RN5T618
POWER MANAGEMENT SYSTEM DEVICE
RN5T618
POWER MANAGEMENT SYSTEM DEVICE
POWER MANAGEMENT SYSTEM DEVICE
This IC is the power management IC for GPS-PND/MID. It integrates three high-efficiency step-down DCDC converters, seven low dropout regulators, power control logic, Li-ion Battery Charger, I2C-Bus Interface, voltage detections, thermal shut-down, and etc.
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Features
System
- I2C-Bus interface @3.4MHz and 400kHz
- Detector Function (System/IO/Battery-Voltage-detector, UVLO)
- Thermal Shutdown Function
- Watchdog timer
- Power on key input for System's power up
- Power on reset output for CPU
- Flexible power-on/off sequence by OTP
- Flexible DCDCx and LDOx default-on/off control by OTP
High Efficiency Step-down DC/DC Converters
- DC/DC10.6-3.5V Max 3000mA
- DC/DC20.6-3.5V Max 2000mA
- DC/DC30.6-3.5V Max 2000mA
- Soft-start circuit
Low Drop Voltage Regulators
- LDO10.9-3.5V Max 300mA
- LDO20.9-3.5V Max 300mA
- LDO30.6-3.5V Max 300mA
- LDO40.9-3.5V Max 200mA
- LDO50.9-3.5V Max 200mA
- LDORTC11.7-3.5V Max 10mA (AlwaysOn, For coin battery)
- LDORTC20.9-3.5V Max 10mA (AlwaysOn)
- Over current Protection and Short circuit Protection.
Li-ion Battery Charger
- Supports AC adapter charging and USB charging in an individual port
- With the current limit protection and charge current control.
- The system can power on even when Li-ion Battery is low voltage or open.
- Rapid timer and Trickle timer.
- Power-path control.
- Over temperature protection
Fuel Gauge
- 12-bit resolution.
- 1 second integration.
ADC
- 12-bit resolution A/D converter
- Eight channels: LIMMON, VADP, VUSB, VBAT, VSYS, THERMBAT and two external(GPIO) pins.
- Single/Auto conversion mode
- Detect high/low thresholds which can be set
4ch-GPIO
- Supports interrupt function (level/edge) for input signals
- Outputs power-on signal for external devices
- Power on/off input for System's power up/down
- DCDCx and LDOx can be controlled by external input
- GPIO2 can output LDORTC2
- GPIO0 and GPIO1 have input to ADC for voltage monitor
- GPIO0 and GPIO1 have maximum 15mA sink for LED.
Interrupt Controller (INTC)
Package
Process
- CMOS
Applications
- Portable Device (Tablet, Smart Phone, MID, GPS-PND etc.)
- Information Appliance (STB, HDMI-Dongle etc.)