LM3671-Q1 Series

2MHz, 600mA Step-Down DC-DC Converter

Catalog

2MHz, 600mA Step-Down DC-DC Converter

Part	Voltage - Input (Max) [Max]	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Output Configuration	Voltage - Output (Min/Fixed)	Topology	Voltage - Input (Min) [Min]	Current - Output	Mounting Type	Output Type	Function	Package / Case	Frequency - Switching	Grade	Qualification	Voltage - Output (Min/Fixed) [Min]	Voltage - Output (Max) [Max]	Output Type
Texas Instruments LM3671MFX-1.875	5.5 V	SOT-23-5	85 °C	-40 °C	1	Positive	1.875 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	SC-74A SOT-753	2 MHz
Texas Instruments LM3671MFX-1.6	5.5 V	SOT-23-5	85 °C	-40 °C	1	Positive	1.6 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	SC-74A SOT-753	2 MHz
Texas Instruments LM3671QTL-1.8/NOPB	5.5 V	5-DSBGA (1.41x1.08)	85 °C	-40 °C	1	Positive	1.8 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down		2 MHz	Automotive	AEC-Q100
Texas Instruments LM3671LC-1.8	5.5 V	6-USON (2x2)	85 °C	-40 °C	1	Positive	1.8 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	6-UFDFN	2 MHz
Texas Instruments LM3671MF-1.375	5.5 V	SOT-23-5	85 °C	-40 °C	1	Positive		Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	SC-74A SOT-753	2 MHz			1.375 V
Texas Instruments LM3671MF-2.5/NOPB	5.5 V	SOT-23-5	85 °C	-40 °C	1	Positive	2.5 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	SC-74A SOT-753	2 MHz
Texas Instruments LM3671LC-1.8/NOPB	5.5 V	6-USON (2x2)	85 °C	-40 °C	1	Positive	1.8 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	6-UFDFN	2 MHz
Texas Instruments LM3671MF-1.375/NOPB	5.5 V	SOT-23-5	85 °C	-40 °C	1	Positive		Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down	SC-74A SOT-753	2 MHz			1.375 V
Texas Instruments LM3671MF-ADJ/NOPB	5.5 V	SOT-23-5	85 °C	-40 °C	1	Positive	1.1 V	Buck	2.7 V	600 mA	Surface Mount		Step-Down	SC-74A SOT-753	2 MHz				3.3 V	Adjustable
Texas Instruments LM3671TL-2.8/NOPB	5.5 V	5-DSBGA (1.41x1.08)	85 °C	-40 °C	1	Positive	2.8 V	Buck	2.7 V	600 mA	Surface Mount	1.81 mOhm	Step-Down		2 MHz

Catalog

2MHz, 600mA Step-Down DC-DC Converter

Key Features

• LM3671-Q1 is Qualified for Automotive ApplicationsAEC Q100-Qualified With the Following ResultsDevice Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range16-µA Typical Quiescent Current600-mA Maximum Load Capability2-MHz PWM Fixed Switching Frequency (Typical)Automatic PFM-PWM Mode SwitchingInternal Synchronous Rectification for High EfficiencyInternal Soft Start0.01-µA Typical Shutdown CurrentOperates from a Single Li-Ion Cell BatteryOnly Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)Current Overload and Thermal Shutdown ProtectionAvailable in Fixed Output Voltages and Adjustable VersionLM3671-Q1 is Qualified for Automotive ApplicationsAEC Q100-Qualified With the Following ResultsDevice Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range16-µA Typical Quiescent Current600-mA Maximum Load Capability2-MHz PWM Fixed Switching Frequency (Typical)Automatic PFM-PWM Mode SwitchingInternal Synchronous Rectification for High EfficiencyInternal Soft Start0.01-µA Typical Shutdown CurrentOperates from a Single Li-Ion Cell BatteryOnly Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)Current Overload and Thermal Shutdown ProtectionAvailable in Fixed Output Voltages and Adjustable Version

Description

The LM3671 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version range from 1.1 V to 3.3 V. The device offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical). A high-switching frequency of 2 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor, and two ceramic capacitors, are required. The LM3671 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7 V to 5.5 V. It provides up to 600-mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version range from 1.1 V to 3.3 V. The device offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low-noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typical). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typical) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical). A high-switching frequency of 2 MHz (typical) allows use of tiny surface-mount components. Only three external surface-mount components, an inductor, and two ceramic capacitors, are required.