SGM6605-ADJYN6G/TR

SGM6605 90% Efficient Synchronous Step-Up Converter with 1.1A Switch GENERAL DESCRIPTION FEATURES The SGM6605 is a constant frequency, current mode, ● 90% Efficient Synchronous Boost Converter synchronous step-up switching regulator. It can be ● Device Quiescent Current: 30µA (TYP) used for generating 5V at 400mA from a 3.3V rail or a ● Less than 1µA Shutdown Current Li-Ion battery. ● Input Voltage Range: 2.7V to 5.5V High switching frequency minimizes the sizes of ● 5.0V Fixed Output Voltage inductor and capacitor. Integrated power MOSFETs ● Adjustable Output Voltage Up to 5.5V and internal compensation make the SGM6605 simple ● Output Voltage Clamping: 6V to use and fit the total solution into a compact space. ● Power-Save Mode for Improved Efficiency at Low Output Power For light load current, the SGM6605 enters into the power-save mode to maintain high ● Load Disconnect During Shutdown efficiency. ● 1.8V Logic on EN Pin for Control Anti-ringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode. The ● Low Reverse Leakage Current when VOUT > VIN SGM6605 provides true output disconnect and this ● Over-Temperature Protection allows VOUT to go to zero volts during shutdown without ● Available in Green SOT-23-6 Package drawing any current from the input source. The ● -40℃ to +85℃ Operating Temperature Range SGM6605 supports 1.8V logic for control. The output voltage of SGM6605-ADJ can APPLICATIONS be programmed by an external resistor divider, and that of Single-Cell Li Battery Powered Products SGM6605-5.0 is fixed internally on the chip. The device Portable Audio Players is available in the Green SOT-23-6 package. It operates over an ambient temperature range of -40℃ Cellular Phones Personal Medical Products to +85℃. TYPICAL APPLICATION L1 4.7μH 1 6 Power Supply C1 10μF SW VOUT VCC SGM6605 3 5 EN R1 FB C2 10μF Output voltage can be adjusted 4 R2 GND 2 Figure 1. Typical Application Circuit SG Micro Corp www.sg-micro.com FEBRUARY 2018 – REV. A. 3 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 PACKAGE/ORDERING INFORMATION MODEL SGM6605 VOUT (V) PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE ORDERING NUMBER PACKAGE MARKING PACKING OPTION Adjustable SOT-23-6 -40℃ to +85℃ SGM6605-ADJYN6G/TR SI6XX Tape and Reel, 3000 5.0 SOT-23-6 -40℃ to +85℃ SGM6605-5.0YN6G/TR SI8XX Tape and Reel, 3000 NOTE: XX = Date Code. Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly. MARKING INFORMATION SYY X X Date code - Month ("A" = Jan. "B" = Feb. … "L" = Dec.) Date code - Year ("A" = 2010, "B" = 2011 …) Chip I.D. For example: SI6CA (2012, January) ABSOLUTE MAXIMUM RATINGS Input Voltage Range on SW, VOUT, VCC, FB, EN ............................................................................. -0.3V to 6V Package Thermal Resistance SOT-23-6, θJA .......................................................... 150℃/W Junction Temperature .................................................+150℃ Storage Temperature Range ........................ -65℃ to +150℃ Lead Temperature (Soldering, 10s) ............................+260℃ ESD Susceptibility HBM ............................................................................. 4000V MM ................................................................................. 250V RECOMMENDED OPERATING CONDITIONS Operating Temperature Range ....................... -40℃ to +85℃ OVERSTRESS CAUTION Stresses beyond those listed may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. ESD SENSITIVITY CAUTION This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. DISCLAIMER SG Micro Corp reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. SG Micro Corp www.sg-micro.com FEBRUARY 2018 2 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 PIN CONFIGURATION (TOP VIEW) SW 1 6 VCC GND 2 5 VOUT EN 3 4 NC/FB SOT-23-6 PIN DESCRIPTION PIN NAME 1 SW 2 GND 3 EN Enable Input. (1/VCC enabled, 0/GND disabled) NC No Connect. It should be left floating. (SGM6605-5.0) FB Output Voltage Feedback Pin. Voltage feedback for programming the output voltage. (SGM6605-ADJ) 4 5 VOUT 6 VCC FUNCTION Boost and Rectifying Switch Input. Ground. Boost Converter Output. Boost Converter Supply Voltage. SG Micro Corp www.sg-micro.com FEBRUARY 2018 3 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 ELECTRICAL CHARACTERISTICS (Full = -40℃ to +85℃, typical values are at TA = +25℃, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS TEMP MIN VOUT Full Input Voltage Range VIN Feedback Voltage TYP MAX UNITS 3.0 5.5 V +25℃ 2.7 5.5 V DC/DC STAGE Output Voltage Range VFB Full 485 500 519 mV Oscillator Frequency f Full 870 1200 1470 kHz Switch Current Limit ISW Full 0.75 1.1 1.45 A Start-Up Current Limit +25℃ 300 mA Boost Switch-On Resistance VOUT = 5V +25℃ 400 mΩ Rectifying Switch-On Resistance VOUT = 5V +25℃ 530 mΩ Output Voltage Accuracy VCC = 2.7V, IO = 10mA Full Line Regulation VCC = 2.7V to VOUT - 0.5V, IO = 10mA Full 0.5 +25℃ 0.5 Load Regulation Quiescent Current 3.8 % 1 % % VCC VEN = VCC = 2.7V, IO = 0mA Full 0.1 1 VOUT VEN = VCC = 2.7V, IO = 0mA, VOUT = 5V +25℃ 30 55 VEN = 0V, VCC = 2.7V +25℃ Shutdown Current 1 µA µA CONTROL STAGE EN Input Low Voltage VIL Full EN Input High Voltage VIH Full EN Input Current Clamped on GND or VCC 0.4 1.6 V V Full 1 µA Over-Temperature Protection 150 ℃ Over-Temperature Hysteresis 20 ℃ SG Micro Corp www.sg-micro.com FEBRUARY 2018 4 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs. Input Voltage Output Voltage vs. Output Current 100 5.20 IO = 60mA 80 IO = 10mA 70 IO = 5mA 60 50 VOUT = 5.0V 0.9 1.5 VCC = 3.6V VOUT = 5.0V 5.15 Output Voltage (V) Efficiency (%) 90 2.1 2.7 3.3 3.9 4.5 5.0 5.10 5.05 5.00 4.95 4.90 1 Quiescent Current vs. Input Voltage 800 Maximum Output Current (mA) Quiescent Current (μA) 10000 VOUT = 5V 1000 100 2.7 3.0 3.3 3.6 3.9 100 1000 Output Current (mA) Input Voltage (V) 10 10 4.2 4.5 4.8 Input Voltage (V) Maximum Output Current vs. Input Voltage 700 600 500 VOUT = 5.0V 400 300 VOUT = 5.5V 200 100 0 0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4 Input Voltage (V) Efficiency vs. Output Current 100 Efficiency (%) 80 VCC = 4.5V 60 VCC = 4.2V VCC = 3.6V VCC = 2.7V 40 20 0 0.01 VOUT = 5V 0.1 1 10 100 1000 Output Current (mA) SG Micro Corp www.sg-micro.com FEBRUARY 2018 5 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Load Transient Response Line Transient Response VIN AC Coupled IOUT VOUT AC Coupled VIN = 3V to 3.6V, RL = 25Ω, VOUT = 5V VIN = 3.6V, IL = 20mA to 80mA, VOUT = 5V Time (2ms/div) Time (2ms/div) Output Voltage in Continuous Mode Start-Up after Enable AC Coupled 20mV/div 5V/div 2V/div EN 50mV/div 100mV/div VOUT 50mA/div 500mV/div AC Coupled VOUT VOUT VIN = 3.6V, RL = 50Ω, VOUT = 5V 200mA/div IL 200mA/div 5V/div SW IL VIN = 3.6V, RL = 25Ω, VOUT = 5V Time (1μs/div) Time (200μs/div) Output Voltage in Power-Save Mode 50mV/div AC Coupled VOUT 50mA/div IL VIN = 3.6V, RL = 2.5kΩ, VOUT = 5.0V Time (40μs/div) SG Micro Corp www.sg-micro.com FEBRUARY 2018 6 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 TYPICAL APPLICATION CIRCUITS L1 4.7μH 1 6 Power Supply SW VOUT VCC SGM6605 C1 2×4.7μF 3 5 EN C2 10μF R1 FB VCC Boost Output 4 R2 GND 2 Figure 2. Power Supply Solution for Maximum Output Power Operating from a Single or Dual Alkaline Cell L1 4.7μH 1 6 Power Supply SW VOUT VCC SGM6605 C1 4.7μF 3 5 EN C2 10μF R1 FB VCC Boost Output 4 R2 GND 2 Figure 3. Power Supply Solution Having Small Total Solution Size L1 4.7μH 1 6 Power Supply C1 4.7μF SW VOUT 5 C2 10μF VCC SGM6605 3 EN FB GND 2 LED Current Up to 30mA D1 4 R1 Figure 4. Power Supply Solution for Powering White LEDs in Lighting Applications SG Micro Corp www.sg-micro.com FEBRUARY 2018 7 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 TYPICAL APPLICATION CIRCUITS (continued) C3 0.1µF VCC2 ~ 2×VCC Unregulated Auxiliary Output DS1 C4 1µF L1 4.7μH 1 6 Power Supply SW VOUT VCC SGM6605 C1 2×4.7μF 3 5 EN R1 FB VCC Boost Output C2 10μF 4 R2 GND 2 Figure 5. Power Supply Solution with Auxiliary Positive Output Voltage C3 0.1µF L1 4.7μH 1 6 Power Supply C1 2×4.7μF DS1 SW VOUT 3 C4 1µF 5 VCC SGM6605 EN R1 FB VCC2 ~ -VCC Unregulated Auxiliary Output C2 10μF VCC Boost Output 4 R2 GND 2 Figure 6. Power Supply Solution with Auxiliary Negative Output Voltage SG Micro Corp www.sg-micro.com FEBRUARY 2018 8 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 TYPICAL APPLICATION CIRCUITS (continued) L1 4.7μH 1 6 Power Supply C1 10μF SW VOUT 5 C2 10μF VCC SGM6605-5.0 3 NC EN VOUT 5.0V 4 GND 2 Figure 7. Basic Application Circuit for the Fixed Output Versions SG Micro Corp www.sg-micro.com FEBRUARY 2018 9 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 APPLICATION INFORMATION Design Procedure The SGM6605 DC/DC converter is intended for systems powered by dual to triple-cell alkaline, NiCd and NiMH battery with a typical terminal