MAX1697 19-1499 Rev 3 12/08 60mA, SOT23 Inverting Charge Pump with Shutdown General Description Features The MAX1697 ultra-small, monolithic, CMOS charge- 60mA Output Current pump voltage inverter accepts an input voltage ranging Low 12 Output Resistance from +1.25V to +5.5V. This device features an ultra-low 150A Supply Current (MAX1697R) 12 output resistance, permitting loads of up to 60mA with maximum efficiency. The MAX1697 is available Requires Only Two 1F Capacitors (MAX1697U) with operating frequencies of 12kHz, 35kHz, 125kHz, or Start-Up Current Limited 250kHz, allowing optimization of supply current or external component size. Its small external components +1.25V to +5.5V Input Voltage Range and micropower shutdown mode make this device Slew-Rate Limited to Reduce EMI ideal for both battery-powered and board-level voltage conversion applications. Ordering Information Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include PART TEMP RANGE PIN-PACKAGE generating a negative supply from a +5V or +3.3V logic MAX1697 EUT-T 6 SOT23 -40C to +85C supply to power analog circuitry. All versions come in a Note 1: The MAX1697 requires special solder temperature pro- 6-pin SOT23 package and deliver 60mA. file described in the Absolute Maximum Ratings section. For applications with lower current requirements, the Note 2: The MAX1697 is available with four different operating MAX1719/MAX1720/MAX1721 are pin-compatible frequencies. Choose the desired frequency from the table SOT23 charge pumps that supply up to 25mA. below and insert the suffix in the blank above to complete the part number. Applications TOP MARK PART NO. FREQUENCY SUFFIX (kHz) -T +T T Negative Supply from +5V or +3.3V Logic Supplies R 12 AABV AABV ACBT Small LCD Panels S 35 AABW AABW ACCK GaAsFET Bias Supplies T 125 AABX AABX ACCL Handy-Terminals, PDAs U 250 AABY AABY ACCM Battery-Operated Equipment Note 3: MAX1697 is available in different package material. Add the following suffix to the part number when ordering: -T = Denotes a package containing lead(Pb). +T = Denotes a lead(Pb)-free/RoHS-compliant package. T = Denotes an RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements. Typical Operating Circuit Pin Configuration TOP VIEW 1F + OUT 1 C1+ 6 C1+ C1- NEGATIVE INPUT MAX1697 OUTPUT 1.5V to 5.5V IN 2 5 SHDN OUT IN -1 V IN 60mA MAX1697U C1- 3 4 GND 1F SHDN ON SOT23 OFF GND Note 4: Leaded and lead-free top marks are identical. Per Maxim guideline, the pin 1 indicator for leaded package is a and the lead-free package is a +. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim s website at www.maxim-ic.com.60mA, SOT23 Inverting Charge Pump with Shutdown ABSOLUTE MAXIMUM RATINGS IN to GND.................................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A C1+, SHDN to GND .....................................-0.3V to (V + 0.3V) 6-Pin SOT23 (derate 14mW/C above +70C) (Note 5)...1.1W IN C1- to GND..............................................(V - 0.3V) to + 0.3V Operating Temperature Range ...........................-40C to +85C OUT Junction Temperature......................................................+150C OUT to GND .............................................................+0.3V to -6V Storage Temperature Range .............................-65C to +150C OUT Output Current............................................................90mA Lead Temperature ..........................................................(Note 6) OUT Short-Circuit to GND .............................................Indefinite Note 5: Thermal properties are specified with product mounted on the PC board with one square-inch of copper area and still air. Note 6: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board level solder attach and rework. Maxim recommends the use of the solder profiles recommended in the industry standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection reflow processes. Preheating, per this standard, is required. Hand or wave soldering is not recommended. 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 (Circuit of Figure 1, capacitors from Table 2, V = +5V, SHDN = IN, T = 0C to +85C, unless otherwise noted. Typical values are at IN A T = +25C.) A PARAMETER CONDITIONS MIN TYP MAX UNITS T = +25C 1.25 5.5 A MAX1697R/S, R = 5k L T = 0C to +85C 1.5 5.5 A Supply Voltage Range V T = +25C 1.4 5.5 A MAX1697T/U, R = 5k L T = 0C to +85C 1.5 5.5 A MAX1697R 150 300 MAX1697S 350 650 Quiescent Supply Current T = +25C A A (Note 9) MAX1697T 950 1700 MAX1697U 1800 3400 T = +25C 0.002 1 A Shutdown Supply Current SHDN = GND A T = +85C 0.03 A Short-Circuit Current Output shorted to ground, T = +25C 170 mA A MAX1697R 712 17 MAX1697S 20 35 50 Oscillator Frequency T = +25C kHz A MAX1697T 70 125 180 MAX1697U 140 250 360 Voltage Conversion Efficiency I = 0, T = +25C 99 99.9 % OUT A T = +25C 12 25 A Output Resistance (Note 7) I = 60mA OUT T = 0C to +85C 33 A OUT to GND Shutdown SHDN = GND, OUT is internally pulled to GND 38 Resistance in shutdown 2.5V V 5.5V 2.0 IN V SHDN Input Logic High V V 2.5V V - 0.2 IN(MIN) IN IN 2.5V V 5.5V 0.6 IN SHDN Input Logic Low V V V 2.5V 0.2 IN(MIN) IN T = +25C -100 0.05 +100 A SHDN Bias Current SHDN = GND or IN nA T = +85C 10 A 2 MAX1697