MAX1722/MAX1723/ 1.5A I , Step-Up DC-DC Q MAX1724 Converters in TSOT and DFN General Description Benefits and Features The MAX1722/MAX1723/MAX1724 compact, high-efficiency, Up to 90% Efficiency step-up DC-DC converters are available in tiny, 5-pin No External Diode or FETs Needed TSOT packages. They feature an extremely low 1.5A 1.5A Quiescent Supply Current quiescent supply current to ensure the highest possible light-load efficiency. Optimized for operation from one 0.1A Logic-Controlled Shutdown to two alkaline or nickel-metal-hydride (NiMH) cells, or 1% Output Voltage Accuracy a single Li+ cell, these devices are ideal for applications Fixed Output Voltage (MAX1724) or Adjustable where extremely low quiescent current and ultra-small Output Voltage (MAX1722/MAX1723) size are critical. Up to 150mA Output Current Built-in synchronous rectification significantly improves 0.8V to 5.5V Input Voltage Range efficiency and reduces size and cost by eliminating the need for an external Schottky diode. All three devices 0.91V Guaranteed Startup (MAX1722/MAX1724) feature a 0.5 N-channel power switch. The MAX1722/ Internal EMI Suppression (MAX1722/MAX1724) MAX1724 also feature proprietary noise-reduction circuitry, TSOT Package (0.9mm typ Height) which suppresses electromagnetic interference (EMI) caused by the inductor in many step-up applications. The DFN Package (2mm x 2mm x 0.75mm) family offers different combinations of fixed or adjustable outputs, shutdown, and EMI reduction (see Selector Guide). Ordering Information and Selector Guide appears at end of data sheet. Applications Pagers Single-Cell Battery- Powered Devices Remote Controls Low-Power Hand-Held Remote Wireless Instruments Transmitters MP3 Players Personal Medical Devices Personal Digital Assistants (PDA) Digital Still Cameras Typical Operating Circuit 10H IN BATT LX 0.8V TO 5.5V MAX1724 OUT OUT ON 3.3V AT OFF SHDN UP TO 150mA GND 19-1735 Rev 5 8/17MAX1722/MAX1723/ 1.5A I , Step-Up DC-DC Q MAX1724 Converters in TSOT and DFN Absolute Maximum Ratings OUT, SHDN, BATT, LX to GND ...............................-0.3V to +6V Operating Temperature Range ........................... -40C to +85C FB to GND ..............................................-0.3V to (V + 0.3V) Junction Temperature ......................................................+150C OUT OUT, LX Current ......................................................................1A Storage Temperature Range ............................ -65C to +150C Continuous Power Dissipation (T = +70C) Soldering Temperature A 5-Pin Thin SOT (derate 2.7mW/C above +70C) ...219.10mW Lead(Pb)-free packages ..............................................+260C Packages containing lead(Pb) .....................................+240C 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 = 1.2V, V = 3.3V (MAX1722/MAX1723), V = V (MAX1724), SHDN = OUT, R = , T = 0C to +85C, BATT OUT OUT OUT(NOM) L A unless otherwise noted. Typical values are at T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Minimum Input Voltage MAX1722/MAX1724 0.8 V MAX1722/MAX1724 0.91 5.5 Operating Input Voltage V T = +25C V IN A MAX1723 (Note 2) 1.2 5.5 MAX1722/MAX1724 0.83 0.91 T = +25C, A Minimum Start-Up Input Voltage V R = 3k MAX1723 (Note 2) 0.87 1.2 L T = +25C 2.673 2.7 2.727 A MAX1724E 27 T = 0C to +85C 2.633 2.767 A T = +25C 2.970 3.0 3.030 A MAX1724E 30 T = 0C to +85C 2.925 3.075 A Output Voltage V V OUT T = +25C 3.267 3.3 3.333 A MAX1724E 33 T = 0C to +85C 3.218 3.383 A T = +25C 4.950 5.0 5.050 A MAX1724E 50 T = 0C to +85C 4.875 5.125 A Output Voltage Range V MAX1722/MAX1723 2 5.5 V OUT T = +25C 1.223 1.235 1.247 A Feedback Voltage V MAX1722/MAX1723 V FB T = 0C to +85C 1.210 1.260 A T = +25C 1.5 20 A Feedback Bias Current I MAX1722/MAX1723 nA FB T = +85C 2.2 A N-Channel On-Resistance R V forced to 3.3V 0.5 1.0 DS(ON) OUT P-Channel On-Resistance R V forced to 3.3V 1.0 2.0 DS(ON) OUT N-Channel Switch Current Limit I V forced to 3.3V 400 500 600 mA LIM OUT Switch Maximum On-Time t 3.5 5 6.5 s ON Synchronous Rectifier Zero- V forced to 3.3V 5 20 35 mA OUT Crossing Current Quiescent Current into OUT (Notes 3, 4) 1.5 3.6 A T = +25C 0.01 0.5 MAX1723/MAX1724 A Shutdown Current into OUT A (Notes 3, 4) T = +85C 0.1 A T = +25C 0.001 0.5 MAX1722/MAX1724 A Quiescent Current into BATT A (Note 4) T = +85C 0.01 A Maxim Integrated 2 www.maximintegrated.com