SY21282QDC

High Efficiency 1MHz,16V,6A Synchronous Step Up Regulator with Accurate Output Current Limit

SY21282QDC High Efficiency 1MHz,16V,6A Synchronous Step Up Regulator with Accurate Output Current Limit Datasheet

Parameters
Features
Description

Part Number	SY21282QDC
Vin_min (V)	3
Vin_max (V)	9
Limit Current (A)	6
Fsw (MHz)	1
Vo_max (V)	13
Vref Accuracy	±2%
Rdson1	80
Rdson2	40
Features / Special Function	Power Good Indicator
Package	QFN3x3-16

3V to 9V Input Voltage Range
6A (Min.) Main MOSFET Current Limit
7 µA Shutdown Current (Max.)
600 µA Quiescent Current (Typ.)
Programmable Output Current Limit
Low RDS(ON) for Internal N-Channel MOSFET: 80mΩ Main, 40mΩ Rectifier, 40mΩ Disconnection
Synchronous Rectification for High Efficiency
Pseudoconstant 1MHz Frequency
Enable Control
Input Voltage UVLO
Output Overvoltage Protection
Overtemperature Protection
Output Short-Circuit Protection
Power-Good Indicator
True Shutdown Function
RoHS-Compliant and Halogen-Free
Compact QFN3mm×3mm-16 Package

The SY21282 high efficiency synchronous step-up regulator operates using adaptive constant off-time and current mode control, and supports a wide input voltage range from 3V to 9V. It integrates switches with low RDS(ON) to minimize conduction loss.

The SY21282 features cycle-by-cycle peak current limit, output short-circuit protection, and true shutdown. It also provides enable control and power-good indicator for system power sequencing. The 1MHz pseudo-constant frequency reduces the output voltage ripple and permits smaller external capacitors and inductor.

The SY21282 is available in a compact QFN3×3- 16 package.