RC5T7315

Power management LSI

RC5T7315 is the Power management LSI that integrates Regulators, Battery Charger, and RTC in one chip.

Data Sheet Package Info.
RC5T7315
Rev.1.0 (Nov.15,2012)
CSP0606-120
  • Power Supplies
  • 13 Linear Regulators
  • Five Voltage Detectors (DET1, DETIO, DET2, UVLO, and SHDET)
  • Reference Voltage Source
  • 3ch Step-down DCDC Converters
  • Serial Interface
  • The interface circuit with CPU consists of 16-bit serial register (8-bit command and 8-bit address), the address decoder, and the transmitting register (8 bits).
  • GPIO
  • THIS BLOCK IS COMPOSED OF 14 I/O PINS WITH PULL-UP/DOWN CONTROL FUNCTION.
    THE INPUT SIGNALS TO GPIO PINS ARE OUTPUT TO INTC BLOCK, AND THEY BECOME ONE OF THE INTERRUPT GENERATION FACTORS.
  • INTC Interrupt Controller (INTC)
  • INTC block detects the state change of external input signals (GPIO 14 bits) and the internal interrupt signals, and then it generates interrupt signals.
  • 10bit ADC
  • 10bit ADC has 8-channel input ports with a multiplexer.
  • Battery Charger
  • There are two external power supply input pins; VCHG1 and VCH2.
  • When both VCHG1 and VCHG2 pins have a proper input of voltage range;
    the priority is given to VCHG1 pin input. Proper voltage range: 4.0V < VVCHG 1(VCHG2) < 6.3V
  • The efficient power supply to the system and battery is performed by the current limit protection and the charge current control.
  • Various timers for the charge control are integrated.
  • Chip temperature detection circuit is integrated, and it prevents the chip overheating due to the charge.
  • Thermistor temperature monitoring circuit is integrated, and it stops charging at the detection of error temperature while charging. Also, the temperature can be monitored by the integrated ADC.
  • LED connection pin is equipped; the external LED can be turned on.
  • Maximum allowable current from VBAT pin to VSYS pin: 1.6A.
  • VCHG1 and VCHG2 pin: 7V withstand (absolute maximum ratings)
  • Reset Control
  • The Reset Control circuit generates the RESETB signal by the 7 factors.
  • Real Time Clock
  • The time and calendar data are transferred to CPU through serial transfer.
  • Integrates the periodic interrupt circuit with alarm function
    (RTC interrupt request can be output to INTOUT pin through INTC block).
  • All the registers of integrated RTC have their own backup in BKBAT (REGRTC: always ON).
  • Package
  • CSP0606-120 (0.5mm pitch, PKG thickness = 1mm@MAX)
  • Process
  • CMOS 0.18μm
  • Portable Network Device

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Distributors

Ricoh semiconductor products are available at those dealers.

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