DESCRIPTION
Capable of operating efficiently with DC voltage supplies ranging from 2.8V to 5.5V, it is ideal for small, battery-powered applications because very few external components are needed: typically one small-dimension 1μF capacitor across the C+ and C- pins and two small-dimension 2.2μF capacitors to GND from the VCC and Vout pins. The ZLED7012’s Pulse Count Control (PCC) serial digital input is used to enable/disable the LEDs and set the current level (14 settings using a nearly logarithmic scale to provide a linear brightness progression). This simple, high-speed interface allows efficient real-time management of LEDs via microcontrollers or control systems. The ZLED7012’s features include integrated soft-start circuitry to protect against excessive in-rush current during power-on and a low-current shutdown mode that reduces quiescent current consumption to approximately 1μA (typical) by disconnecting the load from the input when the EN/SET pin is low for a specified time.
Renesas Electronics
