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Technical content
Features
Current mode with PWM/PSM control Input voltage range: 2.4V~4.5V Adjustable Output up to 5.3V Shutdown current: <1uA Oscillator frequency: 500KHz Reference voltage: 0.6V +/-2% Disconnect load during shutdown Cycle-by-cycle current limit Low RDS(on): 40mΩ for both high and low side. Protection: OTP , SCP Internal compensation Internal soft-start: 7ms Package: SOP-8L(EP)
Applications
Chargers Handheld Devices Portable Products Power Bank Typical Application Circuit ON/OFF VIN SOP-8L(EP) FP6276 VO GNDEN FB LX VIN VOLX
8 VOUT
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Function Block Diagram Error Amp. Control and Driver Logic FB 0.6V Soft Start GND VDD VDD PWM Comp. LX Current Sense Amp. PGND Bulk Well Switch Oscillator 500KHz Slope Compensation VO EN Shutdown Circuitry OTP VIN UVLO OCP MUX VDD VO VIN Pin Descriptions SOP-8L (EP) LX LX VIN EN VO VO FB GND FP6276 XXx-XXL Top View EP (PGND) Bottom View Name No. I / O Description LX 1 I Power Switch Output LX 2 I Power Switch Output VIN 3 P IC Power Supply EN 4 I Enable Control (Active High) GND 5 P IC Ground FB 6 I Error Amplifier Inverting Input VO 7 O Output Voltage Pin VO 8 O Output Voltage Pin PGND EP P IC Power Ground(Must connect to GND)
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Marking Information SOP-8L(EP) Halogen Free Lot Number Internal ID Per - Half Month Year FP6276 XXx-XXL Halogen Free: Halogen free product indicator Lot Number: Wafer lot number’s last two digits For Example Lot : 123456 XXx-56L Internal ID: Internal Identification Code Per-Half Month: Production period indicator in half month time unit For Example : A → First Half Month of January B → Second Half Month of January C → First Half Month of February D → Second Half Month of February Year: Production year’s last digit
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product.
Ordering Information
Part Number Operating Temperature Package MOQ Description FP6276XR-G1 -40°C ~ 85°C SOP-8L(EP) 2500EA Tape & Reel Absolute Maximum Ratings Parameter Symbol Conditions Min. Typ. Max. Unit Supply Voltage VIN 0 6 V LX Voltage VLX 0 7 V EN,FB,VO Voltage 0 6 V Thermal Resistance (Note1) θJA SOP-8L(EP) +60 °C / W Junction Temperature TJ +150 °C Operating Temperature TOP -40 +85 °C Storage Temperature TST -65 +150 °C Lead Temperature (soldering, 10 sec) +260 °C Note1: θJA is measured in the natural convection at T A=25°C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. IR Re-flow Soldering Curve
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Recommended Operating Conditions Parameter Symbol Conditions Min. Typ. Max. Unit Supply Voltage VIN 2.4 4.5 V Operating Temperature Range TA Ambient Temperature -40 +85 °C Parameter Symbol Conditions Min. Typ. Max. Unit Input Voltage VIN 2.4 4.5 V Under Voltage Lockout VUVLO 2.1 V UVLO Hysteresis 0.1 V Quiescent Current ICC VFB =0.65V, No switching 280 µA Average Supply Current ICC VFB=0.55V, Switching 3.6 mA Shutdown Current ICC VEN=GND 0.1 µA Linear Charge Current ICHARGE VOUT<VIN 3 A Operation Frequency fOSC VFB=0.55V 500 kHZ Maximum Duty Ratio % 90 % Feedback Voltage VREF VIN=4.5V 0.588 0.6 0.612 V Enable Voltage VEN 0.96 V Shutdown Voltage VEN 0.6 V Soft-Start Time tSS VIN=4.5V 7 ms High Side Switch RDS(ON) RON-PMOS 40 mΩ Low Side Switch RDS(ON) RON-NMOS 40 mΩ Switch Current Limit IOCP 6 A Thermal Shutdown Threshold TOTP 150 ℃ Thermal Shutdown Hysteresis 30 ℃
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Typical Operating Characteristics (VCC=3V,Vout=5V ,Iout=2.1A,TA=25℃, unless otherwise specified) 4.9 4.92 4.94 4.96 4.98 2.5 3 3.5 4 4.5 Output Voltage(V) Input Voltage(V) Outptu Voltage VS Input Voltage 4.9 4.92 4.94 4.96 4.98 0 0.5 1 1.5 2 2.5 Output Voltage(V) Output Current(A) Output Voltage VS Output Current 100 0 0.5 1 1.5 2 2.5 Efficiency(%) Output Current(A) Efficiency VS Output Current Vin=4.2V Vin=3.7V Vin=3.3V Vin=3V 0 0.5 1 1.5 2 2.5 Temperature( ℃) Output Current(A) Temperature VS Output Current Vin=4.2V Vin=3.7V Vin=3.3V Vin=3V 450 460 470 480 490 500 2.5 3 3.5 4 4.5 Frequency(kHz) Input Voltage(V) Frequency VS Input Voltage 4.6 4.7 4.8 4.9 5.1 -50 -25 0 25 50 75 100 Output Voltage(V) Temperature( ℃) Output Voltage VS Temperature
