SY8009AAAC

SY8009A/SY8009B High Efficiency 1.5MHz/1MHz, 1.5A/2A Synchronous Step Down Regulator General Description Features The SY8009A and SY8009B are high-efficiency, high frequency synchronous step-down DC-DC regulator ICs capable of delivering up to 1.5A/2A output currents. The SY8009 family operate over a wide input voltage range from 3V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. • Low RDS(ON) for internal switches (top/bottom) • SY8009A: 180mΩ/120mΩ, 1.5A, SOT23-5 • SY8009B:100mΩ/80mΩ,2.0A SOT23-6, SSOT23-6 • 3-5.5V input voltage range • High switching frequency minimizes the external components • SY8009A: 1.5MHz • SY8009B: 1MHz • Internal softstart limits the inrush current • 100% dropout operation • RoHS Compliant and Halogen Free • Compact package: SOT23-5, SOT23-6 and Super SOT23-6 are pin-compatible. Other packages are available upon requests Low output voltage ripple and small external inductor and capacitor sizes are achieved with greater than 1MHz switching frequency. Ordering Information SY8009□(□□)□ Temperature Code Package Code Optional Spec Code Applications • • • • • Temperature Range: -40°C to 85°C Ordering Number SY8009AAAC SY8009BABC SY8009BEBC Note① 1.5A 2A 2A Package type SOT23-5 SOT23-6 SSOT23-6 LCD TV Set Top Box Net PC Mini-Notebook PC Access Point Router Typical Applications 96 VOUT=1.8V 94 ON/ OFF L VIN VOUT LX IN R1 CIN GND C1(opt.) COUT FB R2 Efficiency (%) 92 EN 90 88 86 82 80 Figure 1.Schematic diagram SY8009A/B Rev1.0 VIN=3.3V VIN=4.2V VIN=5.5V 84 0 0.4 0.8 1.2 1.6 2 Load Current (A) Figure 2. Efficiency vs Load Current Silergy Corp. Confidential- Prepared for Customer Use Only 1 SY8009A/SY8009B Pinout (top view) EN 1 6 FB GND 2 5 NC LX 3 SOT23-5(SY8009A) Pin Name EN GND LX IN FB SOT23-6(SY8009B) 4 IN SSOT23-6(SY8009B) Part Number Package type Top Mark① SY8009AAAC SOT23-5 ADxyz SY8009BABC SOT23-6 CUxyz SY8009BEBC SSOT23-6 ASxyz Note① ： x=year code, y=week code, z= lot number code. Pin Number Pin Description 1 Enable control. Pull high to turn on. Do not float. 2 Ground pin 3 Inductor pin. Connect this pin to the switching node of inductor. 4 Input pin. Decouple this pin to GND pin with at least 1uF ceramic cap. 6 Output Feedback Pin. Connect this pin to the center point of the output resistor divider (as shown in Figure 1) to program the output voltage: Vout=0.6*(1+R1/R2). Absolute Maximum Ratings (Note 1) Supply Input Voltage ------------------------------------------------------------------------------------------ 6.0V Enable, FB Voltage--------------------------------------------------------------------------------------------- VIN + 0.6V Power Dissipation, PD @ TA = 25°C, SOT23-5, SOT23-6, SSOT23-6 -------------------------------------------------------------------- 0.6W Package Thermal Resistance (Note 2) SOT23-5, SOT23-6, SSOT23-6, θ JA -------------------------------------------------------------- 170°C/W SOT23-5, SOT23-6, SSOT23-6, θ JC ---------------------------------------------------------------130°C/W Junction Temperature Range ----------------------------------------- -----------------------------------------125°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 Dynamic LX voltage in 50ns duration --------------------------------------------------------------------- IN+3V to GND-4V Recommended Operating Conditions (Note 3) Supply Input Voltage ------------------------------------------------------------------------------------------3V to 5.5V Junction Temperature Range -------------------------------------------------------------------------------- -40°C to 125°C Ambient Temperature Range -------------------------------------------------------------------------------- -40°C to 85°C SY8009A/B Rev1.0 Silergy Corp. Confidential- Prepared for Customer Use Only 2 SY8009A/SY8009B Electrical Characteristics (VIN = 5V, VOUT = 2.5V, L = 2.2uH, COUT = 10uF, TA = 25°C, unless otherwise specified) Parameter Input Voltage Range Quiescent Current Shutdown Current Feedback Reference Voltage FB Input Current PFET RON Symbol VIN IQ ISHDN VREF IFB RDS(ON),P NFET RON RDS(ON),N PFET Current Limit ILIM EN rising threshold EN falling threshold Input UVLO threshold UVLO hysteresis Oscillator Frequency VENH VENL VUVLO VHYS FOSC Min ON Time Max Duty Cycle Thermal Shutdown Temperature Test Conditions IOUT=0, VFB=VREF ⋅ 105% EN=0 VFB=VIN SY8009A SY8009B SY8009A SY8009B SY8009A SY8009B Min 3 0.588 -50 Typ 80 0.1 0.6 Max 5.5 1 0.612 50 180 100 120 80 1.8 2.5 1.5 0.4 2.7 0.1 1.5 1 50 IOUT=200mA, SY8009A IOUT=500mA, SY8009B 100 TSD 160 Unit V µA µA V nA mΩ mΩ mΩ mΩ A A V V V V MHz MHz ns % °C 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 SOT23-5/SSOT-23-6 packages is the case position for θ JC measurement. Test condition: Device mounted on 2” x 2” FR-4 substrate PCB, 2oz copper, with minimum recommended pad on top layer and thermal vias to bottom layer ground plane Note 3: The device is not guaranteed to function outside its operating conditions. SY8009A/B Rev1.0 Silergy Corp. Confidential- Prepared for Customer Use Only 3 SY8009A/SY8009B SOT23-5 Package outline & PCB layout design 0.55 1.50 - 1.70 0.80 2.70 - 3.00 2.40 2.80 - 3.10 0.95 TYP 0.30 - 0.50 0.01 - 0.1 0.1 - 0.15 0.25 REF Recommended Pad Layout 1.0 - 1.3 0.95 TYP 0.3 - 0.6 1.90 TYP Notes: All dimensions are in millimeters. All dimensions don’t include mold flash & metal burr. SY8009A/B Rev1.0 Silergy Corp. Confidential- Prepared for Customer Use Only 4 SY8009A/SY8009B SOT23-6 Package outline & PCB layout design 1.90 1.50 - 1.70 1.00 2.70 - 3.00 2.40 2.80 - 3.10 0.95 0.60 0.30 - 0.50 0.01 - 0.1 0.1 - 0.15 0.25 REF Recommended Pad Layout 1.0 - 1.3 0.95 TYP 0.3 - 0.6 1.90 TYP Notes: All dimensions are in millimeters. All dimensions don’t include mold flash & metal burr. SY8009A/B Rev1.0 Silergy Corp. Confidential- Prepared for Customer Use Only 5 SY8009A/SY8009B SSOT23-6 Package outline & PCB layout design 1.00 2.40 2.30 - 2.50 2.50 - 3.00 1.90 0.95 0.25 - 0.40 0.60 Recommended Pad Layout 0.10 - 0.20 0.90 - 1.00 0.01 - 0.10 2.95 - 3.10 0.30 - 0.60 0.95 TYP Notes: All dimensions are in millimeters. All dimensions don’t include mold flash & metal burr. SY8009A/B Rev1.0 Silergy Corp. Confidential- Prepared for Customer Use Only 6