R5975AD中文资料Up to 2.5 A step down switching regulator数据手册ST规格书

描述 Description

The R5975AD is a step-down monolithic power switching regulator with a minimum switch current limit of 3.1 A, it is therefore able to deliver up to 2.5 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the RTHJ-Adown to approximately 40 °C/W. The device uses an internal P-channel DMOS transistor (with a typical RDS(on)of 250 mΩ) as switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 500 kHz. The large ambient temperature range makes it ideal for aerospace and defense applications. Pulse-by-pulse current limit with the internal frequency modulation offers an effective constant current short-circuit protection.

特性 Features

General features2.5 A DC output current
Operating input voltage from 4 V to 36 V
3.3 V / (±2%) reference voltage
Large ambient temperature range: -40 °C to 125 °C
Output voltage adjustable from 1.235 V to 35 V
Low dropout operation: 100% duty cycle
500 kHz internally fixed frequency
Voltage feed-forward
Zero load current operation
Internal current limiting
Inhibit for zero current consumption
Synchronization
Protection against feedback disconnection
Thermal shutdown

Aerospace and defense featuresSuitable for use in aerospace and defense applications
Dedicated traceability and part marking
Production parts approval documents available
Adapted extended life time and obsolescence management
Extended product change notification process
Designed and manufactured to meet sub-ppm quality goals
Advanced mold and frame designs for superior resilience in harsh environments (acceleration, EMI, thermal, humidity)
Extended screening capability on request