R5475N

R5475N NISSHINBO | Alldatasheet

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Technical content

Li-ION/POLYMER 1CELL PROTECTOR R5475N/R5478N SERIES - 1 - OUTLINE The R5475N/R5478Nxxxxx Series are high voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) / Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit current and Excess discharge-current. Each of these ICs is composed of three voltage detectors, a reference unit, a delay circuit, a short circuit protector, an oscillator, a counter, and a logic circuit. When the over -charge voltage crosses the detector threshold from a low value to a high value, the output of COUT pin switches to low level after internal fixed delay time. The conditions to release over-charge detector are different by mask options. In terms of so called “Latch function” version, after detecting over-charge, the detector can be reset and the output of C OUT becomes "H" when a kind of load is connected to V DD after a charger is disconnected from the battery pack, and the cell voltage becomes lower than over -charge detector threshold. If a charger is continue to be connected to the battery pack, even the cell voltage becomes lower than over-charge detector threshold, over-charge state is not released. On the other hand, in terms of so called, “ Released by voltage level ” v ersion, after detecting over-charge, when the cell voltage reaches the released voltage from over-charge, the output of COUT becomes “H” The output of D OUT pin, the output of Over- discharge detector and Excess discharge -current detector, switches to “L” level after internally fixed delay time, when discharged voltage crosses the detector threshold from a high value to a value lower than VDET2. The conditions to release over-discharge detector are also different by mask options. In terms of so called “Latch function” version, after detecting over- discharge voltage, connect a charger to the battery pack, and when the battery supply voltage becomes higher than over-discharge detector threshold, VD2 is released and the voltage of DOUT pin becomes "H" level. On the other hand, in terms of so called “Released by voltage level” version, in case that the charger is not connected, when the cell voltage becomes equal released voltage from over-discharge, over-discharge detector is released. In case that a charger is connected, and when the cell voltage becomes the released voltage from over-discharge, the over-discharge detector is released. An excess discharge -current and short circuit state can be sensed and cut off through the built in excess current detector, VD3, with DOUT being enabled to low level. Once after detecting excess di scharge-current or short circuit, the VD3 is released and D OUT level switches to high by detaching a battery pack from a load system. After detecting over-discharge, supply current will be kept extremely low by halting internal circuits' o p- eration. When the output of COUT is “H”, if V- pin level is set at Vss-2V, the delay time of detector can be shortened. Especially, the delay time of over-charge detector can be reduced into approximately 1/57. Therefore, testing time of protector circuit board can be reduced. Output type of C OUT and DOUT are CMOS. 6-pin, SOT-23-6 is available. No. EA-291-191004 ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 2 -

FEATURES

• Manufactured with High Voltage Tolerant Process ... Absolute Maximum Rating 3０V C version: (detecting over-discharge) Max. 0.1µA D/J/K version: (detecting over-discharge) Typ. 1.2µA/Max. 2.0µA (Topt=-5 to 55°C) ±30mV Over-discharge detector ±2.5% Excess discharge-current detector ± 15mV C/D version: 4.2V-4.5V step of 0.005V J version: 3.65V K version: 3.90V Over-discharge detector threshold C/D/J version: 2.1V-3.0V step of 0.100V K version: 1.9V-3.0V step of 0.100V Excess discharge-current threshold 0.05V-0.20V step of 0.005V Short Detector Threshold Fixed at 0.75V (Select among the options) Over-discharge detector Output Delay 20ms Excess discharge-current detector Output Delay 12ms(C Type) / 6ms(E Type) Short Circuit detector Output Delay 300µs(C Type) / 200µs(E Type)
• Output Delay Time Shortening Function .. At COUT is “H”, if V- level is set at –2V, the Output Delay time of all items except short -circuit can be reduced. (Delay Time for over-charge becomes about 1/57 of normal state.)
