MIC22705
The Micrel MIC22705 is a high-efficiency, 7A integrated switch synchronous buck (step-down) regulator. The MIC22705 is optimized for highest efficiency, achieving more than 95% efficiency while still switching at 1MHz. The ultra-high speed control loop keeps the output voltage within regulation even under the extreme transient load swings commonly found in FPGAs and low-voltage ASICs. The output voltage is pre-bias safe and can be adjusted down to 0.7V to address all low-voltage power needs.
The MIC22705 offers a full range of sequencing and tracking options. The Enable/Delay (EN/DLY) pin, combined with the Power Good (PG) pin, allows multiple outputs to be sequenced in any way during turn-on and turn-off. The Ramp Control™ (RC) pin allows the device to be connected to another product in the MIC22xxx and/or MIC68xxx family, to keep the output voltages within a certain ∆V on start-up.
The MIC22950 features a full range of sequencing and tracking options. The enable and the delay pins, combined with the power good pin, allow multiple outputs to be sequenced in several ways during turn on and turn off. The RC (Ramp Control™) pin allows the device to be connected to any another device in the MIC22x00 family of products, to keep the output voltages within a certain ࢞V during start-up.
The MIC22705 is available in a 24-pin 4mm x 4mm MLF® with a junction operating range from -40°C to +125°C.
Features- Input voltage range: 2.9V to 5.5V
- Output voltage adjustable down to 0.7V
- Output load current up to 7A
- Safe start-up into a pre-biased load
- Full sequencing and tracking capability
- Power Good output
- Efficiency >95% across a broad load range
- Ultra-fast transient response
- Easy RC compensation
- 100% maximum duty cycle
- Fully-integrated MOSFET switches
- Thermal-shutdown and current-limit protection
- 24-pin 4mm x 4mm MLF®
- -40°C to +125°C junction temperature range
| Parameter|
Parameter Name
Value
| Value | |
Regulator Type
Step Down (Buck)
|
Step Down (Buck)
| |
# of Outputs
1
|
1
| |
Input Voltage Range Min (V)
2.9
|
2.9
| |
Input Voltage Range Max (V)
5.5
|
5.5
| |
Output Voltage Range Min (V)
0.7
|
0.7
| |
Output Voltage Range Max (V)
5.5
|
5.5
| |
Output Current (A) max
7
|
7
| |
Quiescent Current (mA) typ
0.85
|
0.85
| |
Switching Frequency (kHz)
1000
|
1000
| |
Synchronous Rectifier
Yes
|
Yes
| |
Operating Temp Range
-40 to 125
|
-40 to 125
| |
Vfb (V)
0.7
|
0.7
| |
Duty Cycle Max (%)
1
|
1
| |
SHUTDOWN Current (µA) (Typ)
5
|
5
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC22705YML-TR | 24 | VQFN | -40C to +125C | T/R | 3.20 | 2.66 | 2.42 | 2.34 | 2.31 |
相关开发工具
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC22705YML-TR | 0.038700 | 0.204000 | 24 | VQFN | 4x4x0.9mm | Matte Tin | e3 |  |  |
