RICOH R5460x Series Li-ion polymer 2Cell Protector Owner's Manual - User Guide

R5460x Series Li-ion/polymer 2Cell protector

The R5460x Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable two-cell Li-ion/Lithium polymer, further include a short circuit protection circuit for preventing large external short circuit current and the protection circuits against the excess discharge-current and excess charge current. Each of these ICs is composed of six voltage detectors, reference units, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit. In addition to SOT-23-6 package, DFN(PLP)1820-6 is also available.

FEATURES • Supply Voltage (VDD) ··································· 12V (Absolute Maximum Rating) • Excess Detector Threshold Range···· 0.05V to 0.20V (0.005V steps) • Charger Negative Input Voltage (V-) ·········· -30V (Absolute Maximum Rating) discharge-current Voltage Accuracy ·················· ±15m V • Operating Input Voltage Range (VDD) ············ 1.5V to 10.0V (VDET3) Output Delay Time (t VDET3)···· 12ms • Supply Current (IDD) ···································· Typ.4.0μA • Excess Detector Threshold ··············· -0.10V to -0.40V • Standby Current (Is) ···································· Max.0.1μA (C, F Version) charge-current Voltage Accuracy ·················· ±30m V or ±40m V

Max.2.0μA (A, D, E Version) (VDET4) Output Delay Time (t VDET4)···· 8ms

• Over-charge Detector Threshold Range ····· 4.1V to 4.5V (0.005V Steps) • Short Protection Detector Threshold (Vshort)···· Typ.1.0V

(VDET1) (A,C,E,F Version) Output Delay Time (tshort)······ Typ.300μs

3.5V to 4.0V (0.005V Steps) • 0V-battery charge············································· Available (D Version) • Packages ························································· DFN(PLP)1820-6,

Voltage Accuracy··············· ±25m V (25°C) SOT-23-6

±30m V (-5 to 55°C)

Output Delay Time (t VDET1)····· 1.0s

• Over-discharge Detector Threshold Range ····· 2.0 to 3.0V (0.1V Steps) (VDET2) Voltage Accuracy···················· ±2.5%

Output Delay Time (t VDET2)····· 128ms

BLOCK DIAGRAMS R5460x2xx AA/AD/AE/AF R5460x2xx AC

VDD VDD

DC Circuit DC Circuit

Oscillator Counter Oscillator Counter

VD1U Logic Level VD1U Logic Level

Circuit Shift Circuit Shift

VD2U Short VD2U Short

VC Delay VC Delay

Detector Detector

VD1L VD4 Logic VD1L VD4 Logic

Circuit Circuit

VD2L VD3 VD2L VD3

VSS DOUT COUT V- VSS DOUT COUT V-

SELECTION GUIDES Package Quantity per Reel Part No. DFN(PLP)1820-6 5,000 pcs R5460K2.xx.$.∗ -TR SOT-23-6 3,000 pcs R5460N2.xx.$.∗ -TR-FE .xx : Serial Number for the R5460x Series designing .∗ : Designation of protection type. input four threshold for over-charge, (.A.) Auto Release after Over-charge and Over-discharge. over-discharge, excess discharge-current and (.C.) Auto Release after Over-charge and with latch function after Over-discharge. excess charge-current detectors.

(.D.) Auto Release after Over-charge and Over-discharge. Over-charge Detector Threshold Range is from 3.5V to 4.0V.

.$.: Designation of Output delay option of excess (.E.) Auto Release after Over-charge and Over-discharge without Hysteresis Cancellation. charge-current, excess discharge-current and

(.F..) Auto Release after Over-charge and Over-discharge with Hysteresis.

short circuit.

PACKAGES

DFN(PLP)1820-6 SOT-23-6

Top View Bottom View

COUT 1 DOUT

V- 2 COUT DOUT 3 V- VSS 4 VC VDD 5 VDD 1 2 3 3 2 1 VC 6 VSS

∗) The tab is substrate level (VDD)

APPLICATIONS • Li-ion/Li polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack • High precision protectors for cell-phones and any other gadgets using on board Li-ion/Li polymer battery

Li-ion/polymer 2Cell protector