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LM3402 Datasheet(PDF) 4 Page - Texas Instruments |
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LM3402 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 36 page LM3402, LM3402HV SNVS450D – SEPTEMBER 2006 – REVISED FEBRUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS LM3402 VIN = 24V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA = TJ = +25°C. (1) Limits appearing in boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are ensured by design, test, or statistical analysis. Symbol Parameter Conditions Min Typ Max Units SYSTEM PARAMETERS tON-1 On-time 1 VIN = 10V, RON = 200 kΩ 2.1 2.75 3.4 µs tON-2 On-time 2 VIN = 40V, RON = 200 kΩ 490 650 810 ns (1) Typical specifications represent the most likely parametric norm at 25°C operation. ELECTRICAL CHARACTERISTICS LM3402HV Symbol Parameter Conditions Min Typ Max Units SYSTEM PARAMETERS tON-1 On-time 1 VIN = 10V, RON = 200 kΩ 2.1 2.75 3.4 µs tON-2 On-time 2 VIN = 70V, RON = 200 kΩ 290 380 470 ns ELECTRICAL CHARACTERISTICS LM3402/LM3402HV Symbol Parameter Conditions Min Typ Max Units REGULATION AND OVER-VOLTAGE COMPARATORS VREF-REG CS Regulation Threshold CS Decreasing, SW turns on 194 200 206 mV VREF-0V CS Over-voltage Threshold CS Increasing, SW turns off 300 mV ICS CS Bias Current CS = 0V 0.1 µA SHUTDOWN VSD-TH Shutdown Threshold RON / SD Increasing 0.3 0.7 1.05 V VSD-HYS Shutdown Hysteresis RON / SD Decreasing 40 mV OFF TIMER tOFF-MIN Minimum Off-time CS = 0V 300 ns INTERNAL REGULATOR VCC-REG VCC Regulated Output 6.6 7 7.4 V VIN-DO VIN - VCC Dropout ICC = 5 mA, 6.0V < VIN < 8.0V 300 mV VCC-BP-TH VCC Bypass Threshold VIN Increasing 8.8 V VCC-BP-HYS VCC Bypass Hysteresis VIN Decreasing 225 mV VCC-Z-6 VCC Output Impedance VIN = 6V 55 Ω (0 mA < ICC < 5 mA) VCC-Z-8 VIN = 8V 50 VCC-Z-24 VIN = 24V 0.4 VCC-LIM VCC Current Limit (Note 3) VIN = 24V, VCC = 0V 16 mA VCC-UV-TH VCC Under-voltage Lock-out Threshold VCC Increasing 5.25 V VCC-UV-HYS VCC Under-voltage Lock-out Hysteresis VCC Decreasing 150 mV VCC-UV-DLY VCC Under-voltage Lock-out Filter Delay 100 mV Overdrive 3 µs IIN-OP IIN Operating Current Non-switching, CS = 0V 600 900 µA IIN-SD IIN Shutdown Current RON / SD = 0V 90 180 µA CURRENT LIMIT ILIM Current Limit Threshold 530 735 940 mA DIM COMPARATOR VIH Logic High DIM Increasing 2.2 V VIL Logic Low DIM Decreasing 0.8 V IDIM-PU DIM Pull-up Current DIM = 1.5V 75 µA N-MOSFET AND DRIVER RDS-ON Buck Switch On Resistance ISW = 200mA, BOOT-SW = 6.3V 0.7 1.5 Ω VDR-UVLO BOOT Under-voltage Lock-out Threshold BOOT–SW Increasing 1.7 3 4 V 4 Submit Documentation Feedback Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Links: LM3402 LM3402HV |
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