Summary of MPS’ MP8770C IS A 3 V TO 17 V, 8 A, SYNCHRONOUS STEP-DOWN CONVERTER WITH FORCED CCM
MPS’ MP8770C is a compact, fully integrated synchronous step-down converter (QFN-16, 3x3 mm) delivering up to 8 A output from a 3 V to 17 V input. It uses constant on-time control and forced PWM/CCM for fast transient response, high efficiency, and tight regulation. Features include low RDS(ON) internal MOSFETs, 700 kHz switching, 100 μA quiescent current, adjustable 0.6 V output, pre-biased startup, programmable soft-start, EN and power-good pins, and comprehensive protections (SCP, OCP, UVP, thermal shutdown).
Parts used in the MP8770C Project:
- MP8770C synchronous step-down converter (QFN-16, 3 mm x 3 mm)
- External inductor (value per design)
- Input capacitors (standard, readily available)
- Output capacitors (standard, readily available)
- Soft-start programming capacitor
- EN (enable) control signal source or resistor network
- Power good monitoring connection or resistor network
- PCB with appropriate layout for high-frequency switching
- Optional feedback resistors to set output voltage (to 0.6 V and above)
MPS’ MP8770C is a 3 V to 17 V, 8 A, synchronous step-down converter with forced CCM
The MP8770C from Monolithic Power Systems is a fully integrated, high-frequency, synchronous rectified step-down switch-mode converter with internal power MOSFETs.
The device offers a very compact solution to achieve 8 A of continuous output current with excellent load and line regulation over a wide input range. It uses synchronous mode operation for higher efficiency over the output current load range. Constant on-time (COT) control operation provides a very fast transient response, easy loop design, and very tight output regulation. Full protection features include short-circuit protection (SCP), overcurrent protection (OCP), Undervoltage protection (UVP), and thermal shutdown. The MP8770C requires a minimal number of readily available, standard external components and is available in a space-saving QFN-16 (3 mm x 3 mm) package.
Features
- Operating input range: wide 3 V to 17 V
- Output current: 8 A
- 22 mΩ/10 mΩ low RDS(ON) internal power MOSFETs
- Quiescent current: 100 μA
- Output adjustable from 0.6 V
- High-efficiency synchronous mode operation
- Pre-biased start-up
- Fixed 700 kHz switching frequency
- Forced PWM operation
- External programmable soft-start time
- EN and power good for power sequencing
Read more: MPS’ MP8770C IS A 3 V TO 17 V, 8 A, SYNCHRONOUS STEP-DOWN CONVERTER WITH FORCED CCM
- What input voltage range does the MP8770C support?
The MP8770C supports an operating input range of 3 V to 17 V. - How much continuous output current can the MP8770C deliver?
It delivers up to 8 A of continuous output current. - What switching frequency does the MP8770C use?
The device uses a fixed 700 kHz switching frequency. - Does the MP8770C support pre-biased startup?
Yes, the MP8770C supports pre-biased start-up. - How is the MP8770C controlled for fast transient response?
It uses constant on-time (COT) control operation for very fast transient response and tight output regulation. - What protection features are included in the MP8770C?
Full protection features include short-circuit protection, overcurrent protection, undervoltage protection, and thermal shutdown. - Can the MP8770C's output voltage be adjusted?
Yes, the output is adjustable from 0.6 V upward using external feedback resistors. - Does the MP8770C require many external components?
No, it requires a minimal number of readily available, standard external components. - What package is the MP8770C available in?
It is available in a QFN-16 package measuring 3 mm x 3 mm. - What is the quiescent current of the MP8770C?
The quiescent current is 100 μA.
