LM21215AMHE-1/NOPB

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Texas Instruments

2.95-5.5V, 15A, VOLTAGE MODE SYNCHRONOUS BUCK REGULATOR WITH FREQUENCY SYNCHRONIZATION

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LM21215AMHE-1/NOPB

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Texas Instruments

2.95-5.5V, 15A, VOLTAGE MODE SYNCHRONOUS BUCK REGULATOR WITH FREQUENCY SYNCHRONIZATION

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Description Specifications Series Pricing CAD Documents

Description

General part information

LM21215 Series

The LM21215A is a synchronous buck DC-DC converter that delivers up to 15 A of output current at output voltages as low as 0.6 V. Operating over an input voltage range of 2.95 V to 5.5 V with ultra-high efficiency, the LM21215A suits a wide variety of low voltage systems. The voltage-mode control loop with high gain-bandwidth error amplifier provides high noise immunity, narrow duty cycle capability and is easily compensated for stable operation with any type of output capacitor, providing maximum flexibility and ease of use.

The LM21215A features internal overvoltage protection (OVP) and cycle-by-cycle overcurrent protection (OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turn-on of the device to be tightly controlled and sequenced. Startup inrush currents are limited by an internally-fixed or externally-adjustable soft-start circuit. An integrated open-drain PGOOD indicator provides fault reporting and supply sequencing.

Other features include auxiliary voltage rail tracking, monotonic startup into pre-biased loads, and switching frequency synchronization to an external clock signal between 300 kHz and 1.5 MHz for beat-frequency sensitive and multi-regulator applications. The LM21215A is offered in a thermally-enhanced 20-pin HTSSOP package with an exposed pad that is soldered to the PCB to achieve a very low junction-to-board thermal impedance.

Technical Specifications

Parameters and characteristics for this part

Specification	LM21215AMHE-1/NOPB

Current - Output	15 A
Frequency - Switching	500 kHz
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 Length	0.173 in
Package Name	20-HTSSOP, 20-PowerTSSOP
Package Width	4.4 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.95 V
Voltage - Output (Max)	5.5 V
Voltage - Output (Min/Fixed)	0.6 V

LM21215 Series

2.95-5.5V, 15A, Voltage Mode Synchronous Buck Regulator with Adjustable Frequency

Part	Board Type	Total Output Count	Output Type	Isolated Output Count	Supplied Contents	Regulator Topology	Main Purpose	Voltage - Output	Utilized IC / Part	Frequency - Switching	Voltage - Input (Maximum)	Voltage - Input (Minimum)	Contents	Current - Output	Voltage - Output (Min/Fixed)	Number of Outputs	Function	Topology	Voltage - Input (Min)	Synchronous Rectifier	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Input (Max)	Mounting Type	Package Name	Package Length	Package Width	Voltage - Output (Max)	Output Configuration	Package Features	Non-Isolated Output Count
Texas Instruments LM21215EVM/NOPB	Fully Populated	1	Isolated	1	Board(s)	Buck	DC/DC Step Down	1.2 V	LM21215	500 kHz	5.5 V	2.95 V	Board	15 A
Texas Instruments LM21215AMHE-1/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-PowerTSSOP	0.173 in	4.4 mm	5.5 V	Positive
Texas Instruments LM21215MH/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-PowerTSSOP	0.173 in	4.4 mm	5.5 V	Positive
Texas Instruments LM21215MH/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-TSSOP	0.173 in	4.4 mm	5.5 V	Positive	Exposed Pad
Texas Instruments LM21215AMHX-1/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-PowerTSSOP	0.173 in	4.4 mm	5.5 V	Positive
Texas Instruments LM21215MHX/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-PowerTSSOP	0.173 in	4.4 mm	5.5 V	Positive
Texas Instruments LM21215A-1EVM/NOPB	Fully Populated	1	Non-Isolated		Board(s)	Buck	DC/DC Step Down	1.2 V	LM21215A-1		5.5 V	2.95 V	Board	15 A																	1 count
Texas Instruments LM21215MHE/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-TSSOP	0.173 in	4.4 mm	5.5 V	Positive	Exposed Pad
Texas Instruments LM21215AMH-1/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-PowerTSSOP	0.173 in	4.4 mm	5.5 V	Positive
Texas Instruments LM21215MHE/NOPB			Adjustable							500 kHz				15 A	0.6 V	1	Step-Down	Buck	2.95 V	Yes	125 °C	-40 °C	5.5 V	Surface Mount	20-HTSSOP 20-PowerTSSOP	0.173 in	4.4 mm	5.5 V	Positive

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

AN-2176 LM10010 Evaluation Board (Rev. B)

AN-2131 LM21215A-1 Evaluation Board (Rev. A)

LM21215A 2.95-V to 5.5-V,15-A, Voltage-Mode Synchronous Buck Converter With Frequency Synchronization datasheet (Rev. D)

Power Management Guide 2018 (Rev. R)