LM2621MMX/NOPB

Active

Texas Instruments

1.2V TO 14V INPUT VOLTAGE, 1A LOAD CURRENT, STEP-UP DC-DC

Find alt

Alpha

LM2621MMX/NOPB

Active

Texas Instruments

1.2V TO 14V INPUT VOLTAGE, 1A LOAD CURRENT, STEP-UP DC-DC

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LM2621 Series

The LM2621 is a high efficiency, step-up DC-DC switching regulator for battery-powered and low input voltage systems. It accepts an input voltage between 1.2 V and 14 V and converts it into a regulated output voltage. The output voltage can be adjusted between 1.24 V and 14 V. It has an internal 0.17-Ω N-Channel MOSFET power switch. Efficiencies up to 90% are achievable using the LM2621.

The high switching frequency (adjustable up to 2 MHz) of the LM2621 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80 µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5 µA.

The LM2621 is available in a VSSOP-8 package. This package uses half the board area of a standard 8-pin SOIC and has a height of just 1.09 mm.

Technical Specifications

Parameters and characteristics for this part

Specification	LM2621MMX/NOPB

Current - Output	2.85 A
Frequency - Switching (Max)	2 MHz
Frequency - Switching (Min)	300 kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package Length	0.118 in
Package Name	8-VSSOP, 8-TSSOP, 8-MSOP
Package Width	3 mm
Synchronous Rectifier	No
Topology	SEPIC, Boost
Voltage - Input (Max)	14 V
Voltage - Input (Min)	1.2 V
Voltage - Output (Max)	14 V
Voltage - Output (Min/Fixed)	1.24 V

LM2621 Series

Part	Synchronous Rectifier	Voltage - Input (Min)	Current - Output	Voltage - Output (Min/Fixed)	Number of Outputs	Voltage - Output (Max)	Output Configuration	Voltage - Input (Max)	Output Type	Package Name	Function	Mounting Type	Topology	Package Width	Package Length	Operating Temperature (Max)	Operating Temperature (Min)	Frequency - Switching (Max)	Frequency - Switching (Min)	Board Type	Supplied Contents	Total Output Count	Non-Isolated Output Count	Utilized IC / Part	Regulator Topology	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Main Purpose	Contents
Texas Instruments LM2621MMX/NOPB	No	1.2 V	2.85 A	1.24 V	1	14 V	Positive	14 V	Adjustable	8-TSSOP 8-MSOP 8-VSSOP	Step-Up Step-Up/Step-Down	Surface Mount	Boost SEPIC	3 mm	0.118 in	85 °C	-40 °C	2 MHz	300 kHz
Texas Instruments LM2621MM/NOPB	No	1.2 V	2.85 A	1.24 V	1	14 V	Positive	14 V	Adjustable	8-TSSOP 8-MSOP 8-VSSOP	Step-Up Step-Up/Step-Down	Surface Mount	Boost SEPIC	3 mm	0.118 in	85 °C	-40 °C	2 MHz	300 kHz
Texas Instruments LM2621EVAL/NOPB									Non-Isolated											Fully Populated	Board(s)	1	1 count	LM2621	Boost	1.2 V	14 V	DC/DC Step Up	Board
Texas Instruments LM2621MMX/NOPB	No	1.2 V	2.85 A	1.24 V	1	14 V	Positive	14 V	Adjustable	8-TSSOP 8-MSOP 8-VSSOP	Step-Up Step-Up/Step-Down	Surface Mount	Boost SEPIC	3 mm	0.118 in	85 °C	-40 °C	2 MHz	300 kHz
Texas Instruments LM2621EVAL									Non-Isolated											Fully Populated	Board(s)	1	1 count	LM2621	Boost	1.2 V	14 V	DC/DC Step Up	Board
Texas Instruments LM2621MMX	No	1.2 V	2.85 A	1.24 V	1	14 V	Positive	14 V	Adjustable	8-TSSOP 8-MSOP 8-VSSOP	Step-Up Step-Up/Step-Down	Surface Mount	Boost SEPIC	3 mm	0.118 in	85 °C	-40 °C	2 MHz	300 kHz

Pricing

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

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LM2621 Low Input Voltage, Step-Up DC-DC Converter datasheet (Rev. D)

Die D/S LM2621 MWC Low Input Voltage, Step-Up Dc-Dc