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LM3501TLX-16 Datenblatt(PDF) 5 Page - National Semiconductor (TI) |
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LM3501TLX-16 Datenblatt(HTML) 5 Page - National Semiconductor (TI) |
5 / 18 page Electrical Characteristics (Continued) Specifications in standard type face are for T J = 25˚C and those in boldface type apply over the full Operating Temperature Range (T J = −40˚C to +125˚C). Unless otherwise specified VIN =2.7V and specifications apply to both LM3501-16 and LM3501-21. Symbol Parameter Conditions Min (Note 6) Typ (Note 7) Max (Note 6) Units R DSON NMOS Switch R DSON V IN = 2.7V, ISW = 300 mA 0.43 Ω PMOS Switch R DSON V OUT = 6V, ISW = 300 mA 1.3 2.3 D Limit Duty Cycle Limit (LM3501-16) FB=0V 87 % Duty Cycle Limit (LM3501-21) FB=0V 94 F SW Switching Frequency 0.8 1.0 1.2 MHz I SD SHDN Pin Current (Note 9) SHDN = 5.5V 1.8 4 µA SHDN = 2.7V 1 2.5 SHDN = GND 0.1 I CNTRL CNTRL Pin Current (Note 9) V CNTRL = 2.7V 10 20 µA V CNTRL =1V 4 15 I L Switch Leakage Current (LM3501-16) V SW = 15V 0.01 0.5 µA Switch Leakage Current (LM3501-21) V SW = 20V 0.01 2.0 UVP Input Undervoltage Lockout ON Threshold 2.4 2.5 2.6 V OFF Threshold 2.3 2.4 2.5 OVP Output Overvoltage Protection (LM3501-16) ON Threshold 15 15.5 16 V OFF Threshold 14 14.6 15 Output Overvoltage Protection (LM3501-21) ON Threshold 20 20.5 21 OFF Threshold 19 19.5 20 I Vout V OUT Leakage Current (LM3501-16) V OUT = 15V, SHDN = 1.5V 260 400 µA V OUT Leakage Current (LM3501-21) V OUT = 20V, SHDN = 1.5V 300 460 I VL PMOS Switch Leakage Current (LM3501-16) V OUT = 15V, VSW =0V 0.01 3 µA PMOS Switch Leakage Current (LM3501-21) V OUT = 20V, VSW =0V 0.01 3 CNTRL Threshold LED power off 75 mV LED power on 125 SHDN Threshold SHDN low 0.65 0.3 V SHDN High 1.1 0.65 Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2: This condition applies if VIN < VOUT.IfVIN > VOUT, a voltage greater than VIN + 0.3V should not be applied to the VOUT or VSW pins. Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin. Note 4: The maximum allowable power dissipation is a function of the maximum operating junction temperature, TJ(MAX), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. See the Thermal Properties section for the thermal resistance. The maximum allowable power dissipation at any ambient temperature is calculated using: PD (MAX) = (TJ(MAX) −TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature. Note 5: Junction-to-ambient thermal resistance ( θJA) is highly application and board-layout dependent. The 75oC/W figure provided was measured on a 4-layer test board conforming to JEDEC standards. In applications where high maximum power dissipation exists, special care must be paid to thermal dissipation issues when designing the board layout. Note 6: All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are production tested, guaranteed through statistical analysis or guaranteed by design. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Note 7: Typical numbers are at 25˚C and represent the most likely norm. Note 8: Feedback current flows out of the pin. Note 9: Current flows into the pin. www.national.com 5 |
Ähnliche Teilenummer - LM3501TLX-16 |
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Ähnliche Beschreibung - LM3501TLX-16 |
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