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UCC1810 Datasheet(PDF) 3 Page - Texas Instruments |
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UCC1810 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 8 page 3 UCC1810 UCC2810 UCC3810 ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications apply for –55°C ≤ TA ≤ 125°C for UCC1810; –40 °C ≤ TA ≤ 85°C for UCC2810; 0°C ≤ TA ≤ 70°C for UCC3810; VCC = 10V (Note 4); RT = 150k; CT = 120pF; No Load; TA = TJ. All parameters are the same for both channels. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS Current Sense Section Gain (Note 6) 1.20 1.55 1.80 V/V Maximum Input Signal COMP = 5V (Note 7) 0.9 1.0 1.1 V CS Input Bias Current ± 200 nA CS to OUT Propagation Delay CS steps from 0V to 1.2V, COMP = 2.5V 75 ns CS Blank Time (Note 8) 55 ns CS Overcurrent Threshold 1.35 1.55 1.85 V COMP to CS Offset CS = 0V 0.65 0.95 1.4 V PWM Section Maximum Duty Cycle RT = 150k, CT = 120pF (Note 10) 45 49 50 % Maximum Duty Cycle RT = 30k, CT = 120pF (Note 10) 40 45 48 % Minimum On Time CS =1.2V, COMP = 5V 130 ns Output Section OUT Low Level IOUT = 20mA 0.12 0.42 V IOUT = 200mA 0.48 1.10 V IOUT = 20mA, VCC = 0V 0.7 1.20 V OUT High Level (VCC - OUT) IOUT = –20mA 0.15 0.42 V IOUT = –200mA 1.20 2.30 V OUT Rise Time COUT = 1nF 20 50 ns OUT Fall Time COUT = 1nF 30 60 ns Undervoltage Lockout Section Start Threshold 9.9 11.3 13.2 V Stop Threshold 7.5 8.3 9.5 V Start to Stop Hysteresis 1.7 3.0 4.7 V ENABLE2 Input Bias Current ENABLE2 = 0V –20 –35 –55 µA ENABLE2 Input Threshold Voltage 0.80 1.53 2.00 V Overall Section Startup Current VCC < Start Threshold Voltage 0.15 0.25 mA Operating Supply Current, Outputs Off VCC = 10V, FB = 2.75V 2.0 3.0 mA Operating Supply Current, Outputs On VCC = 10V, FB = 0V, CS = 0V, RT = 150k 3.2 5.1 mA Operating Supply Current, Outputs On VCC = 10V, FB = 0V, CS = 0V, RT = 30k 8.5 14.5 mA VCC Internal Zener Voltage ICC = 10mA (Note 9) 11.0 12.9 14.0 V VCC Internal Zener Voltage Minus Start Threshold Voltage 0.4 1.2 V Note 4: Adjust VCC above the start threshold before setting at 10V. Note 5: Oscillator frequency is twice the output frequency. F RT CT OSC ≈ × 4 Note 6: Current Sense Gain A is defined by: A VCOMP VCS VCS V =≤ ≤ ∆ ∆ 00 8 . . Note 7: Parameter measured at trip point of latch with FB = 0V. Note 8: CS Blank Time is measured as the difference between the minimum non-zero on-time and the CS to OUT delay. Note 9: Start Threshold Voltage and VCC Internal Zener Voltage track each other. Note 10: Guaranteed by design. Not 100% tested in production. |
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Similar Description - UCC1810 |
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