MAX1595 19-2107 Rev 3 10/11 Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump General Description Features The MAX1595 charge-pump regulator generates either Ultra-Small: Requires Only Three Ceramic 3.3V or 5V from a 1.8V to 5.5V input. The unique control Capacitors architecture allows the regulator to step up or step down No Inductors Required the input voltage to maintain output regulation. The 1MHz switching frequency, combined with a unique Up to 125mA Output Current control scheme, allows the use of a ceramic capacitor Regulated 3% Output Voltage as small as 1F for 125mA of output current. The com- plete regulator requires three external capacitorsno 1MHz Switching Frequency inductor is needed. The MAX1595 is specifically 1.8V to 5.5V Input Voltage designed to serve as a high-power, high- efficiency aux- iliary supply in applications that demand a compact 220A Quiescent Current design. The MAX1595 is offered in space-saving 8-pin MAX and high-power 12-pin TQFN packages. 0.1A Shutdown Current Applications Load Disconnect in Shutdown White LED Power Ordering Information Flash Memory Supplies PART TEMP RANGE PIN-PACKAGE Battery-Powered Applications 8 MAX MAX1595EUA33+ -40C to +85C Miniature Equipment MAX1595ETC33+ 12 TQFN-EP* -40C to +85C PCMCIA Cards MAX1595EUA50+ 8 MAX -40C to +85C 3.3V to 5V Local Conversion Applications MAX1595ETC50+ 12 TQFN-EP* -40C to +85C Backup-Battery Boost Converters +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. 3V to 5V GSM SIMM Cards Selector Guide MAX is a registered trademark of Maxim Integrated Products, Inc. PART V (V)** TO P MAR K OUT MAX1595EUA33+ 3.3 MAX1595ETC33+ AAEH 3.3 Typical Operating Circuit MAX1595EUA50+ 5.0 MAX1595ETC50+ AAEI 5.0 **Contact factory for other fixed-output voltages from 2.7V to 5.0V. Pin Configurations CXN CXP MAX1595 TOP VIEW INPUT IN OUT OUTPUT AOUT AOUT 1 8 OUT SHDN SHDN 2 7 CXP MAX1595 IN 3 6 CXN PGND GND GND 4 5 PGND MAX Pin Configurations continued at end of data sheet. Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Regulated 3.3V/5.0V Step-Up/ Step-Down Charge Pump ABSOLUTE MAXIMUM RATINGS IN, OUT, AOUT to GND............................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A SHDN to PGND ........................................................-0.3V to +6V MAX (derate 4.8mW/C above +70C) ..................387.8mW PGND to GND .......................................................-0.3V to +0.3V TQFN-EP (derate 24.4mW/C above +70C).........1951.2mW CXN to PGND.....................-0.3V to (Lower of IN + 0.8V or 6.3V) Operating Temperature Range ...........................-40C to +85C CXP to GND ................................-0.8V to (Higher of OUT + 0.8V Junction Temperature......................................................+150C or IN + 0.8V but not greater than 6V) Storage Temperature Range .............................-65C to +150C Continuous Output Current...............................................150mA Lead Temperature (soldering, 10s) .................................+300C Soldering Temperature (reflow) .......................................+260C 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) TQFN MAX Junction-to-Ambient Thermal Resistance ( )..........41C/W Junction-to-Ambient Thermal Resistance ( ).....206.3C/W JA JA Junction-to-Case Thermal Resistance ( ).................6C/W Junction-to-Case Thermal Resistance ( )...............42C/W JC JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four- layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (V = 2V for MAX1595 33, V = 3V for MAX1595 50, C = 1F, C = 0.22F, C = 1F, T = -40 to +85C, unless otherwise IN IN IN X OUT A noted. Typical values are at T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range V 1.8 5.5 V IN Input Undervoltage Lockout 1.40 1.60 1.72 V Threshold Input Undervoltage Lockout 40 mV Hysteresis T = 0C to +85C 4.85 5.05 5.15 0 < I < 125m A, A L OA D V = + 3.0V I N T = -40C to +85C 4.80 5.20 A T = 0C to +85C 3.20 3.33 3.40 0 < I < 75mA, V A LOAD IN Output Voltage V V OUT = +2.0V T = -40C to +85C 3.16 3.44 A T = 0C to +85C 3.20 3.33 3.40 0 < I < 30mA, V A LOAD IN = +1.8V T = -40C to +85C 3.16 3.44 A V = +2.0V, MAX1595 33 220 320 IN No-Load Input Current I A Q V = +3.0V, MAX1595 50 240 350 IN Switching Frequency f I > 20mA, V > V 0.85 1.0 1.15 MHz OSC L OAD OUT IN Shutdown Supply Current I V = 0V, V = +5.5V, V = 0V 5 A SHDN SHDN IN OUT SHDN Input Voltage Low V V = 2.0V to 5.5V 0.6 V INL IN SHDN Input Voltage High V V = 2.0V to 5.5V 1.6 V INH IN SHDN Input Leakage Current 0.1 A Note 2: Specifications to -40C are guaranteed by design, not production tested. 2 MAX1595