T63H0001A-CX

tm TE CH T63H0001A T63H0001A Features Low supply current Supply current Li-Ion Battery Protector TYP. 5.0uA Standby current (after detecting over-discharge) TYP. 0.3uA High withstand voltage High accuracy detector Threshold Variety of detector threshold Absolute maximum ratings Over-charge detector Over-discharge detector Over-charge detector threshold Over-discharge detector threshold Built in protection circuit Output delay of over charge Excess current trip/Short circuit protector Time delay at C3=0.01uF & VDD=4.3V 170Msnote1 20V(VDD-VM) +/- 25mV +/- 2.5% 4.0V to 4.4V 2.4V to 3.0V note1: The result was measured from T63H0001A-AX. Part Number Examples Over charge detection Part No. voltage T63H0001A-AX T63H0001A-BX T63H0001A-CX …*note1 4.25V 4.35V 4.30V …. voltage 4.05V 4.15V 4.10V …. 001A 001B 001C SOT-23-6 SOT-23-6 SOT-23-6 …. Over charge release marking Pack type note1: New model version and specific characteristics may be order by customer. General Description The T63H0001A series are protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) batteries by CMOS process. The T63H0001A series can detect over-charge/discharge of Li+ one-cell and excess load current, further include a short circuit protector for preventing large external short circuit current. Each of these ICs is composed of three voltage detectors, a reference unit, a hysteresis circuit, and a short circuit protector. When charging voltage crosses the detector threshold from a low value to a value higher than Vdet1, the output of Cout pin, the output of over-charge detector/VD1, switches to low level. … charger’s negative pin level. After detecting over-charge the VD1 can be reset and the output of Cout pin becomes “H” when the VDD voltage is coming down to a level lower than “Vdet1-Vhys1”, or when a charger is disconnected from the battery pack while the Publication Date: MAR. 2004 Revision:A TM Technology Inc. reserves the right P. 1 to change products or specifications without notice. tm TE CH T63H0001A and Dout level switches to “H” by detaching a battery pack from a load system. Further, short circuit protector makes Dout level to “L” immediately with external short circuit current and removing external short circuit leads Dout level to “H”. After detecting over-discharge, supply current will be kept extremely “L’ by halting some internal circuits operation. The output delay of over-charge detectors can be set by connecting external capacitors. Output type of Cout and Dout are CMOS. SOT-23-6 is available. VDD level is in between “Vdet1” and “Vdet1-Vhys1” in the T63H0001A version. The output of Dout pin, the output of over-discharge detector/VD2, switches to “Low” after internally fixed delay time passed, when discharging voltage crosses the detector threshold from a high value to a value lower than Vdet2. An excess load current can be sensed and cut off after internally fixed delay time passed through the built in excess current detector, VD3, with Dout being enabled to low level. Once after detecting excess current, the VD3 is released Block Diagram 5 VDD 2 Ct Level Shift VD1 Over-discharge & Excess current & Short circuit detector controller 1 Cout 4 Dout VD2 VD3 6 VM 3 VSS Pin Configurations TM Technology Inc. reserves the right to change products or specifications without notice. P. 2 Publication Date:MAR. 2004 Revision:A tm Pin No. 1 2 3 4 5 6 TE CH T63H0001A Pin description Symbol Cout Ct Vss Dout Vdd VM Pin description Output of over-charge detection, CMOS output Pin for external capacitor setting output delay of VD1 Ground Output of over-discharge detection, CMOS output Power supply Pin for charger negative input ABSOLUTE MAXIMUM RATINGS Vss=0V Symbol Vdd VM Vct Vcout Vdout Pd Topt Tstg Power Dissipation Operating Temperature Range Storage Temperature Range Output Voltage Supply Voltage Input Voltage Item Vdd-VM VM pin Ct pin Cout pin Dout pin Rating -0.3 to 20 Vdd-20 to Vss+0.3 Vss-0.3 to Vss+0.3 Vdd-20 to Vss+0.3 Vss-0.3 to Vss+0.3 150 -40 to +85 -55 to +125 Unit V V V V V mV ºC ºC Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits. TM Technology Inc. reserves the right to change products or specifications without notice. P. 3 Publication Date:MAR. 2004 Revision:A tm Symbol VDD1 Vdet1 TE CH T63H0001A Electrical Characteristic Item Operating input voltage Over-charge threshold voltage (Over charge detection voltage) Conditions Voltage defined as Vdd-VM -AX Detect rising edge of supply voltage -BX -CX -AX Over charge release Voch voltage -CX Vhys1 Tvdet1 Vdet2 Tvdet2 Vdet3 Tvdet3 Vshort Tshort Over-charge threshold hysteresis range Output delay time of over-charge Over-discharge threshold voltage Output delay time of over-discharge Excess current threshold voltage Output delay time of excess current Short detection voltage Output delay time of short current Vhys1=Vdet1-voch C3=0.01uF, Vdd=3.6V ! 4.3V 4.05 0.15 140 -BX 4.30 4.25 4.00 4.10 Min. 2.4 4.20 temp=25ºC Typ. Max. 18 4.25 4.35 4.30 4.05 4.15 4.10 0.20 170 2.50 10 0.12 13 4.30 4.40 4.35 4.10 4.20 4.15 0.25 210 2.563 13 0.14 17 Unit V V V V V V V V ms V ms V ms V us Kohm V V V V uA uA Detect falling edge of supply voltage 2.437 Vdd=3.6V ! 2.4V Detect rising edge of VM pin voltage Vdd=3V Vdd=3V 1 Vdd=3V VDD=3.0V, VM=1.0V Iol=50uA, Vdd=4.4V Ioh=-50uA, Vdd=3.9V Iol=50uA, Vdd=2.4V Ioh=-50uA, Vdd=3.9V Vdd=3.9V, VM=0V Vdd=2.0V 3.4 3.4 50 7 0.1 9 Vdd-1. Vdd-0. Vdd-0. 8 5 100 0.2 3.8 0.2 3.7 5.0 0.3 9.0 0.6 0.5 5 50 150 0.5 Rshort Reset resistor for excess current protection Vol1 Voh1 Vol2 Voh2 Idd Istandby Nch ON voltage of Cout Pch ON voltage of Cout Nch ON voltage of Dout Pch ON voltage of Dout Supply current Standby current Operation VD1/Over-Charge Detector The VD1 monitors VDD pin voltage. When the VDD voltage crosses over-charge detector threshold Vdet1 from a low value to a value higher than the Vdelt1, the VD1 can sense over-charging and an external charge control Nch-MOS-FET turns to “OFF” with Cout pin TM Technology Inc. reserves the right to change products or specifications without notice. being at “L”. An output delay time for over-charge detection can be set by an external capacitor C3 connecting the VSS pin and Ct pin. The external capacitor can make a delay time from a moment detecting over-charge to a time output a signal P. 4 Publication Date:MAR. 2004 Revision:A tm TE CH T63H0001A “OFF” of charge control Nch-MOS-FET. A level shifter incorporated in a buffer driver for the Cout pin makes the “L” of Cout pin to the VM pin voltage and the “H” of Cout pin is set to VDD voltage with CMOS buffer. the VDD level is within hysteresis width (Vdet1-Vhys1