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LT1506CR-3.3SYNC Datasheet(PDF) 2 Page - Linear Technology |
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LT1506CR-3.3SYNC Datasheet(HTML) 2 Page - Linear Technology |
2 / 24 page 2 LT1506 ABSOLUTE MAXIMUM RATINGS Input Voltage .......................................................... 16V BOOST Pin Above Input Voltage ............................. 15V SHDN Pin Voltage ..................................................... 7V FB Pin Voltage (Adjustable Part) ............................ 3.5V FB Pin Current (Adjustable Part) ............................ 1mA Sense Voltage (Fixed 3.3V Part) ............................... 5V SYNC Pin Voltage ..................................................... 7V Operating Junction Temperature Range LT1506C ............................................... 0 °C to 125° C LT1506I ........................................... – 40 °C to 125°C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec) ................. 300 °C ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNITS Feedback Voltage (Adjustable) 2.39 2.42 2.45 V All Conditions q 2.36 2.48 V Sense Voltage (Fixed 3.3V) 3.25 3.3 3.35 V All Conditions q 3.23 3.37 V SENSE Pin Resistance 4 6.6 9.5 k Ω Reference Voltage Line Regulation 4.3V ≤ VIN ≤ 15V 0.01 0.03 %/ V Feedback Input Bias Current q 0.5 2 µA Error Amplifier Voltage Gain (Notes 2, 8) 200 400 Error Amplifier Transconductance ∆I (VC) = ±10µA (Note 8) 1500 2000 2700 µMho q 1000 3100 µMho VC Pin to Switch Current Transconductance 5.3 A/ V Error Amplifier Source Current VFB = 2.1V or VSENSE = 2.9V q 140 225 320 µA Error Amplifier Sink Current VFB = 2.7V or VSENSE = 3.7V q 140 225 320 µA VC Pin Switching Threshold Duty Cycle = 0 0.9 V VC Pin High Clamp 2.1 V Switch Current Limit VC Open, VFB = 2.1V or VSENSE = 2.9V, DC ≤ 50% q 4.5 6 8.5 A Slope Compensation DC = 80% 0.8 A TJ = 25°C, VIN = 5V, VC = 1.5V, Boost = VIN + 5V, switch open, unless otherwise noted. PACKAGE/ORDER INFORMATION ORDER PART NUMBER ORDER PART NUMBER LT1506CR LT1506CR-3.3 LT1506CR-SYNC LT1506CR-3.3 SYNC LT1506IR LT1506IR-3.3 LT1506IR-SYNC LT1506IR-3.3 SYNC TJMAX = 125°C, θJA = 30°C/W WITH PACKAGE SOLDERED TO 0.5 SQUARE INCH COPPER AREA OVER BACKSIDE GROUND PLANE OR INTERNAL POWER PLANE. θJA CAN VARY FROM 20°C/W TO > 40 °C/W DEPENDING ON MOUNTING TECHNIQUES 1506I 506I33 1506 150633 S8 PART MARKING LT1506CS8 LT1506CS8-3.3 LT1506IS8 LT1506IS8-3.3 *Default is the adjustable output voltage device with FB pin and shutdown function. Option -3.3 replaces FB with SENSE pin for fixed 3.3V output applications. -SYNC replaces SHDN with SYNC pin for applications requiring synchronization. Consult factory for Military grade parts. FB OR SENSE* BOOST VIN GND VSW SYNC OR SHDN* VC R PACKAGE 7-LEAD PLASTIC DD PAK FRONT VIEW TAB IS GND 7 6 5 4 3 2 1 1 2 3 4 8 7 6 5 TOP VIEW S8 PACKAGE 8-LEAD PLASTIC SO VIN BOOST GND** VSW SYNC SHDN VC FB OR SENSE* θJA = 80°C/ W **WITH FUSED (GND) GROUND PIN CONNECTED TO GROUND PLANE OR LARGE LANDS (Note 1) |
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