SEA05LTR Active
Free
Advanced constant voltage and constant current controller with very efficient LED pilot-lamp driver
| Operating Temp Min Celsius | -40.0 |
| Operating Temp Max Celsius | 150.0 |
| ECCN US | EAR99 |
| ECCN EU | NEC |
| Packing Type | Tape And Reel |
| ROHS Compliance Grade | Ecopack2 |
| Grade | Industrial |
| Package Name | SOT23-6L |
|
The device is a highly integrated solution for SMPS applications, with an LED pilot-lamp requiring a dual control loop to perform CV (constant voltage) and CC (constant current) regulation.
The IC allows very efficient LED pilot-lamp driving which helps to reduce the standby consumption of the SMPS. It integrates a voltage reference, two op-amps (with OR-ed open-drain outputs), a low-side current sensing circuit and an LED pilot-lamp driver pin implemented with an open-drain mosfet driven by square waveform with 12.5% duty cycle at 1 kHz that allows reducing LED consumption.
The voltage reference, along with one op-amp, is the core of the voltage control loop. The current sensing circuit and the other op-amp make up the current control loop.
The external components needed to complete the two control loops are:
- a resistor divider that senses the output of the power supply and fixes the voltage regulation setpoint at the specified value
- a sense resistor that feeds the current sensing circuit with a voltage proportional to the DC output current; this resistor determines the current regulation setpoint and must be adequately rated in terms of power dissipation
- the frequency compensation components (R-C networks) for both loops.
The device is ideal for space-critical applications.
In stock:
$0.84
| Range | Unit Price | Savings |
|---|---|---|
| 1 - 9 | $0.84 | 0% |
| 10 - 99 | $0.70 | 17% |
| 100 - 499 | $0.45 | 46% |
| 500 | $0.43 | 49% |
| 500 + | Contact Sales | |