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ISL6425ER-T Datasheet(PDF) 6 Page - Intersil Corporation |
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ISL6425ER-T Datasheet(HTML) 6 Page - Intersil Corporation |
6 / 12 page 6 FN9176.1 February 8, 2005 LINEAR REGULATOR Drop-Out Voltage Iout = 450mA (Note 4) - 1.2 - V DSQIN, SEL18V INPUT PINs (Note 6) Asserted Low -- 0.8 V Asserted HIGH 1.7 - - V Input Current -1- µA CURRENT SENSE Input Bias Current IBIAS - 700 - nA Overcurrent Threshold Static current mode, DCL = H 325 400 500 mV ERROR AMPLIFIER Open Loop Voltage Gain AOL (Note 4) 70 88 - dB Gain Bandwidth Product GBP (Note 4) 10 - - MHz PWM Maximum Duty Cycle 90 93 - % Minimum Pulse Width (Note 4) - 20 - ns OSCILLATOR Oscillator Frequency fo Fixed at (10)(ftone) 200 220 240 kHz THERMAL PROTECTION Thermal Shutdown Temperature Shutdown Threshold (Note 4) - 150 - Temperature Shutdown Hysteresis (Note 4) - 20 - NOTES: 3. Internal Digital Soft-start 4. Voltage programming signals VSEL and LLC are implemented via the I2C bus. IO = 450mA. 5. Guaranteed by Design. 6. Unused DSQIN pin should be connected to GND. SEL18V pins is internally connected to GND by a 200K resistor. Electrical Specifications VCC = 12V, TA = -20°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C. EN = H, LLC = L, ENT = L, DCL = L, DSQIN = L, IOUT = 12mA, unless otherwise noted. See software description section for I2C access to the system. (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS ISL6425 |
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