Integrated Circuits (ICs)

LM3677TL-1.2/NOPB

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CONV DC-DC 2.7V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 1.2V 0.6A 5-PIN DSBGA T/R

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Search across all available documentation for this part.

Documents3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits datasheet (Rev. F)AN-1595 LM3677 Evaluation Board (Rev. C)

Integrated Circuits (ICs)

LM3677TL-1.2/NOPB

Active

Texas Instruments

CONV DC-DC 2.7V TO 5.5V SYNCHRONOUS STEP DOWN SINGLE-OUT 1.2V 0.6A 5-PIN DSBGA T/R

Deep-Dive with AI

Documents3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits datasheet (Rev. F)AN-1595 LM3677 Evaluation Board (Rev. C)

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM3677TL-1.2/NOPB

Current - Output	600 mA
Frequency - Switching	3 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-30 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Supplier Device Package	5-DSBGA (1.41x1.08)
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Min/Fixed)	1.2 V

LM3677 Series

Part	Supplier Device Package	Current - Output	Number of Outputs	Voltage - Input (Min) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Output Configuration	Output Type	Package / Case	Frequency - Switching	Topology	Voltage - Output (Min/Fixed)	Function	Mounting Type	Voltage - Input (Max) [Max]	Output Type	Voltage - Output (Max) [Max]	Voltage - Input [Min]	Voltage - Input [Max]	Main Purpose	Voltage - Output	Board Type	Regulator Topology	Supplied Contents	Outputs and Type	Outputs and Type	Utilized IC / Part
Texas Instruments LM3677LEE-1.2/NOPB	6-USON (2x1.5)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm	6-UFDFN	3 MHz	Buck	1.2 V	Step-Down	Surface Mount	5.5 V
Texas Instruments LM3677LEE-1.8/NOPB	6-USON (2x1.5)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm	6-UFDFN	3 MHz	Buck	1.8 V	Step-Down	Surface Mount	5.5 V
Texas Instruments LM3677TL-1.8/NOPB	5-DSBGA (1.41x1.08)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm		3 MHz	Buck	1.8 V	Step-Down	Surface Mount	5.5 V
Texas Instruments LM3677LEX-1.5/NOPB	6-USON (2x1.5)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm	6-UFDFN	3 MHz	Buck	1.5 V	Step-Down	Surface Mount	5.5 V
Texas Instruments LM3677TL-1.2/NOPB	5-DSBGA (1.41x1.08)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm		3 MHz	Buck	1.2 V	Step-Down	Surface Mount	5.5 V
Texas Instruments LM3677TLX-ADJ/NOPB	5-DSBGA (1.41x1.08)	600 mA	1	2.7 V	-30 °C	85 °C	Positive			3 MHz	Buck	1.2 V	Step-Down	Surface Mount	5.5 V	Adjustable	3.3 V
Texas Instruments LM3677LE-1.8EV		600 mA								3 MHz								2.7 V	5.5 V	DC/DC Step Down	1.8 V	Fully Populated	Buck	Board(s)	Non-Isolated	1	LM3677
Texas Instruments LM3677TL-1.8EV		600 mA								3 MHz								2.7 V	5.5 V	DC/DC Step Down	1.8 V	Fully Populated	Buck	Board(s)	Non-Isolated	1	LM3677
Texas Instruments LM3677TL-2.5/NOPB	5-DSBGA (1.41x1.08)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm		3 MHz	Buck	2.5 V	Step-Down	Surface Mount	5.5 V
Texas Instruments LM3677TLX-1.2/NOPB	5-DSBGA (1.41x1.08)	600 mA	1	2.7 V	-30 °C	85 °C	Positive	1.81 mOhm		3 MHz	Buck	1.2 V	Step-Down	Surface Mount	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	$

Arrow	N/A	250	$ 1.39
		500	$ 1.37
		1000	$ 1.36
		3000	$ 1.35
Digikey	Cut Tape (CT)	1	$ 1.59
		10	$ 1.43
		25	$ 1.35
		100	$ 1.15
	Digi-Reel®	1	$ 1.59
		10	$ 1.43
		25	$ 1.35
		100	$ 1.15
	Tape & Reel (TR)	250	$ 1.08
		500	$ 0.95
		1250	$ 0.78
		2500	$ 0.73
		6250	$ 0.70
		12500	$ 0.68
Texas Instruments	SMALL T&R	1	$ 1.20
		100	$ 0.99
		250	$ 0.71
		1000	$ 0.54

Description

General part information

LM3677 Series

The LM3677 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 2.7V to 5.5V. It provides up to 600 mA load current over the entire input voltage range. The LM3677 is configured to different fixed voltage output options as well as an adjustable output voltage version range from 1.2V to 3.3V.

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 ~ 80 mA to 600 mA 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 down), the device turns off and reduces battery consumption to 0.01 µA (typ.).

The LM3677 is available in a lead-free (NOPB) 5-bump DSBGA package and 6-pin USON package. 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

3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits datasheet (Rev. F)

Data sheet

AN-1595 LM3677 Evaluation Board (Rev. C)

EVM User's guide