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PCA9451AHN PDF预览

PCA9451AHN

更新时间： 2024-11-27 15:19:19
品牌 Logo 应用领域
恩智浦 - NXP 集成电源管理电路
页数 文件大小 规格书
76页 1756K
描述
PMIC supporting i.MX 93

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PCA9451AHN 数据手册

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PCA9451A  
Power management IC for i.MX 93x application processor  
Rev. 2.0 — 17 April 2023  
Product data sheet  
1 General description  
The PCA9451A is a single chip Power Management IC (PMIC) designed to support i.MX 93x family processor  
in both 1 cell Li-Ion and Li-polymer battery portable application and 5 V adapter non-portable applications.  
The device provides six high efficiency step-down regulators, three 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)1 along with programmable ramping up and down time. The buck regulators support remote sense to  
compensate IR drop to load from buck regulator, allowing better performance to meet the demand for accuracy  
in critical supply rails. This device is characterized across -40 °C to 105 °C ambient temperature range, making  
it a good option for the industrial, extended-industrial, and consumer markets.  
The six step-down regulators are designed to providing power for i.MX 93x application processor and the  
associated DRAM memory. The LDO1 features very low quiescent current to provide power for Secure Non-  
Volatile Storage (SNVS) since this LDO is always ON when input voltage is valid. Low quiesce (Low IQ) is  
important in low voltage systems since it enables longer battery life without sacrificing performance.  
The PCA9451A also integrates a 2-bit logic translator, dual supply translating transceiver with auto direction  
sensing, enabling bidirectional voltage level translation. It can be used as I2C level translator. PCA9451A also  
includes a 400 mA load switch supplying 3.3 V power supply to SD card, which has an internal discharge  
resistor, used to discharge the electric charge stored in the output when the equipment is turned off, for safety  
reasons.  
The PCA9451A is offered in an industrial friendly 56-pin HVQFN package, 7 mm x 7 mm, 0.4 mm pitch.  
2 Features and benefits  
• Six high-efficiency step down regulators  
– One 4 A dual phase buck regulator with DVS feature and remote sense  
– One 2 A buck regulator with DVS feature and remote sense  
– One 3 A buck regulator  
– One 2 A buck regulator  
– One 1.5 A buck regulator  
• Three linear regulators  
– One Low IQ 10 mA LDO  
– One 150 mA LDO  
– One 200 mA LDO  
• 400 mA load switch with a built-in active discharge resistor  
• 32.768 kHz crystal oscillator driver and buffer output  
• Two channel logic level translator  
• Power control IO  
– Power ON/OFF control  
1 To reduce overall power consumption, processor core voltages can vary depending on the mode or activity level of the processor.  
DVS is used to support such voltage variation requirements by dynamically changing the output voltage of the regulator.  
 
 
 
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