SY8006AAC

SY8006 High Efficiency 1.5MHz, 1.2A Synchronous Step Down LED Driver Preliminary Spec General Description Features The SY8006 is a high-efficiency 1.5MHz synchronous step-down LED driver capable of delivering 1.2A output current. SY8006 operates over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. It also features a 100mV feedback voltage for high efficiency operation. Ordering Information SY8006□ □(□□ □□)□ □□ □ • low Rds(on) for internal switches (top/bottom): 200mΩ/150 mΩ • 2.5-5.5V input voltage range • 1.5MHz switching frequency • Internal softstart limits the inrush current • 5% 100mV reference • 100% dropout operation • SY8006P: LED current OK indicator output • Compact package: SOT23-5 (SY8006), SOT23-6 (SY8006P) Applications Temerature Code C: 0°C~85°C • • • • • Package Code: AA:SOT23-5 AB:SOT23-6 Spec Code Security System Camcorder Digital Camera Emergency lighting Portable Lamp Typical Applications VIN IN EN L CIN VOUT LX GND COUT FB R Figure 1 SY8006Rev.0.2 Silergy Corp. Confidential-For Internal Use 1 SY8006 Pinout (top view) EN 1 GND 2 LX 3 5 4 FB IN EN 1 6 FB GND 2 5 PG LX 3 4 IN SOT23-5 SOT23-6 Pin Description Pin Name EN GND LX IN FB SY8006 SOT23-5 1 2 3 4 5 SY8006P SOT23-6 1 2 3 4 6 PG N/A 5 Pin Description Enable control. Pull high to turn on. Do not float. Ground pin Inductor pin. Connect this pin to the switching node of inductor Input pin. Decouple this pin to GND pin with at least 1uF ceramic cap Output Feedback Pin. Connect this pin to the cathode of the LED and insert the current sense resistor R2 from this point to ground. ILED=0.1V/R2 LED Current OK Indicator. If LED current is below 90% of regulation level, PG is low; open drain otherwise. Absolute Maximum Ratings (Note 1) Supply Input Voltage -------------------------------------------------------------------------------------------- 6V All Other Pins ----------------------------------------------------------------------------------------------------- VIN + 0.6V Power Dissipation, PD @ TA = 25°C SOT-23-5/6------------------------------------------------------------ 0.4W Package Thermal Resistance (Note 2) SOT-23, θ JA ------------------------------------------------------------------------------------------- 250°C/W SOT-23, θ JC ------------------------------------------------------------------------------------------- 130°C/W Junction Temperature Range ----------------------------------------------------------------------------------- 150°C Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------- 260°C Storage Temperature Range ------------------------------------------------------------------------------------ -65°C to 150°C ESD Susceptibility (Note 2) HBM (Human Body Mode) ------------------------------------------------------------------------------------ 2kV MM (Machine Mode) -------------------------------------------------------------------------------------------- 200V Recommended Operating Conditions (Note 3) IN pins ------------------------------------------------------------------------------------------------------------- 2.5V to 5.5V LX pin-------------------------------------------------------------------------------------------------------------- 2.5V to 6V FB, EN pin ---------------------------------------------------------------------------- ---------------------------- 0 to 5.5V Junction Temperature Range ----------------------------------------------------------------------------------- -40°C to 125°C Ambient Temperature Range ----------------------------------------------------------------------------------- -40°C to 85°C SY8006Rev.0.2 Silergy Corp. Confidential-For Internal Use 2 SY8006 Electrical Characteristics (VIN = 3.6V, ILED=0.3A, RLED=6ohm, L = 2.2uH, COUT = 10uF, TA = 25°C, IMAX = 1A unless otherwise specified) Parameter Input Voltage Range Quiescent Current Shutdown Current Feedback Reference Voltage FB Input Current PFET RON NFET RON PFET Current Limit EN rising threshold EN falling threshold Input UVLO threshold UVLO hysteresis Oscillator Frequency Min ON Time Max Duty Cycle Thermal Shutdown Temperature Symbol VIN IQ ISHDN VREF IFB RDS(ON),P RDS(ON),N ISW VENH VENL VUVLO VHYS FOSC Test Conditions Min 2.5 IOUT=0, VFB=VREF+5% EN=0 0.09 VFB=VIN Typ 100 0.1 0.1 -50 Max 5.5 200 1 0.11 Unit V µA µA V 50 nA Ω Ω A V V V V MHz ns % °C 0.2 0.15 2.4 1.5 0.4 2.4 0.1 1.5 50 IOUT=100mA 100 TSD 150 Note 1: Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2: θ JA is measured in the natural convection at TA = 25°C on a low effective single layer thermal conductivity test board of JEDEC 51-3 thermal measurement standard. Pin 2 of SSOT23-6 package is the case position for θ JC measurement. Note 3:The device is not guaranteed to function outside its operating conditions. SY8006Rev.0.2 Silergy Corp. Confidential-For Internal Use 3