Texas Instruments LM3743
The LM3743 is a DC-DC voltage mode PWM buck controller featuring synchronous rectification at 300 kHz or 1 MHz. It can deliver current as high as 20A and step down from an input voltage between 3V and 5.5V down to a minimum output voltage of 0.8V, with a ±1.75% internal reference accuracy. The LM3743 provides a set of comprehensive fault protection features such as high-side current limit, output undervoltage protection, and low-side current limit.| Part No. | LM3743 |
|---|---|
| Datasheet | LM3743 Download |
| Manufacturer |  Texas Instruments |
| Description | PWM Buck Controller |
| Buy | Stock & Price |
FEATURES
Check for Samples: LM3743FEATURES
1●2 Input Voltage From 3.0V to 5.5V
● Output Voltage Adjustable Down to 0.8V
● Reference Accuracy: ±1.75%, over Full Temperature and Input Voltage Range
● High-Side and Low-Side N-Channel MOSFETs
● Switching Frequency Options of 1 MHz or 300 kHz
● Comprehensive Fault Protection
FEATURES
: – High-Side Current Limit – Low-Side Current Limit – Output Under-Voltage Protection● Hiccup Mode Protection Eliminates Thermal Runaway During Fault Conditions
● Externally Programmable Soft-Start with Tracking Capability
● Pre-Bias Start-Up Capability
● VSSOP-10 Package
DESCRIPTION
When any of these fault protection features are engaged, it enters a hiccup protection mode which is suitable for high reliability systems such as rack mounted servers and telecom base station subsystems. The LM3743 also employs a proprietary monolithic glitch free prebias start-up method suited for FPGA and ASIC logic devices. An external programmable soft-start allows for tracking and timing flexibility.
