SY21031 Datasheet - Silergy

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SY21031 0.8A Asynchronous Step-Down Regulator

SY21031 High-Efficiency, 1.2MHz, 55V Input, 0.8A Asynchronous Step-Down Regulator General .
The SY21031 high-efficiency asynchronous stepdown DC/DC regulator is using an adaptive constant off-time architecture, and can deliver 0.

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Datasheet Details

Part number:

SY21031

Manufacturer:

Silergy

File Size:

1.16 MB

Description:

0.8A Asynchronous Step-Down Regulator

Features

* 4.5V to 55V Input Voltage Range
* Up to 0.8A Output Current
* Low RDS(ON) for Internal N-Channel Power FET: 700mΩ
* 1.2MHz Pseudoconstant Switching Frequency
* Adaptive Constant Off-Time Control
* Internal Soft-Start Limits Inrush Current
* ±1% 0.6V Reference
* Hicc

Applications

* Non-Isolated Telecommunication Buck Regulator
* Secondary High-Voltage Post Regulator
* Automotive Systems Typical Application CBS VIN:4.5-55V CIN BS IN LX EN FB ON/OFF GND L1 D1 VOUT RH CFF COU T RL Figure 1. Typical Application Circuit Efficiency (%) 100 90 80 70 6

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SY21031 0.8A Asynchronous Step-Down Regulator Silergy

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