特長
- Wide application input voltage range: 5V to 100V (higher voltages also supported as described in section 2.1 in the data sheet)
- Constant current output limited only by external component selection
- No loop compensation required
- Internal over-voltage protection
- Internal over-temperature protection
- Brightness control via PWM or DC voltage control signal input
- SOP-8 package
- High efficiency: up to 95%
- Minimum bill of materials
- Small form-factor package
説明
The ZSLS7025, one of the ZSLS Family of LED control ICs, is a constant current boost converter designed for driving high-brightness LEDs. It is optimal for driving multiple white LEDs connected in series so that the LED current is uniform for better brightness and color control. The wide input range and high output current enables diverse industrial, after-market automotive, and consumer lighting applications. The ZSLS7025 output current is adjustable via an external current sense resistor and can deliver stable constant output current from a few milliamps up to 2A or higher. The ZSLS7025 drives a constant current into the load. The control loop features a pulse frequency modulated (PFM) architecture that is inherently stable and does not need loop compensation. The ZSLS7025 supports pulse-width modulation (PWM) or linear voltage dimming, which allows flexible control of the LED luminance. The ZSLS7025 can operate in applications with a wide input voltage range from 5V to 100V. An integrated over-voltage protection (OVP) circuit protects the system, even under no-load conditions. The over-voltage protection is adjustable via external resistors R1 and R2.
