LM22676 Voltage Regulator

Texas Instruments' 3 A SIMPLE SWITCHER® step-down voltage regulator with precision enable

LM22676 Voltage RegulatorTexas Instruments' LM22676 switching regulator provides all of the functions necessary to implement an efficient, high-voltage step-down (buck) regulator using a minimum of external components. This easy-to-use regulator incorporates a 42 V, N-channel MOSFET switch capable of providing up to 3 A of load current. Excellent line and load regulation, along with high efficiency (>90%), are featured. Voltage-mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5 V output and adjustable output voltage options are available.

A switching frequency of 500 kHz allows for small external components and good transient response. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode, the regulator draws only 25 µA (typ.). Built-in soft-start (500 µs, typ.) saves external components. The LM22676 also has built in thermal shutdown, and current limiting to protect against accidental overloads.

Features Applications
  • Wide input voltage range: 4.5 V to 42 V
  • Internally compensated voltage mode control
  • Stable with low ESR ceramic capacitors
  • 120 mΩ N-channel MOSFET PFM package
  • 100 mΩ N-channel MOSFET PSOP-8 package
  • SO PowerPAD (exposed pad)
  • PFM (exposed pad)

LM22676 Voltage Regulator

ImageManufacturer Part NumberDescriptionAvailable Quantity
LM22676TJ-5.0/NOPB datasheet linkIC REG BUCK 5V 3A TO263-7LM22676TJ-5.0/NOPBIC REG BUCK 5V 3A TO263-71561 - Immediate
10000 - Factory Stock
LM22676TJ-5.0/NOPB product page link
LM22676MRE-5.0/NOPB datasheet linkIC REG BUCK 5V 3A 8SOPWRPADLM22676MRE-5.0/NOPBIC REG BUCK 5V 3A 8SOPWRPAD4503 - Immediate
500 - Factory Stock
LM22676MRE-5.0/NOPB product page link
7030 - Factory Stock
LM22676MR-ADJ/NOPB product page link
LM22676MR-5.0/NOPB datasheet linkIC REG BUCK 5V 3A 8SOPWRPADLM22676MR-5.0/NOPBIC REG BUCK 5V 3A 8SOPWRPAD1040 - Immediate
LM22676MR-5.0/NOPB product page link
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Published: 2013-05-20