• Conditions for release over-charge detector With Latch function (C version) With Released voltage (D/J/K version)
• Conditions for Release over-discharge detector Latch Type: (C version)

APPLICATIONS

• Li+ / Li Polymer protector of over-charge, over-discharge, excess-current for battery pack
• High precision protectors for cell-phones and any other gadgets using on board Li+ / Li Polymer battery ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 3 - BLOCK DIAGRAMS C version Short Detector DOUT COUT V- Ｏscillator VD1 VD2 Level Shift VD3 Counter Logic Circuit Delay Logic Circuit VDD VSS DS Circuit D/J/K version Short Detector DOUT COUT V- Ｏscillator VD1 VD2 Level Shift VD3 Counter Logic Circuit Delay Logic Circuit VDD VSS DS Circuit ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 4 - SELECTION GUIDE In the R5475/ R5478xxxxx Series, three of the input threshold for over -charge, over-discharge, and excess discharge current detectors can be designated. Part Number is designated as follows: R547xN xxx x x-xx-xx ←Part Number a b c d e f Code Contents a Package Type R5475N: SOT-23-5 , R5478N: SOT-23-6 b Serial Number for the R5475/R5478 Series designating input four threshold for over-charge, over-discharge, and excess discharge-current detectors. c Designation of Output delay option of over-charge, and excess dis- charge-current. d Designation of version symbols C version: With Latch function after Over-charge and Over-discharge D version: Released by voltage level from Over-charge and Over-discharge J version: Released by voltage level from Over-charge and Over-discharge Over-charge level = 3.65V Only K version: Released by voltage level from Over-charge and Over-discharge Over-charge level = 3.90V Only e Taping Type: TR (refer to Taping Specification) f FF：Using Pb-free solder. PIN CONFIGURATIONS SOT-23-5 (R5475N) SOT-23-6 (R5478N) 5 4 1 2 3 6 4 1 2 3 ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 5 - PIN DESCRIPTION Pin No. Symbol Description SOT23-5 SOT23-6 4 1 DOUT Output of over-discharge detection, CMOS output 1 2 V- Pin for charger negative input 5 3 COUT Output of over-charge detection, CMOS output － 4 NC No Connection 2 5 VDD Power supply pin, the substrate voltage level of the IC. 3 6 VSS Vss pin. Ground pin for the IC ABSOLUTE MAXIMUM RATINGS VSS=0V Symbol Item Ratings Unit VDD Supply voltage -0.3 to 12 V Input Voltage V- pin VDD -30 to VDD +0.3 V VCOUT VDOUT Output voltage COUT pin DOUT pin VDD -30 to VDD +0.3 VSS -0.3 to VDD +0.3 V V PD Power dissipation 150 mW Topt Operating temperature range -40 to 85 °C Tstg Storage temperature range -55 to 125 °C *Note: Exposure to the condition exceeded Absolute Maximum Ratings may cause the permanent damages and affects the reliability and safety of both device and systems using the device. The functional operations cannot be guaranteed beyond specified values in the Recommended conditions. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause permanent damage and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recom- mended operating conditions, even if they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 6 - ELECTRICAL CHARACTERISTICS Unless otherwise specified, Topt=25°C *R5478N1xxEC Symbol Item Conditions Min. Typ. Max. Unit Note2 VDD1 Operating input voltage Voltage defined asVDD-VSS 1.5 5.0 V F Vst Minimum operating Voltage for 0V charging Voltage defined asVDD-V-, VDD-VSS=0V 1.8 V A VDET1 Over-charge threshold Detect rising edge of supply voltage R1=330Ω R1=330Ω (Topt=-5 to 55°C)*Note1 VDET1-0.025 VDET1-0.030 VDET1 VDET1 VDET1+0.025 VDET1+0.030 V V B tVREL1 Output delay of release from over-charge VDD=4.5V to 3.6V, V-=0V to 0.4V 11 16 21 ms C VDET2 Over-discharge threshold Detect falling edge of supply voltage VDET2×0.975 VDET2 VDET2×1.025 V D tVDET2 Output delay of over-discharge VDD=3.6V to 2.2V 14 20 26 ms D VDET3 Excess discharge-current threshold Detect rising edge of 'V-' pin voltage VDET3-0.015 VDET3 VDET3+0.015 V E tVDET3 Output delay of excess dis- charge-current VDD=3.0V, V-=0V to 0.4V 4 6 8 ms E tVREL3 Output delay of release from excess discharge-current VDD=3.0V, V-=3V to 0V 0.7 1.2 1.7 ms E Vshort Short protection voltage VDD=3.0V 0.50 0.75 0.95 V E Tshort Output Delay of Short protection VDD=3.0V, V-=0V to 3V 150 200 300 µs E Rshort Reset resistance for Excess dis- charge-current protection VDD=3.6V, V-=1V 25 50 75 kΩ F VDS Delay Shortening Mode input voltage VDD=4.4V -2.6 -2.0 -1.4 V G VOL1 Nch ON voltage of COUT Iol=50µA, VDD=4.5V 0.4 0.5 V H VOH1 Pch ON voltage of COUT Ioh=-50µA, VDD=3.9V 3.4 3.7 V I VOL2 Nch ON voltage of DOUT Iol=50µA, VDD=2.0V 0.2 0.5 V J VOH2 Pch ON voltage of DOUT Ioh=-50µA, VDD=3.9V 3.4 3.7 V K IDD Supply current VDD=3.9V, V- =0V 3.0 7.0 µA L IS Standby current VDD=2.0V 0.1 µA L *Note1: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser -trim, however, this specification is guaranteed by design, not mass production tested. *Note2: indicates test circuits shown in page 17-20. