MIC29150/29300/29500/29750 Series

High current, low dropout regulators with extremely fast transient response

MIC29150, 29300, 29500 and 29750 SeriesMicrochip's MIC29150, 29300, 29500, and 29750 series are high current, high accuracy, low-dropout voltage regulators. Using Microchip's proprietary Super βeta PNP® process with a PNP pass element, these regulators feature 350 mV to 425 mV (full load) typical dropout voltages and very low ground current. Designed for high current loads, these devices also find applications in lower current, extremely low dropout-critical systems where their tiny dropout voltage and ground current values are important attributes.

The MIC29150, 29300, 29500, and 29750 are fully protected against over-current faults, reversed input polarity, reversed lead insertion, over-temperature operation, and transient voltage spikes. Five pin fixed voltage versions feature logic level ON/OFF control and an error flag that signals whenever the output falls outside of regulation. Flagged states include low input voltage (dropout), output current limit, over-temperature shutdown, and extremely high voltage spikes on the input.

On the MIC29xx1 and MIC29xx2, the ENABLE pin may be tied to VIN if it is not required for ON/OFF control. The MIC29150, 29300, and 29500 are available in 3-pin and 5-pin TO-220 and surface mount TO-263 (D2Pak) packages. The MIC29750 7.5 A regulators are available in 3-pin and 5-pin TO-247 packages. The 1.5 A adjustable output MIC29152 is available in a 5-pin power D-Pak (TO-252) package.

  • High current capability
    • MIC29150: 1.5 A
    • MIC29300: 3 A
    • MIC29500: 5 A
    • MIC29750: 7.5 A
  • Low-dropout voltage
  • Low ground current
  • Accurate 1% guaranteed tolerance
  • Extremely fast transient response
  • Reverse-battery and "Load Dump" protection
  • Zero-current shutdown mode (5-pin versions)
  • Error flag signals output out-of-regulation (5-pin versions)
  • Also characterized for smaller loads with industry-leading performance specifications
  • Fixed voltage and adjustable versions
  • Battery powered equipment
  • High-efficiency "Green" computer systems
  • Automotive electronics
  • High-efficiency linear lower supplies
  • High-efficiency lost-regulator for switching supply


ImageManufacturer Part NumberDescriptionAvailable Quantity
MIC29300-5.0WU datasheet linkIC REG LDO 5V 3A TO263-3MIC29300-5.0WUIC REG LDO 5V 3A TO263-32884 - Immediate
MIC29300-5.0WU product page link
MIC29300-3.3WT datasheet linkIC REG LDO 3.3V 3A TO220-3MIC29300-3.3WTIC REG LDO 3.3V 3A TO220-32249 - Immediate
MIC29300-3.3WT product page link
MIC29300-12WT datasheet linkIC REG LDO 12V 3A TO220-3MIC29300-12WTIC REG LDO 12V 3A TO220-31010 - Immediate
MIC29300-12WT product page link
MIC29150-5.0WU datasheet linkIC REG LDO 5V 1.5A TO263-3MIC29150-5.0WUIC REG LDO 5V 1.5A TO263-33388 - Immediate
MIC29150-5.0WU product page link
MIC29150-3.3WU datasheet linkIC REG LDO 3.3V 1.5A TO263-3MIC29150-3.3WUIC REG LDO 3.3V 1.5A TO263-31150 - Immediate
MIC29150-3.3WU product page link
MIC29300-12WU datasheet linkIC REG LDO 12V 3A TO263-3MIC29300-12WUIC REG LDO 12V 3A TO263-3805 - Immediate
MIC29300-12WU product page link
MIC29300-5.0WT datasheet linkIC REG LDO 5V 3A TO220-3MIC29300-5.0WTIC REG LDO 5V 3A TO220-32450 - Immediate
MIC29300-5.0WT product page link
MIC29300-3.3WU datasheet linkIC REG LDO 3.3V 3A TO263-3MIC29300-3.3WUIC REG LDO 3.3V 3A TO263-3874 - Immediate
MIC29300-3.3WU product page link
MIC29150-5.0WT datasheet linkIC REG LDO 5V 1.5A TO220-3MIC29150-5.0WTIC REG LDO 5V 1.5A TO220-3664 - Immediate
MIC29150-5.0WT product page link
MIC29150-12WT datasheet linkIC REG LDO 12V 1.5A TO220-3MIC29150-12WTIC REG LDO 12V 1.5A TO220-3579 - Immediate
MIC29150-12WT product page link
MIC29500-3.3WT datasheet linkIC REG LDO 3.3V 5A TO220-3MIC29500-3.3WTIC REG LDO 3.3V 5A TO220-32418 - Immediate
MIC29500-3.3WT product page link
MIC29500-5.0WT datasheet linkIC REG LDO 5V 5A TO220-3MIC29500-5.0WTIC REG LDO 5V 5A TO220-3232 - Immediate
MIC29500-5.0WT product page link
MIC29150-12WU datasheet linkIC REG LDO 12V 1.5A TO263-3MIC29150-12WUIC REG LDO 12V 1.5A TO263-31008 - Immediate
MIC29150-12WU product page link
MIC29750-3.3WWT datasheet linkIC REG LDO 3.3V 7.5A TO247-3MIC29750-3.3WWTIC REG LDO 3.3V 7.5A TO247-30MIC29750-3.3WWT product page link
MIC29750-5.0WWT datasheet linkIC REG LDO 5V 7.5A TO247-3MIC29750-5.0WWTIC REG LDO 5V 7.5A TO247-30MIC29750-5.0WWT product page link
Published: 2012-06-29