One-cell Li-ion/Li-polymer battery protection IC EC9526 General Description The EC9526 series are protection IC using high voltage CMOS process for overcharge, overdischarge and overcurrent protection of the rechargeable Lithium-ion or Lithium-polymer battery. The overcharge, overdischarge , discharging overcurrent , charging overcurrent , and short protection of the rechargeable one-cell Lithium-ion or Lithium-polymer battery can be detected. Each of these IC composed of four voltage detectors, short detection circuit, reference voltage sources, oscillator, counter circuit and logical circuits. Features （Unless otherwise specified, Topr=+25℃） 1) Range and accuracy of detection/release voltage ・ Overcharge detection voltage 4.0V to 4.5V, 5mV steps ・ Overcharge release voltage 3.9V to 4.5V, 50mV steps Accuracy±30mV ・ Overdischarge detection voltage 2.0V to 3.0V, 50mV steps Accuracy±35mV ・ Overdischarge release voltage 2.0V to 3.5V, 50mV steps Accuracy±100mV Accuracy±20mV Accuracy±25mV （Topr=-5 to +60℃） ・ Discharging overcurrent detection voltage +50mV to +300mV, 5mV steps Accuracy±10mV ・ Charging overcurrent detection voltage -50mV to -300mV, 5mV steps Accuracy±20mV ・ Short detection voltage 0.5V fixed Accuracy±100mV 2) Range of detection delay time ・ Overcharge detection delay time Selection from 143ms, 573ms, 1.2s ・ Overdischarge detection delay time Selection from 38ms, 150ms, 300ms ・ Discharging overcurrent detection delay time Selection from 4.5ms, 9ms, 18ms ・ Charging overcurrent detection delay time Selection from 4.5ms, 9ms, 18ms ・ Short detection delay time Selection from 300us, 400us 3) 0V battery charge function Selection from "Prohibition" or "Permission" 4) Low current consumption ・ Normal mode Typ. 3.0uA, Max. 5.5uA ・ Stand-by mode Max. 0.1uA 5) Absolute maximum ratings ・ VDD pin VSS-0.3V to 12V ・ COUT pin and V- pin VDD-28V to VDD+0.3V ・ DOUT pin VSS-0.3V to VDD+0.3V ・ Storage temperature -55 to +125℃ ・ Operation temperature -40 to +85℃ 6) Package type ・ SSON-6J 1.40 × 1.40 × 0.55（mm） ・ SON-6C 1.60 × 2.00 × 0.60（mm） E-CMOS Corp. (www.ecmos.com.tw) Page 1 of 7 4C12N-Rev.P001 One-cell Li-ion/Li-polymer battery protection IC EC9526 Pin Assignments ( SSON-6J) ( SON-6C ) Figure 1. Pin Assignment Diagram (DFN and SON Package) Pin No. Symbol Function 1 DS 2 COUT Output of overcharge detection. 3 DOUT Output of overdischarge detection. 4 VSS VSS terminal. Connected to ground. 5 VDD VDD terminal. Connected to IC substrate. 6 V- Delay shorten terminal. Input terminal connected to charger negative voltage. Ordering Information EC9526VVV XX X FS：SON-6C FX：SSON-6J ※ VVV：Please check the following table 1. E-CMOS Corp. (www.ecmos.com.tw) Page 2 of 7 4C12N-Rev.P001 One-cell Li-ion/Li-polymer battery protection IC EC9526 PRODUCT LINEUP Detection / Release voltage Product name Product name Package Package Detections Detections delay time delay time combination combination ※※ 0V 0V battery battery charge charge function function EC9526A16FSR EC9526A26FSR EC9526A36FSR Product name EC9526A46FSR EC9526A56FSR EC9526A66FSR EC9526A76FSR EC9526A86FSR EC9526B16FSR EC9526B26FSR EC9526B36FSR EC9526B46FSR EC9526B56FSR EC9526C16FSR EC9526C26FSR EC9526C36FSR EC9526C46FSR EC9526C56FSR EC9526C66FSR EC9526C76FSR EC9526E16FSR EC9526F16FSR EC9526G16FSR EC9526H16FSR EC9526H26FSR EC9526H36FSR EC9526H46FSR EC9526J16FSR EC9526K16FSR EC9526K26FXR EC9526K26FSR EC9526K36FXR EC9526K36FSR EC9526K46FXR EC9526K46FSR EC9526K56FSR EC9526K66FXR EC9526K66FSR EC9526K76FSR EC9526K86FXR EC9526K86FSR EC9526K96FSR EC9526L16FXR EC9526L16FSR EC9526L26FSR EC9526L36FXR EC9526L36FSR EC9526L56FSR SON6C SON6C SON6C Package SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SON6C SSON6J SON6C SSON6J SON6C SSON6J SON6C SON6C SSON6J SON6C SON6C SSON6J SON6C SON6C SSON6J SON6C SON6C SSON6J SON6C SON6C E-CMOS Corp. (www.ecmos.com.tw) Permission Permission 0V battery Permission Permission charge Permission function Permission Permission Permission Permission Permission Permission Permission Permission Prohibition Prohibition Prohibition Prohibition Prohibition Prohibition Prohibition Permission Prohibition Permission Permission Permission Permission Permission Prohibition Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission Permission (Table 2) Vdet1 4.275 4.280 4.280 4.275 4.280 4.280 4.275 4.300 3.900 3.950 4.000 4.050 4.100 4.280 4.280 4.280 4.280 4.200 4.280 4.280 4.325 4.325 4.350 4.280 4.275 4.275 4.275 4.280 4.275 4.275 4.275 4.275 4.275 4.275 4.275 4.275 4.270 4.270 4.275 4.275 4.275 4.275 4.275 4.275 4.275 4.275 4.275 4.350 Page 3 of 7 Vrel1 4.175 4.080 4.080 4.075 4.280 4.280 4.175 4.100 3.800 3.850 3.900 3.950 4.000 4.080 4.080 4.130 4.130 4.100 4.130 4.130 4.075 4.075 4.150 4.180 4.075 4.175 4.175 4.180 4.275 4.075 4.075 4.075 4.075 4.075 4.075 4.275 4.070 4.270 4.075 4.075 4.075 4.075 4.075 4.075 4.075 4.075 4.075 4.150 Vdet2 2.300 2.300 2.300 2.300 2.800 3.000 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.600 2.800 2.800 2.800 2.800 2.500 2.500 2.300 2.300 2.800 2.300 2.400 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.600 2.600 2.600 2.600 2.600 3.400 2.600 2.600 2.300 Vrel2 2.400 2.300 2.300 2.300 2.800 3.000 2.400 2.300 2.400 2.400 2.400 2.400 2.400 2.300 2.300 3.100 3.100 2.900 3.100 3.100 2.900 2.900 3.000 2.300 3.100 2.300 2.400 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.300 2.600 2.600 2.600 2.600 2.600 3.400 2.600 2.600 2.300 Vdet3 0.100 0.080 0.100 0.150 0.050 0.075 0.050 0.130 0.100 0.100 0.100 0.100 0.100 0.100 0.130 0.150 0.150 0.150 0.100 0.050 0.150 0.150 0.200 0.120 0.100 0.120 0.100 0.120 0.100 0.120 0.120 0.130 0.130 0.150 0.150 0.050 0.100 0.100 0.130 0.110 0.110 0.190 0.100 0.100 0.100 0.180 0.180 0.130 Vdet4 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.100 -0.130 -0.085 -0.085 -0.085 -0.085 -0.085 -0.085 -0.120 -0.120 -0.100 1 1 Detections 1 1 delay time 1 combination ※ 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 3 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 4C12N-Rev.P001 One-cell Li-ion/Li-polymer battery protection IC EC9526 Detection / Release voltage Product name Product name Detections Detections 0V battery 0V charge battery function charge Package Package delay delaytime time combination combination ※ ※ function EC9526N16FSR EC9526P16FSR EC9526T16FSR EC9526W16FSR EC9526W26FSR SON6C SON6C SON6C SON6C SON6C Prohibition Prohibition Permission Permission Permission (Table 2) Vdet1 4.280 4.225 4.225 4.225 4.375 Vrel1 4.080 4.125 4.225 4.025 4.175 Vdet2 2.400 2.000 2.500 2.500 2.400 Vrel2 2.400 2.000 2.900 2.900 2.800 Vdet3 0.050 0.200 0.150 0.150 0.145 Vdet4 -0.100 -0.100 -0.150 -0.150 -0.145 6 7 8 8 8 (Table 1) ※ Detection delay time combination 1 2 3 4 5 6 7 8 Overcharge detection delay time tVdet1 1.2s 1.2s 143ms 1.2s 1.2s 1.2s 573ms 1.0s Overdischarge detection delay time tVdet2 150ms 150ms 38ms 150ms 38ms 150ms 150ms 96ms Discharging overcurrent detection delay time tVdet3 9ms 9ms 18ms 18ms 9ms 4.5ms 4.5ms 12ms Charging overcurrent detection delay time tVdet4 9ms 9ms 9ms 9ms 9ms 9ms 4.5ms 6ms Short detection delay time tshort 300us 400us 300us 300us 300us 300us 300us 400us (Table 2) E-CMOS Corp. (www.ecmos.com.tw) Page 4 of 7 4C12N-Rev.P001 One-cell Li-ion/Li-polymer battery protection IC EC9526 ELECTRICAL CHARACTERISTICS Unless otherwise specified, Topr=+25℃ Parameter Operating input voltage Maximum forbidden voltage for 0V charging※ Minimum operating voltage for 0V charging※ COUT pin Nch