MIC2937A
The MIC2937A family are "bulletproof" efficient voltage regulators with very low dropout voltage (typically 40mV at light loads and 300mV at 500mA) and very low quiescent current (160µA typical). The quiescent current of the MIC2937A increases only slightly in dropout, thus prolonging battery life. Key MIC2937A features include protection against reversed battery, fold-back current limiting, and automotive load-dump protection (60V positive transient).
The MIC2937 is available in several configurations. The MIC2937A-xx devices are 3-pin fixed voltage regulators with 3.3V, 5V, and 12V outputs available. The MIC29371 is a fixed regulator offering logic-compatible on/off switching input and an error flag output. This flag may also be used as a power-on reset signal. A logic-compatible shutdown input is provided on the adjustable MIC29372 that enables the regulator to be switched on and off.
Features- High output voltage accuracy
- Guaranteed 750mA 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 output dropout
- Logic-controlled electronic shutdown
- Output programmable from 1.24V to 26V (MIC29372)
- Available in TO-220, TO-263, TO-220-5, and TO-263-5 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)
750
|
750
| |
VIN Min (V)
4.3
|
4.3
| |
VIN Max (V)
26
|
26
| |
VOUT (V)
3.3, 5.0, 12
|
3.3, 5.0, 12
| |
Voltage Drop Typ (mV)
370
|
370
| |
IGND Typ (µA)
160
|
160
| |
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
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC2937A-3.3WT | 3 | TO-220 | -40C to +125C | TUBE | 2.24 | 1.87 | 1.70 | 1.42 | 1.31 |
| MIC2937A-3.3WU | 3 | TO-263 | -40C to +125C | TUBE | 2.37 | 1.98 | 1.80 | 1.50 | 1.38 |
| MIC2937A-3.3WU-TR | 3 | TO-263 | -40C to +125C | T/R | 2.37 | 1.98 | 1.80 | 1.50 | 1.38 |
| MIC2937A-5.0WT | 3 | TO-220 | -40C to +125C | TUBE | 2.37 | 1.98 | 1.80 | 1.50 | 1.38 |
| MIC2937A-5.0WU | 3 | TO-263 | -40C to +125C | TUBE | ** | ** | ** | ** | ** |
| MIC2937A-5.0WU-TR | 3 | TO-263 | -40C to +125C | T/R | 2.51 | 2.09 | 1.90 | 1.58 | 1.46 |
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC2937A-5.0WT | 1.890200 | 2.660000 | 3 | TO-220 | - | Matte Tin | e3 |  |  |
| MIC2937A-3.3WT | 1.890200 | 2.660000 | 3 | TO-220 | - | Matte Tin | e3 | | |
| MIC2937A-12WT | 1.890200 | 2.660000 | 3 | TO-220 | - | Matte Tin | e3 | | |
| MIC2937A-12WU-TR | 1.511000 | 2.506667 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC2937A-5.0WU | 1.511000 | 2.360000 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC2937A-3.3WU-TR | 1.511000 | 2.506667 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC2937A-3.3WU | 1.511000 | 2.360000 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC2937A-5.0WU-TR | 1.511000 | 2.506667 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC2937A-12WU | 1.511000 | 2.360000 | 3 | TO-263 | - | Matte Tin | e3 | | |