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 7 - *R5475N/R5478N1xxCD Unless otherwise specified, Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit Note2 VDD1 Operating input voltage Voltage defined asVDD-VSS 1.5 5.0 V F Vst Minimum operating Voltage for 0V charging Voltage defined asVDD-V-, VDD-VSS=0V 1.8 V A VDET1 Over-charge threshold Detect rising edge of supply voltage R1=330Ω R1=330Ω (Topt=-5 to 55°C)*Note VDET1-0.025 VDET1-0.030 VDET1 VDET1 VDET1+0.025 VDET1+0.030 V V B VREL1 Released Voltage from Over-charge Detect falling edge of supply voltage VREL1-0.05 VREL1 VREL1+0.05 V B tVREL1 Output delay of release from over-charge VDD=4.5V to 3.6V 11 16 21 ms B VDET2 Over-discharge threshold Detect falling edge of supply voltage VDET2×0.975 VDET2 VDET2×1.025 V D VREL2 Released Voltage from Over-discharge Detect rising edge of supply voltage VREL2×0.975 VREL2 VREL2×1.025 V D tVDET2 Output delay of over-discharge VDD=3.6V to 2.2V 14 20 26 ms D tVREL2 Output delay of release from over-discharge VDD=3V V-=3V to 0V 0.7 1.2 1.7 ms E VDET3 Excess discharge-current threshold Detect rising edge of 'V-' pin voltage VDET3-0.015 VDET3 VDET3+0.015 V E tVDET3 Output delay of excess dis- charge-current VDD=3.0V, V-=0V to 0.4V 8 12 16 ms E tVREL3 Output delay of release from excess discharge-current VDD=3.0V, V-=3V to 0V 0.7 1.2 1.7 ms E Vshort Short protection voltage VDD=3.0V 0.50 0.75 0.95 V E Tshort Output Delay of Short protection VDD=3.0V, V-=0V to 3V 230 300 500 µs E Rshort Reset resistance for Excess dis- charge-current protection VDD=3.6V, V-=1V 25 50 75 kΩ F VDS Delay Shortening Mode input voltage VDD=4.4V -2.6 -2.0 -1.4 V G VOL1 Nch ON voltage of COUT Iol=50µA, VDD=4.5V 0.4 0.5 V H VOH1 Pch ON voltage of COUT Ioh=-50µA, VDD=3.9V 3.4 3.7 V I VOL2 Nch ON voltage of DOUT Iol=50µA, VDD=2.0V 0.2 0.5 V J VOH2 Pch ON voltage of DOUT Ioh=-50µA, VDD=3.9V 3.4 3.7 V K IDD Supply current VDD=3.9V, V- =0V 3.0 7.0 µA L IS Standby current VDD=2.0V 1.2 2.0 µA L *Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser -trim, however, this specification is guaranteed by design, not mass production tested. *Note2: indicates test circuits shown in page 17-20. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 8 - *R5478N1xxCJ Unless otherwise specified, Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit Note2 VDD1 Operating input voltage Voltage defined asVDD-VSS 1.5 5.0 V F Vst Minimum operating Voltage for 0V charging Voltage defined asVDD-V-, VDD-VSS=0V 1.8 V A VDET1 Over-charge threshold Detect rising edge of supply voltage R1=330Ω R1=330Ω (Topt=-5 to 55°C)*Note VDET1-0.025 VDET1-0.030 VDET1 VDET1 VDET1+0.025 VDET1+0.030 V V B VREL1 Released Voltage from Over-charge Detect falling edge of supply voltage VREL1-0.05 VREL1 VREL1+0.05 V B tVREL1 Output delay of release from over-charge VDD=3.9V to 3.2V 11 16 21 ms B VDET2 Over-discharge threshold Detect falling edge of supply voltage VDET2×0.975 VDET2 VDET2×1.025 V D VREL2 Released Voltage from Over-discharge Detect rising edge of supply voltage VREL2×0.975 VREL2 VREL2×1.025 V D tVDET2 Output delay of over-discharge VDD=3.2V to 2.2V 14 20 26 ms D tVREL2 Output delay of release from over-discharge VDD=2V to 3.1V 0.7 1.2 1.7 ms E VDET3 Excess discharge-current threshold Detect rising edge of 'V-' pin voltage VDET3-0.015 VDET3 VDET3+0.015 V E tVDET3 Output delay of excess dis- charge-current VDD=3.0V, V-=0V to 0.4V 8 12 16 ms E tVREL3 Output delay of release from excess discharge-current VDD=3.0V, V-=3V to 0V 0.7 1.2 1.7 ms E Vshort Short protection voltage VDD=3.0V 0.50 0.75 0.95 V E Tshort Output Delay of Short protection VDD=3.0V, V-=0V to 3V 230 300 500 µs E Rshort Reset resistance for Excess dis- charge-current protection VDD=3.2V, V-=1.0V 25 50 75 kΩ F VDS Delay Shortening Mode input voltage VDD=4.4V -2.6 -2.0 -1.4 V G VOL1 Nch ON voltage of COUT Iol=50µA, VDD=4.5V 0.4 0.5 V H VOH1 Pch ON voltage of COUT Ioh=-50µA, VDD=3.2V 2.7 3.0 V I VOL2 Nch ON voltage of DOUT Iol=50µA, VDD=2.0V 0.2 0.5 V J VOH2 Pch ON voltage of DOUT Ioh=-50µA, VDD=3.2V 2.7 3.0 V K IDD Supply current VDD=3.2V, V- =0V 3.0 7.0 µA L IS Standby current VDD=2.0V 1.2 2.0 µA L *Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser -trim, however, this specification is guaranteed by design, not mass production tested. *Note2: indicates test circuits shown in page 17-20. