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S19254XXXH Datasheet(PDF) 7 Page - Seiko Instruments Inc |
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S19254XXXH Datasheet(HTML) 7 Page - Seiko Instruments Inc |
7 / 32 page FOR AUTOMOTIVE 105 °C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19254xxxH Series 7 Table 6 (2 / 2) (Tj = −40°C to +105°C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit ON / OFF pin input voltage "H" VSH VIN = 2.5 V, RL = 1 k Ω, determined by VOUT output level VOUT(S) < 1.5 V 2.1 − − V 4 VIN = VOUT(S) + 1.0 V, RL = 1 k Ω, determined by VOUT output level 1.5 V ≤ VOUT(S) 2.1 − − V 4 ON / OFF pin input voltage "L" VSL VIN = 2.5 V, RL = 1 k Ω, determined by VOUT output level VOUT(S) < 1.5 V − − 0.6 V 4 VIN = VOUT(S) + 1.0 V, RL = 1 k Ω, determined by VOUT output level 1.5 V ≤ VOUT(S) − − 0.6 V 4 ON / OFF pin input current "H" ISH VIN = 6.5 V, VON / OFF = 6.5 V 0.8 2.5 7.8 μA4 ON / OFF pin input current "L" ISL VIN = 6.5 V, VON / OFF = 0 V −0.1 − 0.1 μA4 Ripple rejection |RR| VIN = 3.0 V, f = 1 kHz, ΔVrip = 0.5 Vrms, IOUT = 100 mA 1.0 V ≤ VOUT(S) < 1.5 V − 60 − dB 5 1.5 V ≤ VOUT(S) < 2.0 V − 55 − dB 5 VIN = VOUT(S) + 1.0 V, f = 1 kHz, ΔVrip = 0.5 Vrms, IOUT = 100 mA 2.0 V ≤ VOUT(S) < 2.6 V − 55 − dB 5 2.6 V ≤ VOUT(S) ≤ 5.5 V − 50 − dB 5 Short-circuit current Ishort VIN = 2.5 V, ON / OFF pin = ON, VOUT = 0 V, Ta = +25°C VOUT(S) < 1.5 V − 330 − mA 3 VIN = VOUT(S) + 1.0 V, ON / OFF pin = ON, VOUT = 0 V, Ta = +25°C 1.5 V ≤ VOUT(S) − 330 − mA 3 Thermal shutdown detection temperature TSD Junction temperature − 170 − °C − Thermal shutdown release temperature TSR Junction temperature − 135 − °C − Discharge shunt resistance during power-off RLOW VIN = 6.5 V, VOUT = 0.1 V − 100 − Ω 6 ON / OFF pin pull-down resistance RPD − 1.3 4.0 12 M Ω 4 *1. VOUT(S): Set output voltage VOUT(E): Actual output voltage Output voltage when fixing IOUT (= 100 mA) and inputting 2.5 V or VOUT(S) + 1.0 V. *2. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current. *3. Vdrop = VIN1 − (VOUT3 × 0.98) VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltage. VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V, and IOUT = 300 mA or 1000 mA. *4. The dropout voltage is limited by the difference between the input voltage (min. value) and the set output voltage. In case of 1.0 V ≤ VOUT(S) < 1.5 V: 2.5 V − VOUT(S) = Vdrop In case of 1.5 V ≤ VOUT(S) < 2.0 V: (VOUT(S) + 1.0 V) − VOUT(S) = 1.0 V *5. Due to limitation of the power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation when the output current is large. This specification is guaranteed by design. |
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