Development Boards, Kits, Programmers

LM3679TL-1.8EV

Obsolete

Texas Instruments

BOARD EVALUATION LM3679TL-1.8

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Development Boards, Kits, Programmers

LM3679TL-1.8EV

Obsolete

Texas Instruments

BOARD EVALUATION LM3679TL-1.8

Deep-Dive with AI

DocumentsDatasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM3679TL-1.8EV

Board Type	Fully Populated
Current - Output	350 mA
Frequency - Switching	3 MHz
Main Purpose	DC/DC, Step Down
Outputs and Type	Non-Isolated
Outputs and Type	1
Regulator Topology	Buck
Supplied Contents	Board(s)
Utilized IC / Part	LM3679
Voltage - Input [Max]	5.5 V
Voltage - Input [Min]	2.5 V
Voltage - Output	1.8 V

LM3679 Series

3MHz, 350mA Miniature Step-Down DC-DC Converter for Ultra Low Profile Applications

Part	Outputs and Type	Outputs and Type	Utilized IC / Part	Regulator Topology	Supplied Contents	Main Purpose	Current - Output	Voltage - Output	Frequency - Switching	Voltage - Input [Min]	Voltage - Input [Max]	Board Type	Output Type	Number of Outputs	Voltage - Output (Min/Fixed)	Function	Mounting Type	Voltage - Input (Min) [Min]	Output Configuration	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Package / Case	Supplier Device Package	Voltage - Input (Max) [Max]
Texas Instruments LM3679TL-1.8EV	Non-Isolated	1	LM3679	Buck	Board(s)	DC/DC Step Down	350 mA	1.8 V	3 MHz	2.5 V	5.5 V	Fully Populated
Texas Instruments LM3679UR-1.2/NOPB							350 mA		3 MHz				1.81 mOhm	1	1.2 V	Step-Down	Surface Mount	2.5 V	Positive	-30 °C	85 °C	Buck	5-XFBGA DSBGA	5-DSBGA (1.47x1.02)	5.5 V
Texas Instruments LM3679UR-1.5/NOPB							350 mA		3 MHz				1.81 mOhm	1	1.5 V	Step-Down	Surface Mount	2.5 V	Positive	-30 °C	85 °C	Buck	5-XFBGA DSBGA	5-DSBGA (1.47x1.02)	5.5 V
Texas Instruments LM3679TL-1.8/NOPB							350 mA		3 MHz				1.81 mOhm	1	1.8 V	Step-Down	Surface Mount	2.5 V	Positive	-30 °C	85 °C	Buck		5-DSBGA (1.41x1.08)	5.5 V
Texas Instruments LM3679UR-1.8/NOPB							350 mA		3 MHz				1.81 mOhm	1	1.8 V	Step-Down	Surface Mount	2.5 V	Positive	-30 °C	85 °C	Buck	5-XFBGA DSBGA	5-DSBGA (1.47x1.02)	5.5 V
Texas Instruments LM3679URX-1.8/NOPB							350 mA		3 MHz				1.81 mOhm	1	1.8 V	Step-Down	Surface Mount	2.5 V	Positive	-30 °C	85 °C	Buck	5-XFBGA DSBGA	5-DSBGA (1.47x1.02)	5.5 V
Texas Instruments LM3679URX-1.2/NOPB							350 mA		3 MHz				1.81 mOhm	1	1.2 V	Step-Down	Surface Mount	2.5 V	Positive	-30 °C	85 °C	Buck	5-XFBGA DSBGA	5-DSBGA (1.47x1.02)	5.5 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Box	1	$ 157.34

Description

General part information

LM3679 Series

The LM3679 step-down DC-DC converter is optimized for powering ultra-low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.5V to 5.5V. It provides up to 350mA load current, over the entire input voltage range. The LM3679 output voltage can be configured to 1.2V, 1.5V, or 1.8V.

The device offers superior features and performance for mobile phones and similar portable applications with complex power management systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode operation, the device operates at a fixed-frequency of 3 MHz (typ). PWM mode drives loads from ~ 80mA to 350mA max. Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typ) during light load and standby operation. Internal synchronous rectification provides high efficiency. In shutdown mode (Enable pin pulled low), the device turns off and reduces battery consumption to 0.01 µA (typ).

The LM3679 is available in a lead-free (No PB) 5-bump micro SMD package, 0.6mm height, and in an ultra thin 0.3mm height UR package. Using the UR package along with specific external components, allows for a low profile solution size with a max height of 0.55mm. A switching frequency of 3 MHz (typ) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor and two ceramic capacitors, are required. .

Documents

Technical documentation and resources