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FAN5346 − Asynchronous Series Boost LED Driver with Analog PWM Dimming Interface
The FAN5346 is an asynchronous constant-current LED driver that drives LEDs in series to ensure equal brightness for all the LEDs. FAN5346S20X has an output voltage of 20V and can drive up to 5 LEDs in series. FAN5346S30X has an output voltage of 30V and up to 8 LEDs in series. Optimized for small form-factor applications, the 1.2MHz fixed switching frequency allows the use of small inductors and capacitors.
The FAN5346 uses a PWM dimming control interface to set the brightness levels of the LEDs. A PWM signal of 5kHz to 100kHz is applied to the EN pin.
For safety, the device features integrated over-voltage, over-current, short-circuit detection, and thermal-shutdown protections. In addition, input under-voltage lockout protection is triggered if the battery voltage is too low.
The FAN5346 is available in a 6-lead SSOT23 package. It is “green” and RoHS compliant.
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Product Status/Pricing/Packaging
| Product | Product & Eco Status | *Pricing | Packaging & Packing Info | **Package Marking Convention | Qualification Support | Compliance Certificates |
|---|---|---|---|---|---|---|
| FAN5346S20X |
Full Production Green as of Mar 2011 |
$0.59 | SSOT 6L Details TAPE REEL |
Line 1:&E (Space) &Y (Binary Calendar Year Coding) Show more... |
ESD (CDM) :
1500
V ESD (HBM) : 1500 V RTHETA (JA) : 151 °C/W Show more... |
|
| FAN5346S30X |
Full Production Green as of Mar 2011 |
$0.65 | SSOT 6L Details TAPE REEL |
Line 1:&E (Space) &Y (Binary Calendar Year Coding) Show more... |
ESD (HBM) :
1500
V RTHETA (JA) : 151 °C/W Moisture Sensitivity Level (MSL) : 1 Show more... |
- Fairchild 1,000 piece Budgetary Pricing. *
- If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
- Top mark packaging information for product FAN5346 is available. **
Features
- Asynchronous Boost Converter
-
Drives LEDs in Series:
- FAN5346S20X: 20V Output
- FAN5346S30X: 30V Output
- 2.5V to 5.5V Input Voltage Range
- PWM Dinning for LED Brightness Control
- 5kHz to 100kHz PWM Dimming Frequency Range
- 1.2MHz Fixed Switching Frequency
- Soft-Start Capability
- Input Under-Voltage Lockout (UVLO)
- Output Over-Voltage Protection (OVP)
- Short-Circuit Detection
- Thermal Shutdown (TSD) Protection
- Small Form-Factor 6-Lead SSOT23 Package
Application Notes
| Application Note | Description |
|---|---|
| AN-9743 | FAN5345 and FAN5346 in LED Applications(190 K) 29-Sep-2011 |
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