voltage between 2.7V and 5.5V. It can also be used in systems powered by one-cell Li-Ion or Li-Polymer with a typical voltage between 3.0V and 4.2V. Programming Output Voltage In Figure 1, the output voltage of the SGM6605 DC/DC converter can be adjusted with an external resistor divider. The typical value of the voltage at the FB pin is 500mV. The maximum recommended value for the output voltage is 5.5V. R1 and R2 are calculated using Equation 1: R1 = R2 ×（ VOUT VOUT − 1 ）= R2 × ( − 1) VFB 500mV (1) R2 is recommended to be 100kΩ. For example, if an output voltage of 5.5V is needed, a 1MΩ resistor should be chosen for R1. Inductor Selection A boost converter normally requires two main passive components for storing energy during the conversion. A boost inductor and a storage capacitor at the output are required. To select the boost inductor, it is recommended to keep the possible peak inductor current below the current limit threshold of the power switch in the chosen configuration. The highest peak current through the inductor and the switch depends on the output load, the input (VCC), and the output voltage (VOUT). Estimation of the maximum average inductor current is done using Equation 2: IL = IO × VOUT VCC × 0.8 The second parameter for choosing the inductor is the desired current ripple in the inductor. Normally, it is advisable to work with a ripple of less than 20% of the average inductor current. A smaller ripple reduces the magnetic hysteresis losses in the inductor, as well as output voltage ripple and EMI. But in the same way, regulation time rises at load changes. In addition, a larger inductor increases the total system costs. With these parameters, it is possible to calculate the value for the inductor by using Equation 3: L= VCC × ( VOUT − VCC ) ΔIL × f × VOUT (3) Parameter f is the switching frequency and ΔIL is the ripple current in the inductor. In typical applications, a 4.7µH inductance is recommended. The device has been optimized to operate with inductance values between 2.2µH and 10µH. Nevertheless, operation with higher inductance values may be possible in some applications. Detailed stability analysis is then recommended. Care must be taken because load transients and losses in the circuit can lead to higher currents as estimated in Equation 3. Also, the losses in the inductor which include magnetic hysteresis losses and copper losses are a major parameter for total circuit efficiency. Input Capacitor At least a 10µF input capacitor is recommended to improve transient behavior of the regulator and EMI behavior of the total power supply circuit. A ceramic capacitor or a tantalum capacitor with a 100nF ceramic capacitor in parallel, placed close to the IC, is recommended. (2) For example, for an output current of 75mA at 5V, at least an average current of 170mA flows through the inductor at a minimum input voltage of 2.7V. SG Micro Corp www.sg-micro.com FEBRUARY 2018 10 90% Efficient Synchronous Step-Up Converter with 1.1A Switch SGM6605 APPLICATION INFORMATION (continued) Output Capacitor The major parameter necessary to define the output capacitor is the maximum allowed output voltage ripple of the converter. This ripple is determined by two parameters of the capacitor, the capacitance and the ESR. It is possible to calculate the minimum capacitance needed for the defined ripple, supposing that the ESR is zero, by using Equation 4: CMIN = I O × ( VOUT − VCC ) f × ΔV × VOUT (4) Parameter f is the switching frequency and ΔV is the maximum allowed ripple. With a chosen ripple voltage of 10mV, a minimum capacitance of 4.5µF is needed. In this value range, ceramic capacitors are a good choice. The ESR and the additional ripple created are negligible. It is calculated using Equation 5: ΔVESR = IO × RESR (5) The total ripple is the sum of the ripple caused by the capacitance and the ripple caused by the ESR of the capacitor. Additional ripple is caused by load transients. This means that the output capacitor has to completely supply the load during the charging phase of the inductor. The value of the output capacitance depends on the speed of the load transients and the load current during the load change. With the calculated minimum value of 4.5µF and load transient considerations, the recommended output capacitance value is in the range of 4.7μF to 22µF. Care must be taken on capacitance loss caused by derating