Skip to main content Skip to first level navigation

RICOH imagine. change.

RICOH ELECTRONIC DEVICES CO., LTD.

Skip to main content First level navigation Menu
Main content

R3151 Series
36V Input Voltage Detector with Detect and Release Delay Function or SENSE pin

Product Specifications

The R3151 Series are CMOS-based 36V input voltage detector ICs. Since the maximum input voltage of R3151 is 36V (absolute maximum rating: 50V) and R3151 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) R3151NxxxA/B: 1.4 V to 36.0 V (50.0 V)
R3151NxxxE/F: 3.6 V to 6.0 V (7.0 V)
Operating Temperature Range -40°C to 105°C
Supply Current R3151NxxxA/B: Typ. 3.8 µA
R3151NxxxE/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 105°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 105°C)
Detect Output Delay Time Accuracy -35% to 40% (-40°C to 105°C)
Release Output Delay Time Accuracy -35% to 40% (-40°C to 105°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 30% of the detector threshold.

APPLICATION INFORMATION

R3151NxxxA/B

R3151NxxxE/F

TIMING CHART

R3151NxxxA

R3151NxxxE

R3151NxxxB

R3151NxxxF

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

R3151 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.
R3151 Series offer products in Rank 3.

Rank 3: Automotive Accessories

  • Supervisory circuit for car accessories such as car audio equipment, car navigation system, and ETC system.

AEC-Q100 Grade 2 Compliant


PRODUCT LONGEVITY PROGRAM

R3151N 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

The R3151 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
R3151Nxxx#-TR-AE AutomotiveAutomotive AccessoriesAEC-Q100PLP SOT-23-6 3,000
  • xxx … Specify a combination of Set Detector Threshold (-VSET) and Set Release Voltage (+VSET) by using serial numbers starting from 001.
    -VSET can be designated between 5.0V and 10.0V in 0.1V steps.
    +VSET 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

DOCUMENT/CONTACT

Package*1 Reliability*2
SOT-23-6 R3151N (-AE)

*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.

Inquiry about products

Technical Support

Inquiries (SSL Form)

Inquiry about business

Purchase, Request for Samples and Documents

Distributors

Sample Online

Online Distributors