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R8315 Series
36V Input Voltage Detector with Detect and Release Delay Function or SENSE pin

Product Specifications

The R8315 Series are CMOS-based 36V input voltage detector ICs. Since the maximum input voltage of R8315 is 36V (absolute maximum rating: 50V) and R8315 has high voltage accuracy and low supply current, it is suitable for car battery voltage supervisor.

There are two versions: A/B versions provide VDD pin detection and E/F versions provide SENSE pin detection. Detector threshold and Release voltage can be specified separately. Both the detector threshold accuracy and the release voltage accuracy are ±1.5%.
The detect output delay time and the release output delay time (Power-on Reset Time) can be set by a pin. The output types are Nch open drain "L" output and Nch open drain "H" output. SOT-23-6 package is available.

FEATURES

Operating Voltage Range (Maximum Rating) R8315NxxxA/B: 1.4 V to 36.0 V (50.0 V)
R8315NxxxE/F: 3.6 V to 6.0 V (7.0 V)
Operating Temperature Range -40°C to 125°C
Supply Current R8315NxxxA/B: Typ. 3.8 µA
R8315NxxxE/F: Typ. 3.5 µA
Detector Threshold Range 5.0 V to 10.0 V (0.1V steps)
Detector Threshold Accuracy ±1.5% (25°C)
±2.0% (-40°C to 110°C)
Release Voltage Range*1 5.3 V to 11.0 V (0.1V steps)
Release Voltage Accuracy ±1.5% (25°C)
±2.0% (-40°C to 110°C)
Output Delay Time Accuracy -35% to 40% (-40°C to 110°C)
Output Reset Time Accuracy -35% to 40% (-40°C to 110°C)
Output Type Nch Open Drain
Package SOT-23-6

Detect Output Delay Time and Release Output Delay Time are adjustable by external capacitor.

*1 The release voltage can be adjusted by having the hysteresis set to 5% to 20% of the detector threshold.

APPLICATION INFORMATION

R8315xxxxA/B

R8315xxxxE/F

PIN DESCRIPTION

SOT-23-62.9 mm × 2.8 mm

SOT-23-6

1 CD
2 CR
3 NC (A/B), SENSE (E/F)
4 VDD
5 GND
6 DOUT

R8315 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.
R8315 Series offer products in Rank 1.

Rank 1: Safety-Critical Automotive Parts (Operation Control System)

  • Supervisory circuit for operation control equipments such as power steering, shift by wire, and TPMS

AEC-Q100 Grade 1 Compliant


PRODUCT LONGEVITY PROGRAM

R8315N operate PRODUCT LONGEVITY PROGRAM (ten-year supply is maintained as of January, 2016).
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 125°C


Tjmax 150°C

The R8315 series are rated at high temperature of Tjmax = 150°C. The power dissipation is also rated at high temperature.


SELECTION GUIDE

VD Detector Threshold and Release Voltage for the ICs are user-selectable options.

Product Name   Package Quantity per Reel
R8315Nxxx#-TR-FE AutomotiveSafety-Critical Automotive PartsAEC-Q100PLP SOT-23-6 3,000
  • xxx … Specify a combination of Detector Threshold (-VDET) and Release Voltage (+VDET) by using serial numbers starting from 001.
    -VDET can be designated between 5.0V and 10.0V in 0.1V steps.
    +VDET can be designated between 5.3V and 11.0V in 0.1V steps.
  • # … Select an output type from below.
    A: VDD Voltage Detection Type "L" Output
    B: VDD Voltage Detection Type "H" Output
    E: SENSE Voltage Detection Type "L" Output
    F: SENSE Voltage Detection Type "H" Output

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