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LM21215

Texas Instruments
Part Number LM21215
Manufacturer Texas Instruments
Description Voltage-Mode Synchronous Buck Regulator
Published Dec 18, 2020
Detailed Description LM21215 SNVS625G – FEBRUARY 2011 – REVISED MARCH 2022 LM21215 2.95-V to 5.5-V, 12-A, Voltage-Mode Synchronous Buck Regul...
Datasheet PDF File LM21215 PDF File

LM21215
LM21215

Overview
LM21215 SNVS625G – FEBRUARY 2011 – REVISED MARCH 2022 LM21215 2.
95-V to 5.
5-V, 12-A, Voltage-Mode Synchronous Buck Regulator 1 Features • Integrated 7-mΩ high-side and 4.
3-mΩ low-side FET switches • Adjustable current limit • Adjustable output voltage from 0.
6 V to VIN (100% duty cycle capable), ±1% reference • 2.
95-V to 5.
5-V input voltage range • 500-kHz fixed switching frequency • Start-up into prebiased loads • Output voltage tracking capability • Wide bandwidth voltage loop error amplifier • Adjustable soft start with external capacitor • Precision enable pin with hysteresis • Integrated OVP, OTP, UVLO, and power good • Thermally enhanced 20-pin HTSSOP exposed pad package • Create a custom design using the LM21215 with the WEBENCH® Power Designer 2 Applications • Broadband, networking, and wireless communications • High-performance FPGAs, ASICs, and microprocessors • Simple-to-design, high-efficiency point-of-load regulation from a 5-V or 3.
3-V bus efficiency.
The device is optimized to work over an input voltage range of 2.
95 V to 5.
5 V, making it suitable for a wide variety of low voltage systems.
The voltage mode control loop provides high noise immunity, narrow duty cycle capability and can be compensated to be stable with any type of output capacitance, providing maximum flexibility and ease of use.
The LM21215 features internal overvoltage protection (OVP) and resistor-programmable overcurrent protection (OCP) for increased system reliability.
A precision enable pin and integrated UVLO allow turn-on of the device to be tightly controlled and sequenced.
Start-up inrush currents are limited by both an internally fixed and externally adjustable softstart circuit.
Fault detection and supply sequencing are possible with the integrated power good circuit.
The LM21215 is designed to work well in multi-rail power supply architectures.
The output voltage of the device can be configured to track an external voltage rail using the SS/TRK pin.
If the output is preb...


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