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L5994 Datasheet(PDF) 4 Page - STMicroelectronics |
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L5994 Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 8 page ELECTRICAL CHARACTERISTICS (VIN = 12V; TJ =25 °C; VOSC = GND; unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit DC CHARACTERISTICS VIN Input Supply Voltage 5.0 25 V I2 Operating Quiescent Current R1GATE = R2GATE = OPEN H1GATE = H2GATE = OPEN RUN2 = RUN1 = SREG5 (DRIVERS OFF ) 1.35 mA I2 Stand-By Current RUN2= RUN1 = GND VIN = 12V VIN = 20V 50 60 100 120 µA SECTION 1 PWM CONTROLLER V1OUT (*) V1SNS Feedback Voltage VIN = 5.0 to 20V; VI1SNS -VV1SNS = 0 to 40mV 1.843 1.9 1.957 V V6 -V5 Over-Current Threshold Voltage VSOFT1 = 4V 50 mV V6 -V5 Pulse Skipping Mode Thereshold Voltage VIN > 6.8V 13 mV VIN < 5.8V 6.5 mV V5 Over Voltage Threshold ON V1SNS 1.99 2.052 2.11 V Under Voltage Threshold ON V1SNS 1.695 1.748 1.80 V SECTION 2 PWM CONTROLLER V2OUT (*) V2SNS Feedback Voltage VIN = 5.0 to 20V; VI2SNS -VV2SNS = 0 to 40mV 1.610 1.66 1.709 V V19 -V20 Over Current Threshold Voltage VSOFT2 = 4V 50 mV V19 -V20 Pulse Skipping Mode Threshold Voltage VIN = 5.0 to 20V; 13 mV V20 Over Voltage Threshold ON V2SNS 1.738 1.792 1.845 V Under Voltage Threshold ON V2SNS 1.48 1.527 1.572 V PWM CONTROLLERS CHARACTERISTICS (BOTH SECTIONS) FOSC Switching Frequency Accuracy OSC = SREG5/2 255 300 345 kHz OSC = 0 or SREG5 170 200 230 kHz V15 Voltage Range for 300kHz Operation 2.4 2.6 V TOFF Dead Time 300 375 450 ns TOV Overvoltage Propagation Time V1SNS to PWROK or V2SNS to PWROK 1.25 µs TUV Undervoltage Propagation Time V1SNS to PWROK or V2SNS to PWROK 1.5 µs V5,V20 Output UVLO Threshold Respect output voltage 70 % I8,I17 Soft Start Charge Current 3.2 4 4.8 µA V8,V17 Soft Start Clamp Voltage 4 V (*) Guaranteed by design, not tested in production L5994 4/8 |
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