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 9 - *R5478N1xxCK Unless otherwise specified, Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit Note2 VDD1 Operating input voltage Voltage defined asVDD-VSS 1.5 5.0 V F Vst Minimum operating Voltage for 0V charging Voltage defined asVDD-V-, VDD-VSS=0V 1.8 V A VDET1 Over-charge threshold Detect rising edge of supply voltage R1=330Ω R1=330Ω (Topt=-5 to 55°C)*Note VDET1-0.025 VDET1-0.030 VDET1 VDET1 VDET1+0.025 VDET1+0.030 V V B VREL1 Released Voltage from Over-charge Detect falling edge of supply voltage VREL1-0.05 VREL1 VREL1+0.05 V B tVREL1 Output delay of release from over-charge VDD=3.9V to 3.2V 11 16 21 ms B VDET2 Over-discharge threshold Detect falling edge of supply voltage VDET2×0.975 VDET2 VDET2×1.025 V D VREL2 Released Voltage from Over-discharge Detect rising edge of supply voltage VREL2×0.975 VREL2 VREL2×1.025 V D tVDET2 Output delay of over-discharge VDD=3.2V to 1.9V 14 20 26 ms D VDET3 Excess discharge-current threshold Detect rising edge of 'V-' pin voltage VDET3-0.015 VDET3 VDET3+0.015 V E tVDET3 Output delay of excess dis- charge-current VDD=3.0V, V-=0V to 0.4V 8 12 16 ms E tVREL3 Output delay of release from excess discharge-current VDD=3.0V, V-=3V to 0V 0.7 1.2 1.7 ms E Vshort Short protection voltage VDD=3.0V 0.50 0.75 0.95 V E Tshort Output Delay of Short protection VDD=3.0V, V-=0V to 3V 230 300 500 µs E Rshort Reset resistance for Excess dis- charge-current protection VDD=3.2V, V-=1.0V 25 50 75 kΩ F VDS Delay Shortening Mode input voltage VDD=4.4V -2.6 -2.0 -1.4 V G VOL1 Nch ON voltage of COUT Iol=50µA, VDD=4.5V 0.4 0.5 V H VOH1 Pch ON voltage of COUT Ioh=-50µA, VDD=3.2V 2.7 3.0 V I VOL2 Nch ON voltage of DOUT Iol=50µA, VDD=1.9V 0.2 0.5 V J VOH2 Pch ON voltage of DOUT Ioh=-50µA, VDD=3.2V 2.7 3.0 V K IDD Supply current VDD=3.2V, V- =0V 3.0 7.0 µA L IS Standby current VDD=2.0V 1.2 2.0 µA L *Note: Considering of variation in process parameters, we compensate for this characteristic related to temperature by laser -trim, however, this specification is guaranteed by design, not mass production tested. *Note2: indicates test circuits shown in page 17-20. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 10 - OPERATION
• VD1 / Over-Charge Detector The VD1 monitors VDD pin voltage while charge the battery pack. When the VDD voltage crosses over-charge detector threshold VDET1 from a low value to a value higher than the VDET1, the VD1 can detect over-charge and an external charge control Nch MOSFET turn off with COUT pin being at "L" level. In terms of C version, to reset the VD1 making the COUT pin level to "H" again after detecting over-charge, in such conditions that a time when the V DD voltage is down to a level lower than over -charge voltage, by con- necting a kind of loading to VDD after disconnecting a charger from the battery pack. Output voltage of COUT pin becomes "H", and it makes an ex ternal Nch MOSFET turn on, and charge cycle is available. In other words, once over-charge is detected, even if the supply voltage becomes low enough, if a charger is continu ously connected to the battery pack, recharge is not possible. Therefore this over-charge detector has no hysteresis. To judge whether or not load is connected, the built -in excess-discharge current detector is used. In other words, by connecting some load, V- pin voltage becomes equal or more than excess-discharge current detector threshold, and reset the over-charge detecting state. In terms of D/J/K version, after detecting over- charge, if V DD pin voltage is lower than released from over-charge, even if a charger is connected, over-charge detector is released. Further, in case that VDD pin level is lower than detector threshold and higher than released voltage from over-charge, if a charger is removed and some load is connected, over-charge detector is also released. After detecting over-charge with the VDD voltage of higher than VDET1, connecting system load to the battery pack makes load current allowable through parasitic diode of external charge control FET. The COUT level would be "H" when the VDD level is down to a level below the VDET1 by continuous drawing of load current. Internal fixed output delay times for over- charge detection and release from over-charge exist. Even when the VDD pin level becomes equal or higher level than VDET1 if the VDD voltage would be back to a level lower than the VDET1 within a time period of the output delay time, VD1 would not output a signal for turning off the charge control FET. Besides, after detecting over -charge, while the VDD is lower than over-charge detector, even if a charger is removed and a load is connected, if the voltage is recovered within output delay time of release from over-charge, over-charge state is not released. A level shifter incorporated in a buffer driver for the C OUT pin makes the "L" level of C OUT pin to the V - pin voltage and the "H" level of COUT pin is set to VDD voltage with CMOS buffer.
