LT1512 absoluTe MaxiMuM raTingspin conFiguraTion(Note 1) Input Voltage ... 30V TOP VIEW Switch Voltage ... 40V VC 1 8 VSW S/S Pin Voltage .. 30V FB 2 7 GND FB Pin Voltage (Transient, 10ms) ... ±10V IFB 3 6 GND S VFB Pin Current ... 10mA S/S 4 5 VIN IFB Pin Voltage (Transient, 10ms) .. ±10V N8 PACKAGE S8 PACKAGE Storage Temperature Range .. –65°C to 150°C 8-LEAD PDIP 8-LEAD PLASTIC SO Ambient Temperature Range TJMAx = 125°C, qJA = 100°C/w (N) TJMAx = 125°C, qJA = 130°C/w (S) LT1512C (Note 2) ... 0°C to 70°C NOTE: CONTACT FACTORy CONCERNING 16-LEAD LT1512I .. –40°C to 85°C FUSED-LEAD GN PACKAGE wITH LOwER THERMAL RESISTANCE Operating Junction Temperature Range LT1512C (Note 2) .. –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 inForMaTion LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LT1512CN8#PBF LT1512CN8#TRPBF 1512 8-Lead PDIP 0°C to 70°C LT1512CS8#PBF LT1512CS8#TRPBF 1512 8-Lead Plastic SO 0°C to 70°C LT1512IN8#PBF LT1512IN8#TRPBF 1512I 8-Lead PDIP –40°C to 85°C LT1512IS8#PBF LT1512IS8#TRPBF 1512I 8-Lead Plastic SO –40°C to 85°C LEAD BASED FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LT1512CN8 LT1512CN8#TR 1512 8-Lead PDIP 0°C to 70°C LT1512CS8 LT1512CS8#TR 1512 8-Lead Plastic SO 0°C to 70°C LT1512IN8 LT1512IN8#TR 1512I 8-Lead PDIP –40°C to 85°C LT1512IS8 LT1512IS8#TR 1512I 8-Lead Plastic SO –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ elecTrical characTerisTicsThe l denotes the specifications which apply over the full operatingtemperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VC = 0.6V, VFB = VREF, IFB = 0V, VSW and S/S pins open,unless otherwise noted. SYMBOLPARAMETERCONDITIONSMINTYPMAXUNITS VREF VFB Reference Voltage Measured at FB Pin 1.233 1.245 1.257 V VC = 0.8V l 1.228 1.245 1.262 V FB Input Current VFB = VREF 300 550 nA l 600 nA FB Reference Voltage Line Regulation 2.7V ≤ VIN ≤ 25V, VC = 0.8V l 0.01 0.03 %/V 1512fc 2 For more information www.linear.com/LT1512 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts