Range0.8-V to 18-V Output Voltage Range1-A Output Current3-MHz Switching Frequency300-mΩ NMOS Switch30-nA Shutdown Current0.8-V, 2% Internal Voltage ReferenceInternal Soft-StartCurrent-Mode, PWM OperationThermal Shutdown

Description

The LM2734-Q1 regulator is a monolithic, high-frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT package. The device provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components and online design support through WEBENCH, the LM2734-Q1 regulator is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world-class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734-Q1 regulator uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection. The LM2734-Q1 regulator is a monolithic, high-frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT package. The device provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components and online design support through WEBENCH, the LM2734-Q1 regulator is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world-class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2734-Q1 regulator uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.