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SY2A22404 - Synchronous Step-Down Regulator

Description

The SY2A22404 high-efficiency synchronous step-down DC-DC converter operates over a wide input voltage range (4.2V to 40V) and can deliver 3.5A load current.

The device integrates the main switch and synchronous switch with very low RDS(ON) to minimize conduction loss.

Features

  • an internal soft-start to limit inrush current during power-on. The SY2A22404 is available in a compact 8-pin SO8E package. Features.
  • 4.2.
  • 40V Input Voltage Range.
  • 3.5A Output Current Capability.
  • Low RDS(ON) for Internal Switches:115mΩ Top, 80mΩ Bottom.
  • 18µA Quiescent Current.
  • Internal Compensation.
  • Internal 1ms Soft-Start Limits Inrush Current.
  • Adjustable Switching Frequency Range: 300kHz to 2.2MHz.
  • ±2% 0.6V Reference over the -40°C to +125°C Temp.

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Datasheet preview – SY2A22404

Datasheet Details

Part number SY2A22404
Manufacturer Silergy
File Size 959.42 KB
Description Synchronous Step-Down Regulator
Datasheet download datasheet SY2A22404 Datasheet
Additional preview pages of the SY2A22404 datasheet.

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Full PDF Text Transcription

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SY2A22404 High-Efficiency, Fast-Response, 3.5A, 40V Input Synchronous Step-Down Regulator General Description The SY2A22404 high-efficiency synchronous step-down DC-DC converter operates over a wide input voltage range (4.2V to 40V) and can deliver 3.5A load current. The device integrates the main switch and synchronous switch with very low RDS(ON) to minimize conduction loss. The SY2A22404 employs a peak-current-mode control strategy with a constant switching frequency that is adjustable from 300kHz to 2.2MHz using an external resistor. When the internal clock becomes active, the top FET switches on. When the top FET current-sense signal reaches internal VCOMP, the top FET switches off and the bottom FET switches on.
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