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Looking for low-cost LED driver with selectable PWM ramp and blink

Other Parts Discussed in Thread: TPS75105, TL4242, LP5521, LP5560


Would anyone have any suggestions for a very basic LED driver, with current regulation (boost not needed), that generates a selectable PWM on / off slope, and selectable blinking?

I am looking for

  • something low-cost
  • Current in the 20 mA range, voltage in the 3.3 V range preferred
  • either a SOIC, SC70, or similar leaded package, not a BGA or leadless package
  • a minimum number of pins and bare-minimum functionality / complexity
  • I2C or pull-up resistors for mode selection - this will be controlled from an MSP430 (or hard-wired)
  • Programming / mode selection should need no input once set up, and blinking should need no further input
  • Should not need PWM to be fed to it, must generate it internally
  • Fade-in and fade-out ramp options for exponential curve, I don't need linear.
Ideally, is there any TI or National IC similar to the Fairchild FAN5646? The ICs I could find via parametric search are much more complex in functionality, and are in packages not amenable to hand-soldered prototyping. 
Any help appreciated. Thank you.
Warm Regards