MAX682/MAX683/MAX684 19-0177 Rev 1 8/98 3.3V-Input to Regulated 5V-Output Charge Pumps General Description Features The MAX682/MAX683/MAX684 charge-pump regula- Ultra-Small: 1F Capacitors per 100mA of Output tors generate 5V from a 2.7V to 5.5V input. They are Current specifically designed to serve as high-efficiency auxil- No Inductors Required iary supplies in applications that demand a compact design. The MAX682, MAX683, and MAX684 deliver 1.1mm Height in MAX Package (MAX683/MAX684) 250mA, 100mA, and 50mA output current, respectively. Up to 250mA Output Current (MAX682) These complete 5V regulators require only one resistor and three external capacitorsno inductors are need- Regulated 4% Output Voltage ed. High switching frequencies (externally adjustable 50kHz to 2MHz Adjustable Switching Frequency up to 2MHz) and a unique regulation scheme allow the use of capacitors as small as 1F per 100mA of output 2.7V to 5.5V Input Voltage current. The MAX683/MAX684 are offered in a space- 100A Quiescent Current in Pulse-Skipping Mode saving 8-pin MAX package that is only 1.1mm high, while the MAX682 is available in an 8-pin SO. 0.1A Shutdown Current Applications Flash Memory Supplies Ordering Information Battery-Powered Applications PART TEMP. RANGE PIN-PACKAGE Miniature Equipment MAX682ESA -40C to +85C 8 SO PCMCIA Cards MAX683EUA -40C to +85C 8 MAX 3.3V to 5V Local Conversion Applications MAX684EUA -40C to +85C 8 MAX Backup-Battery Boost Converters 3V to 5V GSM SIMM Cards Typical Operating Circuit Pin Configurations TOP VIEW CXN CXP SKIP 1 8 OUT SKIP 1 8 OUT MAX682 INPUT OUTPUT SHDN 2 7 CXP SHDN 2 7 CXP IN OUT 2.7V TO 5.5V 5V/250mA MAX682 MAX683 MAX684 IN 3 6 CXN IN 3 6 CXN SKIP R EXT GND 4 5 PGND GND 4 5 PGND SHDN GND PGND SO MAX Maxim Integrated Products 1 For free samples & the latest literature: 3.3V-Input to Regulated 5V-Output Charge Pumps ABSOLUTE MAXIMUM RATINGS IN, OUT, SHDN, SKIP to GND.................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A 8-Pin SO (derate 5.9mW/C above +70C).................471mW PGND to GND.....................................................................0.3V CXN to GND ................................................-0.3V to (V + 0.3V) 8-Pin MAX (derate 4.1mW/C above +70C) ............330mW IN Operating Temperature Range CXP to GND..............................................-0.3V to (V + 0.3V) OUT Continuous Output Current MAX68 E A ....................................................-40C to +85C Junction Temperature......................................................+150C MAX682........................................................................300mA MAX683........................................................................150mA Storage Temperature Range .............................-65C to +160C Lead Temperature (soldering, 10sec) .............................+300C MAX684..........................................................................75mA Output Short-Circuit Duration ...............................................5sec 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 = 3V, V = 0V, C = 1F, C = 0.47F, C = 2F, I = 22A I = 250mA for MAX682, I = 100mA for MAX683, IN SKIP IN X OUT SHDN MAX MAX I = 50mA for MAX684 T = T to T , unless otherwise noted. Typical values are at T = +25C.) (Note 1) MAX A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Regulation with V > 3.6V requires IN Input Voltage Range V 2.7 5.5 V IN SKIP = high Input Undervoltage Lockout 2.0 2.35 2.6 V Threshold Input Undervoltage Lockout 100 mV Hysteresis 0 < I I LOAD MAX 3.0V IN 3.6V for SKIP = 0, Output Voltage V 3.0V IN 3.6V for SKIP = 0, 4.80 5.05 5.20 V OUT 3.0V IN 5.5V for SKIP = IN MAX682 250 Maximum Output Current I MAX683 100 mA MAX MAX684 50 SKIP = 0, V = 3.6V 0.1 0.18 IN MAX682 7.5 No-Load Input Current I mA Q SKIP = V = 3.6V MAX683 2.5 IN MAX684 1.7 Load Regulation V SKIP = high, 0 I I -3 % LDR LOAD MAX V 0.35 V SHDN Logic Low Input INL, SHDN SHDN On Bias Voltage V T = +25C 630 690 750 mV ON, SHDN A SHDN Input Current Range I (Note 2) 1 50 A SHDN 0C < T < +85C 850 1000 1200 A I = 22A SHDN -40C < T < +85C 750 1000 1300 A Switching Frequency (Note 2) kHz 0C < T < +85C 160 200 250 A I =4.4A SHDN -40C < T < +85C 150 200 270 A Shutdown Supply Current I 0.1 5 A Q, SHDN SHDN = 0, V = 5.5V, V = 0 IN OUT Shutdown Exit Time t R = 5V/I 50 s START L MAX 2 MAX682/MAX683/MAX684