LM3671MF-ADJ/NOPB Part Information

Details for LM3671MF-ADJ/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part 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 lownoise 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.

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Part Features

  • 0.01-u00b5A Typical Shutdown Current
  • 16-u00b5A Typical Quiescent Current
  • 2-MHz PWM Fixed Switching Frequency (Typical)
  • 600-mA Maximum Load Capability
  • AEC Q100-Qualified With the Following Results u2013 Device Temperature Grade 1: u201340u00b0C to +125u00b0C Ambient Operating Temperature Range
  • Automatic PFM-PWM Mode Switching
  • Available in Fixed Output Voltages and Adjustable
  • Current Overload and Thermal Shutdown Protection
  • Internal Soft Start
  • Internal Synchronous Rectification for High Efficiency
  • LM3671-Q1 is Qualified for Automotive Applications
  • Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
  • Operates from a Single Li-Ion Cell Battery

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 2.7V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case SOT-23
No. of Pins 5Pins
Output Current 600mA
Output Voltage Min 1.1V
Output Voltage Max 3.3V
Switching Frequency 2MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Adjustable Output Voltage Max 3.3V
Adjustable Output Voltage Min 1.1V
Base Number 3671
Frequency 2MHz
Logic Function Number 3671
Operating Temperature Min -30°C
Operating Temperature Range -25°C to +85°C
Primary Input Voltage 5.5V
Supply Voltage Min 2.7V
Switch Output Current Isw Max 1.15A
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • Step-down switching reg.,LM3671MF-ADJ | RS Components
  • 2MHz, 600mA Step-Down DC-DC Converter | Texas Instruments
  • DC/DC Converter [Texas Instruments] LM3671MF-ADJ/NOPB DC/DC Converter | Distrelec

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