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LT1432 Datasheet(PDF) 2 Page - Linear Technology |
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LT1432 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 28 page  2 LT1432 VIN Pin .................................................................... 30V V + Pin ..................................................................... 40V VC ........................................................................... 35V VLIM and VOUT Pins................................................... 7V Diode Pin Voltage ................................................... 30V Mode Pin Current (Note 2) ..................................... 1mA Operating Temperature Range .................... 0 °C to 70°C Storage Temperature Range ................ –65 °C to 150°C Lead Temperature (Soldering, 10 sec.)................ 300 °C A G A U A R BSOLUTEXI TI S PACKAGE/ORDER I FOR ATIO ORDER PART NUMBER LT1432CN8 LT1432CS8 ELECTRICAL C C HARA TERISTICS VC = 6V, VIN = 12V, V + = 10V, V DIODE = Open, VLIM = VOUT, VMODE = 0V, TJ = 25°C Device is in standard test loop unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Regulated Output Voltage VC Current = 220µA q 4.9 5.0 5.1 V Output Voltage Line Regulation VIN = 6V to 30V q 520 mV Input Supply Current (Note 1) VIN = 6V to 30V, V + = V IN + 5V, VC = VIN + 1V q 0.3 0.5 mA Quiescent Output Load Current 0.9 1.2 mA Mode Pin Current VMODE = 0V (current is out of pin) q 30 50 µA VMODE = 5V (shutdown) q 15 30 µA Mode Pin Threshold Voltage IMODE = 10µA (out of pin) q 0.6 0.9 1.5 V (Normal to Burst) VC Pin Saturation Voltage VOUT = 5.5V (forced) q 0.25 0.45 V VC Pin Maximum Sink Current VOUT = 5.5V (forced) q 0.45 0.8 1.5 mA VC Pin Source Current VOUT = 4.5V (forced) q 40 60 100 µA Current Limit Sense Voltage (Note 3) Device in Current Limit Loop 56 60 64 mV VLIM Pin Current Device in Current Limit Loop q 30 45 70 µA (current is out of pin) Supply Current in Shutdown VMODE > 3V, VIN < 30V, VC and V + = 0V q 15 60 µA Burst Mode Output Ripple Device in Burst Test Circuit 100 mVp-p Burst Mode Average Output Voltage Device in Burst Test Circuit q 4.8 5 5.2 V Clamp Diode Forward Voltage IF = 1mA, All Other Pins Open q 0.5 0.65 V Startup Drive Current VOUT = 2.5V (forced), V + = 5V to 25V, q 30 45 mA VIN = 6V to 26V, V + = V IN – 1V, VC = VIN – 1.5V Restart Time Delay (Note 4) 1 1.8 10 ms Transconductance, Output to VC Pin IC = 150µA to 250µA q 1500 2000 2800 µmho The q denotes specifications which apply over the operating temperature range. Note 1: Does not include current drawn by the LT1070 IC. See operating parameters in standard circuit. Note 2: Breakdown voltage on the mode pin is 7V. External current must be limited to value shown. Note 3: Current limit sense voltage temperature coefficient is +0.33%/ °C to match TC of copper trace material. Note 4: VOUT pin switched from 5.5Vto 4.5V. 1 2 3 4 TOP VIEW VLIM VOUT VIN V+ MODE GND VC DIODE N8 PACKAGE 8-LEAD PLASTIC DIP S8 PACKAGE 8-LEAD PLASTIC SO 8 7 6 5 |
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