NXP Semiconductors PCA9485

The PCA9485UK is a highly integrated switched-capacitor converter with an embedded OVPFET and dual external FET controls, targeted to provide the quadruple output current for the fast-charging applications with a 1-cell battery. The device works in 4:1 switching operation with a very high efficiency (around 96.8%, at V_OUT=4.5 V, V_OUT=8 A) in 2:1 and 1:2 switching operation or in 1:1 mode with forward and reverse direction.

Key features

• Available in 110 WLCSP (110 WLCSP with 0.4 mm pitch) package
• Proven efficiency:
  • 96.83% @ 4.5 V_out, 8 A, 800 KHz (4:1)
  • 95.57% @ 4.5 V_out, 13 A, 800 KHz (4:1)
  • 97.33% @ 4.5 V_out, 8 A, 200 KHz (2:1)
  • 96.73% @ 4.5 V_out, 10 A, 200 KHz (2:1)
• Power 65 W
• Output current 13 A(4:1), 10 A(2:1), 5 A(1:1)
• Operating mode (FWD) 4:1 / 2:1 / 1:1
• Operating mode (Reverse) 1:4 / 1:2 / 1:1
• Frequency Range 200 ~ 1600 KHz in 100 KHz steps
• External FET control dual (VBUS/VWPC) supporting GaN
• External FET Turn-Off time response Max 100ns
• Protection current OCP, RCP, FAST and OCP
• Protection external FET OVP, VDROP and Current Source Control
• High Accuracy 10 channels 12-bit ADC subsystem
• Fm+ 1 Mbit/s I²C-bus
• Efficient and fast charging w/ USB PD Travel Adapter (TA)

Applications

• PCA9485 is used for fast-charging applications with a 1-cell battery
• Mobile/Smartphone
• Portable electronic devices with high-voltage direct charging
• Tablet