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7 / 38 page LC79451KB No.A2223-7/38 5-3. Electrical Characteristics DC Characteristics (Case without the special mention VDD = +2.5V, VDD2 = +2.7V, VSS = 0V, Ta=+25°C) Parameter Symbol Condition min typ max Unit Note Input leak current IIL VIN = 0V to VDD -1 - 1 μA *1 Standby current VDD IDDS All Circuit Stops 0 - 1 μA *2 Standby current VDD2 IDD2S (RESET = L) 0 - 1 μA *2 Operating current VDD IDD SPI (10MHz) - 400 480 μA Operating current VDD2 IDD2 - 30 36 μA *3 VOH IOUT = -0.5mA VDD - 0.36 VDD - 0.2 VDD V *4 VOL1 IOUT = +0.5mA 0 0.1 0.18 V *4 Output voltage VOL2 IOUT = +3mA 0 - 0.4 V *5 <Output Driver Characteristics> SEG output resistance VOUT2 RON1 VOUT = VOUT2 -0.5V 8 10 12 k Ω SEG output resistance VSS RON2 VOUT = +0.5V 7.5 10 12.5 k Ω SEG output resistance VOUT3 RON3 VOUT = VOUT3 +0.5V 8 10 12 k Ω <Charge-pump Characteristics> VOUT2NL1 V *6, *7 Output voltage VOUT2 VOUT2NL2 No Load 14.25 15.00 15.75 V *6, *8 VOUT3NL1 V *6, *7 Output voltage VOUT3 VOUT3NL2 No Load -15.75 -15.00 -14.25 V *6, *8 VOUT2L1 0.90 × VOUT2 - VOUT2 V *6, *7 Load output voltage VOUT2 VOUT2L2 Load Current = -100 μA 0.95 × VOUT2 - VOUT2 V *6, *8 VOUT3L1 VOUT3 - 0.90 × VOUT3 V *6, *7 Load output voltage VOUT3 VOUT3L2 Load Current = +100 μA VOUT3 - 0.95 × VOUT3 V *6, *8 Load voltage ratio regulation VRATIO 0.97 1 1.03 - *6, *9 <Oscillator Characteristics> Oscillator frequency Fclk VDD = 1.6V to 3.6V VDD2 = 1.8V to 3.6V 31.04 32.00 32.96 kHz *10 <Discharge Characteristics> Discharge resistance VOUT2 RDON1 VOUT2 = +15V 8 10 12 k Ω *11a Discharge resistance VOUT3 RDON2 VOUT3 = -15V 8 10 12 k Ω *11b Note: *1. For RESET, SCL, SDA, CS, ID1, ID2, IFSEL, SPIDRW pin. *2. The maximum current is prescribed with the limit value of the measuring instrument. *3. The state of the circuit as follows. Oscillator operates, charge-pump operates, output driver stops (No load), charge-pump voltage is in a stable state. Charge-pump frequency 1kHz (control register 1 : CP_F10 = 0, CP_F11 = 0, CP_F12 = 0) Charge-pump reference voltage 2.5V (control register 2 : VREGSEL=1) *4. For BUSY, DAOUT pin. *5. For SDA pin. *6. Use external capacitors of the recommended capacitance value. *7. Charge-pump frequency 32kHz (control register 1 : CP_F10 = 1, CP_F11 = 1, CP_F12 = 1) Charge-pump reference voltage 1.25V (control register 2 : VREGSEL = 0) *8. Charge-pump frequency 32kHz (control register 1 : CP_F10 = 1, CP_F11 = 1, CP_F12 = 1) Charge-pump reference voltage 2.5V (control register 2 : VREGSEL = 1) *9. The change ratio of the charge-pump voltage by the load. (Output voltage VOUT2/Output voltage VOUT3) / (Load output voltage VOUT2/Load output voltage VOUT3) *10. Charge-pump operates. *11. Charge-pump stops. (*11a) Between VOUT2 and VSS. (*11b) Between VOUT3 and VSS. |
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