MAX1852/MAX1853 19-1792 Rev 0 9/00 SC70 Inverting Charge Pumps with Shutdown General Description Features The MAX1852/MAX1853 monolithic, CMOS charge- 30mA Output Current pump voltage inverters in the ultra-small SC70 package Low 15 Output Resistance feature a low 15 output resistance, permitting loads up to 30mA with maximum efficiency. The MAX1852/ 68A Supply Current (MAX1852) MAX1853 are available with operating frequencies of Requires Only Two 0.68F Capacitors (MAX1853) 50kHz and 200kHz, respectively, allowing optimization of supply current or external component size. Small +2.5V to +5.5V Input Voltage Range external components and micropower shutdown mode 0.1A Logic-Controlled Shutdown make these devices ideal for both battery-powered and board-level voltage conversion applications. Two Switching Frequencies Oscillator control circuitry and four power-MOSFET 50kHz (MAX1852) switches are included on-chip. Applications include 200kHz (MAX1853) generating a negative supply from a +5V or +3.3V logic Slew-Rate Limited to Reduce EMI supply to power analog circuitry. Both versions come in a 6-pin SC70 package that is 40% smaller than a Ultra-Small 6-Pin SC70 Package SOT23. Applications Negative Supply from +5V or +3.3V Logic Supplies Small LCD Panels Ordering Information GaAsFET Bias Supplies TEMP. PIN- TOP PART Handy-Terminals, PDAs RANGE PAC K A G E MARK Battery-Operated Equipment MAX1852EXT -40 C to +85 C 6 SC70 AAL MAX1853EXT -40 C to +85 C 6 SC70 AAM Pin Configuration Typical Operating Circuit 0.68 F TOP VIEW C1+ C1- NEGATIVE INPUT OUT 1 6 C1+ OUTPUT 2.5V TO 5.5V OUT IN -1 V IN 30mA MAX1852 C1- GND 2 5 MAX1853 MAX1853 0.68 F SHDN ON 3 IN SHDN 4 OFF GND SC70-6 Maxim Integrated Products 1 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.SC70 Inverting Charge Pumps with Shutdown ABSOLUTE MAXIMUM RATINGS IN to GND.................................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) A 6-Pin SC70 (derate 3.1mW/C above +70C) .............245mW C1+, SHDN to GND .....................................-0.3V to (V + 0.3V) IN Operating Temperature Range ...........................-40C to +85C C1- to GND...............................................(V - 0.3V) to +0.3V OUT Junction Temperature......................................................+150C OUT to GND .............................................................+0.3V to -6V Storage Temperature Range .............................-65C to +150C OUT Short-Circuit to GND ..............................................1 minute 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 = -40C to +85C, unless otherwise noted. Typical values are IN A at T = +25C.) (Note 1) A PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage Range 2.5 5.5 V T = +25C 75 130 A MAX1852 T = -40C to +85C 150 A Quiescent Supply Current A T = +25C 165 320 A MAX1853 T = -40C to +85C 350 A T = +25C 0.002 0.5 A Shutdown Supply Current SHDN = GND A T = +85C 0.01 A T = +25C 325068 A MAX1852 T = -40C to +85C25 78 A Oscillator Frequency kHz T = +25C 130 200 270 A MAX1853 T = -40C to +85C 110 310 A Voltage Conversion Efficiency I = 0 99 99.9 % OUT T = +25C1530 A Output Resistance (Note 2) I = 10mA OUT T = -40C to +85C40 A Output Current Continuous, long-term 30 mA RMS SHDN Input Logic High +2.5V V +5.5V 0.7 V V IN IN SHDN Input Logic Low +2.5V V +5.5V 0.3 V V IN IN T = +25C -100 1 100 A SHDN Bias Current SHDN = GND or IN nA T = +85C10 A MAX1852 260 Wake-Up Time From Shutdown I = 5mA s OUT MAX1853 112 Note 1: All devices are 100% production tested at T = +25C. All temperature limits are guaranteed by design. A Note 2: Output resistance is guaranteed with capacitor ESR of 0.3 or less. 2 MAX1852/MAX1853