SA24492TLQ

High Efficiency, 36V Input, 2A Synchronous Step Down Regulators

Parameters
Features
Description

Part Number	SA24492TLQ
Vin_min (V)	4.5
Vin_max (V)	36
Vo_min (V)	0.6
Io_max (A)	2
Vref Accuracy	±1%
Fsw (MHz)	0.3-2.2
Iq (uA)	18
Package	QFN2x2-12
Protection Mode	Hic-cup SCP
Features / Special Function	Thermal Shutdown and Auto Recovery

• Low RDS(ON) for Internal Switches (Top/Bottom): 130/75mΩ

• 4.5-36V Input Voltage Range

• Low quiescent current: IQ = 18 µA (Typ.)

• Internal Compensation

• Internal 1ms Soft-start Limits the Inrush Current

• Adjustable Switching Frequency Range: 300kHz to 2.2MHz

• Light Load Operating Mode: PFM

• Output Current Capability: 2A

• ±1% 0.6V Reference Over -40°C~125°C

• Cycle-by-cycle Peak Current Limit

• Short-Circuit Protection

• Spread Spectrum Function

• Thermal Shutdown and Auto Recovery

• Compact Package: QFN2×2-12

• Automotive AEC- Q100 Grade 1 Qualified

• MSL Rating: MSL1

The SA24492 is a high-efficiency synchronous step-down DC-DC converter capable of delivering a load current of 2A. It operates over a wide input voltage range of 4.5V to 36V and integrates main and synchronous MOSFET switches with very low RDS(ON) to minimize conduction loss.

The SA24492 uses a peak current control architecture. The switching frequency is adjustable from 300kHz to 2.2MHz using an external resistor. The SA24492 features ultra-low quiescent current to achieve high efficiency under light load conditions. Additionally, the internal soft-start function limits inrush current during power-up.

The SA24492 is available in a QFN2×2-12 Package.