TPS62A02-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• 2.5V to 5.5V input voltage range

• AEC-Q100 qualified for automotive applications

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

TA

• 0.6V to VIN adjustable output voltage range

• 42mΩ and 27.5mΩ low RDSON switches

• < 28μA quiescent current

• 1.5% feedback accuracy (–40°C to 125°C)

• 100% mode operation

• 2.2MHz switching frequency

• Power save mode or FPWM parts available

• Power-good output pin

• Short-circuit protection (HICCUP)

• Internal soft start-up

• Active output discharge

• Thermal shutdown protection

• Pin-to-pin compatible with the TPS62A01-Q1

• CIN of 4.7μF, COUT of 22μF and 1μH inductor

2 Applications

• Front camera

• Surround view system ECU

• Automotive cluster display

3 Description

The TPS62A02-Q1 and TPS62A02A-Q1 are

synchronous, step-down, buck DC-DC converters

optimized for high efficiency and compact design size.

The devices integrate switches capable of delivering

an output current up to 2A. At medium to heavy loads,

the devices operate in pulse width modulation (PWM)

mode with 2.2MHz switching frequency. At light load,

the TPS62A02-Q1 automatically enters a power save

mode (PSM) to maintain high efficiency over the

entire load current range. In shutdown, the current

consumption is minimal as well. The TPS62A02AQ1

variant of this device operates in forced PWM

across the whole load current range and maintains a

constant switching frequency.

The TPS62A02x-Q1 devices provide an adjustable

output voltage through an external resistor divider. An

internal soft-start circuit limits the inrush current during

start-up and a power good signal indicates when the

output voltage is at target. Overcurrent protection and

thermal shutdown protect application and device. The

devices are available in an SOT-563 package.