1、FP6276 500kHz 6A High Efficiency Synchronous PWM Boost Converter 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 acco
2、mpany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.681/12 General Description The FP6276 is a current mode synchronous boost DC-DC converter with PWM/PSM control. Its PWM circuitry with built-in 40m high side switch and 40m low side switch make this regulator highly power efficien
3、t. The internal compensation network also minimizes external component counts to only 6. An internal 0.6V voltage is connected to error amplifier the non-inverting input as precision reference voltage. Built-in soft-start function can reduce the inrush current. Features Current mode with PWM/PSM con
4、trol Input voltage range: 2.4V4.5V 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 R DS (on): 40m for both high and low side. Protection: OTP, SCP Internal compensation Inte
5、rnal 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 GND EN FB LX VIN VO LX 1 2 3 4 6 5 7 8 VOUTFP6276 This datasheet contains new product information. Feeling Technology reserves the
6、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 accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.682/12 Function Block Diagram Error Amp. Control and Driver Logic FB 0.6V So
7、ft 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 VINPin Descriptions SOP-8L (EP) 1 2 3 4 8 7 6 5 LX LX VIN EN VO VO FB GND FP6276 XXx-XXL Top View EP (PGND) Bottom ViewName No. I / O D
8、escription 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) FP6276 This datashe
9、et 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 accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.683/12
10、Marking Information SOP-8L(EP) Halogen Free Lot Number Internal ID Per - Half Month Year FP6276XXx-XXLHalogen Free: Halogen free product indicator Lot Number: Wafer lot numbers last two digitsFor Example Lot : 123456 XXx-56L Internal ID: Internal Identification Code Per-Half Month: Production period
11、 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 years last digitFP6276 This datasheet contains new product information. Feeling Technology reserves the rights
12、 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 accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.684/12 Ordering Information Part Number Operating Temperature Package MOQ Descript
13、ion FP6276XR-G1 -40C 85 C SOP-8L(EP) 2500EA Tape & Reel Absolute Maximum Ratings Parameter Symbol Conditions Min. Typ. Max. Unit Supply Voltage V IN 0 6 V LX Voltage V LX 0 7 V EN,FB,VO Voltage 0 6 V Thermal Resistance (Note1) JA SOP-8L(EP) +60 C / W Junction Temperature T J +150 C Operating Tempera
14、ture T OP -40 +85 C Storage Temperature T ST -65 +150 C Lead Temperature (soldering, 10 sec) +260 C Note1: JA 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 FP6276 This datas
15、heet 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 accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.685/1
16、2 Recommended Operating Conditions Parameter Symbol Conditions Min. Typ. Max. Unit Supply Voltage VIN 2.4 4.5 V Operating Temperature Range T A Ambient Temperature -40 +85 C DC Electrical Characteristics (V IN =3.3V, T A =25C, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Un
17、it Input Voltage V IN 2.4 4.5 V Under Voltage Lockout V UVLO 2.1 V UVLO Hysteresis 0.1 V Quiescent Current I CC V FB =0.65V, No switching 280 A Average Supply Current I CC V FB=0.55V, Switching 3.6 mA Shutdown Current I CC V EN=GND 0.1 A Linear Charge Current I CHARGE V OUTV IN 3 A Operation Frequen
18、cy f OSC V FB=0.55V 500 kH Z Maximum Duty Ratio % 90 % Feedback Voltage V REF V IN=4.5V 0.588 0.6 0.612 V Enable Voltage V EN 0.96 V Shutdown Voltage V EN 0.6 V Soft-Start Time t SS V IN=4.5V 7 ms High Side Switch R DS(ON) R ON-PMOS 40 m Low Side Switch R DS(ON) R ON-NMOS 40 m Switch Current Limit I
19、 OCP 6 A Thermal Shutdown Threshold T OTP 150 Thermal Shutdown Hysteresis 30 FP6276 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 un