• VD2 / Over-Discharge Detector The VD2 is monitoring a VDD pin voltage. When the VDD voltage crosses the over-discharge detector threshold VDET2 from a high value to a value lower than the VDET2, the VD2 can detect an over-discharge and the external discharge control Nch MOSFET turns off with the DOUT pin being at "L" level. In terms of C version, to reset the VD2 with the DOUT pin level being "H" again after detecting over discharge, it is necessary to connect a charger to the battery pack. When the V DD voltage stays under over- discharge detector threshold V DET2, charge-current can flow through parasitic diode of an external discharge control MOSFET, then after the V DD voltage comes up to a value larger than V DET2, then, DOUT becomes "H" and di s- charging process would be able to advance through ON state MOSFET for discharge control. Connecting a charger to the battery pack makes the D OUT level being "H" instantaneously whe n the V DD voltage is higher than VDET2. In terms of D/J/K version, released operation by connecting a charger is same as C version. However, without a charger, if VDD pin voltage is equal or more than the released voltage from over-discharge, DOUT pin becomes “H” immediately. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 11 - When a cell voltage equals to zero, if the voltage of a charger is equal or more than 0V- charge minimum voltage (Vst), COUT pin becomes "H" and a system is allowable to charge. An output delay time for over-discharge detection is fixed internally. When the VDD level is down to a equal or lower level than VDET2 if the VDD voltage would be back to a level higher than the VDET2 within a time period of the output delay time, VD2 would not output a signal for turning off the discharge control FET. Output delay time for release from over-discharge is also set. After detecting over-discharge by VD2, supply current would be reduced and be into standby by halting unnecessary circuits and consumption current of IC itself is made as small as possible. The output type of DOUT pin is CMOS having "H" level of VDD and "L" level of VSS.
• VD3 /Excess discharge-current Detector, Short Circuit Protector Both of the excess current detector and short circuit protection can work when the both of control FETs are in "ON" state. When the V - pin voltage is up to a value between the short protection voltage Vshort /V DD and excess discharge-current threshold V DET3, VD3 operates and further soaring of V - pin voltage higher than Vshort makes the short circuit pro tector enabled. This leads the external discharge control Nch MOSFET turns off with the DOUT pin being at "L" level. An output delay time for the excess discharge-current detector is internally fixed. A quick recovery of V- pin level from a value between Vshort and VDET3 within the delay time keeps the discharge control FET staying "H" state. Output delay time for Release from excess discharge -current detection is also set. When the short circuit protector is enabled, the DOUT would be "L" and the delay time is also set. The V - pin has a built -in pull-down resistor to the Vss pin , that is, the resistance to release from e x- cess-discharge current. After an excess discharge -current or short circuit protection is detected, removing a cause of excess di s- charge-current or external short circuit makes an external discharge control FET to an "ON" state automati- cally with the V- pin level being down to the VSS level through built-in pulled down resistor. The reset resistor of excess discharge-current is off at normal state. Only when detecting excess discharge-current or short circuit, the resistor is on. Output delay time of excess discharge-current is set shorter than the delay time for over-discharge detector. Therefore, if VDD voltage would be lower than VDET2 at the same time as the excess discharge-current is detected, the R5478xxxxxx is at excess discharge-current detection mode. By disconnecting a load, VD3 is automatically released from excess discharge-current.
• DS (Delay Shorten) function Output delay time of over-charge, over-discharge, and release from those detecting modes can be shorter than those setting value by forcing equal or less than the delay shortening mode voltage to V- pin. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 12 - TIMING CHART 1. Over-charge (Latch Type) voltage, Excess charge current Operation VDD COUT Charge Current VDD VSS VDD VDET3 Connect Load VDET1 t Connect Charger Connect Load Charge/ Discharge Current Discharge Current Disconnect Charger and Connect Load tVREL1 Connect Charger tVDET1 tVDET1 tVREL1 t t t ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 13 - 2. Over-charge (Released by voltage Type) voltage, Excess charge current Operation VDD COUT Charge Current Discharge Current VDD VSS VDET3 Connect Charger Disconnect Charger Connect Load Connect Charger VDET1 t t t t Charge/ Discharge Current VDD Charger OPEN Connect Load tVREL1 VREL1 tVREL1 tVDET1 tVDET1 ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 14 - 3. Over-discharge (Latch Type), Excess discharge current, Short circuit Excess Discharge Current Short VDD DOUT Charge Current VDD VSS VDD VSS VDET３ Vshort Connect