due to the applied DC voltage and the frequency characteristic of the capacitor. For example, larger form factor capacitors (in 1206 size) have their self resonant frequencies in the same frequency range as the SGM6605 operating frequency. So the effective capacitance of the capacitors used may be significantly lower. Therefore, the recommendation is to use smaller capacitors in parallel instead of one larger capacitor. SG Micro Corp www.sg-micro.com Layout Considerations As for all switching power supplies, the layout is an important step in the design, especially at high-peak currents and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as well as EMI problems. Therefore, use wide and short traces for the main current path and for the power ground tracks. The input capacitor, output capacitor, and the inductor should be placed as close as possible to the IC. Use a common ground node for power ground and a different one for control ground to minimize the effects of ground noise. Connect these ground nodes at any place close to the ground pin of the IC. The feedback divider should be placed as close as possible to the ground pin of the IC. To lay out the control ground, it is recommended to use short traces as well, separated from the power ground traces. This avoids ground shift problems, which can occur due to superimposition of power ground current and control ground current. Thermal Information Implementation of integrated circuits in low-profile and fine-pitch surface-mount packages typically requires special attention to power dissipation. Many system-dependent issues such as thermal coupling, airflow, added heat sinks and convection surfaces, and the presence of other heat-generating components affect the power-dissipation limits of a given component. Three basic approaches performance follow. for enhancing thermal 1. Improving the power dissipation capability of the PCB design. 2. Improving the thermal coupling of the component to the PCB. 3. Introducing airflow in the system. FEBRUARY 2018 11 SGM6605 90% Efficient Synchronous Step-Up Converter with 1.1A Switch REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. FEBRUARY 2018 ‒ REV.A.2 to REV.A.3 Update the Typical Performance Characteristics Efficiency vs. Input Voltage (VOUT = 5.0V) ............................................................................................................................................................ 5 DECEMBER 2013 ‒ REV.A.1 to REV.A.2 Update the Electrical Characteristics Switch Current Limit ............................................................................................................................................................................................ 4 JUNE 2013 ‒ REV.A to REV.A.1 Update the Typical Performance Characteristics Efficiency vs. Output Current and Output Voltage vs. Output Current .................................................................................................................. 6 Changes from Original (JANUARY 2013) to REV.A Changed from product preview to production data ............................................................................................................................................. All SG Micro Corp www.sg-micro.com FEBRUARY 2018 12 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS SOT-23-6 D e1 e 2.59 E E1 0.99 b 0.95 0.69 RECOMMENDED LAND PATTERN (Unit: mm) L A A1 θ A2 Symbol Dimensions In Millimeters MIN MAX c 0.2 Dimensions In Inches MIN MAX A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950 BSC 0.037 BSC e1 1.900 BSC 0.075 BSC SG Micro Corp www.sg-micro.com L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° TX00034.000 PACKAGE INFORMATION TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P2 W P0 Q1 Q2 Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 Q3 Q4 B0 Reel Diameter A0 P1 K0 Reel Width (W1) DIRECTION OF FEED NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Reel Diameter Reel Width W1 (mm) A0 (mm) B0 (mm) K0 (mm) P0 (mm) P1 (mm) P2 (mm) W (mm) Pin1 Quadrant SOT-23-6 7″ 9.5 3.17 3.23 1.37 4.0 4.0 2.0 8.0 Q3 SG Micro Corp www.sg-micro.com TX10000.000 DD0001 Package Type PACKAGE INFORMATION CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF CARTON BOX Length (mm) Width (mm) Height (mm) Pizza/Carton 7″ (Option) 368 227 224 8 7″ 442 410 224 18 SG Micro Corp www.sg-micro.com DD0002 Reel Type TX20000.000