SY21299DBC (SY7219DBC)

High Current Step Up Regulator

SY21299DBC High Current Step Up Regulator Datasheet

Parameters
Features
Description

Part number	SY21299DBC
Vin (min) (V)	3
Vin (max) (V)	5.5
Current limit (A)	9
Switching frequency (min)(kHz)
Switching frequency (max)(kHz)
Vout (min) (V)	3
Vout (max) (V)	36
Vref accuracy (±%)	2
Vout accuracy(±%)
Duty cycle (max)(%)
Iq (typ) (uA)	380
Features	Soff start
Package	DFN3×3-10
Operating temperature range(°C)	-40 to 125
Functional safety category

3V to 5.5V Input Range
30V Maximum Output Voltage
1 µA Shutdown Current (Typ.)
380 µA Quiescent Current (Typ.)
Programmable Peak Current Limit
Programmable Constant Off-Time
Low RDS(ON) for Internal 9A N-Channel MOSFET: 65mΩ
Internal Soft-Start
RoHS-Compliant and Halogen-Free
Compact DFN3mm×3mm-10 Package

The SY21299 high efficiency step-up regulator operates using current mode control over an input voltage range from 3V to 5.5V. It integrates an N-channel MOSFET with low 65mΩ RDS(ON) to minimize conduction loss. A built-in internal softstart circuitry minimizes inrush current at startup.

The device offers cycle-by-cycle overcurrent and thermal shutdown protections.

The SY21299 is available in a compact DFN3×3- 10 package