MAX619 19-0227 Rev 2 5/96 Regulated 5V Charge-Pump DC-DC Converter General Description Features The MAX619 step-up charge-pump DC-DC converter Regulated 5V 4% Charge Pump delivers a regulated 5V 4% output at 50mA over tem- Output Current Guaranteed over Temperature perature. The input voltage range is 2V to 3.6V (two 20mA (VIN 2V) battery cells). 50mA (V 3V) IN 2 The complete MAX619 circuit fits into less than 0.1in of 2V to 3.6V Input Range board space because it requires only four external No Inductors Very Low EMI Noise capacitors: two 0.22m F flying capacitors, and 10m F 2 Ultra-Small Application Circuit (0.1in ) capacitors at the input and output. Uses Small, Inexpensive Capacitors Low operating supply current (150m A max) and low 500kHz Internal Oscillator shutdown supply current (1m A max) make this device ideal for small, portable, and battery-powered applica- Logic-Controlled 1m A Max Shutdown tions. When shut down, the load is disconnected from Supply Current the input. Shutdown Disconnects Load from Input The MAX619 is available in 8-pin DIP and SO packages. 8-Pin DIP and SO Packages Applications Ordering Information Two Battery Cells to 5V Conversion PART TEMP. RANGE PIN-PACKAGE Local 3V-to-5V Conversion MAX619CPA 0C to +70C 8 Plastic DIP Portable Instruments & Handy-Terminals MAX619CSA 0C to +70C 8 SO Battery-Powered Microprocessor-Based Systems MAX619C/D 0C to +70C Dice* 5V Flash Memory Programmer MAX619EPA -40C to +85C 8 Plastic DIP Minimum Component DC-DC Converters MAX619ESA -40C to +85C 8 SO Remote Data-Acquisition Systems MAX619MJA -55C to +125C 8 CERDIP Compact 5V Op-Amp Supply * Dice are specified at T = +25 C. A Regulated 5V Supply from Lithium Backup Battery Switching Drive Voltage for MOSFETs in Low-Voltage Systems Pin Configuration Typical Operating Circuit TOP VIEW INPUT IN OUT OUTPUT 2V to 3.6V 5V, 20mA 10F 10F C1+ 1 8 C1- MAX619 ON/OFF SHDN IN SHDN 2 7 MAX619 C1+ C2+ OUT GND 3 6 C2+ C2- 4 5 0.22F 0.22F C1- C2- DIP/SO GND Maxim Integrated Products 1 For free samples & the latest literature: Regulated 5V Charge-Pump DC-DC Converter ABSOLUTE MAXIMUM RATINGS V to GND ............................................................-0.3V to +5.5V Operating Temperature Ranges IN V to GND .........................................................-0.3V to +5.5V MAX619C .......................................................0C to +70C OUT SHDN to GND..............................................-0.3V to (V + 0.3V) MAX619E ....................................................-40C to +85C IN I Continuous (Note 1)..................................................120mA MAX619MJA ..................................................-55C to +125C OUT Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +165C A Plastic DIP (derate 9.09mW/C above +70C) ............727mW Lead Temperature (soldering, 10sec) .............................+300C SO (derate 5.88mW/C above +70C).........................471mW CERDIP (derate 8.00mW/C above +70C).................640mW Note 1: The MAX619 is not short-circuit protected. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 2V to 3.6V, C1 = C2 = 0.22m F, C3 = C4 = 10F, T = T to T , unless otherwise noted. Typical values are at T = +25C.) IN A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage V 2 3.6 V IN 2.0V V 3.6V, 0mA I 20mA IN OUT 3.0V V 3.6V, 0mA I 50mA, MAX619C IN OUT Output Voltage V 4.8 5.0 5.2 V OUT 3.0V V 3.6V, 0mA I 45mA, MAX619E IN OUT 3.0V V 3.6V, 0mA I 40mA, MAX619M IN OUT Output Ripple V No load to full load 100 mV RIPPLE No-Load Supply Current I 2V V 3.6V, I = 0mA 75 170 m A IN IN OUT MAX619C/E 0.02 1 Shutdown Supply 2V V 3.6V, I = 0mA, IN OUT m A Current V = V SHDN IN MAX619M 10 V = 3V, I = 20mA 82 IN OUT Efficiency Eff V = 3V, I = 30mA 82 % IN OUT V = 2V, I = 20mA 80 IN OUT Switching Frequency At full load 500 kHz V 0.7 x V IH IN SHDN Input Threshold V V 0.4 IL MAX619C/E 1 SHDN Input Current I V = V m A IH SHDN IN MAX619M 10 2 MAX619