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XC6220C30BER-G Datasheet(PDF) 10 Page - Torex Semiconductor |
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XC6220C30BER-G Datasheet(HTML) 10 Page - Torex Semiconductor |
10 / 30 page 10/30 XC6220 Series ■ NOTES ON USE <CL High Speed Auto-Discharge Function> The XC6220B/D series can quickly discharge the electric charge at the output capacitor (CL), when a low signal to the CE pin, which enables the whole IC circuit put into an OFF state, is inputted to the CE pin via the N-channel transistor located between the VOUT pin and the VSS pin (cf. BLOCK DIAGRAM). The CL auto-discharge resistance value is fixed to 460Ω (VIN=6.0V, VOUT=5.0V at TYP.). The discharge time of the output capacitor (CL) is set by the CL auto-discharge resistance (RDCHG) and the output capacitor (CL). By setting a time constant of the CL auto-discharge resistance value [RDCHG] and an output capacitor value (CL) as τ(τ=C x RDCHG), the output voltage after discharge via the N channel transistor is calculated by the following formulas. V = VOUT x e –t/τ, or t=τln( VOUT(E) / V ) where V : Output voltage after discharge VOUT(E) : Output voltage t: Discharge time τ : CL auto-discharge resistance RDCHG×Output capacitor (CL) value C) For the XC6220A/C series, output voltage may rises when in the high stand-by mode. Please note that in that case, the typical characteristics may worse. When the XC6220A/C series is used, please be noted the characteristics shown below. XC6220A 501x x 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 20 40 60 80 100 Ta (℃) Output V ol ta g e vs . Input V ol ta g e 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 1.0 2.0 3.0 4.0 5.0 6.0 VIN (V) <Thermal Shutdown> When the junction temperature of the built-in driver transistor reaches the temperature limit level (150℃ TYP.), the thermal shutdown circuit operates and the driver transistor will be turned OFF. The IC resumes its operation when the thermal shutdown function is released and the IC’s operation is automatically restored because the junction temperature drops to the level of the thermal shutdown release voltage. <Inrush Current Protection> The XC6220 series includes an inrush current protection circuit. The inrush current protection circuit suppresses inrush current charged to CL when the IC starts up to 700 mA (MAX.) for approximately 1 ms. * Please note that the device can not provide the output current beyond 700 mA for a period of approximately 1 ms after the CE pin goes high. ■ OPERATIONAL EXPLANATION (Continued) 1. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded. 2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please strengthen VIN and VSS wiring in particular. 3. Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible. |
Similar Part No. - XC6220C30BER-G |
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Similar Description - XC6220C30BER-G |
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