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LTC1142_00 Datasheet(数据表) 2 Page - Linear Technology |
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LTC1142 Datasheet(HTML) 2 Page - Linear Technology |
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2 page 
2 LTC1142/LTC1142L/LTC1142HV Input Supply Voltage (Pins 10, 24) LTC1142, LTC1142L-ADJ ..................... 16V to – 0.3V LTC1142HV, LTC1142HV-ADJ ............. 20V to – 0.3V Continuous Output Current (Pins 6, 9, 20, 23) .... 50mA Sense Voltages (Pins 1, 14, 15, 28) VIN > 13V.............................................. 13V to –0.3V VIN < 13V.................................. (VIN + 0.3V) to –0.3V Operating Ambient Temperature Range ...... 0 °C to 70°C Extended Commercial Temperature Range ........................... – 40 °C to 85°C Junction Temperature (Note 2) ............................ 125 °C Storage Temperature Range ................ – 65 °C to 150°C Lead Temperature (Soldering, 10 sec)................. 300 °C ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO ELECTRICAL CHARACTERISTICS ORDER PART NUMBER Consult factory for Industrial and Military grade parts. ORDER PART NUMBER LTC1142CG LTC1142HVCG LTC1142HVCG-ADJ LTC1142LCG-ADJ TJMAX = 125°C, θJA = 95°C/W TJMAX = 125°C, θJA = 95°C/W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW G PACKAGE 28-LEAD PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 SENSE +3 SHDN3 SGND3 PGND3 NC NDRIVE 3 NC NC PDRIVE 5 VIN5 CT5 INTVCC5 ITH5 SENSE –5 SENSE –3 ITH3 INTVCC3 CT3 VIN3 PDRIVE 3 NC NC NDRIVE 5 NC PGND5 SGND5 SHDN5 SENSE +5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW G PACKAGE 28-LEAD PLASTIC SSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 SENSE+1 VFB1 SHDN1 SGND1 PGND1 NDRIVE 1 NC NC PDRIVE 2 VIN2 CT2 INTVCC2 ITH2 SENSE –2 SENSE –1 ITH1 INTVCC1 CT1 VIN1 PDRIVE 1 NC NC NDRIVE 2 PGND2 SGND2 SHDN2 VFB2 SENSE +2 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V2, V16 Feedback Voltage LTC1142HV-ADJ, LTC1142L-ADJ : V10, V24 = 9V q 1.21 1.25 1.29 V I2, I16 Feedback Current LTC1142HV-ADJ, LTC1142L-ADJ q 0.2 1 µA VOUT Regulated Output Voltage LTC1142, LTC1142HV 3.3V Output ILOAD = 700mA, V24 = 9V q 3.23 3.33 3.43 V 5V Output ILOAD = 700mA, V10 = 9V q 4.90 5.05 5.20 V ∆VOUT Output Voltage Line Regulation V10, V24 = 7V to 12V, ILOAD = 50mA – 40 0 40 mV Output Voltage Load Regulation Figure 1 Circuit 3.3V Output 5mA < ILOAD < 2A q 40 65 mV 5V Output 5mA < ILOAD < 2A q 60 100 mV Output Ripple (Burst Mode) ILOAD = 0A 50 mVP-P I10, I24 Input DC Supply Current (Note 3) LTC1142 Normal Mode 4V < V10, V24 < 12V 1.6 2.1 mA Sleep Mode 4V < V24 < 12V, 6V < V10 < 12V 160 230 µA Shutdown VSD1 = VSD2 = 2.1V, 4V < V10, V24 < 12V 10 20 µA The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V10 = V24 = 10V, VSHDN = 0V unless otherwise noted. (Note 1) |
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