Wireless Power Receiver Control IC S-8471 Series

Description

The S-8471 Series is Wireless Power Receiver Control IC, which is configured with an overvoltage detection circuit, a high temperature detection circuit, an ON / OFF circuit, etc.

Features

• Current consumption

  During operation: I_SS1 = 30 μA typ.

  During power-off: I_SS2 = 1.0 μA max.

• Overvoltage detection voltage range

  4.00 V to 5.50 V, selectable in 50 mV step

• Overvoltage detection accuracy

  ±2.0%

• ON / OFF pin control logic is selectable

  Active “H”, active “L”

• ON / OFF pin internal resistor connection is selectable

  Unavailable, pull-up, pull-down

• Built-in ON / OFF circuit

• Over temperature protection function

  Available by connecting a thermistor to the TH pin.

• Operation temperature range

  Ta = −40°C to +85°C

• Lead-free (Sn 100%), Halogen-free

Applications

• Device for wireless power

• Small-sized wireless charging system

Wireless Power Receiver Control IC With Charge Function S-8472/8473 Series

Description

The S-8472/8473 Series is Wireless Power Receiver Control IC, which is configured with an overvoltage detection circuit, a charge current control circuit, a VBAT voltage detection circuit, a UVLO circuit, high temperature / low temperature detection circuit, etc. This IC has a charge function to a small lithium-ion rechargeable battery.

Features

• Power supply voltage

  Vdd = 2.2 V to 5.0 V

• Current consumption during charge operation

  I_SS1 = 250 μA typ.

• VBAT pin current consumption during power-down

  I_PDN = 1.0 μA max.

• UVLO detection voltage

  V_UVLO− = 2.0 V typ.

• Charge function to a small lithium-ion rechargeable battery

  Charge current: I_LIM = 33 mA typ.

  Precharge current: I_PRE = 3.3 mA typ.

  Precharge completion voltage: 2.4 V to 3.4 V (50 mV step)

  Charge completion voltage: 4.0 V to 4.5 V (50 mV step)

  Recharge start voltage: 3.6 V to 4.45 V

  Short-circuit detection voltage: 1.5 V to 2.0 V (50 mV step)

  Charge timer function:

  The charge operation stops after the elapse of 4.0 hours. (C_CT = 4.7 nF)

  The time is settable by connecting an external capacitor to the CT pin.

• High temperature / low temperature protection function

  Available by connecting a thermistor to the TH pin.

• Status display function

  Available by connecting an external LED to the STATUS pin.

  During charge operation: Lighting

  During charge operation stop: Lights-out

  During error detection: Blinking

• Operation temperature range

  Ta = −40°C to +85°C

• Lead-free (Sn 100%), Halogen-free

Applications

• Device for wireless power

• Small-sized wireless charge system

The S-8474 Series is Wireless Power Transmitter Control IC, which is configured with an ON time control circuit, an OFF time control circuit, a reception detection circuit, a UVLO circuit, a high temperature detection circuit, etc.

Features

• Power supply voltage

  V_dd = 4.5 V to 6.5 V

• Current consumption

  During operation: I_SS1 = 200 μA typ.

• During standby: I_STB = 3.0 μA max.

• U_VLO detection voltage

  V_UVLO− = 4.1 V typ.

• tON time is settable by connecting an external resistor to the RTON pin.Power saving is possible by intermittent operation during standby time of a receiver module.

  Active time: t_ACT = 5.0 ms typ.

  Sleep time: t_SLEEP = 25.0 ms typ.

• TH pin detection voltage is selectable

  0.667 V, 0.577 V, 0.500 V, 0.429 V, 0.370 V

• Built-in reception detection circuit

• Status display function

  Available by connecting an external LED to the STATUS pin.

  Continuous operation mode: Lighting

  Intermittent operation mode: Lights-out

  High temperature protection mode: Blinking

• Over temperature protection function

  Available by connecting a thermistor to the TH pin.

• Operation temperature range

  Ta = −40°C to +85°C

• Lead-free (Sn 100%), Halogen-free

Applications

• Device for wireless power

• Small-sized wireless charging system