Integrated Circuits (ICs)

LM21212AMHE-1/NOPB

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Texas Instruments

IC REG BUCK ADJ 12A 20HTSSOP

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Integrated Circuits (ICs)

LM21212AMHE-1/NOPB

Active

Texas Instruments

IC REG BUCK ADJ 12A 20HTSSOP

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Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM21212AMHE-1/NOPB

Current - Output	12 A
Frequency - Switching	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	20-PowerTSSOP
Package / Case	0.173 in
Package / Case [custom]	4.4 mm
Supplier Device Package	20-HTSSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.95 V
Voltage - Output (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	0.6 V

LM21212-1 Series

2.95-5.5V, 12A, Voltage Mode Synchronous Buck Regulator with Frequency Synchronization

Part	Current - Output	Mounting Type	Output Type	Output Configuration	Voltage - Input (Max) [Max]	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Function	Number of Outputs	Voltage - Input (Min) [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Voltage - Output (Min/Fixed)	Package / Case	Package / Case [custom]	Package / Case	Voltage - Output (Max) [Max]	Supplier Device Package	Frequency - Switching	Main Purpose	Supplied Contents	Voltage - Output	Outputs and Type	Outputs and Type	Board Type	Utilized IC / Part	Regulator Topology
Texas Instruments LM21212MH-2/NOPB	12 A	Surface Mount	Adjustable	Positive	5.5 V	Buck	-40 °C	125 ¯C	Step-Down	1	2.95 V	1.55 MHz	300 kHz	0.6 V	20-PowerTSSOP	4.4 mm	0.173 in	5.5 V	20-HTSSOP
Texas Instruments LM21212MHX-2/NOPB	12 A	Surface Mount	Adjustable	Positive	5.5 V	Buck	-40 °C	125 ¯C	Step-Down	1	2.95 V	1.55 MHz	300 kHz	0.6 V	20-PowerTSSOP	4.4 mm	0.173 in	5.5 V	20-HTSSOP
Texas Instruments LM21212MHX-1/NOPB	12 A	Surface Mount	Adjustable	Positive	5.5 V	Buck	-40 °C	125 ¯C	Step-Down	1	2.95 V			0.6 V	20-PowerTSSOP	4.4 mm	0.173 in	5.5 V	20-HTSSOP	1 MHz
Texas Instruments LM21212-1EVM/NOPB	12 A											1.5 MHz	300 kHz								DC/DC Step Down	Board(s)	1.2 V	Non-Isolated	1	Fully Populated	LM21212-1	Buck
Texas Instruments LM21212MH-1/NOPB	12 A	Surface Mount	Adjustable	Positive	5.5 V	Buck	-40 °C	125 ¯C	Step-Down	1	2.95 V			0.6 V	20-PowerTSSOP	4.4 mm	0.173 in	5.5 V	20-HTSSOP	1 MHz
Texas Instruments LM21212-1EVM	12 A											1.5 MHz	300 kHz								DC/DC Step Down	Board(s)	1.2 V	Non-Isolated	1	Fully Populated	LM21212-1	Buck
Texas Instruments LM21212AMHE-1/NOPB	12 A	Surface Mount	Adjustable	Positive	5.5 V	Buck	-40 °C	125 ¯C	Step-Down	1	2.95 V			0.6 V	20-PowerTSSOP	4.4 mm	0.173 in	5.5 V	20-HTSSOP	1 MHz
Texas Instruments LM21212AMHX-1/NOPB	12 A	Surface Mount	Adjustable	Positive	5.5 V	Buck	-40 °C	125 ¯C	Step-Down	1	2.95 V			0.6 V	20-PowerTSSOP	4.4 mm	0.173 in	5.5 V	20-HTSSOP	1 MHz

Pricing

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

Distributor	Package	Quantity	$

Description

General part information

LM21212-1 Series

The LM21212-1 is a monolithic synchronous point-of-load buck regulator that is capable of delivering up to 12 A of continuous output current while producing an output voltage down to 0.6 V with outstanding efficiency. The device is optimized to work over an input voltage range of 2.95 V to 5.5 V, making it suited for a wide variety of low voltage systems. The voltage mode control loop provides high noise immunity, narrow duty-cycle capability and can be compensated to be stable with any type of output capacitance, providing maximum flexibility and ease of use.

The LM21212-1 features internal overvoltage protection (OVP) and overcurrent protection (OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turnon of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable soft-start circuit. Fault detection and supply sequencing are possible with the integrated power good circuit.

The LM21212-1 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track an external voltage rail using the SS/TRK pin. The switching frequency can be synchronized to the falling edge of a clock between frequencies of 300 kHz to 1.5 MHz.

Documents

Technical documentation and resources