2MHz, 600mA Step-Down DC-DC Converter in SOT 23-5
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range From 2.7 V to 5.5 V
- 600-mA Maximum Load Current
- Available in Fixed and Adjustable Output Voltages
Ranging From 1 V to 3.3 V - Operates From a Single Li-Ion Cell Battery
- Internal Synchronous Rectification for High
Efficiency - Internal Soft-Start
- 0.01-µA Typical Shutdown Current
- 2-MHz PWM Fixed Switching Frequency (typical)
- Current Overload Protection and Thermal
Shutdown Protection
Description
The LM3674 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 fixed output voltages and adjustable output voltage versions.
The device offers superior features and performance for mobile phones and similar portable systems. During the Pulse Width Modulation (PWM) mode, the device operates at a fixed-frequency of 2 MHz (typical). Internal synchronous rectification provides high efficiency during the PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typical).
The LM3674 is available in a 5-pin SOT-23 package. A high switching frequency of 2 MHz (typical) allows use of only three tiny external surface-mount components, an inductor and two ceramic capacitors.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM3674 2-MHz, 600-mA Step-Down DC-DC Converter in SOT-23 datasheet (Rev. G) | Apr. 24, 2015 |
Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
Application note | A Topical Index of TI Low Power Buck DC/DC Application Notes | Jan. 17, 2018 | |
User guide | 2-Port USB 3.0 Hub (TIDA-00287) | Aug. 01, 2014 | |
User guide | AN-1427 LM3674 Evaluation Board (Rev. K) | Apr. 30, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LM3674 evaluation board is a working demonstration of a step down DC-DC converter. The application note contains information about the evaluation board. The LM3674 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails (...)
Features
- 600mA max load current
- Input voltage range from 2.7V to 5.5V
- Available in fixed and adjustable output voltages ranging from 1.0V to 3.3V
- Operates from a single Li-Ion cell Battery
- Internal synchronous rectification for high efficiency
- Internal soft start
- 0.01 microA typical shutdown current
- 2 MHz PWM fixed (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
The hub design provides power control (...)
Design files
-
download TIDA-00287 BOM.pdf (223KB) -
download TIDA-00287 Layer Plots.zip (988KB) -
download TIDA-00287 CAD Files.zip (90KB) -
download TIDA-00287 Gerber.zip (390KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-23 (DBV) | 5 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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