LT1054CS8#PBF Analog Devices

LT1054/LT1054L Switched-Capacitor Voltage Converter with Regulator FEATURES DESCRIPTION n Output Current The LT 1054 is a monolithic, bipolar, switched-capacitor n 100mA (LT1054) voltage converter and regulator. The LT1054 provides n 125mA (LT1054L) higher output current than previously available converters n Reference and Error Amplifier for Regulation with significantly lower voltage losses. An adaptive switch n Low Loss: 1.1V at 100mA driver scheme optimizes efficiency over a wide range of n Operating Range output currents. Total voltage loss at 100mA output current n 3.5V to 15V (LT1054) is typically 1.1V. This holds true over the full supply voltage n 3.5V to 7V (LT1054L) range of 3.5V to 15V. Quiescent current is typically 2.5mA. n External Shutdown The LT1054 also provides regulation, a feature not previ- n External Oscillator Synchronization ously available in switched-capacitor voltage converters. n Can Be Paralleled By adding an external resistive divider a regulated output n Pin Compatible with the LTC 1044/ICL7660 can be obtained. This output will be regulated against n Available in SW16 and SO-8 Packages changes in both input voltage and output current. The LT1054 can also be shut down by grounding the feedback pin. Supply current in shutdown is less than 100A. APPLICATIONS The internal oscillator of the LT1054 runs at a nominal n Voltage Inverter frequency of 25kHz. The oscillator pin can be used to n Voltage Regulator adjust the switching frequency or to externally synchro- n Negative Voltage Doubler nize the LT1054. n Positive Voltage Doubler All registered trademarks and trademarks are the property of their respective owners. The LT1054 is pin compatible with previous converters such the LTC1044/ICL7660. BLOCK DIAGRAM V REF V 6 IN LT1054/LT1054 Voltage Loss 8 2 2.5V 3.5V V 15V (LT1054) REFERENCE IN 3.5V V 7V (LT1054L) LT1054L IN R DRIVE C = C = 100F IN OUT INDICATES GUARANTEED + + CAP 2 TEST POINT C * LT1054 IN Q 1 1 OSC Q FEEDBACK/ SHUTDOWN CAP 4 7 R T = 125C J OSC T = 25C J DRIVE DRIVE T = 55C J 3 GND *EXTERNAL CAPACITORS 0 C * 0 25 50 75 100 125 OUT OUTPUT CURRENT (mA) 5 V OUT 1054 TA01 DRIVE LT1054 BD Rev. I 1 Document Feedback For more information www.analog.com VOLTAGE LOSS (V) + +LT1054/LT1054L ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (Note 2) Maximum Junction Temperature (Note 3) LT1054 .................................................................16V LT1054C/LT1054LC ......................................... 125C LT1054L .................................................................7V LT1054I ............................................................. 125C Input Voltage LT1054M (OBSOLETE PART) ........................... 150C + Pin 1 ................................................. 0V V V Storage Temperature Range PIN1 + Pin 3 (S Package) ............................. 0V V V J8, N8 and S8 Packages .................... 55C to 150C PIN3 Pin 7 .............................................. 0V V V S Package ......................................... 65C to 150C PIN7 REF Pin 13 (S Package) ....................... 0V V V Lead Temperature (Soldering, 10 sec) .................. 300C PIN13 REF Operating Junction Temperature Range LT1054C/LT1054LC .............................. 0C to 100C LT1054I ............................................. 40C to 100C LT1054M (OBSOLETE PART) ............ 55C to 125C PIN CONFIGURATION TOP VIEW TOP VIEW TOP VIEW NC 1 16 NC + FB/SHDN 1 8 V 2 NC 15 NC + FB/SHDN 1 8 V + CAP 2 7 OSC + FB/SHDN 3 14 V + CAP 2 7 OSC + GND 3 6 V CAP 4 13 OSC REF GND 3 V 6 REF 5 GND 12 V CAP V REF 4 5 OUT CAP 4 5 V OUT CAP 6 11 V OUT S8 PACKAGE NC 7 10 NC 8-LEAD PLASTIC SO N8 PACKAGE J8 PACKAGE 8 NC 9 NC 8-LEAD PLASTIC DIP 8-LEAD CERAMIC DIP T = 125C, = 120C/W JMAX JA (OBSOLETE PART) SEE REGULATION AND CAPACITOR SELECTION SECTIONS SW PACKAGE IN THE APPLICATIONS INFORMATION FOR IMPORTANT 16-LEAD PLASTIC SO T = 125C, = 130C/W JMAX JA INFORMATION ON THE S8 DEVICE T = 125C, = 150C/W JMAX JA ORDER INFORMATION LEAD FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT1054CN8 PBF LT1054CN8 8-Lead Plastic DIP 0C to 100C LT1054IN8 PBF LT1054IN8 8-Lead Plastic DIP 40C to 100C LT1054MJ8 OBSOLETE PART LT1054MJ8 8-Lead Ceramic DIP 55C to 125C LT1054CS8 PBF LT1054CS8 TRPBF 1054 8-Lead Plastic SO 0C to 100C LT1054LCS8 PBF LT1054LCS8 TRPBF 1054L 8-Lead Plastic SO 0C to 100C LT1054IS8 PBF LT1054IS8 TRPBF 1054I 8-Lead Plastic SO 40C to 100C LT1054CSW PBF LT1054CSW TRPBF LT1054CSW 16-Lead Plastic SO 0C to 100C LT1054ISW PBF LT1054ISW TRPBF LT1054ISW 16-Lead Plastic SO 40C to 100C LT1054CJ8 PBF OBSOLETE PART LT1054CJ8 TRPBF LT1054CJ8 8-Lead Ceramic DIP 0C to 100C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev. I 2 For more information www.analog.com