EC9526 E-CMOS | Alldatasheet
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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 Accuracy±20mV Accuracy±25mV （Topr=-5 to +60℃） ・ 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 ・ 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
One-cell Li-ion/Li-polymer battery protection IC EC9526 Pin Assignments Figure 1. Pin Assignment Diagram (DFN and SON Package)
Ordering Information
※ VVV：Please check the following table 1. Pin No. Symbol Function 1 DS Delay shorten terminal. 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- Input terminal connected to charger negative voltage. ( SSON-6J) ( SON-6C ) EC9526VVV XX X FS：SON-6C FX：SSON-6J
One-cell Li-ion/Li-polymer battery protection IC EC9526 PRODUCT LINEUP Product name Package 0V battery charge function Detection / Release voltage Detections delay time combination Product name Package battery charge function Detections delay time combination (Table 2) Product name Package 0V battery charge function Vdet1 Vrel1 Vdet2 Vrel2 Vdet3 Vdet4 Detections delay time combination
One-cell Li-ion/Li-polymer battery protection IC EC9526 (Table 1) ※ Detection delay time combination 1 2 3 4 5 6 7 8 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) Product name Package 0V battery charge function Detection / Release voltage Detections delay time combination ※ Product name Package battery charge function Detections delay time combination (Table 2) Vdet1 Vrel1 Vdet2 Vrel2 Vdet3 Vdet4
One-cell Li-ion/Li-polymer battery protection IC EC9526
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Topr=+25℃ Parameter Symbol Conditions Min. Typ. Max. unit INPUT/OUTPUT VOLTAGE Operating input voltage VDD1 VDD-VSS 1.5 - 5.5 V Maximum forbidden voltage for 0V charging※ Vst "Prohibition" function 0.6 0.9 1.2 V Minimum operating voltage for 0V charging※ Vst "Permission" function - - 1.2 V COUT pin Nch ON voltage Vol1 Iol=30uA, VDD=4.5V - 0.4 0.5 V COUT pin Pch ON voltage Voh1 Ioh=-30uA, 3.4 3.7 - V DOUT pin Nch ON voltage Vol2 Iol=30uA, VDD=2.0V - 0.2 0.5 V DOUT pin Pch ON voltage Voh2 Ioh=-30uA, 3.4 3.7 - V CURRENT CONSUMPTION Current consumption Idd VDD=3.9V, V-=0V - 3.0 5.5 uA Current consumption at stand-by Is - - 0.1 uA DETECTION/RELEASE VOLTAGE Overcharge detection voltage Vdet1 Ta=+25℃ Typ-0.020 Vdet1 Typ+0.020 V Overcharge detection voltage Vdet1 Ta=-5～+60℃ Typ-0.025 Vdet1 Typ+0.025 V Overcharge release voltage※2 Vrel1 Vdet1≠Vrel1 Typ-0.030 Vrel1 Typ+0.030 V Overdischarge detection voltage Vdet2 Typ-0.035 Vdet2 Typ+0.035 V Overdischarge release voltage※3 Vrel2 Vdet2≠Vrel2 Typ-0.10 Vrel2 Typ+0.100 V Discharging overcurrent detection voltage Vdet3 Typ-0.010 Vdet3 Typ+0.010 V Charging overcurrent detection voltage Vdet4 Typ-0.020 Vdet4 Typ+0.020 V Short detection voltage Vshort 0.4 0.5 0.6 V DETECTION DELAY TIME Overcharge detection delay time tVdet1 Typ*0.8 tVdet1 Typ*1.2 s Overdischarge detection delay time tVdet2 Typ*0.8 tVdet2 Typ*1.2 ms Discharging overcurrent detection delay time tVdet3 Typ*0.8 tVdet3 Typ*1.2 ms Charging overcurrent detection delay time tVdet4 Typ*0.8 tVdet4 Typ*1.2 ms Short detection delay time tshort Typ*0.8 tshort Typ*1.2 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).
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.
One-cell Li-ion/Li-polymer battery protection IC EC9526