SY21314DBC (SY7304DBC)

High Efficiency 33V, 4A, 1MHz Step Up Regulator

SY21314DBC High Efficiency 33V, 4A, 1MHz Step Up Regulator Datasheet

Parameters
Features
Description

Part number	SY21314DBC
Vin (min) (V)	3
Vin (max) (V)	33
Current limit (A)	4
Switching frequency (min)(kHz)	1000
Switching frequency (max)(kHz)	1000
Vout (min) (V)	3
Vout (max) (V)	33
Vref accuracy (±%)	2
Vout accuracy(±%)
Duty cycle (max)(%)	90
Iq (typ) (uA)	100
Features	Soft start
Package	QFN3×3-10
Operating temperature range(°C)	-40 to 125
Functional safety category

3V to 33V Input Voltage Range
33V Maximum Output Voltage
4A Main MOSFET Current Limit
15 µA Shutdown Current (Max.)
100 µA Quiescent Current (Typ.)
Low RDS(ON) for Internal N-Channel MOSFET: 120mΩ
1MHz Switching Frequency
Internal Soft-Start
±2% 0.6V Reference
Cycle-by-Cycle Peak Current Limit
Overtemperature Protection
RoHS-Compliant and Halogen-Free
Compact DFN3mmx3mm-10 Package

The SY21314 high efficiency step-up regulator operates using current mode control over a wide input voltage range from 3V to 33V. It integrates an N-channel MOSFET with low 120mΩ RDS(ON) to minimize conduction loss.

The 1MHz switching frequency and internal compensation reduce external inductor and capacitor sizes, and the built-in internal soft-start circuitry minimizes inrush current at startup. The device offers overcurrent and thermal shutdown protections.

The SY21314 is available in a compact DFN3x3-10 package.