MIC4684
The MIC4684 is a high-efficiency 200kHz stepdown (buck) switching regulator. Power conversion efficiency of above 85% is easily obtainable for a wide variety of applications. The MIC4684 achieves 2A of continuous current in an 8-lead SO (small outline) package at 60°C ambient temperature.
High efficiency is maintained over a wide output current range by utilizing a boost capacitor to increase the voltage available to saturate the internal power switch. As a result of this high efficiency, no external heat sink is required. The MIC4684, housed in an SO-8, can replace larger TO-220 and TO-263 packages in many applications.
The MIC4684 allows for a high degree of safety. It has a wide input voltage range of 4V to 30V (34V transient), allowing it to be used in applications where input voltage transients may be present. Built-in safety features include over-current protection, frequency-foldback short-circuit protection, and thermal shutdown.
The MIC4684 is available in an 8-lead SO package with a junction temperature range of -40°C to +125°C.
Features- SO-8 package with 2A continuous output current
- Over 85% efficiency
- Fixed 200kHz PWM operation
- Wide input voltage range: 4V to 30V
- Output voltage adjustable to 1.235V
- All surface mount solution
- Internally compensated with fast transient response
- Over-current protection
- Frequency foldback short-circuit protection
- Thermal shutdown
| Parameter|
Parameter Name
Value
| Value | |
Regulator Type
Step Down (Buck)
|
Step Down (Buck)
| |
# of Outputs
1
|
1
| |
Input Voltage Range Min (V)
4
|
4
| |
Input Voltage Range Max (V)
30
|
30
| |
Output Voltage Range Min (V)
1.24
|
1.24
| |
Output Current (A) max
2
|
2
| |
Quiescent Current (mA) typ
6
|
6
| |
Switching Frequency (kHz)
200
|
200
| |
Operating Temp Range
-40 to 125
|
-40 to 125
| |
Vfb (V)
1.24
|
1.24
| |
Duty Cycle Max (%)
0.94
|
0.94
| |
SHUTDOWN Current (µA) (Typ)
5
|
5
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC4684YM | 8 | SOIC | -40C to +125C | TUBE | 1.74 | 1.45 | 1.32 | 1.27 | 1.26 |
| MIC4684YM-TR | 8 | SOIC | -40C to +125C | T/R | 1.74 | 1.45 | 1.32 | 1.27 | 1.26 |
相关开发工具
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC4684YM | | 0.000000 | 8 | SOIC | 3.9mm | Matte Tin | e3 |  |  |
| MIC4684YM-TR | | 0.000000 | 8 | SOIC | 3.9mm | Matte Tin | e3 | | |