Load Connect Charger VDET2 tVDET2 t t t t Open tVREL2 tVREL2 tVREL3 tVREL3 Connect Load Open Discharge Current Charge / Discharge Current Connect Charger tshort tVDET2 tVDET3 ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 15 - 4. Over-discharge (Released by voltage Type), Excess discharge current, Short circuit VDD DOUT Charge Current Discharge Current VDD VSS VSS VDET3 Connect Load Connect Charger VDET2 t t t t Charge/ Discharge Current Excess Discharge Current VDD Open Vshort Open Short tVREL3 tVREL2 tVREL3 tVREL2 tVDET2 tVDET2 tVDET3 tshort ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 16 - TYPICAL APPLICATION APPLICATION HINTS R1 and C1 will stabilize a supply voltage to the R5478xxxxxx. A recommended R1 value is less than 1kΩ. A larger value of R1 leads higher detection voltage, makes some errors because of some conduction current may flow in the R5478xxxxxx. Further, to stabilize the operation of the R5478, use the C1 with the value in the range from 0.001uF to 0.01uF. To choose the most suitable value of C1, fully evaluation is necessary. R1 and R2 can operate also as parts for current limit circuit against reverse charge or applying a charger with e xcess charging voltage to the R5478xxxxxx, battery pack. Small value o f R1 and R2 may cause over-power consumption rating of power dissipation of the R5478xxxxx. Thus, the total value of 'R1+R2' should be equal or more than 1kΩ. On the other hand, if large value of R2 is set, release from over-discharge by connecting a charger might not be possible. Recommended R2 value is equal or less than 10kΩ. The typical application circuit diagram is just an example. This circuit performance largely depends on the PCB layout and external components. In the actual application, fully evaluation is necessary. Over-voltage and the over current beyond the absolute maximum rating should not be forced to the pr o- tection IC and external components. We are making our continuous effort to improve the quality and reliability of our products, bu t semicon- ductor products are likely to fail with certain probability. In order prevent any injury to persons or damages to property resulting from such failure, customers should be careful enough to incorporate safety measures in their design, such as redundancy feature, fire-containment feature and fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from misuse or inappropriate use of the products. VDD COUT DOUT VSS 0.01uF 1kΩ 330Ω R5478 ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 17 - TEST CIRCUITS 1, Minimum Operating Voltage for 0V Charging (0V battery charge function “available”)(Test circuit A) The minimum operating voltage for 0V charging (Vst) is defined as the voltage between the VDD pin and the V- pin at which COUT goes to “H” (VDD - 0.1V or higher) when the voltage V2 is gradually decreased from the starting condition of V1 = 0V ,V2 = -0.3V. 2, Over-charge Threshold Voltage (Test circuit B) The over-charge threshold voltage(VDET1) is defined as the voltage between the VDD pin and the VSS pin at which COUT goes from “H” to “L” when the voltage V1 is gradually increased from the starting condition of V1 = 3.5V with R1=330 Ω between VDD and Pack+. 3, Release voltage from Over-charge (Test circuit B) *Except EC version The release voltage from over-charge (VREL1) is defined as the volta ge between the VDD pin and the VSS pin at which COUT goes from “L” to “H” when the voltage V1 is then gradually decreased with R1=330 Ω between VDD and Pack+. 4, Output Delay of Over -charge (Test circuit B) The output delay of over-charge (tVDET1) is the time needed for COUT to change from “H” to “L” just after the voltage V1 momentarily increases (within 10µ s) from o ver-charge threshold v oltage (VDET1) – 0.2V to over-charge threshold voltage (VDET1) + 0.2V under the set conditions of V2 = 0V. 5, Release Delay for VD1 (Test circuit B) *Except EC version The release Delay for VD1 (tVREL1) is the time needed for COUT to change from “L” to “H” just after the voltage V1 momentarily decreases (within 10µ s) from o ver-charge threshold v oltage (VDET1) + 0.2V t o overcharge release voltage (VREL1) - 0.2V under the set conditions of V2 = 0V. 6, Release Delay for VD1 (Test circuit C) *for EC version The release Delay for VD1 (tVREL1) is the time needed for COUT to change from “L” to “H” just after the voltage V2 momentarily increases (within 10 µs) from 0V to excess discharge- current threshold (VDET3) + 0.1V under the set conditions of V1 from over -charge threshold v oltage (VDET1) + 0.2V to over -charge threshold voltage (VDET1) - 0.2V. 7, Overdischarge Threshold Voltage (Test circuit D) The overdischarge threshold voltage(VDET2) is defined as the voltage between the VDD pin and the VSS pin at which DOUT goes from “H” to “L” when the voltage V1 is gradually decreased from the starting condition of V1 = 3.5V , V2 = 0V. 8, Released Voltage from Over -discharge (Test circuit E) *Except EC version The released voltage from over-discharge (VREL2) is defined as the voltage between the VDD pin and the VSS pin at which DOUT goes from “L” to “H” when the voltage V1 is then gradually increased under the set conditions of V2 = V1. 