MIC2954

The MIC2954 is a "bulletproof", efficient voltage regulator with very low dropout voltage (typically 40mV at light loads and 375mV at 250mA) and low quiescent current (120µA typical). The quiescent current of the MIC2954 increases only slightly in dropout, thus prolonging battery life. Key MIC2954 features include protection against reversed battery, fold-back current limiting, and automotive load-dump protection (60V positive transient).

The MIC2954-07/08BM is an adjustable version that includes an error flag output that warns of a low output voltage, which is often due to failing batteries on the input. This may also be used as a power-on reset. A logic-compatible shutdown input is provided which enables the regulator to be switched on and off. This part may be pin-strapped for 5V output or programmed from 1.24V to 29V with the use of two external resistors.

The MIC2954 is available in two voltage tolerances, ±0.5% maximum and ±1% maximum. Both are guaranteed for junction temperatures from -40°C to +125°C.

The MIC2954 has a very low output voltage temperature coefficient and extremely good load and line regulation (0.04% typical).

Features
  • High-accuracy: 5V, guaranteed 250mA output
  • Low quiescent current
  • Low dropout voltage
  • Extremely tight load and line regulation
  • Very low temperature coefficient
  • Current and thermal limiting
  • Input can withstand -20V reverse battery and +60V positive transients
  • Error flag warns of low output voltage
  • Logic-controlled electronic shutdown
  • Output programmable from 1.24V to 29V (MIC2954-07/08)
  • Available in TO-220, TO-92, and surface-mount SOT-223 and SOP-8 packages
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) 250 250
VIN Min (V) 2 2
VIN Max (V) 30 30
VOUT (V) 5.0, Adj 5.0, Adj
Voltage Drop Typ (mV) 375 375
IGND Typ (µA) 140 140
Tol Typ % ±1 ±1
Soft Start Pin
Load Dump Yes Yes
Rev Bat
Reverse Current Protect
Documents
MIC2954 - 250mA Low-Dropout RegulatorData Sheets11/09/2015520KB
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+
MIC2954-02WS3SOT-223-40C to +125CTUBE1.721.431.301.081.00
MIC2954-02WS-TR3SOT-223-40C to +125CT/R1.721.431.301.081.00
MIC2954-03WS3SOT-223-40C to +125CTUBE1.611.341.221.020.94
MIC2954-03WS-TR3SOT-223-40C to +125CT/R1.611.341.221.020.94
MIC2954-03WT3TO-220-40C to +125CTUBE1.981.651.501.251.15
MIC2954-07YM8SOIC-40C to +125CTUBE1.691.411.281.070.98
MIC2954-07YM-TR8SOIC-40C to +125CT/R1.691.411.281.070.98
MIC2954-08YM8SOIC-40C to +125CTUBE1.481.231.120.930.86
MIC2954-08YM-TR8SOIC-40C to +125CT/R1.481.231.120.930.86
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2954-02WT1.8902002.6600003TO-220-Matte Tine3
MIC2954-03WT1.8902002.6600003TO-220-Matte Tine3
MIC2954-07YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2954-07YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2954-08YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2954-08YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2954-02WS0.1230000.2435903SOT-223-Matte Tine3
MIC2954-03WS0.1230000.2435903SOT-223-Matte Tine3
MIC2954-03WS-TR0.1230000.4400003SOT-223-Matte Tine3
MIC2954-02WS-TR0.1230000.4400003SOT-223-Matte Tine3
MIC2954 - 250mA Low-Dropout Regulator MIC2954
Micrel AN 12 MIC29752
Micrel AN 43 MIC29751