SY2A21731BQDQ (SA47302BQDQ)

Automotive Camera PMIC

SY2A21731BQDQ Automotive Camera PMIC Datasheet

Parameters
Features
Description

Part number	SY2A21731BQDQ
Vin (min) (V)	4
Vin (max) (V)	16
Channel(#)	4
Package	QFN3×3-16
Features	Spread spectrum frequency modulation
Application	Automotive camera modules

· 4V to 16V Input Voltage Range

· 2.2MHz Fixed Switching Frequency

· Primary Synchronous Buck Converter (Buck 1)

- Fixed Output Voltage: 3.3V/3.8V (optional)

- Maximum Continuous Output Current: 1.5A

- Low RDS(ON) Switches: 220mΩ High Side/120mΩ Low Side

· Secondary Synchronous Buck Converter (Buck 2)

- Fixed Output Voltage: 1.1V/1.2V (optional)

- Maximum Continuous Output Current: 1.5A

- Low RDS(ON) Switches: 220mΩ High Side/180mΩ Low Side

· Secondary Synchronous Buck Converter (Buck 3)

- Fixed Output Voltage: 1.8V

- Maximum Continuous Output Current: 1A

- Low RDS(ON) Switches: 320mΩ High Side/220mΩ Low Side

· Secondary LDO

- Output Voltage: 2.8V/2.9V/3.3V (optional)

- Maximum Output Current: 300mA

· Spread Spectrum Frequency Modulation

· AEC-Q100 Grade 1 Qualified

· Compact Package: QFN3mm×3mm-16, Wettable Flank

The SY2A21731B is a highly integrated PMIC that consists of one primary DC-DC buck regulator (Buck 1), two secondary DC-DC buck regulators (Buck 2 and Buck 3), and one secondary LDO. It is designed to power automotive camera modules and can operate across a wide input voltage range from 4V to 16V (absolute maximum of 18V).

All three DC-DC converters use fixed frequency peak current control. The operating frequency is set to 2.2MHz (typ) in order to avoid generating noise in the AM radio band. A spread-spectrum function for the internal clock is integrated to achieve good EMI performance. The low voltage BUCK converters operate out of phase (180 degrees phase shift) to reduce crosstalk between channels.

The SY2A21731B features protection against input overvoltage (OVP), buck and LDO output overvoltage, buck overcurrent (OCP), and overtemperature (OTP).

The SY2A21731B is available in a QFN3×3 -16 package.