MAX630/MAX4193 19-0915 Rev 2 9/08 CMOS Micropower Step-Up Switching Regulator General Description Features Maxims MAX630 and MAX4193 CMOS DC-DC regula- High Efficiency85% (typ) tors are designed for simple, efficient, minimum-size 70A Typical Operating Current DC-DC converter circuits in the 5mW to 5W range. The 1A Maximum Quiescent Current MAX630 and MAX4193 provide all control and power 2.0V to 16.5V Operation handling functions in a compact 8-pin package: a 525mA (Peak) Onboard Drive Capability 1.31V bandgap reference, an oscillator, a voltage com- 1.5% Output Voltage Accuracy (MAX630) parator, and a 375mA N-channel output MOSFET. A comparator is also provided for low-battery detection. Low-Battery Detector Compact 8-Pin Mini-DIP and SO Packages Operating current is only 70A and is nearly indepen- dent of output switch current or duty cycle. A logic-level Pin Compatible with RC4191/2/3 input shuts down the regulator to less than 1A quies- Ordering Information cent current. Low-current operation ensures high effi- ciency even in low-power battery-operated systems. PIN- PART TEMP RANGE The MAX630 and MAX4193 are compatible with most PACKAGE battery voltages, operating from 2.0V to 16.5V. MAX630CPA 0C to +70C 8 PDIP The devices are pin compatible with the Raytheon bipo- MAX630CSA 0C to +70C 8 SO lar circuits, RC4191/2/3, while providing significantly improved efficiency and low-voltage operation. Maxim MAX630CJA 0C to +70C 8 CERDIP also manufactures the MAX631, MAX632, and MAX633 MAX630EPA -40C to +85C 8 PDIP DC-DC converters, which reduce the external compo- MAX630ESA -40C to +85C 8 SO nent count in fixed-output 5V, 12V, and 15V circuits. MAX630EJA -40C to +85C 8 CERDIP See Table 2 at the end of this data sheet for a summary MAX630MJA -55C to +125C 8 CERDIP** of other Maxim DC-DC converters. MAX630MSA/PR -55C to +125C 8 SO Applications M AX 630MS A/PR- T -55C to +125C 8 SO +5V to +15V DC-DC Converters MAX4193C/D 0C to +70C Dice* High-Efficiency Battery-Powered DC-DC MAX4193CPA 0C to +70C 8 PDIP Converters MAX4193CSA 0C to +70C 8 SO +3V to +5V DC-DC Converters MAX4193CJA 0C to +70C 8 CERDIP 9V Battery Life Extension Uninterruptible 5V Power Supplies MAX4193EPA -40C to +85C 8 PDIP 5mW to 5W Switch-Mode Power Supplies MAX4193ESA -40C to +85C 8 SO MAX4193EJA -40C to +85C 8 CERDIP Typical Operating Circuit MAX4193MJA -55C to +125C 8 CERDIP** *Dice are specified at T = +25C. Contact factory for dice A +5V IN specifications. 470H **Contact factory for availability and processing to MIL-STD-883. Contact factory for availibility. 6 5 Pin Configuration I +V C S 8 3 LBD L X TOP VIEW MAX630 LBR 1 8 LBD 7 +15V 1 LBR V C 2 7 V FB X FB OUT MAX630 C GND X MAX4193 L 3 6 I X C 2 4 47pF GND 4 5 +V S +5 TO +15V CONVERTER Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.CMOS Micropower Step-Up Switching Regulator ABSOLUTE MAXIMUM RATINGS Supply Voltage.......................................................................18V Power Dissipation Storage Temperature Range ............................-65C to +160C 8-Pin PDIP (derate 6.25mW/C above +50C).............468mW Lead Temperature (soldering, 10s) .................................+300C 8-Pin SO (derate 5.88mW/C above +50C)................441mW Operating Temperature Range 8-Pin CERDIP (derate 8.33mW/C above +50C)........833mW MAX630C, MAX4193C........................................0C to +70C Input Voltage (Pins 1, 2, 6, 7) .....................-0.3V to (+V + 0.3V) S MAX630E, MAX4193E .....................................-40C to +85C Output Voltage, L and LBD ..................................................18V X MAX630M, MAX4193M..................................-55C to +125C L Output Current ..................................................525mA (Peak) X LBD Output Current ............................................................50mA 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 = +6.0V, T = +25C, I = 5.0A, unless otherwise noted.) S A C MAX630 MAX4193 PARAMETER SYMBOL CONDITIONS UNITS MIN TYP MAX MIN TYP MAX Operating 2.0 16.5 Supply Voltage +V 2.4 16.5 V S Startup 1.9 Internal Reference Voltage V 1.29 1.31 1.33 1.24 1.31 1.38 V REF Switch Current I V = 400mV 75 150 75 150 mA SW 3 Supply Current (at Pin 5) I I = 0mA 70 125 90 A S 3 Efficiency 85 85 % 0.5V < V < V 0 S 0 Line Regulation 0.08 0.2 0.06 0.5 % V OUT (Note 1) V = +5V, P = 0 to S LOAD Load Regulation 0.2 0.5 0.2 0.5 % V OUT 150mW (Note 1) Operating Frequency Range F (Note 2) 0.1 40 75 0.1 25 75 kHz O Reference Set Internal R V = V 0.5 1.5 10 0.5 1.5 10 M IC 6 S Pulldown Resistance Reference Set Input Voltage V 0.2 0.8 1.3 0.2 0.8 1.3 V IC Threshold Switch Current I V = 1.0V 100 100 mA SW 3 Switch Leakage Current I V = 16.5V 0.01 1.0 0.01 5.0 A CO 3 Supply Current (Shutdown) I I < 0.01A 0.01 1.0 0.01 5.0 A SO C Low-Battery Bias Current I 0.01 10 0.01 10 nA LBR Capacitor Charging Current I 30 30 A CX C + Threshold Voltage +V - 0.1 +V - 0.1 V X S S C - Threshold Voltage 0.1 0.1 V X V Input Bias Current I 0.01 10 0.01 10 nA FB FB Low-Battery Detector Output I V = 0.4V, V = 1.1V 250 600 250 600 A LBD 8 1 Current Low-Battery Detector Output I V = 16.5V, V = 1.4V 0.01 5.0 0.01 5.0 A LBDO 8 1 Leakage 2 MAX630/MAX4193