MIC261203-ZAYJL-TR More Semiconductors - ICs by Microchip Technology
28V/12A DC-DC Buck Regulator w/Hyper Light Load™
| Status: | Active |
|---|---|
| Series: | MIC261203Z |
| RoHS: | Compliant |
The MIC261203-ZA is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC261203-ZA operates over an input supply range of 4.5V to 28V and provides a regulated output of up to 12A of output current. The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600kHz.
Hyper Speed Control™ architecture allows for ultra-fast transient response while reducing the output capacitance and also makes High VINLow VOUT operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device.
The MIC261203-ZA offers a full suite of 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. An open-drain Power Good (PG) pin is provided.
Features
| Hyper Speed Control™ architecture enables |
| High Delta V operation (VIN = 28V and VOUT = 0.6V) |
| Small output capacitance |
| 4.5V to 28V voltage input |
| 12A output current capability and 95% peak efficiency |
| Adjustable output from 0.6V to 5.5V |
| ±1% feedback accuracy |
| Any Capacitor™ stable - zero-to-high ESR |
| 600kHz switching frequency |
| No external compensation |
| Power Good (PG) output |
| Foldback I-limit and "hiccup" mode short-circuit protection |
| Supports safe startup into a pre-biased load |
| -40°C to +125°C junction temperature range |
| Available in 28-pin 5mm — 6mm QFN package |
Specifications
| Regulator Type | Step Down (Buck) |
|---|---|
| pricing | 0 |
| Supported Output | 0 |
| Minimum Input Voltage (V) | 0 |
| Maximum Input Voltage (V) | 28 |
| Output Current (mA) Max | 0 |
| Maximum Frequency (kHz) | 0 |
| Vref (V) | 0 |
| Duty Cycle Min (%) | 0 |
| Duty Cycle Max (%) | 0.82 |
| Switching Frequency (kHz) | 600 |
| Input Voltage Range Min | 4.5 |
| Input Voltage Range Max | 28 |
| Output Current | 12000 |
| Temp Range Min | -40 |
| Temp Range Max | 125 |
| Vout Min (V) | 0.6 |
| Vout Max (V) | 5.5 |
| Quiescent Current (mA) typ | 0.73 |
| Light Load Efficiency Mode | No |
| Switch current (A) typ | 0 |
| Automotive Rated | No |
| SHUTDOWN Current (µA) (Typ) | 5 |
| # of Outputs | 1 |
| Vfb (V) | 0.6 |
| Synchronous Rectifier | Yes |
Resources
Environmental Information
| JEDEC Indicator | e4 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.0816 |
| Shipping Weight (kg) | 0.22718 |
| Lead Count | 28 |
| Package Type | VQFN |
| Package Width or Size | 5x6x0.9mm |
| Soldering Composition | NiPdAu |
Alternative Descriptions
| 28V/12A Dc-Dc Buck Regulator W/ Hll 28 Vqfn 5X6X0.9Mm T/R Rohs Compliant: Yes |Microchip MIC261203-ZAYJL-TR | Newark Electronics |
| Conv DC-DC Single Step Down 4.5V 28V 28-Pin VQFN T/R | Avnet America |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a MIC261203-ZAYJL-TR?
Additional datasheets, footprints and schematics for MIC261203-ZAYJL-TR are listed on our Part Details page. You can also find images and similar parts to MIC261203-ZAYJL-TR on this page.
What pricing and inventory information can I view?
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What category does MIC261203-ZAYJL-TR fall under?
The MIC261203-ZAYJL-TR is listed under Semiconductors - ICs > More Semiconductors - ICs.
Can I view similar or alternative parts?
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Is the MIC261203-ZAYJL-TR RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for MIC261203-ZAYJL-TR have stock available?
Authorised distributors including Newark Electronics and Avnet America have stock available or on a lead time for MIC261203-ZAYJL-TR.
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