SGM41283数据手册SGMICRO中文资料规格书

描述 Description

The SGM41283 is a high voltage non-synchronous Boost converter which integrates a 70V, 600mΩ, N-channel power FET and is capable of up to 1.1A switch current limit. The Boost converter adopts the fix frequency of 850kHz (TYP) peak current mode control for voltage regulation.
In addition, the SGM41283 integrates accurate current mirror with two selectable ratios of 10:1 and 2:1 for APD current monitoring.
The SGM41283 integrates various protection features such as Boost over-current protection, thermal shutdown, and APD current limit adjustment to protect the APD from optical power transients.
The SGM41283 is available in a Green TQFN-3×3-16L package. It operates over an ambient temperature range of -40℃ to +125℃.

特性 Features

• Input Voltage Range: 2.7V to 5.5V

• RDSON of Power FET: 0.6Ω

• Output Voltage Range: up to 70V

• Switch Current Limit: 1.1A

• Switching Frequency: 850kHz

• Internal Compensation and Soft-Start

• APD Current Monitoring Response Time: 50ns

• High-side APD Current Monitor with Less than ±5% Tolerance

• High-side Current Monitor Ratios: 10:1 and 2:1

• Thermal Shutdown Protection

• Programmable APD Over-Current Limit and Protection

• -40℃ to +125℃ Operating Temperature Range

• Available in a Green TQFN-3×3-16L Package

应用 Application

APD Bias

Optical Line Terminal
High Voltage Sensor Bias