Welcome to our company!
MP9403 4.3-7V, 3A, 250kHz Integrated Synchronous Step-Down Converter SOIC
Share
pMPS MP9403 — Integrated Synchronous Step-Down Converter, 4.3-7V input, 3 A output, SOIC./p
- Product Details
- Download
MP9403 4.3-7V, 3A, 250kHz Integrated Synchronous Step-Down Converter SOIC
The MPS MP9403 is a Integrated Synchronous Step-Down Converter. It operates from a 4.3 V to 7 V input, is rated for 3 A and switches at 250 kHz. It is supplied in a SOIC package.
Key Specifications
| Part Number | MP9403 |
| Function | Integrated Synchronous Step-Down Converter |
| Input Voltage | 4.3 V to 7 V |
| Current Rating | 3 A |
| Switching Frequency | 250 kHz |
| Peak Efficiency | 93% |
| Package | SOIC |
| Ordering Codes | MP9403 |
Features
- 3A Output Current
- 4.3V to 7V Operating Input Range
- Integrated MOSFET Switches
- Output Adjustable from 0.80V to 5.50V
- Up to 93% Efficiency
- Programmable Soft-Start
- Stable with Low ESR Ceramic Output Capacitors
- Fixed 250kHz Frequency
- Cycle-by-Cycle Over Current Protection
- Input Under Voltage Lockout
Typical Application Circuit
Applications
- Distributed Power Systems
- Pre-Regulator for Linear Regulators
- Notebook Computers "MPS" and "The Future of Analog IC Technology" are Registered Trademarks of Monolithic Power Systems, Inc.
Design Notes
- Size the inductor for the ripple current at the actual switching frequency, typically 30% of the DC load — not for the DC rating alone.
- The hot loop from input capacitor through the switch to ground sets conducted EMI. Keep that copper area as small as the layout allows.
- Output ripple is set by the capacitor ESR and its DC-bias derating; a 10 µF ceramic often behaves like 4 µF at the rated output voltage.
- Route the feedback divider from the output capacitor terminals, away from the switch node.
Common Questions
What input voltage does the MP9403 support?
4.3 V to 7 V. The rated output is 3 A.
Which package and ordering codes apply to the MP9403?
SOIC; order codes include MP9403.
What are the defining features of the MP9403?
3A Output Current 4.3V to 7V Operating Input Range
Shenzhen Gaorunxin Technology Co., Ltd
Online message
Shenzhen Gaorunxin Technology Co., Ltd
