TPS628522-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 qualified for automotive applications

– Device temperature grade 1:

–40°C to +125°C TA

• Wettable flanks

• Designed for low EMI requirements

– Optional pseudo-random spread spectrum

reduces peak emissions

• TJ = –40°C to +150°C

• Family of 1A, 2A, and 3A (continuous) converters

• Input voltage range: 2.7V to 6V

• Quiescent current: 21μA typical

• Shutdown current: 1.5μA typical

• Output voltage from 0.6V to 5.5V

• Output voltage accuracy ±1% (PWM operation)

• Options of forced PWM or PWM, PFM operation

• Switching frequency in PWM: 2.25MHz

• Adjustable soft start-up to 10ms

• Precise ENABLE input allows:

– User-defined undervoltage lockout

– Exact sequencing

• Active output discharge

• Foldback overcurrent protection – optional

• Power-good output with window comparator

• Low profile package with 0.75mm nominal

package height

2 Applications

• Advanced driver assistance systems (ADAS)

camera

• ADAS sensor fusion and surround view ECU

• Hybrid and reconfigurable instrument cluster

• Head unit and telematics control unit

• External audio amplifier

3 Description

The TPS62852x-Q1 are a family of pin-to-pin, 1A,

2A, and 3A, high efficiency, easy-to-use, synchronous

step-down DC/DC converters. These devices are

based on a peak current mode control topology and

support tight switching frequency variation. These

devices are designed for automotive applications

such as infotainment and advanced driver assistance

systems. Low resistive switches allow up to 3A

continuous output current. In the TPS62852x-Q1, the

switching frequency is internally fixed at 2.25MHz.

The TPS62852x-Q1 automatically selects pulse width

modulation (PWM) for higher power demand and

pulse frequency mode (PFM) for power saving

operation. This selection maintains high efficiency

across the whole load range. The device exists also

in options with forced PWM in cases where frequency

stability requirements dominate. The family provides a

1% output voltage accuracy over the full temperature

range in PWM mode, which helps designing power

supplies for devices with very tight supply voltage

accuracy requirements.

The TPS62852x-Q1 is available in an 8-pin, 2.0mm ×

1.5mm, WSON package.