ON voltage COUT pin Pch ON voltage DOUT pin Nch ON voltage DOUT pin Pch ON voltage Current consumption Current consumption at stand-by Overcharge detection voltage Overcharge detection voltage Overcharge release voltage※2 Overdischarge detection voltage Overdischarge release voltage※3 Discharging overcurrent detection voltage Charging overcurrent detection voltage Short detection voltage Overcharge detection delay time Overdischarge detection delay time Discharging overcurrent detection delay time Charging overcurrent detection delay time Short detection delay time Symbol Conditions INPUT/OUTPUT VOLTAGE VDD1 VDD-VSS Vst "Prohibition" function Vst "Permission" function Vol1 Iol=30uA, VDD=4.5V Voh1 Ioh=-30uA, Vol2 Iol=30uA, VDD=2.0V Voh2 Ioh=-30uA, CURRENT CONSUMPTION Idd VDD=3.9V, V-=0V Is DETECTION/RELEASE VOLTAGE Vdet1 Ta=+25℃ Vdet1 Ta=-5～+60℃ Vrel1 Vdet1≠Vrel1 Vdet2 Vrel2 Vdet2≠Vrel2 Vdet3 Vdet4 Vshort DETECTION DELAY TIME tVdet1 tVdet2 tVdet3 tVdet4 tshort Min. Typ. Max. unit 1.5 0.6 3.4 3.4 0.9 0.4 3.7 0.2 3.7 5.5 1.2 1.2 0.5 0.5 - V V V V V V V - 3.0 - 5.5 0.1 uA uA Typ-0.020 Typ-0.025 Typ-0.030 Typ-0.035 Typ-0.10 Typ-0.010 Typ-0.020 0.4 Vdet1 Vdet1 Vrel1 Vdet2 Vrel2 Vdet3 Vdet4 0.5 Typ+0.020 Typ+0.025 Typ+0.030 Typ+0.035 Typ+0.100 Typ+0.010 Typ+0.020 0.6 V V V V V V V V Typ*0.8 Typ*0.8 Typ*0.8 Typ*0.8 Typ*0.8 tVdet1 tVdet2 tVdet3 tVdet4 tshort Typ*1.2 Typ*1.2 Typ*1.2 Typ*1.2 Typ*1.2 s ms ms ms us ※1 0V battery charge function is selected from "Prohibition" or "Permission". ※2 There is occasion as follows of two kinds of release condition from the overcharge status. a) In the case that the V- pin voltage is lower than the discharging overcurrent detection voltage (Vdet4), EC9526 releases the overcharge status when the battery voltage falls below the overcharge release voltage(Vrel1). b) In the case that the V- pin voltage is higher than or equal to the discharging overcurrent detection voltage (Vdet4), EC9526 releases the overcharge status when the battery voltage falls below the overcharge detection voltage (Vdet1).This is a hysteresis cancellation function. ※3 The release condition from the overdischarge status is that the charger is connected and the V- pin voltage is lower than the discharging overcurrent detection voltage (Vdet3), and the battery voltage rise more then the overdischarge release voltage(Vrel2). E-CMOS Corp. (www.ecmos.com.tw) Page 5 of 7 4C12N-Rev.P001 One-cell Li-ion/Li-polymer battery protection IC EC9526 BLOCK DIAGRAM / TYPICAL APPLICATION CIRCUIT R1 and C1 stabilize a supply voltage ripple. However, the detection voltage rises by the current of penetration in IC of the voltage detection when R1 is enlarged, and the value of R1 is adjusted to 1kohm or less. Moreover, adjust the value of C1 to 0.01uF or more to do the stability operation, please. R1 and R2 resistors are current limit resistance if a charger is connected reversibly or a high-voltage charger that exceeds the absolute maximum rating is connected. R1 and R2 may cause a power consumption will be over rating of power dissipation, therefore the `R1+R2` should be more than 1kohm. Moreover, if R2 is too enlarged, the charger connection release cannot be occasionally done after the overdischarge is detected, so adjust the value of R2 to 10kohm or less, please. C2 and C3 capacitors have effect that the system stability about voltage ripple or extraneous noise. After check characteristics, decide that these capacitors should be inserted or not, where should be inserted, and capacitance value, please. E-CMOS Corp. (www.ecmos.com.tw) Page 6 of 7 4C12N-Rev.P001 One-cell Li-ion/Li-polymer battery protection IC EC9526 Package Information E-CMOS Corp. (www.ecmos.com.tw) Page 7 of 7 4C12N-Rev.P001