This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: October 31, 2011.
Recommended Substitutions: For existing customer transition, and for new customers or new applications, contact Allegro Sales.
The A8435 high efficiency charge pump IC offer a simple, low-cost white LED driver solution for portable electronics display applications. Using a proprietary control scheme (1, 1.5), the A8435 can output well-matched currents for up to 4 LEDs, while maintaining the highest efficiency over most of the Li-ion battery lifetime.
The A8435 accepts an input range of 2.7 to 5.5 V and delivers up to 30 mA for each of the four regulated current sources. The A8435 can deliver a total output current of 120 mA, meeting the requirements of most Li-ion battery-powered white LED backlight applications. Outputs can also be tied together for WLED flash/torch applications.
The A8435 offers flexible options for LED current driving. The LED current can be set by any of the following methods: (a) choosing an appropriate value for RSET, (b) 2-bit parallel control with 3 levels, (c) PWM control, or (d) serial programming.
The A8435 is available in a very thin profile 0.75 mm (nominal height) 3 3 mm MLP-16 package (ES), fitting the needs of space-conscious applications.
Evaluation tool and reference design are available for this device. For more information contact: Allegro Marketing
|Part Number||Package Type||Temperature||RoHS
|Part Composition /
|A8435EES-T||16-lead QFN||-40°C to 85°C||--||View Data||Discontinued||Contact your
local sales rep
|A8435EESTR-T||16-lead QFN||-40°C to 85°C||Yes||View Data||Discontinued||Contact your
local sales rep
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.