Micrel, Inc. Supplier Page

MIC29150, 29300, 29500 and 29750 Series

Micrel, Inc. and Digi-Key Introduce High-current Low-dropout Regulators

MIC29150/29300/29500/29750 SeriesMicrel, Inc.'s MIC29150, 29300, 29500 and 29750 series are high current, high accuracy, low-dropout voltage regulators. Using Micrel's proprietary Super βeta PNP® process with a PNP pass element, these regulators feature 350mV to 425mV (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 7.5A regulators are available in 3-pin and 5-pin TO-247 packages. The 1.5A adjustable output MIC29152 is available in a 5-pin power D-Pak (TO-252) package.

  • High current capability
    • MIC29150...1.5A
    • MIC29300...3A
    • MIC29500...5A
    • MIC29750...7.5A
  • 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

Digi-Key Part Number Micrel Part Number Description Package Datasheet
576-2207-ND MIC29150-12WU IC REG LDO 1.5A 12V TO-263-3 Tube Datasheet
576-1107-ND MIC29150-5.0WU IC REG LDO 1.5A 5.0V TO263 Tube Datasheet
576-1106-ND MIC29150-5.0WT IC REG LDO 1.5A 5.0V TO220-3 Tube Datasheet
576-2206-ND MIC29150-12WT IC REG LDO 1.5A 12V TO-220-3 Tube Datasheet
576-1105-ND MIC29150-3.3WU IC REG LDO 1.5A 3.3V TO263 Tube Datasheet
576-1118-ND MIC29300-12WT IC REG LDO 3A 12.0V TO220-3 Tube Datasheet
576-1121-ND MIC29300-5.0WT IC REG LDO 3A 5.0V TO220-3 Tube Datasheet
576-1120-ND MIC29300-3.3WU IC REG LDO 3A 3.3V TO263 Tube Datasheet
576-2222-ND MIC29300-12WU IC REG LDO 3.0A 12V TO-263-3 Tube Datasheet
576-1119-ND MIC29300-3.3WT IC REG LDO 3A 3.3V TO220-3 Tube Datasheet
576-1122-ND MIC29300-5.0WU IC REG LDO 3A 5.0V TO263 Tube Datasheet
576-1143-ND MIC29500-5.0WT IC REG LDO 5A 5.0V TO220-3 Tube Datasheet
576-1142-ND MIC29500-3.3WT IC REG LDO 5A 3.3V TO220-3 Tube Datasheet
576-2254-ND MIC29750-5.0WWT IC REG LDO 7.5A 5.0V TO-247-3 Tube Datasheet
576-2253-ND MIC29750-3.3WWT IC REG LDO 7.5A 3.3V TO-247-3 Tube Datasheet