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2.95-5.5V, 12A, Voltage Mode Synchronous Buck Regulator with Frequency Synchronization

Inventory: 49,750  

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
HTSSOP (PWP) | 20 250 | SMALL T&R
Package | Pins HTSSOP (PWP) | 20
Package qty | Carrier: 250 | SMALL T&R
Operating temperature range (°C)
View TI packaging information

Features for the LM21212-1

  • Integrated 7-mΩ high-side and 4.3-mΩ low-side FET switches
  • 300-kHz to 1.5-MHz frequency SYNC pin
  • Adjustable output voltage from 0.6 V to VIN (100% duty cycle capable), ±1% reference
  • Input voltage range 2.95 V to 5.5 V
  • Start-up Into prebiased loads
  • Output voltage tracking capability
  • Wide bandwidth voltage loop error amplifier
  • Adjustable soft-start with external capacitor
  • Precision enable (EN) pin with hysteresis
  • Integrated OVP, OCP, OTP, UVLO and power-good
  • Thermally enhanced HTSSOP-20 exposed pad package
  • Create a custom design using the LM21212-1 with the WEBENCH® Power Designer

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Description for the LM21212-1

The LM21212-1 is a monolithic synchronous point-of-load buck regulator that is capable ofdelivering up to 12 A of continuous output current while producing an output voltage down to 0.6 Vwith outstanding efficiency. The device is optimized to work over an input voltage range of 2.95 Vto 5.5 V, making it suited for a wide variety of low voltage systems. The voltage mode control loopprovides high noise immunity, narrow duty-cycle capability and can be compensated to be stable withany type of output capacitance, providing maximum flexibility and ease of use.

The LM21212-1 features internal overvoltage protection (OVP) and overcurrent protection(OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turnon ofthe device to be tightly controlled and sequenced. Start-up inrush currents are limited by both aninternally fixed and externally adjustable soft-start circuit. Fault detection and supplysequencing are possible with the integrated power good circuit.

The LM21212-1 is designed to work well in multi-rail power supply architectures. Theoutput voltage of the device can be configured to track an external voltage rail using the SS/TRKpin. The switching frequency can be synchronized to the falling edge of a clock between frequenciesof 300 kHz to 1.5 MHz.

If the output is prebiased at start-up, it does not sink current, allowing the output tosmoothly rise past the prebiased voltage. The regulator is offered in a 20-pin HTSSOP package withan exposed pad that can be soldered to the PCB, eliminating the need for bulky heat sinks.


Qty Price (USD)
1-99 4.974
100-249 4.055
250-999 3.187
1,000+ 2.703

Additional package qty | carrier options

Package qty | Carrier 73 | TUBE
Inventory 13,147
Qty | Price (USD) 1ku | 2.82 1-99 5.189 100-249 4.23 250-999 3.325 1,000+ 2.82

Package qty | Carrier 2,500 | LARGE T&R
Inventory 33,868
Qty | Price (USD) 1ku | 2.35 1-99 4.324 100-249 3.525 250-999 2.771 1,000+ 2.35
Custom reel may be available