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TC1142 Datasheet(PDF) 2 Page - Microchip Technology |
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TC1142 Datasheet(HTML) 2 Page - Microchip Technology |
2 / 12 page TC1142 DS21360B-page 2 2002 Microchip Technology Inc. 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings* Supply Voltage (VIN) with COUT Connected ..........6.5V CCLK Voltage................................-0.3V to (V+ + 0.3V) Power Dissipation.............................................320mW Operating Temperature Range 8-Pin MSOP ................................. -40°C to +85°C Storage Temperature Range ..............-65°C to +160°C *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. TC1142 ELECTRICAL SPECIFICATIONS Electrical Characteristics: RL = ∞, VIN = 3.2V, Mode = -2x, C1 = C2 = 0.47µF (Note 1), CCLK = VIH, COUT = 4.7µF, for VR = 3V, VIN = 3.5V, TA = TMIN to TMAX, unless otherwise noted. Symbol Parameter Min Typ Max Units Test Conditions VIN Supply Voltage 2.5 — 5.5 V VOUT Output Voltage -(VR + 0.2) -VR -(VR – 0.2) V IL = 0mA (Note 2) VP-P Output Ripple — 100 — mV IL = 10mA ISUPPLY Supply Current — 200 400 µA ISUPPLY1 — 0.1 1 µACCLK = 0V ROUTCL Closed-Loop Output Resistance — 26 Ω ROUT Open-Loop Output Resistance — 30 — Ω (Note 3) fOSC Internal Oscillator Frequency 150 200 275 kHz fCCLK External Clock Frequency, Typical 3 — 500 kHz (Note 4) PEFF Power Efficiency 70 76 — %IL = 10mA, VR = 5V; (See Equation 3-5) VIH CCLK Input High Threshold 2.2 —— V VIL CCLK Input Low Threshold —— 1.0 V Note 1: Assume C1 and C2 have an ESR of 1 Ω. 2: VR is the voltage output specified in the ordering option. 3: Measured in -1x Mode. For VR = 3V, VIN = 2.5V. 4: CCLK is driven with an external clock. Minimum frequency = 1/2t0 at 50% duty cycle, where t0 is the counter timeout period. |
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