LP8865CUQDGNRQ1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 Qualified for automotive applications:

– Temperature grade 1:

–40°C to +125°C, TA

• Integrated MOSFET for buck, buck-boost and

boost topology

– Wide input voltage: 4.5V to 65V

– Integrated typical 2.8A and 300mΩ MOSFET

– 400kHz fixed switching frequency

• High precision power FET dimming

– Analog dimming for U/V/W version

– Fast PWM dimming for X/Y/Z version

• Full protection features:

– LED open and short protection

– Cycle-by-cycle current limit

– Switching FET failure protection

– Thermal shutdown

2 Applications

• Automotive infotainment

• Automotive instrument clusters

• Heads-up displays(HUD)

• Automotive lighting

3 Description

The LP8865C-Q1 family is a low cost nonsynchronous

multi-topology solution with 4.5V to 65V

wide input range. By integrating the low-side NMOS

switch, the device is capable of driving LEDs with

high power density and high efficiency. The family

also supports common cathode connection and single

layer PCB design. The switching frequency is fixed

with 400kHz.

The LP8865C-Q1 family support PWM dimming by

configuring through the DIM input pins by means of

simple high and low signals or analog dimming by

configuring through the DIM input pins by means

of analog voltage signals. The device adopts an

adaptive off-time current mode control along with

smart and accurate sampling to enable fast PWM

dimming and achieve high-dimming ratio.

The LP8865C-Q1 family also provides multiple

systematic protections, including LED open and short,

switching FET open and short, sense resistor open

and short, and thermal shutdown.