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MP2112 2.5-6V, 1A, 1MHz Synchronous Step-Down Converter TSOT23
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pMPS MP2112 — Synchronous Step-Down Converter, 2.5-6V input, 1 A output, TSOT23./p
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MP2112 2.5-6V, 1A, 1MHz Synchronous Step-Down Converter TSOT23
The MPS MP2112 is a Synchronous Step-Down Converter. It operates from a 2.5 V to 6 V input, is rated for 1 A and switches at 1 MHz. It is supplied in a TSOT23 package.
The MP2112 is a 1MHz constant frequency, current mode, PWM step-down converter.
Key Specifications
| Part Number | MP2112 |
| Function | Synchronous Step-Down Converter |
| Input Voltage | 2.5 V to 6 V |
| Current Rating | 1 A |
| Switching Frequency | 1 MHz |
| Interface | PWM |
| Peak Efficiency | 95% |
| Package | TSOT23 |
| Ordering Codes | MP2112 |
Features
- High Efficiency: Up to 95%
- 1MHz Constant Switching Frequency
- 1A Available Load Current
- 2.5V to 6V Input Voltage Range
- Output Voltage as Low as 0.6V
- 100% Duty Cycle in Dropout
- Current Mode Control
- Short Circuit Protection
- Thermal Fault Protection
- <0.1μA Shutdown Current
Typical Application Circuit
Applications
- Cellular and Smart Phones
- Microprocessors and DSP Core Supplies
- MP3 Players
- Digital Still and Video Cameras
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 MP2112 support?
2.5 V to 6 V. The rated output is 1 A.
Which package and ordering codes apply to the MP2112?
TSOT23; order codes include MP2112.
What are the defining features of the MP2112?
High Efficiency: Up to 95% 1MHz Constant Switching Frequency
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