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LT1512C Datasheet(PDF) 2 Page - Linear Technology |
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LT1512C Datasheet(HTML) 2 Page - Linear Technology |
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2 / 12 page  2 LT1512 A G A U A R BSOLUTEXI TI S PACKAGE/ORDER I FOR ATIO SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VREF VFB Reference Voltage Measured at FB Pin 1.233 1.245 1.257 V VC = 0.8V q 1.228 1.245 1.262 V FB Input Current VFB = VREF 300 550 nA q 600 nA FB Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 25V, VC = 0.8V q 0.01 0.03 %/V VIREF IFB Reference Voltage Measured at IFB Pin – 107 – 100 – 93 mV VFB = 0V, VC = 0.8V q –110 – 100 – 90 mV IFB Input Current VIFB = VIREF (Note 2) q 10 25 35 µA IFB Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 25V, VC = 0.8V q 0.01 0.05 %/V gm Error Amplifier Transconductance ∆IC = ±25µA 1100 1500 1900 µmho q 700 2300 µmho Error Amplifier Source Current VFB = VREF – 150mV, VC = 1.5V q 120 200 350 µA Error Amplifier Sink Current VFB = VREF + 150mV, VC = 1.5V q 1400 2400 µA Error Amplifier Clamp Voltage High Clamp, VFB = 1V 1.70 1.95 2.30 V Low Clamp, VFB = 1.5V 0.25 0.40 0.52 V AV Error Amplifier Voltage Gain 500 V/ V VC Pin Threshold Duty Cycle = 0% 0.8 1 1.25 V f Switching Frequency 2.7V ≤ VIN ≤ 25V 450 500 550 kHz 0 °C ≤ TJ ≤ 125°C q 430 500 580 kHz –40 °C ≤ TJ < 0°C (LT1512I) 400 580 kHz Maximum Switch Duty Cycle q 88 95 % Switch Current Limit Blanking Time 130 260 ns BV Output Switch Breakdown Voltage 0 °C ≤ TJ ≤ 125°C q 40 47 V –40 °C ≤ TJ < 20°C (LT1512I) 35 V VIN = 5V, VC = 0.6V, VFB = VREF, IFB = 0V, VSW and S/S pins open, unless otherwise noted. ELECTRICAL C C HARA TERISTICS Input Voltage .......................................................... 30V Switch Voltage ........................................................ 40V S/S Pin Voltage ....................................................... 30V FB Pin Voltage (Transient, 10ms) ......................... ±10V VFB Pin Current .................................................... 10mA IFB Pin Voltage (Transient, 10ms) ......................... ±10V Storage Temperature Range ................ – 65 °C to 150°C Ambient Temperature Range LT1512C (Note 3) .................................... 0 °C to 70°C LT1512I .............................................. – 40 °C to 85°C Operating Junction Temperature Range LT1512C (Note 3) ............................ – 20 °C to 125°C LT1512I ............................................ – 40 °C to 125°C Short Circuit ......................................... 0 °C to 150°C Lead Temperature (Soldering, 10 sec) ................. 300 °C ORDER PART NUMBER TJMAX = 125°C, θJA = 100°C/ W (N) TJMAX = 125°C, θJA = 130°C/ W (S) Consult factory for Military grade parts. 1 2 3 4 8 7 6 5 TOP VIEW VC FB IFB S/S VSW GND GND S VIN N8 PACKAGE 8-LEAD PDIP S8 PACKAGE 8-LEAD PLASTIC SO S8 PART MARKING 1512 1512I LT1512CN8 LT1512CS8 LT1512IN8 LT1512IS8 NOTE: CONTACT FACTORY CONCERNING 16-LEAD FUSED-LEAD GN PACKAGE WITH LOWER THERMAL RESISTANCE |
Similar Part No. - LT1512C |
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Similar Description - LT1512C |
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