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LT1432-3.3 Datasheet(PDF) 2 Page - Linear Technology |
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LT1432-3.3 Datasheet(HTML) 2 Page - Linear Technology |
2 / 8 page 2 LT1432-3.3 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 TJMAX = 100°C, θJA = 150°C/W (N8) TJMAX = 100°C, θJA = 170°C/W (S8) LT1432CN8-3.3 LT1432CS8-3.3 ORDER PART NUMBER PARAMETER CONDITIONS MIN TYP MAX UNITS Regulated Output Voltage VC Current = 220µA q 3.24 3.30 3.36 V Output Voltage Line Regulation VIN = 4V to 30V q 520 mV Input Supply Current (Note 1) VIN = 4V 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 = 3.3V (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 = 3.6V (Forced) q 0.25 0.45 V VC Pin Maximum Sink Current VOUT = 3.6V (Forced) q 0.45 0.8 1.5 mA VC Pin Source Current VOUT = 3.0V (Forced) q 35 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 15 60 µA Burst Mode Operation Output Ripple Device in Burst Test Circuit 100 mVp-p Burst Mode Operation Average Output Voltage Device in Burst Test Circuit q 3.15 3.30 3.45 V Clamp Diode Forward Voltage IF = 1mA, All Other Pins Open q 0.5 0.65 V Start-up Drive Current VOUT = 1.5V (Forced), VIN = 4V to 26V, q 30 45 mA V+ = VIN – 1V, VC = VIN – 1.5V Restart Time Delay (Note 4) 0.7 1.2 10 ms Transconductance, Output to VC Pin IC = 150µA to 250µA q 2700 3600 5000 µmho VC = 4V, VIN = 4V, V + = 8V, V DIODE = Open, VLIM = VOUT, VMODE = 0V, TJ = 25°C Device is in standard test loop unless otherwise noted. Consult factory for Military and Industrial grade parts. ELECTRICAL C C HARA TERISTICS 1 2 3 4 TOP VIEW VLIM VOUT VIN V+ MODE GND VC DIODE N8 PACKAGE 8-LEAD PDIP 8 7 6 5 S8 PACKAGE 8-LEAD PLASTIC SO |
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