MIC2141
The MIC2141 is a micropower boost switching regulator that can operate from 3- or 4-cell nickel-metal-hydride batteries or a single Li-Ion cell. This regulator employs a constant 330kHz, fixed 18% duty-cycle, gated-oscillator architecture.
The MIC2141 can be used in applications where the output voltage must be dynamically adjusted. The device features a control signal input which is used to proportionally adjust the output voltage. The control signal input has a gain of 6, allowing a 0.8V to 3.6V control signal to vary a 4.8V to 22V output.
The MIC2141 requires only three external components to operate and is available in a tiny 5-lead SOT-23 package for space and power-sensitive portable applications. The MIC2141 draws only 70µA of quiescent current and can operate with an efficiency exceeding 85%.
Features- Implements low-power boost, SEPIC, or flyback
- 2.2V to 14V input voltage
- 330kHz switching frequency
- <2µA shutdown current
- 70µA quiescent current
- 1.24V bandgap reference
- typical output current 1mA to 10mA
- SOT-23-5 package
| Parameter|
Parameter Name
Value
| Value | |
Regulator Type
Step Up (Boost)
|
Step Up (Boost)
| |
Input Voltage Range Min (V)
2.5
|
2.5
| |
Input Voltage Range Max (V)
14
|
14
| |
Output Voltage Range Min (V)
2.8
|
2.8
| |
Output Voltage Range Max (V)
22
|
22
| |
Quiescent Current (mA) typ
0.07
|
0.07
| |
Switching Frequency (kHz)
330
|
330
| |
Operating Temp Range
-40 to 85
|
-40 to 85
| |
Vfb (V)
1.24
|
1.24
| |
SHUTDOWN Current (µA) (Typ)
2
|
2
| |
Switch current (A) typ
1
|
1
| |
Alternative Topology
SEPIC, Flyback
|
SEPIC, Flyback
|
|
Documents
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC2141YM5-TR | 0.017400 | 0.049000 | 5 | SOT-23 | - | NiPdAu | e4 |  |  |
