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

R5464 Series
High Accuracy 2-Cell Li-ion Battery Protection IC with Alarm Function

Product Specifications

The R5464 is a CMOS-based over-charge/ over-discharge protector for 2-cell Li-Ion batteries that can produce a high-accuracy alarm-signal. The R5464 has an alarm signal output, a temperature detection, an over-charge voltage detection, an over-discharge voltage/ discharge overcurrent detection and a charge overcurrent detection. The R5464 is composed of eight voltage detectors, a temperature detector, a reference unit, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit. When the over-charge voltage or over-charge current is detected, the battery voltage crosses the each detector threshold, the output of COUT pin switches to “L” level after internal fixed delay time. The output of DOUT pin, the output of the over-discharge detector and the discharge overcurrent detector, switches to “L” level after internally fixed delay time, when discharged voltage crosses the detector threshold. The output type of COUT and DOUT is CMOS. The output type of AOUT is Pch open drain.

FEATURES

Supply Voltage 1.5 V to 10.0 V (Absolute Maximum Rating: 30 V)
Charger Negative Input Voltage -30 V (Absolute Maximum Rating)
Supply Current Typ. 6.0 µA (AD,DD Version), Typ. 5.0 µA (CG Version),
Standby Current Max. 0.1 µA
Over-charge Detector Threshold Range 3.6 V to 4.3 V (0.005 V Steps)
Voltage Accuracy +10 mV/ −15 mV
Output Delay Time 1.0 s
Restoration Voltage −0 V to −0.25 V (0.01 V Steps)
Over-discharge Detector Threshold Range 2.0 V to 3.0 V (0.005 V Steps)
Voltage Accuracy ±2.5%
Output Delay Time 128 ms
Restoration Voltage +0 V to +0.8 V (0.01 V Steps)
Excess
discharge-current
Detector Threshold Range 0.05 V to 0.24 V (0.005 V steps)
Voltage Accuracy ±15 mV
Output Delay Time 12 ms (AD,DD Version), 16 ms (CG Version)
Excess
charge-current
Detector Threshold −0.22 V to −0.1 V (0.005 V steps)
Voltage Accuracy ±20 mV
Output Delay Time 8 ms
Short Protection Detector Threshold 1.0 V
Voltage Accuracy ±0.4 V
Output Delay Time Typ. 300 µs
Alarm Detector Threshold (Normal Temp.) 3.2 V to 4.3 V (0.005 V Steps)
Detector Threshold (High Temp.) −0 V to −0.15 V (0.005 V Steps)
Voltage Accuracy +10 mV/ −15 mV
Output Delay Time 6 ms (AD,CG Version), 36 ms (DD Version)
Restoration Voltage*1 −0 V to −0.25 V (0.01 V Steps)
Detection Temperature (High) 45°C
Selectable Hysteresis (5°C)
Functions Delay Time Shortening
0-V Battery Charge Option
Overdischarge Release Voltage Condition Latch type / Voltage release type
Packages DFN(PLP)2527-10

*1 The difference between the alarm detection voltage and the alarm restoration voltage is hysteresis. The hysteresis in normal temperature is set to the same value as the hysteresis in high temperature.

Tap to see the table

APPLICATION INFORMATION

PIN DESCRIPTION

DFN(PLP)2527-10

DFN(PLP)2527-102.7 mm × 2.5 mm
1 VDD
2 VSS
3 RTIN
4 TIN
5 VC
6 COUT
7 V−
8 PS
9 AOUT
10 DOUT

*) The tab is substrate level (VDD).


R5464 Series for Consumer

APPLICATIONS

  • Over-charge/ Over-discharge/ Overcurrent Protector for 2-Cell Li-Ion/ Li-Polymer Battery Pack
  • Over-charge/ Over-discharge/ Overcurrent Protector for Single Lens Reflex Camera

SELECTION GUIDE

The over-charge, over-discharge, discharge overcurrent, charge overcurrent, 0-V battery charge option and their detection delay times are user-selectable options.

Product Name   Package Quantity per Reel
R5464Kxxx$#-TR Consumter DFN(PLP)2527-10 5,000
  • xx … Specify the over-charge alarm detection voltage, overcharge detection voltage, over-discharge detection voltage, discharge current and charge overcurrent.
  • $ … Specify the delay times of over-charge alarm detection voltage (tVALM) and discharge overcurrent (tVDET3).
    A: tVALM = 6 ms, tVDET3= 12 ms
    C: tVALM = 6 ms, tVDET3 = 16 ms
    D: tVALM = 36 ms, tVDET3 = 12 ms
  • # … Specify the 0-V battery charge, the normal state of AOUT and the alarm output type.
  0-V Battery Charge Normal State of AOUT Alarm Output Type
D No Open High/ Open
G Yes High High/ Open/ Middle

DOCUMENT/CONTACT

Purchase

Technical Support

Package*1 Reliability*2
DFN(PLP)2527-10 R5464K

*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