SA24406EXNQ

High Efficiency, 36V Input, 6A Synchronous Step-Down Regulator

SA24406EXNQ High Efficiency, 36V Input, 6A Synchronous Step-Down Regulator Datasheet

Parameters
Features
Description

Part Number	SA24406EXNQ
Vin_min (V)	4
Vin_max (V)	36
Vo_min (V)	1
Io_max (A)	6
Vref Accuracy	±1%
Fsw (MHz)	0.3-2.2
Iq (uA)	11000
Package	QFN3.5x4-14 (Wettable)
Protection Mode	Hiccup SCP
Features / Special Function	Cycle-by-cycle current limit

• 4V to 36V Input Voltage Range

• 6A Output Current Capability

• Low RDS(ON) for Internal MOSFETs: 41mΩ Top, 21mΩ Bottom

• 11mA Typical Quiescent Current

• 1µA Typical Shutdown Current

• 300kHz to 2.2MHz Switching Frequency

• Synchronization to External Clock

• Spread Spectrum Function

• Hiccup Mode Output Short-Circuit Protection

• EN On/Off Control with Accurate Threshold

• Cycle-by-Cycle Peak Current Limit

• Power Good Indicator

• FCCM Operating Mode at Light Load

• 1V ±1% Reference Voltage Over -40˚C to 150˚C Temperature Range

• Package: QFN3.5×4-14 with Wettable Flanks

• Automotive AEC- Q100 Grade 1 Certified

The SA24406E is a high efficiency synchronous step-down DC-DC regulator with internal power and synchronous rectifier MOSFETs. It operates using fixed frequency and peak current control over a wide input voltage range of 4V to 36V, and can deliver up to 6A of continuous output current.

The SA24406E is specially designed with a symmetric QFN package and adjustable LX rise time to achieve good EMI performance. The switching frequency can be adjusted from 300kHz to 2.2MHz, or synchronized to an external clock. The frequency can be selected to meet application EMI limits and to avoid noise in important frequency bands.

The SA24406E offers excellent efficiency over a wide range of applications by providing internal 41mΩ power and 21mΩ synchronous rectifier MOSFETs and an external bias input. The 1μA shutdown supply current allows the device to be used in battery powered applications. The SA24406E ensures safe operation in all operating conditions, providing cycle-by-cycle current limit, input undervoltage lockout, internal soft-start, output undervoltage and overvoltage protection, and thermal shutdown.

The SA24406E is available in a QFN3.5mm×4mm-14 pin package.