UC2845L-Q1中文资料Automotive, 36V, 1A, 500KHz current mode PWM controller with 8.4V and 7.6V UVLO 50% duty cycle数据手册TI规格书

描述 Description

The UC284xL-Q1 control device is an automotive-grade pin-for-pin compatible improved version of the UC284xAQ/UC284xA-Q1 families. Providing the necessary features to control current-mode or switched-mode power supplies, this device provides improved features: higher VCC range at 36V, lower start-up current at 0.25mA, tighter operating current tolerance at 15mA max, and faster response on cycle-by-cycle current protection at 100ns. Output driver of UC284xL-Q1 is improved with shorter rise and fall time at 75ns max to reduce switching loss, and stronger driver capabilities with lower output low level farther from the FETs threshold voltage.

特性 Features

Improved output driver and lower operating/startup current from UC284xAQ/UC284xA-Q1

Optimized for off-line and DC-DC converters

Low start-up current (<0.5mA)

Trimmed oscillator discharge current

Automatic feedforward compensation

Pulse-by-pulse current limiting

Enhanced load response characteristics

Undervoltage lockout with hysteresis

Double pulse suppression

High-current totem pole output

Internally-trimmed bandgap reference

Up to 500kHz operation

Functional Safety-Capable

Document available to aid functional safety system design



AEC-Q100 qualified with the following results

Device temperature grade 1: –40°C to 125°C

Device HBM classification level 2: ±2kV

Device CDM classification level C6: ≥1000 V