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R5107 Series
Watchdog Timer Equipped with Manual Reset with VD

Product Specifications

The R5107 Series are CMOS-based system power ICs with a voltage detector (VD) and watchdog timer (WDT) integrated in a single chip.
R5107 monitors the power system of devices equipped with microprocessors and prevents system runaway with a reset signal when a malfunction occurs. The output delay time of the VD and watchdog timeout period/reset time can be adjusted by an external capacitor with a high degree of accuracy. The R5107 is equipped with the function that inhibits clock monitoring of the WDT (INH) and manual reset (MR) that also stops the VD.

FEATURES

  Consumer Automotive
Operating Voltage Range (Maximum Rating) 0.9 V to 6.0 V (7.0 V)
Operating Temperature Range −40°C to 105°C
Supply Current Typ. 11 µA
< Voltage Detector Part >
Detector Threshold Range 1.5 V to 5.5 V (0.1V steps)
Detector Threshold Accuracy ±1.0%
Detector Threshold Temperature Coefficient Typ. ±100 ppm/°C (−40°C≤Ta≤105°C)
Power-on Reset Delay Time accuracy ±16%* (−40°C≤Ta≤105°C)
Power-on reset delay time of the voltage detector Typ. 370 ms with an external capacitor : 0.1 µF
With Manual Reset pin (MR) Able to reset voltage detector and watchdog timer
< Watchdog Timer Part >
Built-in a watchdog timer's time out period accuracy ±33%* (−40°C≤Ta≤105°C)
Timeout period for watchdog timer Typ. 310 ms with an external capacitor : 0.1 µF
Reset timer for watchdog timer Typ. 34 ms with an external capacitor : 0.1 µF
With Inhibit pin (INH) Able to stop watchdog timer
Package SSOP-8G

* Accuracy to center value of (Min.+Max.)/2

APPLICATION INFORMATION

TIMING CHART

* VTCD : Threshold voltage of CD pin when a power-on reset pulse inverting.
* Vref2H : CTW pin voltage at the end of WDT timeout period.
* Vref2L : CTW pin voltage at the begin of WDT timeout period.
* tPHL : Output delay time
* tWDI : tWD/10 (SCK pulses input during this period are ignored.)

PIN DESCRIPTION

SSOP-8G2.9 mm × 4.0 mm

SSOP-8G

1 RESETB
2 MR
3 CD
4 GND
5 SCK
6 INH
7 CTW
8 VDD

R5107 Series for Consumer

APPLICATIONS

  • Supervisory circuit for equipment with using microprocessors

PRODUCT LONGEVITY PROGRAM

R5107 series for consumer operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


Operating Temperature Range : -40°C to 105°C


SELECTION GUIDE

The detector threshold, the output type and the taping type for the ICs can be selected at the users’ request.

Product Name   Package Quantity per Reel
R5107Gxx1#-TR-FE ConsumterPLP SSOP-8G 3,000
  • xx … The detector threshold (-VDET) can be designated in the range from 1.5V(15) to 5.5V(55) in 0.1V steps.
  • # … Designation of Output Type
    A: Nch Open Drain
    C: CMOS

DOCUMENT/CONTACT

Purchase

Technical Support

Package *1 Marking Reliability *2
SSOP-8G (0.65mm pitch) R5107G R5107G (-FE)

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.


R5107 Series for Automotive

Ricoh is committed to providing a semiconductor device with the highest level of quality and reliability by restricting the device manufacturing only within Ricoh and the cooperative companies successfully passed our stringent inspections for automotive products. Ricoh established a traceability system and manages manufacturing information and logistics information from the warehouse.


Quality Ranks for Applications

Ricoh offers three different quality ranks for automotive products according to their application purposes.
R5107 Series offer products in Rank 2.

Rank 2: Automotive General Equipments (Body System)

  • Supervisory circuit for automotive general equipments such as electric window, side mirror, and around view camera

AEC-Q100 Grade 2 Compliant


PRODUCT LONGEVITY PROGRAM

R5107 series for automotive operate PRODUCT LONGEVITY PROGRAM.
This program has been introduced to help customers select the most appropriate part for applications that require long life cycles.


Operating Temperature Range : -40°C to 105°C


Tjmax 150°C

Unlike the rating of the products for consumer applications at Tjmax = 125°C, the products for automotive applications are rated at high temperature of Tjmax = 150°C. The power dissipation is also rated at high temperature.


SELECTION GUIDE

The detector threshold, the output type and the taping type for the ICs can be selected at the users’ request.

Product Name   Package Quantity per Reel
R5107Gxx1#-TR-JE AutomotiveAutomotive General EquipmentsAEC-Q100PLP SSOP-8G 3,000
  • xx … The detector threshold (-VDET) can be designated in the range from 1.5V(15) to 5.5V(55) in 0.1V steps.
  • # … Designation of Output Type
    A: Nch Open Drain
    C: CMOS

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
SSOP-8G (0.65mm pitch) R5107G (-JE) *3

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.
*3: The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.

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