PCA9450集成電路（IC）的電源管理-專用規(guī)格書PDF中文資料

description

PCA9450 is a single chip Power Management IC (PMIC) specifically designed to

support i.MX 8M family processor in both 1 cell Li-Ion and Li-polymer battery portable

application and 5 V adapter non-portable applications. It supports various memory types

(DDR4/LPDDR4/DDR3L, etc.) via system UBOOT configuration, which does not require

hardware change.

The device provides six high efficiency step-down regulators, five LDOs, one 400 mA

load switch, 2-channel level translator and 32.768 kHz crystal oscillator driver.

Three buck regulators support Dynamic Voltage Scaling (DVS) feature along with

programmable ramping up and down time and those buck regulators support remote

sense to compensate IR drop to load from buck regulator. This device is characterized

across -40 °C to 105 °C ambient temperature range.

Six step-down regulators are designed to provide power for i.MX 8M application

processor and DRAM memory. Two LDOs, LDO1 and LDO2, feature very low quiescent

current to provide power for Secure Non-Volatile Storage (SNVS) since these LDOs are

always ON when input voltage is valid.

PCA9450 integrates logic translator which is a 2-bit, dual supply translating transceiver

with auto direction sensing. It enables bidirectional voltage level translation. It can be

used as I2C level translator. 400 mA load switch is to supply 3.3 V power supply to SD

card, which has internal discharge resistor.

PCA9450 has three versions: PCA9450AA is companion PMIC for (i.MX 8M Mini),

PCA9450B is companion PMIC for i.MX 8M Nano and PCA9450C is companion PMIC

for i.MX 8M Plus.

The PCA9450 is offered in 56-pin HVQFN package, 7 mm x 7 mm, 0.4 mm pitch.

Features

? Six high-efficiency step-down regulators

– Three 3 A buck regulators with DVS feature and remote sense

– PCA9450AA – Three 3 A buck regulators

– PCA9450B – Two 3 A buck regulators

– PCA9450C – 6 A dual-phase buck regulator and 3 A buck regulator

? One 3 A buck regulator

? Two 2 A buck regulators

? Five linear regulators

– Two 10 mA LDOs

– One 150 mA LDO

– One 200 mA LDO

– One 300 mA LDO

Applications

? IoT Devices

? Tablet

? Electronic Point of Sale (ePOS)

? Industrial application