9, Output Delay of Over -discharge (Test circuit D) The output delay of over-dischar ge (tVDET2) is the time needed for DOUT to change from “H” to “L” just after the voltage V1 momentarily decreases (within 10µs) from over-discharge threshold voltage (VDET2) + 0.2V to over-discharge threshold voltage (VDET2) - 0.2V under the set conditions of V2 = 0V. 10, Release Delay for VD2 (Test circuit E) *Except EC version The release delay for VD2 (tVREL2) is the time needed for DOUT to change from “L” to “H” just after the voltage V1 momentarily increases (within 10µ s) from o ver-discharge threshold voltage (VDET2) - 0.2V to ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 18 - over-discharge release voltage (VREL2) + 0.2V under the set conditions of V2 = V1. 11, Release Delay for VD2 (Test circuit D) *For EC version The release delay for VD2 (tVREL2) is the time needed for DOUT to change from “L” to “H” just after the voltage V1 momentarily increases (within 10µ s) from o ver-discharge threshold voltage (VDET2) - 0.2V to over-discharge release voltage (VREL2) + 0.2V under the set conditions of V2 = 0V. 12, Excess discharge -current threshold (Test circuit E) Excess discharge-current threshold (VDET3) is defined as the voltage between the V - pin and the VSS pin at which DOUT goes from “H” to “L” when the voltage V2 is then gradually increased from the starting condition of V1 = 3.0V , V2 = 0V. 13, Output delay of excess discharge- current, Release Delay for VD 3 (Test circuit E) The output delay of excess dischar ge-current (tVDET3) is the time needed for DOUT to go to “L” after the voltage V2 momentarily increases (within 10µ s) from 0V to 0.40V under the set conditions of V1 =3.0V. The Release Delay for VD3 (tVREL3) is the time needed for DOUT to go to “H” after the voltage V2 m o- mentarily decreases (within 10µ s) from 3.0V to 0V under the set conditions of V1 =3.0V. 14, Short Protection Voltage (Test circuit E) The short protection voltage (Vshort) is defined as the voltage between the V - pin and the VSS pin whose delay time for changing DOUT from “H” to “L” lies between the minimum and the maximum value of load short-circuiting delay time when the voltage V2 is increased rapidly (within 10 µs) from the starting condition of V1 = 3.0V , V2 = 0V. 15, Delay Time for Short Protection (Test circuit E) The delay time for short protection (tshort) is the time needed for DOUT to go to “L” after the voltage V2 momentarily increases (within 10 µs) from 0V to 3.0V under the set conditions of V1 =3.0V. 16, Reset Resistance for Excess Current Protection (Test circuit F) The Reset Resistance for Excess Current Protection (Rshort) is the resistance between the V - pin and the VSS pin under the set conditions of V1 =3.6V, V2 = 1.0V. 17, Delay Time Shortening Mode Voltage (Test ci rcuit G) The Delay Time Shortening Mode Voltage (VDS) is the voltage is defined as the voltage between the V - pin and VSS pin at which tVDET1 becomes about 1/57 at V2 = 0V when the voltage V2 is then gradually d e- creased from the starting condition of V2 = 0V. 18, Nch ON-Voltage of C OUT (Test circuit H) The Nch ON-Voltage of C OUT (VoL1) is the resistance at the COUT pin under the set conditions of V1 = 4.5V, V2 = 0V, I3 = 50uA. 19, Pch ON-Voltage of C OUT (Test circuit I) The Pch ON-Voltage of COUT (VoH1) is the Voltage at the COUT pin under the set conditions of V1 = 3.9V for EC,CD version / 3.8V for CK version / 3.5V for CJ version, V2 = 0V, I3 = - 50uA. 20, Pch ON-Voltage of D OUT (Test circuit J) Pch ON-Voltage of D OUT (VoH2) is the Voltage at the DOUT pin under the set conditions of V1 = 3.9V for EC,CD version / 3.8V for CK version / 3.5V for CJ version, V2 = 0V, I4 = - 50uA. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 19 - 21, Nch ON-Voltage of DOUT (Test circuit K) Nch ON-Voltage of DOUT (VoL2) is the Voltage at the DOUT pin under the set conditions of V1 = 2.0V, V2 = 0V, I4 = 50uA. 22, Supply Current (Test circuit L) The supply current (IDD) is the current that flows through the VDD pin(IDD) under the set conditions of V1 = 3.9V for EC,CD version / 3.8V for CK version / 3.5V for CJ version and V2 = 0V (normal status). 23, Standby Current (Test circuit L) The standby current (Istandby) is the current that flows through the VDD pin(IDD) under the set conditions of V1 = V2 = 2.0V (overdischarge status). V1 : The voltage between VDD pin and VSS pin. V2 : The voltage between V - pin and VSS pin. I3 : The current flow into COUT pin. I4 : The current flow into DOUT pin. ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 20 - A B C OSCILLOSCOPE VDD COUT VSS V V E D V F G I V H V A J V A K V A L V A A VDD VSS COUT VDD VSS COUT VDD VSS DOUT VDD VSS COUT VDD VSS COUT VDD VSS COUT VDD VSS DOUT VDD VSS VDD DOUT VSS VDD VSS DOUT V VDD VSS DOUT A ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 21 - Typical Characteristics were obtained with using those above circuits: Test Circuit A: Typical characteristics 1) Test Circuit B: Typical characteristics 2) Test Circuit C: Typical characteristics 3) 4) Test Circuit D: Typical characteristics 5) 6) 7) Test Circuit E: Typical characteristics 8) 9) 10) 11) 12) Test Circuit F: Typical characteristics 13) Test Circuit G: Typical characteristics 14) Test Circuit H: Typical characteristics 15) Test Circuit I: Typical characteristics 16) Test Circuit J: Typical characteristics 17) Test Circuit K: Typical characteristics 18) Test Circuit L: Typical characteristics 19) 20) ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 22 - TYPICAL CHARACTERISTICS 1) Minimum Operating Voltage for 0V Cell Charging vs. Temperature 2) Over-Charge Threshold vs. Temperature R5478N128EC Vdd-Vss=0V R5478N128EC 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 -50 0 50 100 Temperature Topt 0V cell Charge Minimum Operating Voltage Vst(V) 4.25 4.26 4.27 4.28 4.29 4.3 4.31 4.32 -50 0 50 100 Temperature Topt Over-charge Detector Threshold VDET1(V) 3) Output Delay of Over-charge vs. Temperature 4) Output Delay of Release from Over-charge vs. Temperature R5478N128EC R5478N128EC 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 -50 0 50 100 Temperature Topt Over-charge Detector Output Delay Time tVDET1(s) -50 0 50 100 Temperature Topt Over-charge Released Delay Time tVREL1(ms) 5) Over discharge Threshold vs. Temperature 6) Output Delay of Over-discharge vs. Temperature R5478N128EC R5478N128EC 2.77 2.78 2.79 2.8 2.81 2.82 2.83 -50 0 50 100 Temperature Topt Over-discharge Detector Threshold VDET2(V) -50 0 50 100 Temperature Topt Over-discharge Detector Output Dekay Time tVDET2(ms) (°C) (°C) (°C) (°C) (°C) (°C) ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 23 - 7) Output Delay of Release from Over-discharge vs. 8) Excess Discharge-current Threshold vs. Temperature Temperature R5478N128EC R5478N128EC 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 -50 0 50 100 Temperature Topt Output Delay for Release from Over- discharge tVREL2(ms) 0.035 0.04 0.045 0.05 0.055 0.06 0.065 -50 0 50 100 Temperature Topt Excess Discharge Current Detector Threshold VDET3(V) 9) Output Delay of Excess Discharge-current vs. 10) Output Delay of Release from Excess Dicharge- Temperature current vs. Temperature R5478N128EC R5478N128EC -50 0 50 100 Temperature Topt Output Delay Time for Excess discharge current Detecting tVDET3(ms) 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 -50 0 50 100 Temperature Topt Output Delay Time for Release Excess Discharge Current tVREL3(ms) 11) Short Detector Voltage vs. Temperature 12) Output Delay of Short Protection vs. Temperature R5478N128EC R5478N128EC 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 -50 0 50 100 Temperature Topt Short Detector Threshold Vshort(V) 100 200 300 400 500 600 700 -50 0 50 100 Temperature Topt Short Detector Output Delay Time tshort(us) (°C) (°C) (°C) (°C) (°C) (°C) ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 24 - 13) Reset Resistance for Excess Discharge 14) V- pin Test time shortening input Voltage vs. current Protection vs. Temperature Temperature R5478N128EC R5478N128EC -50 0 50 100 Temperature Topt Release Resistance for Excess Discharge Current Rshort(kohm) -2.6 -2.4 -2.2 -1.8 -1.6 -1.4 -50 0 50 100 Temperature Topt V- pin Test shortening input Voltage VIH(V) 15) Nch On Voltage (COUT pin) vs. Temperature 16) Pch On Voltage (COUT pin) vs. Temperature I OL=50uA,Vdd=4.5V Ioh=-50uA, Vdd=3.9V R5478N128EC R5478N128EC 0.1 0.2 0.3 0.4 0.5 -50 0 50 100 Temperature Topt Nch ON Voltage (Cout pin) Vol1(V) 3.5 3.6 3.7 3.8 3.9 -50 0 50 100 Temperature Topt Pch ON Voltage (Cout pin) Voh1(V) 17) Nch On Voltage (DOUT pin) vs. Temperature 18) Pch ON Voltage of DOUT vs. Temperature Iol=50uA, VDD=2V Ioh=-50uA, Vdd=3.9V R5478N128EC R5478N128EC 0.1 0.2 0.3 0.4 -50 0 50 100 Temperature Topt Nch ON Voltage (Dout pin) Vol2(V) 3.5 3.6 3.7 3.8 3.9 -50 0 50 100 Temperature Topt Pch ON Voltage (Dout pin) Voh2 (V) (°C) (°C) (°C) (°C) (°C) (°C) ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 25 - 19) Supply Current vs. Temperature 20) Standby Current vs. Temperature Vdd=3.9V, V-=0V Vdd=3.9V, V-=0V R5478N128EC R5478N128EC -50 0 50 100 Temperature Topt Supply Current Idd (uA) 0.02 0.04 0.06 0.08 0.1 -50 0 50 100 Temperature Topt Standby Current Is(uA) (°C) (°C) ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

• 26 - R5475N/R5478N Series Vdet1 Vrel1 Vdet2 Vrel2 Vdet3 tVdet1 tVdet2 tVdet3 tShort (V) (V) (V) (V) (V) (s) (ms) (ms) (μs) R5478N128EC 4.280 - 2.800 - 0.050 1 20 6 200 OK SOT-23-6 R5478N176EC 4.280 - 2.300 - 0.130 1 20 6 200 OK SOT-23-6 (as of 2012/07/04) R5478 N 128 E C Package Type Function Version R5475N : SOT23-5 C : Over-Charge = Latch Over-Discharge = Latch R5478N : SOT23-6 D : Over-Charge = Auto-Release Over-Discharge = Auto Release J : Over-Charge = Auto-Release Over-Discharge = Auto Release Vdet1=3.65V only K : Over-Charge = Auto-Release Over-Discharge = Auto Release Vdet1=3.90V only Vdet2=1.9～3.0V Delay Time Version Voltage Version tVdet1 tVdet2 tVdet3 tShort (s) (ms) (ms) (μs) R5478N xxx EC 1 20 6 200 R5475N xxx CD 1 20 12 300 R5478N xxx CD 1 20 12 300 R5478N xxx CJ 1 20 12 300 R5478N xxx CK 1 20 12 300 Code 0V Charge Package Code Return from Over-Charge Return from Over-Discharge Auto-Release Auto-Release Auto-Release Auto-Release Latch Latch Auto-Release Auto-Release Auto-Release Auto-Release ＊R5475N (SOT-23-5) is the discontinued product as of January, 2017.

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