Datasheet > PCA9481AUK

PCA9481AUK

更新时间： 2024-11-29 15:19:11

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
6页	128K
描述
8-channel ultra-low voltage, Fm+ I2C-bus switch with reset

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PCA9481AUK 数据手册

PCA9481AUK

10 A 2:1/1:2/1:1 mode switched capacitor direct charger

Rev. 1.0 — 23 August 2022

Product short data sheet

1 General description

The PCA9481AUK is a highly-integrated switched-capacitor converter with an embedded

OVPFET and external FET control, targeted to provide two times the output current

for fast charging applications with a 1-cell battery. The device works in 2:1 switching

operation with very high efficiency (>97 %, at V_VOUT= 4 V, I_VOUT= 8 A), in 1:2 switching

operation, or in 1:1 mode with forward and reverse direction.

As absolute maximum voltage for each VIN and VOUT, VIN input is designed to support

up to 16.5 V with no pre-biased scheme and 20 V with the pre-bias enabled for USB

VBUS; VOUT input is designed to support up to 7 V with the pre-bias enabled for a 1-cell

battery application.

The device provides multiple safety schemes such as OV (Over-Voltage), UV (Under-

Voltage), switching pin short, thermal shutdown and others.

The PCA9481AUK also has a leader/follower function built in that allows two devices to

be used seamlessly in hand-held applications.

The device features all functions with I²C-bus interface, with up to 1 MHz speed.

2 Features and benefits

• Integrated 2:1 or 1:2 unregulated switched capacitor and bidirectional bypass mode

with switched-capacitor converter, >97 % efficiency at 8 A output current

• 20 V tolerant DC voltage on VIN and 7 V on VOUT

• OVP FET with IVIN Regulation and Battery voltage/current loop

• Dual-phase switched-capacitor to optimize efficiency and number of components

• Minimized power dissipation schemes embedded on an internal regulator

• Multiple Safety Schemes

– Over-temperature protection (OTP)

– Over-voltage protection (OVP)

– Under-voltage protection (UVP)

– Input/output or flying capacitor short detection

– Watchdog timers

– Safety switching threshold detection

• 1 Mbit/s I²C-bus target interface

• Available in WLCSP70 package

3 Applications

Smart phone, tablet and other portable electronic devices with high voltage direct

charging.

12 3 4 5 6

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