Datasheet LT1070, LT1071 (Linear Technology) - 2

LT1070/LT1071
W W W U ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage Operating Junction Temperature Range LT1070/LT1071 (Note 2) .. 40V Commercial (Operating) ... 0°C to 100°C LT1070HV/LT1071HV (Note 2) .. 60V Commercial (Short Circuit)... 0°C to 125°C Switch Output Voltage Industrial ... – 40°C to 125°C LT1070/LT1071 .. 65V Military
(OBSOLETE) ...
– 55°C to 150°C LT1070HV/LT1071HV .. 75V Storage Temperature Range .. – 65°C to 150°C Feedback Pin Voltage (Transient, 1ms) .. ±15V Lead Temperature (Soldering, 10 sec)... 300°C
U W U PACKAGE/ORDER INFORMATION
BOTTOM VIEW ORDER PART ORDER PART VSW VC NUMBER NUMBER FRONT VIEW 1 LT1070CK LT1070CT 2 5 V CASE LT1070HVCK IN LT1070HVCT 3 IS GND 4 VSW 4 LT1070HVMK LT1070HVIT 3 GND LT1070IK 2 FB LT1070IT VIN FB LT1070MK 1 VC LT1071CT K PACKAGE 4-LEAD TO-3 METAL CAN LT1071CK T PACKAGE LT1071HVCT 5-LEAD PLASTIC TO-220 TJMAX = 100°C, θJA = 35°C/ W, QJC = 2°C (LT1070C, I) LT1071HVCK LT1071HVIT TJMAX = 150°C, θJA = 35°C/ W, QJC = 2°C (LT1070M) TJMAX = 100°C, θJA = 75°C/ W, QJC = 2°C (LT1070C, I) TJMAX = 100°C, θJA = 35°C/ W, QJC = 4°C (LT1071C, I) LT1071HVMK TJMAX = 100°C, θJA = 75°C/ W, QJC = 4°C (LT1071C) LT1071IT TJMAX = 150°C, θJA = 35°C/ W, QJC = 4°C (LT1071M) LT1071MK
OBSOLETE PACKAGE
Consider the T5 Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VC = 0.5V, VFB = VREF, output pin open unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VREF Reference Voltage Measured at Feedback Pin, VC = 0.8V 1.224 1.244 1.264 V ● 1.214 1.244 1.274 V IB Feedback Input Current VFB = VREF 350 750 nA ● 1100 nA gm Error Amplifier Transconductance ∆IC = ±25µA 3000 4400 6000 µmho ● 2400 7000 µmho Error Amplifier Source or Sink Current VC = 1.5V 150 200 350 µA ● 120 400 µA Error Amplifier Clamp Voltage Hi Clamp, VFB = 1V 1.80 2.30 V Lo Clamp, VFB = 1.5V 0.25 0.38 0.52 V Reference Voltage Line Regulation 3V ≤ VIN ≤ VMAX, VC = 0.8V ● 0.03 %/V AV Error Amplifier Voltage Gain 0.9V ≤ VC ≤ 1.4V 500 800 V/V Minimum Input Voltage ● 2.6 3.0 V IQ Supply Current 3V ≤ VIN ≤ VMAX, VC = 0.6V 6 9 mA Control Pin Threshold Duty Cycle = 0 0.8 0.9 1.08 V ● 0.6 1.25 V Normal/Flyback Threshold on Feedback Pin 0.4 0.45 0.54 V 10701fe 2