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AX3811A - Synchronous Step-Down Regulator

General Description

AX3811A develops high efficiency synchronous stepdown DC-DC converter capable of delivering 2A load current.

AX3811A operates over a wide input voltage range from 4.35V to 18V and integrates main switch and synchronous switch with very low R DS(ON) to minimize the conduction loss.

Key Features

  • Low RDS(ON) for internal switches (top/bottom):140/130 mΩ 4.35-18V input voltage range 2A load current capability Instant PWM architecture to achieve fast transient responses Internal softstart limits the inrush current - 2% 0.6V reference - RoHS Compliant and Halogen Free - Compact package: SOT23-6.

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Datasheet Details

Part number AX3811A
Manufacturer AXElite
File Size 456.03 KB
Description Synchronous Step-Down Regulator
Datasheet download datasheet AX3811A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AX3811A High Efficiency Fast Response, 2A, 18V Input Synchronous Step-Down Regulator  GENERAL DESCRIPTION AX3811A develops high efficiency synchronous stepdown DC-DC converter capable of delivering 2A load current. AX3811A operates over a wide input voltage range from 4.35V to 18V and integrates main switch and synchronous switch with very low R DS(ON) to minimize the conduction loss. AX3811A adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500 kHz under heavy load conditions to minimize the size of inductor and capacitor.  FEATURES Low RDS(ON) for internal switches (top/bottom):140/130 mΩ 4.