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MC33063AQDRJR Datasheet(PDF) 3 Page - Texas Instruments |
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MC33063AQDRJR Datasheet(HTML) 3 Page - Texas Instruments |
3 / 14 page SLLS654A – APRIL 2005 – REVISED JANUARY 2007 MC33063AQ1 1.5A PEAK BOOST/BUCK/INVERTING SWITCHING REGULATOR 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions MIN MAX UNIT VCC Supply voltage 3 40 V TA Operating free-air temperature range MC33063A −40 125 °C electrical characteristics, VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram) OSCILLATOR PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT fosc Oscillator frequency VPIN5 = 0 V, CT = 1 nF 25 °C 24 33 42 kHz Ichg Charge current VCC = 5 V to 40 V 25 °C 24 35 42 µA Idischg Discharge current VCC = 5 V to 40 V 25 °C 140 220 260 µA Idischg/Ichg Discharge-to-charge current ratio VPIN7 = VCC 25 °C 5.2 6.5 7.5 VIpk Current-limit sense voltage Idischg = Ichg 25 °C 250 300 350 mV OUTPUT SWITCH (see Note 3) PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT VCE(sat) Saturation voltage – Darlington connection ISW = 1 A, pins 1 and 8 connected Full range 1 1.3 V VCE(sat) Saturation voltage – non-Darlington connection (see Note 4) ISW = 1 A, RPIN8 = 82 Ω to VCC, forced b 20 Full range 0.45 0.7 V hFE DC current gain ISW = 1 A, VCE = 5 V 25 °C 50 75 IC(off) Collector off-state current VCE = 40 V Full range 0.01 100 µA NOTES: 3. Low duty-cycle pulse testing is used to maintain junction temperature as close to ambient temperature as possible. 4. In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents ( ≤300 mA) and high driver currents ( ≥30 mA), it may take up to 2 µs for the switch to come out of saturation. This condition effectively shortens the off time at frequencies ≥30 kHz, becoming magnified as temperature increases. The following output drive condition is recommended in the non-Darlington configuration: Forced b of output switch = IC,SW / (IC,driver − 7 mA) ≥ 10, where 7 mA is required by the 100-Ω resistor in the emitter of the driver to forward bias the Vbe of the switch. COMPARATOR PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT Vth Threshold voltage 25 °C 1.225 1.25 1.275 V Vth Threshold voltage Full range 1.21 1.29 V ∆Vth Threshold-voltage line regulation VCC = 5 V to 40 V Full range 1.4 5 mV IIB Input bias current VIN = 0 V Full range −20 −400 nA TOTAL DEVICE PARAMETER TEST CONDITIONS TA MIN MAX UNIT ICC Supply current VCC = 5 V to 40 V, CT = 1 nF, VPIN7 = VCC, VPIN5 > Vth, VPIN2 = GND, all other pins open Full range 4 mA |
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