EVALUATION KIT AVAILABLE TC1044S Charge Pump DC-TO-DC Voltage Converter FEATURES GENERAL DESCRIPTION Converts +5V Logic Supply to 5V System The TC1044S is a pin-compatible upgrade to the Indus- Wide Input Voltage Range .................... 1.5V to 12V try standard TC7660 charge pump voltage converter. It Efficient Voltage Conversion ......................... 99.9% converts a +1.5V to +12V input to a corresponding 1.5V Excellent Power Efficiency ............................... 98% to 12V output using only two low cost capacitors, eliminat- Low Power Consumption ............ 80 A V = 5V ing inductors and their associated cost, size and EMI. IN Low Cost and Easy to Use Added features include an extended supply range to 12V, Only Two External Capacitors Required and a frequency boost pin for higher operating frequency, RS-232 Negative Power Supply allowing the use of smaller external capacitors. Available in 8-Pin Small Outline (SOIC) and 8-Pin The on-board oscillator operates at a nominal frequency Plastic DIP Packages of 10kHz. Frequency is increased to 45kHz when pin 1 is + Improved ESD Protection ..................... Up to 10kV connected to V . Operation below 10kHz (for lower supply No External Diode Required for High Voltage current applications) is possible by connecting an external Operation capacitor from OSC to ground (with pin 1 open). Frequency Boost Raises F to 45kHz The TC1044S is available in both 8-pin DIP and OSC 8-pin small outline (SOIC) packages in commercial and extended temperature ranges. ORDERING INFORMATION PIN CONFIGURATION (DIP AND SOIC) Part No. Package Temp. Range TC1044SCOA 8-Pin SOIC 0C to +70C + + BOOST 1 8 BOOST 1 8 V V TC1044SCPA 8-Pin Plastic DIP 0C to +70C + + CAP TC1044SCPA CAP 2 7 OSC 2 7 OSC TC1044SCOA TC1044SEPA TC1044SEOA TC1044SEOA 8-Pin SOIC 40C to +85C LOW LOW TC1044SIJA GND 3 6 GND 3 6 VOLTAGE (LV) VOLTAGE (LV) TC1044SMJA TC1044SEPA 8-Pin Plastic DIP 40C to +85C 4 5 V 4 5 V CAP CAP OUT OUT TC1044SIJA 8-Pin CerDIP 25C to +85C TC1044SMJA 8-Pin CerDIP 55C to +125C TC7660EV Charge Pump Family Evaluation Kit FUNCTIONAL BLOCK DIAGRAM + + CAP V 82 1 BOOST VOLTAGE 7 RC 4 2 LEVEL OSC CAP OSCILLATOR TRANSLATOR 6 LV 5 V OUT INTERNAL VOLTAGE REGULATOR LOGIC NETWORK TC1044S 3 GND 2001 Microchip Technology Inc. DS21348A TC1044S-12 9/16/96Charge Pump DC-TO-DC Voltage Converter TC1044S Package Power Dissipation (T 70C) (Note 2) A ABSOLUTE MAXIMUM RATINGS* 8-Pin CerDIP ..................................................800mW Supply Voltage ......................................................... +13V 8-Pin Plastic DIP .............................................730mW LV, Boost and OSC Inputs 8-Pin SOIC .....................................................470mW + Voltage (Note 1) ......................... 0.3V to (V + 0.3V) Operating Temperature Range + for V < 5.5V C Suffix .................................................. 0C to +70C + + (V 5.5V) to (V + 0.3V) I Suffix ............................................... 25C to +85C + for V > 5.5V E Suffix ............................................. 40C to +85C + Current Into LV (Note 1) ...................... 20 A for V > 3.5V M Suffix ........................................... 55C to +125C Output Short Duration (V 5.5V) ......... Continuous SUPPLY Storage Temperature Range ................ 65C to +150C Lead Temperature (Soldering, 10 sec) ................. +300C *Static-sensitive device. Unused devices must be stored in conductive material. Protect devices from static discharge and static fields. Stresses above those listed underAbsolute Maximum Rating may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. + ELECTRICAL CHARACTERISTICS: T = +25C, V = 5V, C = 0, Test Circuit (Figure 1), unless otherwise A OSC indicated. Symbol Parameter Test Conditions Min Typ Max Unit + I Supply Current R = 80 160 A L 0C < T < +70C 180 A 40C < T < +85C 180 A 55C < T < +125C 200 A + I Supply Current 0C < T < +70C 300 A A + (Boost Pin = V ) 40C < T < +85C 350 A 55C < T < +125C 400 A + V Supply Voltage Range, High Min T Max, 3 12 V H2 A R = 10 k , LV Open L + V Supply Voltage Range, Low Min T Max, 1.5 3.5 V L2 A R = 10 k , LV to GND L R Output Source Resistance I = 20mA 60 100 OUT OUT I = 20mA, 0C T +70C 70 120 OUT A I = 20mA, 40C T +85C 70 120 OUT A I = 20mA, 55C T +125C 105 150 OUT A + V = 2V, I = 3 mA, LV to GND OUT 0C T +70C 250 A 55C T +125C 400 A F Oscillator Frequency Pin 7 open Pin 1 open or GND 10 kHz OSC + Boost Pin = V 45 P Power Efficiency R = 5 k Boost Pin Open 96 98 % EFF L T < T < T Boost Pin Open 95 97 MIN A MAX + Boost Pin = V 88 V E Voltage Conversion Efficiency R = 99 99.9 % OUT FF L + Z Oscillator Impedance V = 2V 1 M OSC + V = 5V 100 k + NOTES: 1. Connecting any input terminal to voltages greater than V or less than GND may cause destructive latch-up. It is recommended that no inputs from sources operating from external supplies be applied prior topower u of the TC1044S. 2. Derate linearly above 50C by 5.5mW/C. TC1044S-12 9/16/96 2001 Microchip Technology Inc. DS21348A 2