MAX1749

Features:

Fixed 1.25V or Adjustable (1.25V to 6.5V) Output
Low Cost
Thermal Overload Protection
Output Current Limit
Reverse Battery Protection
Low 0.1nA Off Supply Current
Low 80µA Full-Load Supply Current


Application

Wireless Handset Vibrator Motor Drivers
Pager Vibrator Motor Drivers


Pinout




Specifications

IN to GND....................................................................-7V to +7V
Output Short-Circuit Duration ..........................................Infinite
SET to GND .............................................................-0.3V to +7V
ON to GND .................................................................-7V to +7V
ON to IN..................................................................-7V to +0.3V
OUT to GND ...............................................-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (TA = +70°C)
SOT23-5 (derate 7.1mW/°C above +70°C) .................571mW
Operating Temperature Range .......................-40°C to +85°C
Junction Temperature....................................................+150°C
JA ...........................................................................+140°C/W
Storage Temperature Range ........................-65°C to +150°C
Lead Temperature (soldering, 10sec) ..........................+300°C


Description

The MAX1749 allows for a constant vibration force while operating from a +2.5V to +6.5V input range and delivering up to 120mA. A PMOS pass transistor allows the 80µA supply current to remain independent of the load.

The output voltage can be adjusted from +1.25V to VIN with an external resistor-divider. When turned off  (ON = low), the MAX1749 supply current drops to 1µA (max) to minimize battery drain. Other features include short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX1749 is available in a 5-pin SOT23 package.