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Transient Response (VIN=3.3V，VOUT=5V，IOUT=0.5~2.1A) Output Ripple (VIN=3.3V，VOUT=5V，IOUT=2.1A) EN ON Test (VIN=3.3V，VOUT=5V，IOUT=2.1A) EN OFF Test (VIN=3.3V，VOUT=5V，IOUT=2.1A) Power ON Test (VIN=3.3V，VOUT=5V，IOUT=2.1A) Short Test (VIN=3.3V， IOUT=2.1A)
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Function Description Operation The FP6276 is a current mode synchronous boost converter. The constant switching frequency is 500kHz and operates with pulse width modula tion (PWM). Build-in 40mΩ high side switch and 40mΩ low side switch provides a high efficient conversion. Soft Start Function Soft start circuitry is integrated into FP6276 to avoid inrush current during power on. After the IC is enabled, the output of error amplifier is clamped by the internal soft -start function, which causes PWM pulse width increasing slowly and thus reducing input surge current. Over Temperature Protection (OTP) FP6276 will turn off the power MOSFET automatically when the intern al junction temperature is higher than 150°C. The power MOSFET wake up when the junction temperature drops 30 °C under the OTP threshold temperature.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product.
Application Information
Inductance value is decided based on different condition. 1.5uH to 4.7µH inductor value is recommended for general application circuit. There are three important inductor specifications, DC resistance, saturation current a nd core loss. Low DC resistance has better power efficiency. Also, it avoid inductor saturation which will cause circuit system unstable and lower core loss at 500KHz. Capacitor Selection The output capacitor is required to maintain the VO DC voltage. Lo w ESR capacitors are preferred to reduce the output voltage ripple. Ceramic capacitor of X5R and X7R are recommended, which have low equivalent series resistance (ESR) and wider operation temperature range. Output Voltage Programming The output voltage is set by a resistive voltage divider from the output voltage to FB. The output voltage is: 2R 1R1V6.0VOUT Layout Considerations 1. The power traces, consisting of the GND trace, the LX trace and the VIN trace should be kept short, direct and wide. 2. Layout LX switching node wide and short trace to reduce EMI. 3. Place C1 near VIN pin as closely as possible to maintain input volta ge steady and filter out the pulsing input current. 4. The resistive divider R1 and R2 must be connected to FB pin directly and as closely as possible. 5. FB is a sensitive node. Please keep it away from switching node LX. 6. The GND of the IC, C 1, C3 and C4 should be connected close together directly to a power ground plane.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. GND 1 8 3 6 FP6276 4 5 Vin Vout Suggested Layout
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Typical Application VOUT FP6276 VO GNDEN FB LX VIN VOLX 8VIN 73k 10k L1 3.3µH 22µF 22µF 100µF Close to PGND SOP-8L(EP) Optional Close to PGND R4 C5 ON/OFF 10k 1nF Note: 1. Use ceramic capacitor of X5R or X7R for C1 and C3. 2. R4 and C5 are added for reducing EMI (Electromagnetic Interference). 3. EN voltage must be less than or equal to VIN voltage.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accom pany the sales of the product. Package Outline SOP-8L (EP) Unit: mm Exposed PAD Dimensions: Note: 1. Package dimensions are in compliance with JEDEC outline: MS-012 AA. 2. Dimension ”D” does not include molding flash, protrusions or gate burrs. 3. Dimension “E” does not include inter-lead flash or protrusions. Symbols Min. (mm) Max. (mm) A 1.346 1.752 A1 0.050 0.152 A2 1.498 D 4.800 4.978 E 3.810 3.987 H 5.791 6.197 L 0.406 1.270 θ° 0° 8° Symbols Min. (mm) Max. (mm) D1 3.302 REF E1 2.413 REF