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NCP3232NMNTXG
DFN-10 (3x3mm)
The NCP3232NMNTXG from onsemi is a 3A step-down converter with 4.5-18V input, 1MHz switching, and 95% efficiency in DFN-10 for point-of-load power supplies.
| Package | DFN-10 (3x3mm) |
The NCP3232NMNTXG from onsemi is a 3A step-down converter with 4.5-18V input, 1MHz switching, and 95% efficiency in DFN-10 for point-of-load power supplies.
The NCP3232NMNTXG is a 3A synchronous buck converter from onsemi in DFN-10 (3x3mm), operating from 4.5V to 18V input with 1MHz switching frequency. It integrates both high-side and low-side N-channel MOSFETs (synchronous rectification), eliminating the need for an external Schottky diode and improving efficiency by 3-5% compared to asynchronous designs. The 0.6V feedback reference (lower than typical 0.8V) reduces divider current and supports output voltages as low as 0.6V. The COMP pin allows external Type-II compensation for optimal transient response with various output capacitor types. The SS/TRK pin supports both soft-start (ramp output voltage over time) and voltage tracking (follow another supply rail during start-up). The PGOOD output indicates when the output is within +/-7% of target, useful for sequencing multiple supply rails. The EN pin (active HIGH, internal 1M-ohm pull-up) allows start-up when floating. The BOOT pin requires a 0.1uF bootstrap capacitor to SW, providing the gate drive voltage above VIN for the high-side MOSFET. The DFN-10 package with exposed pad achieves 38C/W thermal resistance, critical for dissipating the 1W total loss at 3A load. Peak efficiency exceeds 93% at 5V input, 3.3V output, 1A load.
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BOOT | Power | Bootstrap cap (0.1uF to SW for high-side gate drive) |
| 2 | VIN | Power | Input supply (4.5-18V) |
| 3 | SW | Output | Switching node (internal MOSFET drain) |
| 4 | GND | Power | Ground (exposed pad) |
| 5 | FB | Input | Feedback (0.6V reference, adjustable output) |
| 6 | COMP | Analog | Error amplifier output (external compensation) |
| 7 | SS/TRK | Analog | Soft-start / Tracking (external capacitor) |
| 8 | EN | Input | Enable (active high, internal pull-up) |
| 9 | PGOOD | Output | Power-good (open-drain, active high) |
| 10 | AGND | Power | Analog ground |
| Manufacturer | Part Number | Package | Notes |
|---|---|---|---|
| onsemi | NCP3232CMNTXG | DFN-10 | Same device, commercial temp range |
| Texas Instruments | TPS54331DDCR | SOT-23-6 | 3A buck, 3.5-28V, similar spec |
| Analog Devices | ADP2301AUJZ-R7 | TSOT-26 | 3A buck, 3-20V, 650kHz |
| Monolithic Power | MP2307DN-LF-Z | SOIC-8 | 3A buck, 4.75-23V, 500kHz |
| Richtek | RT7275BGSP | SOP-8 | 3A buck, 4.5-36V, higher voltage |
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
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