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UC2846 Fiches technique(PDF) 3 Page - Texas Instruments |
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UC2846 Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 8 page UC1846/UC1847 UC3846/UC3847 PARAMETER TEST CONDITIONS UC2846/UC2847 MIN. TYP. MAX. MIN. TYP. MAX. UNITS Oscillator Section Initial Accuracy TJ=25°C 394347394347 kHz Voltage Stability VIN=8V to 40V -1 2 -1 2 % Temperature Stability Over Operating Range (Note 2) -1 -1 % Sync Output High Level 3.9 4.35 3.9 4.35 V Sync Output Low Level 2.3 2.5 2.3 2.5 V Sync Input High Level Pin 8=0V 3.9 3.9 V Sync Input Low Level Pin 8=0V 2.5 2.5 V Sync Input Current Sync Voltage=3.9V, Pin 8=0V 1.3 1.5 1.3 1.5 mA Error Amp Section Input Offset Voltage 0.5 5 0.5 10 mV Input Bias Current -0.6 -1 -0.6 -2 µA Input Offset Current 40 250 40 250 nA Common Mode Range VIN=8V to 40V 0 VIN-2V 0 VIN-2V V Open Loop Voltage Gain ∆VO=1.2 to 3V, VCM=2V 80 105 80 105 dB Unity Gain Bandwidth TJ=25°C (Note 2) 0.7 1.0 0.7 1.0 MHz CMRR VCM=0V to 38V, VIN=40V 75 100 75 100 dB PSRR VIN=8V to 40V 80 105 80 105 dB Output Sink Current VID=-15mV to -5V, VPIN 7=1.2V 2 6 2 6 mA Output Source Current VID=15mV to 5V, VPIN 7=2.5V -0.4 -0.5 -0.4 -0.5 mA High Level Output Voltage RL=(Pin 7) 15k Ω 4.3 4.6 4.3 4.6 V Low Level Output Voltage 0.7 1 0.7 1 V Current Sense Amplifier Section Amplifier Gain VPIN 3=0V, Pin 1 Open (Notes 3 & 4) 2.5 2.75 3.0 2.5 2.75 3.0 V Maximum Differential Input Pin 1 Open (Note 3) Signal (VPIN 4-VPIN 3)RL (Pin 7)=15kW 1.1 1.2 1.1 1.2 V Input Offset Voltage VPIN 1=0.5V, Pin 7 Open (Note 3) 5 25 5 25 mV CMRR VCM=1V to 12V 6083 6083 dB PSRR VIN=8V to 40V 6084 6084 dB Input Bias Current VPIN 1=0.5V, Pin 7 Open (Note 3) -2.5 -10 -2.5 -10 µA Input Offset Current VPIN 1=0.5V, Pin 7 Open (Note 3) 0.08 1 0.08 1 µA Input Common Mode Range 0 VIN-3 0 VIN-3 V Delay to Outputs TJ=25°C, (Note 2) 200 500 200 500 ns Current Limit Adjust Section Current Limit Offset VPIN 3=0V, VPIN 4=0V, Pin 7 Open (Note 3) 0.45 0.5 0.55 0.45 0.5 0.55 V Input Bias Current VPIN 5=VREF, VPIN 6=0V -10 -30 -10 -30 µA Shutdown Terminal Section Threshold Voltage 250 350 400 250 350 400 mV Input Voltage Range 0 VIN 0VIN V Minimum Latching Current (Note 6) (IPIN 1) 3.0 1.5 3.0 1.5 mA ELECTRICAL CHARACTERISTICS (cont.) (Unless otherwise stated, these specifications apply for TA=-55°C to +125°C for UC1846/7; -40°C to +85°C for the UC2846/7; and 0°C to +70°C for the UC3846/7; VIN=15V, RT=10k, CT=4.7nF, TA=TJ.) UC1846/7 UC2846/7 UC3846/7 3 |
Numéro de pièce similaire - UC2846 |
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Description similaire - UC2846 |
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