20、der any patent accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.686/12 Typical Operating Characteristics (V CC =3V,Vout=5V ,Iout=2.1A,T A =25 , unless otherwise specified) 4.9 4.92 4.94 4.96 4.98 5 2.5 3 3.5 4 4.5 Output Voltage(V) Input Voltage(V) Outptu Voltage VS Input Vo
21、ltage 4.9 4.92 4.94 4.96 4.98 5 0 0.5 1 1.5 2 2.5 Output Voltage(V) Output Current(A) Output Voltage VS Output Current80 82 84 86 88 90 92 94 96 98 100 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 20 30 40 50 60 70 0 0.5 1 1.5 2 2.5
22、 Temperature( ) Output Current(A) Temperature VS Output Current Vin=4.2V Vin=3.7V Vin=3.3V Vin=3V450 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 5.1 -50 -25 0 25 50 75 100 Output Voltage(V) Temperature( ) Output Voltage VS Temperat
23、ureFP6276 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 accompany the sales of the product. Website: http:/www.feel
24、ing-.tw Rev. 0.687/12 Transient Response (V IN =3.3V ，V OUT =5V ，I OUT =0.52.1A) Output Ripple (V IN =3.3V ， V OUT =5V ， I OUT =2.1A) EN ON Test (V IN =3.3V ，V OUT =5V ，I OUT =2.1A) EN OFF Test (V IN =3.3V ， V OUT =5V ， I OUT =2.1A) Power ON Test (V IN =3.3V ，V OUT =5V ，I OUT =2.1A) Short Test (V IN
25、 =3.3V ， I OUT =2.1A) FP6276 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 accompany the sales of the product. Webs
26、ite: http:/www.feeling-.tw Rev. 0.688/12 Function Description Operation The FP6276 is a current mode synchronous boost converter. The constant switching frequency is 500kHz and operates with pulse width modulation (PWM). Build-in 40m high side switch and 40m low side switch provides a high efficient
27、 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
28、 current. Over Temperature Protection (OTP) FP6276 will turn off the power MOSFET automatically when the internal junction temperature is higher than 150C. The power MOSFET wake up when the junction temperature drops 30C under the OTP threshold temperature. FP6276 This datasheet contains new product
29、 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 accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.689/12 Application Information
30、 Inductor Selection Inductance value is decided based on different condition. 1.5uH to 4.7H inductor value is recommended for general application circuit. There are three important inductor specifications, DC resistance, saturation current and core loss. Low DC resistance has better power efficiency
31、. 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. Low ESR capacitors are preferred to reduce the output voltage ripple. Ceramic capacitor of X5R and X7R are
32、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: 2 R 1 R 1 V 6 . 0 V OUTLayout Considerations 1. The power tr
33、aces, consisting of the GND trace, the LX trace and the V INtrace 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 voltage steady and filter out the pulsing input current. 4. The r
34、esistive 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, C1, C3 and C4 should be connected close together directly to a power ground plane. FP6276 This datasheet contains n
35、ew 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 accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.6810/12 GND 1 8 7 2
36、3 6 FP6276 4 5 Vin Vout C3 C1 R1 L1 R2 C4 R3 C8Suggested Layout FP6276 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 paten
37、t accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.6811/12 Typical Application VOUT FP6276 VO GND EN FB LX VIN VO LX 1 2 3 4 6 5 7 8 VIN R1 73k R2 10k L1 3.3H C1 22F C3 22F C4 100F Close to PGND SOP-8L(EP) Optional Close to PGNDR4 C5 ON/OFF R3 10k C8 1nFNote: 1. Use ceramic
38、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. FP6276 This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification w
39、ithout notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product. Website: http:/www.feeling-.tw Rev. 0.6812/12 Package Outline SOP-8L (EP) Unit: mm Exposed PAD Dimensions: Note: 1. Package dimensions are in compliance with
40、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 0 8 Symbols Min. (mm) Max. (mm) D1 3.302 REF E1 2.413 REF
