MAX1749

SOT23 Vibrator Motor Driver

Allows Constant Vibration Force over the Battery Voltage Range


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 remail 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.
MAX1749: Typical Operating Circuit MAX1749: Typical Operating Circuit Enlarge+

Key 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

Applications/Uses

  • Pager Vibrator Motor Drivers
  • Wireless Handset Vibrator Motor Drivers
Part Number Regulators VIN
(V)
VIN
(V)
Preset VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
VDROPOUT @Rated ILOAD
(V)
Rated ILOAD
(mA)
Rated ILOAD
(mA)
ICC
(µA)
Low Batt./ Pwr. Fail Out Watchdog Reverse Batt. Protect. Oper. Temp.
(°C)
Package/Pins Budgetary
Price
min max min max typ max See Notes
MAX1749  1 2.5 6.5 1.25 1.25 6.5 0.13 120 120 200 No No Yes -40 to +85
SOT/5
$1.41 @1k
See All Linear Regulators (140)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 1014 Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager

Quality and Environmental Data

Product Reliability Reports: MAX1749.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Topmark Coding MAX1749

Related Resources