MIC29303

The MIC29150/29300/29500/29750 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 MIC29150/29300/29500/29750 are fully protected against overcurrent faults, reversed input polarity, reversed lead insertion, over-temperature operation, and positive and negative transient voltage spikes. Five-pin fixed voltage versions feature logic-level on/off control and an error flag which signals whenever the output falls out 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 MIC29150/29300/29500 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.

For applications with an input voltage of 6V or below, see MIC37xxx LDOs.

Features
  • High current capability MIC29150/29151/29152/29153: 1.5A MIC29300/29301/29302/29303: 3A MIC29500/29501/29502/29503: 5A MIC29750/29751/29752: 7.5A
  • MIC29150/29151/29152/29153: 1.5A
  • MIC29300/29301/29302/29303: 3A
  • MIC29500/29501/29502/29503: 5A
  • MIC29750/29751/29752: 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
Parameter
Parameter Name Value Value
Product Type Single LDOs Single LDOs
# of Out 1 1
IOUT #1
IOUT #2
IOUT #3
IOUT #4
IOUT (mA) 3000 3000
VIN Min (V) 2.25 2.25
VIN Max (V) 26 26
VOUT (V) Adj Adj
Voltage Drop Typ (mV) 370 370
IGND Typ (µA) 3 3
Tol Typ % ±1 ±1
Noise (µV) rms 260 260
Soft Start Pin
Load Dump Yes Yes
Rev Bat Yes Yes
Reverse Current Protect Yes Yes
Documents
MIC29150/29300/29500/29750 - High-Current Low-Dropout RegulatorsData Sheets11/09/2015835KB
Micrel AN 12 - Design Considerations for 5V to 3.3V Pass RegulatorsAppNote10/01/201528KB
Micrel AN 43 - Improving Adjustable Regulator AccuracyAppNote10/01/201559KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC29303WT5TO-220-40C to +125CTUBE4.143.453.142.622.42
MIC29303WU5DDPAK-40C to +125CTUBE**********
MIC29303WU-TR5DDPAK-40C to +125CT/R4.143.453.142.622.42
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC29303WT1.9839003.1200005TO-220-Matte Tine3
MIC29303WU1.4625002.5200005DDPAK-Matte Tine3
MIC29303WU-TR1.4625002.0533335DDPAK-Matte Tine3
MIC29150/29300/29500/29750 - High-Current Low-Dropout Regulators MIC29752
Micrel AN 12 MIC2951
Micrel AN 43 MIC29751