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1、 R5402N101KD - 1/11 - PRODUCT SPECIFICATIONS R5402N101KD-TR-F contents 1 Outline 2 Block Diagram 3 Pin Descriptions 4 Absolute Maximum Ratings 5 Electrical Characteristics 6 Test Circuits 7 Operation 8 Technical Notes 9 Timing Diagrams 10 Package Dimensions 11 Mark Specification R5402N101KD - 2/11 -
2、 1 Outline The R5402N101KD is high voltage tolerance CMOS-based protection IC for over-charge/discharge and over-current of rechargeable one-cell Lithium-ion (Li+)/Lithium polymer battery. The R5402N101KD can detect over-charge/discharge of Li+ one-cell and excess load current, further include a sho
3、rt circuit protector for preventing large external short circuit current and the excess charge-current. The R5402N101KD consists of four voltage detectors, a reference unit, a delay circuit, a short circuit detector, an oscillator, a counter, and a logic circuit. When the R5402N101KD detects over-ch
4、arge or over-charge current, the output of COUT pin switches to “L” level, that is, the chargers negative pin level after the internal fixed delay time. When the R5402N101KD detects over-discharge or excess discharge current, the output of DOUT pin switches to “L” level after the internal fixed dela
5、y time. After detecting over-charge voltage or over-charge current, if the battery voltage is lower than over-charge detector threshold voltage, the R5402N101KD can be reset and the output of COUT becomes “H” when a kind of load is connected to VDD after a charger is disconnected from the battery pa
6、ck. If a charger is continuously connected to the battery pack, when the cell voltage becomes equal or lower than the release voltage from over-charge, over-charge will be released and COUT becomes “H”. After detecting over-discharge voltage, connect a charger to the battery pack, and when the batte
7、ry supply voltage becomes higher than over-discharge detector threshold, or the battery voltage becomes equal or more than the released voltage from over-discharge, the R5402N101KD is released and the voltage of DOUT pin becomes “H”. If the battery discharges into 0V level, recharge current is accep
8、ted. Once after detecting excess discharge-current or short circuit, the R5402N101KD is released and DOUT level becomes “H” with detaching a battery pack from a load system. After detecting over-discharge, supply current is kept extremely low by halting internal circuits operation. When the output o
9、f COUT is “H“, by setting the V- pin at equal or lower than the delay time shortening voltage (Typ. -2.0V), the output delay can be shortened. Especially, the delay time of over charge detector can be reduced into approximately 1/60. Thus, testing time of protector circuit board can be reduced. Outp
10、ut type of COUT and DOUT is CMOS. 2 Block Diagram Short Detector DOUT COUT V- scillator VD1 VD2 Level Shift VD3 Counter Logic Circuit Delay Logic Circuit VDD VSS DS Circuit VD4 R5402N101KD - 3/11 - 3 Pin Description Pin No. Symbol Pin description 1 DOUT Output of Over-discharge detection, CMOS outpu
11、t 2 V- Charger negative Input 3 COUT Output of Over-charge detection, CMOS output 4 NC No Connection 5 VDD Power Supply Pin. Substrate level of the IC. 6 Vss Ground Pin. (Ground level of the IC) 4 Absolute Maximum Rating Topt=25C, Vss=0V Item Symbol Ratings Unit Supply Voltage VDD -0.3 to 12 V Input
12、 Voltage V- pin Voltage V- VDD-35 to VDD+0.3 V Output Voltage COUT pin Voltage DOUT pin Voltage VCOUT VDOUT VDD-35 to VDD+0.3 Vss-0.3 to VDD+0.3 V V Power Dissipation PD 150 mW Operating Temperature Topr -40 to 85 C Storage Temperature Tstg -55 to 125 C R5402N101KD - 4/11 - 5 Electrical Characterist
13、ics R5402N101KD Unless otherwise provided, Topt=25C Item Symbol Conditions Min.Typ. Max. UnitNote1 Operating Input Voltage VDD1 VDD - Vss 1.5 5.0 V A Minimum Operating Voltage for 0V Charging Vst Voltage Defined as VDD-V-, VDD-Vss=0V 1.8 V A Over-charge Threshold Voltage VDET1 R1=330 R1=330, Topt=-5
14、C to 55C*Note2 4.225 4.220 4.250 4.250 4.275 4.280 V V B B Released voltage from Over-charge VREL1 R1=330 4.0004.050 4.100V B Output Delay of Over-charge tVDET1 VDD=3.6V4.4V 0.7 1.0 1.3 s B Release Delay for VD1 tVREL1 VDD=4.5V3.6V 11 16 21 msB Over-discharge Threshold VDET2 Detect falling edge of s
15、upply voltage 2.4382.500 2.562V B Released Voltage from Over-discharge VREL2 Detect rising edge of supply voltage 2.9253.000 3.075V C Output Delay of Over-discharge tVDET2 VDD=3.6V2.2V 14 20 26 msD Release Delay for VD2 tVREL2 VDD=3V, V-=3V0V 0.7 1.2 1.7 msD Excess discharge-current threshold VDET3
16、Detect rising edge of V- pin voltage 0.1850.200 0.215V E Output delay of excess discharge-current tVDET3 VDD=3.0V, V-=0V to 0.5V 8 12 16 ms F Output delay of release from excess discharge-current tVREL3 VDD=3.0V, V-=3V to 0V 0.7 1.2 1.7 ms F Short Protection Voltage Vshort VDD=3.0V 0.550.80 1.00 V F Delay Time for Short Protection tshort VDD=3.0V, V-=0V to 3V 230 300 500 s F Reset Resistance for Excess
