MA5620
MA5620 is 38V Synchronous Buck Controller manufactured by Major Power Technology.
DESCRIPTION
The MA5620 is a synchronous buck controller. The device need externals high-side and external low-side power MOSFETs, and provides higher than 5A continuous load current and a wide input voltage from 8V to 40V. Current mode control provides fast transient response and cycle-by-cycle current limit.
An internal soft-start prevents inrush current at turn-on, this device available in small TDFN-12L (3x3) package, provides a very pact solution with minimal external ponents.
FEATURES
- Wide 8V~40V Operating Input Range.
- Externals high-side / low-side Power MOSFET Switches.
- Output Adjustable : VFB (1.00V±2%).
- Up to 97% Efficiency.
- Internal Soft-Start and Fixed 160KHz Frequency.
- Duty on ratio : 0% to 91% PWM control.
- Cycle-by-Cycle Current Limit(or called Over Current Protection, OCP)
- Thermal Shutdown Protection(or called Over Temperature Protection, OTP)
- Input Under/Over Voltage Lockout.(UVLO/OVLO)
- FB Over Voltage Protection.(OVP)
APPLICATION CIRCUIT
EC1 220µF
RS1 10mΩ
C7 100n F
C6 100n F
R4 10Ω
SENSE VIN
SGND MA5620
PAD(GND)
Q1 40N03 BS GH
VREF
P CS2 CS1
PGND FB
Q2 40N04
C5 100n F
C3 3.3n F
R3 15kΩ
CCS1 RCS2 RCS1 CCS2 10Ω 10Ω 22n F
C4 100n F
L1 33µ H/5.5A
C1 10µ...