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UC2903 Fiches technique(PDF) 3 Page - Texas Instruments |
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UC2903 Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 8 page ELECTRICAL CHARACTERISTICS: PARAMETERS TEST CONDITIONS UC1903/UC2903 UC3903 UNITS MIN TYP MAX MIN TYP MAX Fault Thresholds (cont.) OV & UV Threshold Hyst. 0.5V ≤ VPIN 4 ≤ 2.5V 10 20 30 10 20 30 mV/V OV & UV Threshold Supply Sensitivity +VIN = 8V to 40V .002 .01 .002 .02 %/V Adjust Pin (Pin 4) Input Bias Current 0.5V ≤ VPIN 4 ≤ 2.5V ±1 ±10 ±1 ±12 µA/V Line Sense Threshold Input = High to Low 1.94 2.0 2.06 1.9 2.0 2.1 V Line Sense Threshold Hyst. 125 175 225 100 175 250 mV Sense Inputs Sense 1-4 Input Bias Current Input = 2.8V (Note 2) 1 3 1 6 µA Input = 2.2 (Note 2) -1 -3 -1 -6 µA Line Sense Input Bias Current Input = 2.3V (Note 2) 1 3 1 6 µA OV and UV Fault Delay Charging Current 60 60 µA Threshold Voltage Delay Pin = Low to High 1.8 1.8 V Threshold Hysteresis TJ = 25°C 250 250 mV Delay Ratio of Threshold Voltage to Charging Current 20 30 50 20 30 50 ms/ µF Fault Outputs (OV, UV, & Power 0K) Maximum Current VOUT = 2V 30 70 30 70 mA Saturation Voltage IOUT = 12mA .25 .40 .25 .40 V Leakage Current VOUT = 40 V 3 25 3 25 µA Sense 4 Inverter (Note 3) Input Offset Voltage 2 8 2 10 mV Input Bias Current .1 2 .1 4 µA Open Loop Gain 65 80 65 80 dB PSRR +VIN = 8 to 40 V 65 100 65 100 dB Unity Gain Frequency 1 1 MHz Slew Rate .4 .4 V/ µs Short Circuit Current TJ = 25°C 40 40 mA G.P. Op-Amp (Note 3) Input Offset Voltage 1 5 1 8 mV Input Bias Voltage .1 2 .1 4 µA Input Offset Current .01 .5 .01 1.0 µA Open Loop Gain 65 120 65 120 dB CMRR VCM = 0 to +VIN = 2.0V 65 100 65 100 dB PSRR +VIN = 8 to 40V 65 100 65 100 dB Unity Gain Frequency 1 1 MHz Slew Rate .4 .4 V/ µs Short Circuit Current TJ = 25°C 40 40 mA Note 2: These currents represent maximum input bias currents required as the sense inputs cross appropriate thresholds. Note 3: When either the G.P. OP-Amp, or the Sense 4 Inverter, are configured for sensing a negative supply voltage, the divider resistance at the inverting input should be chosen such that the nominal divider current is ≤ 1.4mA. With the divider current at or below this level possible latching of the circuit is avoided. Proper operation for currents at or below 1.4mA is 100% tested in production. Note 4: Reference to pin numbers in this specification pertain to 18 pin DIL N and J packages and 18 pin SOIC DW package. UC1903 UC2903 UC3903 Unless otherwise stated, these specifications apply for TA = –55°C to +125°C for the UC1903; –40°C to +85°C for the UC2903; and 0°C to +70°C for the UC3903; +VIN = 15V; Sense Inputs (Pins 6–9 and Pin 15) = 2.5V; VPIN 4 = 1.0V, TA = TJ. 3 |
Numéro de pièce similaire - UC2903 |
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Description similaire - UC2903 |
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