ZLED7012 Overview
The ZLED7012, one of our ZLED family of LED control ICs, is a low-noise, constant-frequency charge pump DC/DC converter that can drive up to four LED channels, providing a programmable constant current level ranging from 1.8mA to 20mA per LED channel. It can also drive higher current LEDs because its current sinks can operate in parallel. It enables white or other color LED applications that require uniform...
ZLED7012 Key Features
- Low quiescent current in low-current shutdown mode: 1μA typical; <2μA maximum
- Integrated thermal shutdown protection prevents damage by shutting down the ZLED7012 if the die junction temperature exc
- Fixed charge pump switching frequency: 1MHz (typ.)
- Soft-start feature protects against excessive inrush current during power-on
- Current matching accuracy: ±0.9% (typical)
- One-pin on/off or brightness control for up to four
- 14 programmable current levels for achieving realtime control of effects such as LED fade-out or sudden changes in brigh
- Low EMI and back-injected noise because the charge pump is not inductor-based
- Very few external ponents needed for operation
- Flexible design enables diverse LED
ZLED7012 Applications
- Low quiescent current in low-current shutdown mode: 1μA typical; <2μA maximum
- Integrated thermal shutdown protection prevents damage by shutting down the ZLED7012 if the die junction temperature exceeds 160°C (typical)