LM3677LE-1.8/NOPB

Obsolete

Texas Instruments

IC REG BUCK 1.8V 600MA 6USON

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LM3677LE-1.8/NOPB

Obsolete

Texas Instruments

IC REG BUCK 1.8V 600MA 6USON

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Description Specifications Series Pricing CAD Documents

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.

Technical Specifications

Parameters and characteristics for this part

Specification	LM3677LE-1.8/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	Fixed
Package / Case	6-UFDFN
Package Length	2 mm
Package Name	6-USON
Package Width	1.5 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Input (Max)	5.5 V
Voltage - Input (Min)	2.7 V
Voltage - Output (Min/Fixed)	1.8 V

LM3677 Series

3MHz, 600mA Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits

Part	Output Type	Number of Outputs	Voltage - Input (Max)	Synchronous Rectifier	Output Configuration	Mounting Type	Current - Output	Topology	Package / Case	Voltage - Input (Min)	Frequency - Switching	Operating Temperature (Max)	Operating Temperature (Min)	Voltage - Output (Min/Fixed)	Package Name	Package Length	Package Width	Function	Voltage - Output (Max)
Texas Instruments LM3677LE-1.8/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	6-UFDFN	2.7 V	3 MHz	85 °C	-30 °C	1.8 V	6-LLP	2 mm	1.5 mm	Step-Down
Texas Instruments LM3677LEE-1.2/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	6-UFDFN	2.7 V	3 MHz	85 °C	-30 °C	1.2 V	6-USON	2 mm	1.5 mm	Step-Down
Texas Instruments LM3677TL-1.2	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	5-WFBGA DSBGA	2.7 V	3 MHz	85 °C	-30 °C	1.2 V	5-DSBGA	1.5 mm	1.2 mm	Step-Down
Texas Instruments LM3677LEE-1.8/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	6-UFDFN	2.7 V	3 MHz	85 °C	-30 °C	1.8 V	6-USON	2 mm	1.5 mm	Step-Down
Texas Instruments LM3677TL-1.8/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	5-WFBGA DSBGA	2.7 V	3 MHz	85 °C	-30 °C	1.8 V	5-DSBGA	1.41 mm	1.08 mm	Step-Down
Texas Instruments LM3677LEX-1.5/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	6-UFDFN	2.7 V	3 MHz	85 °C	-30 °C	1.5 V	6-USON	2 mm	1.5 mm	Step-Down
Texas Instruments LM3677TL-1.2/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	5-WFBGA DSBGA	2.7 V	3 MHz	85 °C	-30 °C	1.2 V	5-DSBGA	1.41 mm	1.08 mm	Step-Down
Texas Instruments LM3677TLX-ADJ/NOPB	Adjustable	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	5-WFBGA DSBGA	2.7 V	3 MHz	85 °C	-30 °C	1.2 V	5-DSBGA	1.41 mm	1.08 mm	Step-Down	3.3 V
Texas Instruments LM3677TL-ADJ/NOPB	Adjustable	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	5-WFBGA DSBGA	2.7 V	3 MHz	85 °C	-30 °C	1.2 V	5-DSBGA	1.41 mm	1.08 mm	Step-Down	3.3 V
Texas Instruments LM3677LE-1.5/NOPB	Fixed	1	5.5 V	Yes	Positive	Surface Mount	600 mA	Buck	6-UFDFN	2.7 V	3 MHz	85 °C	-30 °C	1.5 V	6-USON	2 mm	1.5 mm	Step-Down

Pricing

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CAD

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