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LT3433 Datasheet(PDF) 2 Page - Linear Technology |
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LT3433 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 16 page  2 LT3433 3433f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Operating Voltage Range q 460 V VIN(UVLO) Undervoltage Lockout Enable Threshold q 3.4 3.95 V Undervoltage Lockout Hysteresis 160 mV VOUT Operating Voltage Range q 3.3 20 V VBST Operating Voltage Range VBST < VSW_H + 20V q 75 V VBST – VSW_H q 3.3 20 V IVIN Normal Operation (Notes 2, 3) q 580 940 µA Burst Mode Operation VVC < 0.6V q 100 190 µA Shutdown VSHDN < 0.4V q 10 25 µA VBIAS Internal Supply Output Voltage q 2.6 2.9 V Operating Voltage Range q 20 V IVBIAS Normal Operation q 660 990 µA Burst Mode Operation VVC < 0.6V 0.1 µA Shutdown VSHDN < 0.4V 0.1 µA Short-Circuit Current Limit 4.5 mA RSWH(ON) Boost Supply Switch On-Resistance ISW = 500mA q 0.8 1.2 Ω RSWL(ON) Output Supply Switch On-Resistance ISW = 500mA q 0.6 1 Ω VSHDN Shutdown Pin Thresholds Disable q 0.4 V Enable q 1V IVBST/ISW Boost Supply Switch Drive Current High Side Switch On, ISW = 500mA q 30 50 mA/A IVOUT/ISW Output Supply Switch Drive Current Low Side Switch On, ISW = 500mA q 30 50 mA/A ILIM Switch Current Limit q 0.5 0.7 0.9 A Foldback Current Limit VFB = 0V 0.35 A ISS Soft-Start Output Current q 359 µA (Note 1) Input Supply (VIN) .................................... –0.3V to 60V Boosted Supply (VBST) .............. –0.3V to VSW_H + 30V (VBST(MAX) = 80V) Internal Supply (VBIAS) ............................. – 0.3V to 30V SW_H Switch Voltage .................................. – 2V to 60V SW_L Switch Voltage ............................... – 0.3V to 30V Feedback Voltage (VFB) ............................... – 0.3V to 5V Burst Enable Pin (VBURST_EN) ................... – 0.3V to 30V Shutdown Pin (VSHDN) ............................. – 0.3V to 60V Operating Junction Temperature Range (Note 5) LT3433E (Note 6) ............................ – 40 °C to 125°C LT3433I ........................................... – 40 °C to 125°C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION ORDER PART NUMBER LT3433EFE LT3433IFE FE PART MARKING 3433EFE 3433IFE TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) MUST BE SOLDERED TO SGND The q denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 13.8V, VFB = 1.25V, VOUT = 5V, VBURST_EN = 0V, VBST – VIN = 5V, unless otherwise noted. Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS FE PACKAGE 16-LEAD PLASTIC TSSOP 1 2 3 4 5 6 7 8 TOP VIEW 16 15 14 13 12 11 10 9 SGND VBST SW_H VIN BURST_EN VC VFB SGND SGND SW_L PWRGND VOUT VBIAS SHDN SS SGND 17 |
Similar Part No. - LT3433_1 |
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Similar Description - LT3433_1 |
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