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UC3526M Datasheet(PDF) 3 Page - Texas Instruments |
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UC3526M Datasheet(HTML) 3 Page - Texas Instruments |
3 / 12 page PARAMETER TEST CONDITIONS UC1526A / UC2526A UC3526A UNITS MIN TYP MAX MIN TYP MAX Reference Section (Note 4) Output Voltage TJ = +25°C 4.95 5.00 5.05 4.90 5.00 5.10 V Line Regulation +VIN = 7 to 35V 2 10 2 15 mV Load Regulation IL = 0 to 20mA 5 20 5 20 mV Temperature Stability Over Operating TJ (Note 5) 15 50 15 50 mV Total Output Voltage Range Over Recommended Operating Conditions 4.90 5.00 5.10 4.85 5.00 5.15 V Short Circuit Current VREF = 0V 25 50 100 25 50 100 mA Under-Voltage Lockout RESET Output Voltage VREF = 3.8V 0.2 0.4 0.2 0.4 V VREF = 4.7V 2.4 4.7 2.4 4.8 V Oscillator Section (Note 6) Initial Accuracy TJ = +25°C ±3 ±8 ±3 ±8% Voltage Stability +VIN = 7 to 35V 0.5 1 0.5 1 % Temperature Stability Over Operating TJ (Note 5) 26 13 % Minimum Frequency RT = 150k Ω, CT = 20µF (Note 5) 1 1 Hz Maximum Frequency RT = 2k Ω, CT = 470pF 550 650 kHz Sawtooth Peak Voltage +VIN = 35V 3.0 3.5 3.0 3.5 V Sawtooth Valley Voltage +VIN =7V 0.5 1.0 0.5 1.0 V SYNC Pulse Width TJ = 25°C, RL = 2.7k Ω to VREF 1.1 1.1 µs Error Amplifier Section (Note 7) Input Offset Voltage RS ≤ 2kΩ 25 2 10 mV Input Bias Current -350 -1000 -350 -2000 nA Input Offset Current 35 100 35 200 nA DC Open Loop Gain RL ≥ 10MΩ 64 72 60 72 dB HIGH Output Voltage VPIN 1 - VPIN 2 ≥ 150mV, ISOURCE = 100µA 3.6 4.2 3.6 4.2 V LOW Output Voltage VPIN 2 - VPIN 1 ≥ 150mV, ISINK = 100µA 0.2 0.4 0.2 0.4 V Common Mode Rejection RS ≤ 2kΩ 70 94 70 94 dB Supply Voltage Rejection +VIN = 12 to 18V 66 80 66 80 dB PWM Comparator (Note 6) Minimum Duty Cycle VCOMPENSATION = +0.4V 0 0 % Maximum Duty Cycle VCOMPENSATION = +3.6V 45 49 45 49 % Digital Ports (SYNC, SHUTDOWN, and RESET) HIGH Output Voltage ISOURCE = 40 µA 2.4 4.0 2.4 4.0 V LOW Output Voltage ISINK = 3.6mA 0.2 0.4 0.2 0.4 V HIGH Input Current VIH = +2.4V -125 -200 -125 -200 µA LOW Input Current VIL = +0.4V -225 -360 -225 -360 µA Shutdown Delay From Pin 8, TJ = 25°C 160 160 ns Current Limit Comparator (Note 8) Sense Voltage RS ≤ 50Ω 90 100 110 80 100 120 mV Input Bias Current -3 -10 -3 -10 µA Shutdown Delay From pin 7, 100mV Overdrive, TJ = 25°C 260 260 ns +VIN = 15V, and over operating ambient temperature, unless otherwise specified TA = TJ. ELECTRICAL CHARACTERISTICS: Note 4: IL = 0mA. Note 5: Guaranteed by design, not 100% tested in production. Note 6: FOSC = 40kHz, (RT = 4.12k Ω ± 1%, CT = 0.01µF± 1%, RD = 0 Ω). Note 7: VCM = 0 to +5.2V Note 8: VCM = 0 to +12V. Note 9: VC = +15V. Note 10:VIN = +35V, RT = 4.12k Ω. UC1526A UC2526A UC3526A 3 |
Similar Part No. - UC3526M |
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Similar Description - UC3526M |
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