MIC2185
Micrel's MIC2185 is a high efficiency synchronous boost PWM control IC. With its wide input voltage range of 2.9V to 14V, the MIC2185 can be used to efficiently boost voltages in 1- or 2-cell Li-Ion battery powered applications, as well as fixed 3.3V and 5V systems. Its powerful 5 Ohm output drivers allow the MIC2185 to supply large output currents with the selection of the proper external MOSFETs.
With it's fixed frequency PWM architecture, and easily synchronized drive, the MIC2185 is ideal for noise-sensitive telecommunications applications. The nominal 400kHz operating frequency of the MIC2185 can be divided by two, allowing the device to be externally synchronized to frequencies below 400kHz.
The MIC2185 also features a low current shutdown mode and a programmable undervoltage lockout. A skipped pulse mode of operation can be manually set to achieve higher efficiencies at light load conditions.
The MIC2185 is available in a 16-pin SOIC package and 16-pin QSOP package with an ambient temperature operating range from -40°C to 85°C.
产品特性- Input voltage range: 2.9V to 14V
- 95% efficiency
- Oscillator frequency of 200kHz/400kHz
- Frequency sync to 600kHz
- 0.5µA shutdown current
- Two 5Ω output drivers
- Front edge blanking
- Input voltage range: 2.9V to 14V
- 95% efficiency
- Oscillator frequency of 200kHz/400kHz
- Frequency sync to 600kHz
- 0.5µA shutdown current
- Two 5Ω output drivers
- Front edge blanking
| 技术参数|
Parameter Name
Value
| Value | |
Supported Topologies
Boost, SEPIC, Cuk
|
Boost, SEPIC, Cuk
| |
Supported Outputs
1
|
1
| |
Minimum Input Voltage (V)
2.9
|
2.9
| |
Maximum Input Voltage (V)
14
|
14
| |
PFM, Discontinuous, Hyperlight load, or Skip Mode
True
|
True
| |
Typical Tolerance (%)
±1
|
±1
| |
Duty Cycle Max (%)
0.85
|
0.85
| |
Operating Frequency (Hz)
200K / 400K
|
200K / 400K
| |
External Clock Sync
True
|
True
| |
Soft Start
True
|
True
| |
Internal Voltage Bias
True
|
True
| |
Enable Pin
True
|
True
| |
Current Limit / Short Circuit Protection
True
|
True
| |
Operating Supply Current (mA)
4.6
|
4.6
| |
Iq Off (µA)
0.5
|
0.5
| |
Package
16/SOIC, 16/QSOP
|
16/SOIC, 16/QSOP
|
|
文档资料
订购型号
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC2185YQS | 16 | QSOP | -40C to +125C | TUBE | ** | ** | ** | ** | ** |
器件无铅环保信息
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC2185YM | 0.157400 | 0.300000 | 16 | SOIC | .150in | Matte Tin | e3 |  |  |
| MIC2185YM-TR | 0.157400 | 0.307692 | 16 | SOIC | .150in | Matte Tin | e3 | | |
| MIC2185YQS | 0.083600 | 0.160000 | 16 | QSOP | 3.90mm(.150in) | Matte Tin | e3 | | |
| MIC2185YQS-TR | 0.083600 | 0.320000 | 16 | QSOP | 3.90mm(.150in) | Matte Tin | e3 | | |
