LTC1044A 12V CMOS Voltage Converter Fea T Descrip T n 1.5V to 12V Operating Supply Voltage Range The LTC 1044A is a monolithic CMOS switched-capacitor n 13V Absolute Maximum Rating voltage converter. It plugs in for ICL7660/LTC1044 in n 200A Maximum No Load Supply Current at 5V applications where higher input voltage (up to 12V) is n Boost Pin (Pin 1) for Higher Switching Frequency needed. The LTC1044A provides several conversion func- n 97% Minimum Open Circuit Voltage Conversion tions without using inductors. The input voltage can be Efficiency inverted (V = V ), doubled (V = 2V ), divided OUT IN OUT IN n 95% Minimum Power Conversion Efficiency (V = V /2) or multiplied (V = nV ). OUT IN OUT IN + n I = 1.5A with 5V Supply When OSC Pin = 0V or V S To optimize performance in specific applications, a boost n High Voltage Upgrade to ICL7660/LTC1044 function is available to raise the internal oscillator frequency by a factor of seven. Smaller external capacitors can be used in higher frequency operation to save board space. a T The internal oscillator can also be disabled to save power. n Conversion of 10V to 10V Supplies The supply current drops to 1.5A at 5V input when the n Conversion of 5V to 5V Supplies + OSC pin is tied to GND or V . n Precise Voltage Division: V = V /2 20ppm OUT IN L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Technology Corporation. All other trademarks are the property of their respective owners. Voltage Multiplication: V = nV OUT IN n Supply Splitter: V = V /2 OUT S n Automotive Applications n Battery Systems with 9V Wall Adapters/Chargers Typical a T + Generating 10V from 10V Output Voltage vs Load Current, V = 10V 0 LTC1044A T = 25C A 1 1 8 + C1 = C2 = 10F 10V INPUT BOOST V 2 7 2 + CAP OSC + 3 3 6 10F GND LV 4 4 5 CAP V 10V OUTPUT OUT 5 1044a TA01a 10F 6 SLOPE = 45 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 LOAD CURRENT (mA) 1044a TA01b 1044afa 1 For more information www.linear.com/LTC1044A OUTPUT VOLTAGE (V) + ion pplica ions pplica ion uresLTC1044A a Te Maxi Mu M r a T (Note 1) Supply Voltage ..........................................................13V Operating Temperature Range Input Voltage on Pins 1, 6 and 7 LTC1044AC .............................................. 0C to 70C + (Note 2) ..................................0.3V < V < V + 0.3V LTC1044AI ........................................... 40C to 85C IN Current into Pin 6 ....................................................20A Storage Temperature Range ................... 65C to 150C Output Short-Circuit Duration Lead Temperature (Soldering, 10 sec) .................. 300C + V 6.5V ......................................................Continuous p c F T TOP VIEW TOP VIEW + + BOOST 1 V BOOST 1 8 V 8 + + CAP 2 7 OSC CAP 2 7 OSC GND 3 6 LV GND 3 6 LV CAP 4 5 V CAP 4 5 V OUT OUT N8 PACKAGE S8 PACKAGE 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SO T = 110C, = 100C/W T = 110C, = 130C/W JMAX JA JMAX JA Consult factory for military grade parts o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1044ACN8 PBF LTC1044ACN8 TRPBF LTC1044 ACN8 8-Lead Plastic DIP 0C to 70C LTC1044AIN8 PBF LTC1044AIN8 TRPBF LTC1044 AIN8 8-Lead Plastic DIP 40C to 85C LTC1044ACS8 PBF LTC1044ACS8 TRPBF 1044A 8-Lead Plastic SO 0C to 70C LTC1044AIS8 PBF LTC1044AIS8 TRPBF 1044AI 8-Lead Plastic SO 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: