MIC27600
The Micrel MIC27600 is a constant-frequency, synchronous buck regulator featuring a unique digitally modified adaptive on-time control architecture. The MIC27600 operates over an input supply range of 4.5V to 36V and provides a regulated output of up to 7A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 300kHz.
Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This digitally modified adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.
The MIC27600 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, "hiccup" mode short-circuit protection and thermal shutdown.
Features- Hyper Speed Control™ architecture enables
- High delta V operation (VIN = 36V and VOUT = 0.8V)
- Small output capacitance
- 4.5V to 36V voltage input
- Adjustable output from 0.8V to 5.5V (VHSD ≤ 28V)
- Adjustable output from 0.8V to 3.6V (VHSD ≤ 36V)
- ±1% FB accuracy
- Any Capacitor™ Stable - Zero-ESR to high-ESR
- 7A output current capability, up to 95% efficiency
- 300kHz switching frequency
- Internal compensation, 6ms Internal soft-start
- Foldback current-limit and "hiccup" mode short-circuit protection
- Thermal shutdown
- Supports safe startup into a pre-biased load
- -40°C to +125°C junction temperature range
- 28-pin 5mm - 6mm MLF® package
| Parameter|
Parameter Name
Value
| Value | |
Regulator Type
Step Down (Buck)
|
Step Down (Buck)
| |
# of Outputs
1
|
1
| |
Input Voltage Range Min (V)
4.5
|
4.5
| |
Input Voltage Range Max (V)
36
|
36
| |
Output Voltage Range Min (V)
0.8
|
0.8
| |
Output Voltage Range Max (V)
5.5
|
5.5
| |
Output Current (A) max
7
|
7
| |
Quiescent Current (mA) typ
1.4
|
1.4
| |
Switching Frequency (kHz)
300
|
300
| |
Synchronous Rectifier
Yes
|
Yes
| |
Operating Temp Range
-40 to 125
|
-40 to 125
| |
Vfb (V)
0.8
|
0.8
| |
Duty Cycle Max (%)
0.87
|
0.87
| |
SHUTDOWN Current (µA) (Typ)
700
|
700
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MIC27600YJL-TR | 28 | VQFN | -40C to +125C | T/R | 2.31 | 1.93 | 1.75 | 1.69 | 1.67 |
RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC27600YJL-TR | 0.081600 | 0.227180 | 28 | VQFN | 5x6x0.9mm | NiPdAu | e4 |  |  |
