MIC39300
The MIC39300, MIC39301, and MIC39302 are 3.0A low-dropout linear voltage regulators that provide a low voltage, high-current output with a minimum of external components. Utilizing Micrel's proprietary Super βeta PNP® pass element, the MIC39300/1/2 offers extremely low dropout (typically 385mV at 3.0A) and low ground current (typically 36mA at 3.0A).
The MIC39300/1/2 is ideal for PC add-in cards that need to convert from standard 3.3V to 2.5V, or 2.5V to 1.8V. A guaranteed maximum dropout voltage of 500mV over all operating conditions allows the MIC39300/1/2 to provide 2.5V from a supply as low as 3V, and 1.8V from a supply as low as 2.5V. The MIC39300/1/2 also has fast transient response for heavy switching applications. The device requires only 47µF of output capacitance to maintain stability and achieve fast transient response.
The MIC39300/1/2 is fully protected with overcurrent limiting, thermal shutdown, reverse battery protection, reverse leakage protection, and reverse lead insertion. The MIC39301 offers a TTL logic-compatible enable pin and an error flag that indicates under voltage and over current conditions. Offered in fixed voltages, the MIC39300/1 comes in the TO-220 and TO-263 (D2Pak) packages and is an ideal upgrade to older, NPN-based linear voltage regulators. The MIC39302 adjustable option allows programming the output voltage anywhere between 1.24V and 15.5V and is offered in a 5-Pin, TO-263 (D2Pak) package.
Features- 3.0A minimum guaranteed output current
- 550mV maximum dropout voltage over temperature
- Ideal for 3.0V to 2.5V conversion
- Ideal for 2.5V to 1.8V conversion
- 1% initial accuracy
- Low ground current
- Current limiting and thermal shutdown
- Reverse battery protection
- Reverse leakage protection
- Fast transient response
- TO-263 (D2Pak) and TO-220 packaging
- TTL/CMOS compatible enable pin (MIC39301/2 only)
- Error flag output (MIC39301 only)
- Adjustable output (MIC39302 only)
| 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)
16
|
16
| |
VOUT (V)
1.8, 2.5
|
1.8, 2.5
| |
Voltage Drop Typ (mV)
385
|
385
| |
IGND Typ (µA)
4
|
4
| |
Tol Typ %
±1
|
±1
| |
Soft Start Pin
|
| |
Load Dump
|
| |
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+ |
|---|
| MIC39300-1.8WT | 3 | TO-220 | -40C to +125C | TUBE | 3.14 | 2.62 | 2.38 | 1.98 | 1.83 |
| MIC39300-1.8WU | 3 | TO-263 | -40C to +125C | TUBE | 3.14 | 2.62 | 2.38 | 1.98 | 1.83 |
| MIC39300-2.5WT | 3 | TO-220 | -40C to +125C | TUBE | 3.14 | 2.62 | 2.38 | 1.98 | 1.83 |
| MIC39300-2.5WU | 3 | TO-263 | -40C to +125C | TUBE | 3.32 | 2.77 | 2.52 | 2.10 | 1.94 |
| MIC39300-2.5WU-TR | 3 | TO-263 | -40C to +125C | T/R | 3.32 | 2.77 | 2.52 | 2.10 | 1.94 |
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC39300-1.8WT | 1.890200 | 2.660000 | 3 | TO-220 | - | Matte Tin | e3 |  |  |
| MIC39300-2.5WT | 1.890200 | 2.660000 | 3 | TO-220 | - | Matte Tin | e3 | | |
| MIC39300-2.5WU-TR | 1.511000 | 2.506667 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC39300-1.8WU | 1.511000 | 2.360000 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC39300-2.5WU | 1.511000 | 2.360000 | 3 | TO-263 | - | Matte Tin | e3 | | |
| MIC39300-1.8WU-TR | 1.511000 | 2.506667 | 3 | TO-263 | - | Matte Tin | e3 | | |
