NXP PMIC for i.MX 91, i.MX 93 and Simple Linux Platform

The PF9453 provides power supply solutions for IoT (Internet of Things), smart appliance, and portable applications where size and efficiency are critical, using four high efficiency step-down regulators, three LDOs, one 400 mA load switch and 32.768 kHz crystal oscillator driver.

One buck regulator supports Dynamic Voltage Scaling (DVS) along with programmable ramping up and down time. 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 four step-down regulators are designed to provide power for i.MX 91 and i.MX 93 processors and the associated DRAM memory.

Key features

• Four buck regulators - Dynamic voltage scaling on BUCK2
• Three linear regulators
• Power control IO
• ESD protection
• One 400 mA load switch with a built-in active discharge resistor and GPIO/I²C control
• 32.768 kHz crystal oscillator driver and buffer output
• Flexible power ON/OFF sequence, One Time Programmable (OTP) device configuration
• Built-in active discharge resistor
• Fm+ 1 MHz I²C Interface
• Longevity Program for a minimum of 10 years
• BUCK1: 0.6 V to 3.775 V, 25 mV step, 2000 mA
• BUCK2: 0.6 V to 2.1875 V, 12.5 mV step, 2700 mA (QFN) / 2000 mA (WLCSP)
• BUCK3: 0.6 V to 3.775 V, 25 mV step, 2000 mA
• BUCK4: 0.6 V to 3.775 V, 25 mV step, 2500 mA
• Monitor fault condition
• LDO_SNVS, always-on, 1.2 V to 3.4 V in QFN or 0.8 V to 3.0 V in WLCSP with 25 mV step, 10 mA
• LDO1, 0.8 V to 3.3 V with 25 mV step, 250 mA, voltage selection through SD_VSEL pin
• LDO2 (QFN only), 0.5 V to 1.95 V with 25 mV step, 200 mA
• Human Body Model (HBM) : ± 2000 V
• Charged Device Model (CDM) : ± 500 V
• Available in QFN and CSP packages

Applications

• Major home appliance
• Building security and surveillance
• EV Supply Equipment (EVSE)
• Industrial