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Overview
| Topology | Buck Converter |
| Input voltage | 4.5-28 V |
| Switching frequency | 200-750 kHz |
| Output 1 | 3.3 V / 20 A |
| IC revision | A |
Description
The MIC2125 and MIC2126 are constant-frequency synchronous buck controllersfeaturing a unique adaptive ON-time control architecture. The MIC2125/6 operate overan input voltage range from 4.5V to 28V and can be used to supply load current up to25A. The output voltage is adjustable down to 0.6V with an accuracy of ±1%. Thedevice operates with programmable switching frequency from 200 kHz to 750 kHz.HyperLight Load® architecture operates in pulse-skipping mode at light loads, butoperates in fixed-frequency CCM mode from medium loads to heavy loads. HyperSpeed Control® architecture operates in fixed-frequency CCM mode under all loadconditions.The basic parameters of the evaluation board are:• Input: 5V to 28V• Output: 0.6V to 5V at 20A• 350 kHz Switching Frequency (Adjustable from 200 kHz to 750 kHz)
Features
- Hyper Speed Control® Architecture Enables:
- High delta V operation (VIN = 28V and VOUT = 0.6V)
- Any Capacitor™ stable
- 4.5V to 28V Input Voltage
- Adjustable Output Voltage from 0.6V to 24V
- 200 kHz to 750 kHz Programmable Switching Frequency
- HyperLight Load® (MIC2125)
- Hyper Speed Control (MIC2126)
- Enable Input and Power Good Output
- Built-in 5V Regulator for Single-Supply Operation
- Programmable Current Limit and “Hiccup” Mode Short-Circuit Protection
- 7 ms Internal Soft-Start, Internal Compensation, and Thermal Shutdown
- Supports Safe Start-Up into a Prebiased Output
- –40°C to +125°C Junction Temperature Range
- 16-pin, 3 mm × 3 mm QFN Package
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IRP,40K(A) | ISAT,10%(A) | ISAT,30%(A) | RDC(mΩ) | fres(MHz) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-HCI SMT Flat Wire High Current Inductor, 0.72 µH, 37.8 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance0.72 µH | Performance Rated Current37.8 A | Saturation Current @ 10%14 A | Saturation Current @ 30%35 A | DC Resistance1.3 mΩ | Self Resonant Frequency115 MHz | MaterialSuperflux |