MIC2129T-E/U3B
ActiveSWITCHING CONTROLLERS 100V, SYNCH BUCK CONTROLLER W/ ADJ GATE DRIVE & INTEGRATED BOOTSTRAP SCHOTTKY
Deep-Dive with AI
Search across all available documentation for this part.
MIC2129T-E/U3B
ActiveSWITCHING CONTROLLERS 100V, SYNCH BUCK CONTROLLER W/ ADJ GATE DRIVE & INTEGRATED BOOTSTRAP SCHOTTKY
Technical Specifications
Parameters and characteristics for this part
| Specification | MIC2129T-E/U3B |
|---|---|
| Clock Sync | No |
| Control Features | Soft Start, Current Limit, Enable, Power Good |
| Frequency - Switching (Max) | 800 kHz |
| Frequency - Switching (Min) | 100 kHz |
| Function | Step-Down |
| Mounting Type | Wettable Flank, Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 24-VFQFN Exposed Pad |
| Package Length | 4 mm |
| Package Name | 24-VQFN |
| Package Width | 4 mm |
| Synchronous Rectifier | Yes |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) Maximum | 100 V |
| Voltage - Supply (Vcc/Vdd) Minimum | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 4.27 | <1d |
| 25 | $ 3.56 | |||
| 100 | $ 3.24 | |||
| Tape & Reel (TR) | 1000 | $ 3.24 | <1d | |
| Microchip Direct | T/R | 1 | $ 4.27 | 1m+ |
| 25 | $ 3.56 | |||
| 100 | $ 3.24 | |||
| 1000 | $ 2.99 | |||
| 5000 | $ 2.84 | |||
| 10000 | $ 2.70 | |||
| Mouser | N/A | 1 | $ 4.27 | 1m+ |
| 25 | $ 3.56 | |||
| 100 | $ 3.24 | |||
| 1000 | $ 3.24 | |||
CAD
3D models and CAD resources for this part
Description
General part information
MIC2129 Series
The MIC2129 is a constant-frequency synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2129 operates over an input voltage range from 4.5V to 100V and can be used to supply load current up to 25A (Thermally Limited) . The output voltage is adjustable down to 0.6V with an accuracy of ±1%. The device operates with programmable switching frequency from 100kHz to 800kHz. The MIC2129 controller offers three selectable gate drive voltages (5.2V, 7.5V, 10.5V) to enable the use of logic level or standard FETS to ensure optimal efficiency. The high voltage bootstrap diode is also integrated in this controller saving overall solution size and cost. The other key features of the MIC2129 are remote sense, integrated bootstrap LDO's, adjustable soft start, selectable light load operating modes, precision enable, selectable current limit modes (Hiccup, Latch-up, Cycle by cycle), output OVP protection, Power Good and thermal shut down. The MIC2129 is offered in a 24 pin QFN and as well as TSSOP packages.
Documents
Technical documentation and resources
