MAX1749 19-1455 Rev 1 6/99 SOT23 Vibrator Motor Driver General Description Features The MAX1749 allows for a constant vibration force while Fixed 1.25V or Adjustable (1.25V to 6.5V) Output operating from a +2.5V to +6.5V input range and deliver- Low Cost ing up to 120mA. A PMOS pass transistor allows the 80A supply current to remain independent of the load. Thermal Overload Protection The output voltage can be adjusted from +1.25V to V IN Output Current Limit with an external resistor-divider. When turned off (ON = low), the MAX1749 supply current drops to 1A Reverse Battery Protection (max) to minimize battery drain. Other features include Low 0.1nA Off Supply Current short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX1749 is avail- Low 80A Full-Load Supply Current able in a 5-pin SOT23 package. Applications Ordering Information Wireless Handset Vibrator Motor Drivers PIN- TOP PART TEMP. RANGE Pager Vibrator Motor Drivers PACKAGE MARK MAX1749EUK-T -40C to +85C 5 SOT23 ADIX Typical Operating Circuit Pin Configuration TOP VIEW 1.25V UP TO 120mA 2.5V TO 6.5V ON 1 5 SET OUT IN C C OUT IN 1F 1F ON MAX1749 MAX1749 2 GND ON SET BATTERY OFF GND 3 OUT IN 4 SOT23-5 Maxim Integrated Products 1 For free samples & the latest literature: SOT23 Vibrator Motor Driver ABSOLUTE MAXIMUM RATINGS IN to GND....................................................................-7V to +7V Operating Temperature Range ...........................-40C to +85C Output Short-Circuit Duration ............................................Infinite Junction Temperature......................................................+150C SET to GND ..............................................................-0.3V to +7V q ...............................................................................+140C/W JA ON to GND ..................................................................-7V to +7V Storage Temperature Range .............................-65C to +150C ON to IN....................................................................-7V to +0.3V Lead Temperature (soldering, 10sec) .............................+300C OUT to GND ................................................-0.3V to (V + 0.3V) IN Continuous Power Dissipation (T = +70C) A SOT23-5 (derate 7.1mW/C above +70C) .................571mW 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 = +3.6V, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) IN A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage V 2.5 6.5 V IN Output Voltage V 0.1mA I 50mA, SET = OUT 1.13 1.25 1.37 V OUT OUT Maximum Output Current 120 mA Current Limit (Note 2) I 280 mA LIM Ground Pin Current I 80 200 A Q T = +25C 0.0001 1 A Off Supply Current I V = V = GND A OFF OUT ON T = +85C 0.02 A ON INPUT ON Input High Threshold V 2.0 V IH ON Input Low Threshold V 0.4 V IL T = +25C 0 100 A ON Input Bias Current I ON = IN nA ON T = +85C 0.05 A SET INPUT T = +25C 0.03 10 A SET Input Leakage Current I V = 1.4V nA SET SET T = +85C 0.5 A THERMAL PROTECTION Thermal Shutdown Temperature T 170 C SHDN Thermal Shutdown Hysteresis T 20 C SHDN Note 1: Limits are 100% production tested at T = +25C. Limits over the operating temperature range are guaranteed through cor- A relation using Statistical Quality Control (SQC) methods. Note 2: Not tested. For design purposes, the current limit should be considered 120mA minimum to 420mA maximum. 2 MAX1749