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Technical content
Features
Wide Supply Voltage Operating Range: 3.6 to 20V Built-in N-MOSFET for 2A Loading Capability Precision Feedback Reference Voltage: 0.5V (2%) Internal Fixed Oscillator Frequency: 320KHz (Typ.) Low Current Consumption: 3mA Programmable Soft-Start Function (SS) Short Circuit Shutdown and Auto Re-start Function(ARSCP) O u t p u t A d j u s t a b l e t o 2 0 V Over Current Protection Package: SOP-8L Typical Application
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. VCC SS / SCP FB COMP LX LX GND GND FP6201 9Fa-86L Top View Function Block Diagram 1.25V Output Drive Control Circuits Soft Start Auto Re-start S.C.P. Circuits Reference Regulator Oscillator VCC FB 0.5V 50 0Ω 36 KΩ COMP GND GND SS / SCP 0.7V LX LX Thermal Shuntdown Pin Descriptions SOP-8L Name No. I / O Description VCC 1 P IC Power Supply SS / SCP 2 I Connecting with a Soft-start & ARSCP Timing Capacitor FB 3 I Error Amplifier Inverting Input COMP 4 O Error Amplifier Compensation Output GND 5 P IC Ground GND 6 P IC Ground LX 7 O Switch Output LX 8 O Switch Output
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Marking Information SOP-8L Halogen Free Lot Number Per-Half Month Year FP6201 Internal ID Halogen Free: Halogen free product indicator Lot Number: Wafer lot number’s last two digits For Example: 132386TB 86 Internal ID: Internal Identification Code Per-Half Month: Production period indicated in half month time unit For Example: January → A (Front Half Month), B (Last Half Month) February → C (Front Half Month), D (Last Half Month) Year: Production year’s last digit
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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.
Ordering Information
Part Number Operating Temperature Package MOQ Description FP6201DR-LF -40°C ~ +85°C SOP-8L 2500EA Tape & Reel Absolute Maximum Ratings Parameter Symbol Conditions Min. Typ. Max. Unit Power Supply Voltage V CC +20 V NMOS Drain Sink Current +3 A LX to GND V LX 20 V Error Amplifier Inverting Input V FB -0.3 1.2 V Allowable Dissipation (SOP-8L ) TA≦+25℃ 650 mW Thermal Resistance Junction to Ambient θJA +175 °C / W Thermal Resistance Junction to Case θJC +55 ℃ / W Storage Temperature T S -55 +125 ℃ ESD Susceptibility HBM (Human Body Mode) 2 KV MM (Machine Mode) 200 V Lead Temperature (soldering, 10 sec) +260 ℃ IR Re-flow Soldering Curve
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Recommended Operating Conditions Parameter Symbol Conditions Min. Typ. Max. Unit Supply Voltage V cc 3.6 +20 V Operating Temperature -10 +85 ℃ Parameter Symbol Test Conditions Min. Typ. Max. Unit Reference Output Voltage V REF COMP connected to FB 0.490 0.5 0.510 V Input Regulation V △ REF VCC＝3.0 V to 20 V 2 12.5 mV Output Voltage Change with Temperature V△ REF / VREF TA＝-10℃ to 25℃ 1 2 TA＝ 25 ℃ to 85℃ 1 2 Soft Start Section (S.S.) S.S. Source Current I SS V SS= 0V -15 -10 -7 μA Soft Start Threshold Voltage V SST 0.8 0.9 1.0 V Short Circuit Protection Section (S.C.P.) S.C.P. Source Current I SCP V SCP= 0V -15 -10 -7 μA SCP re-start / Hold Time TRS / THOLD VCOMP >0.8V 1 / 10 S.C.P. Threshold Voltage VSCP V comp > 450mV 0.9 1.0 1.1 V VSB V comp < 450mV 0.1 0.15 Oscillator Section Oscillation Frequency f 320 KHz Frequency Change with Voltage Δf / ΔV V CC=4V to 15V 5 % Frequency Change with Temperature Δf / ΔT TA =-10℃ to +85℃ 5 % Thermal Shutdown Section Thermal Shutdown Temperature +145 ℃ Error Amplifier Section Input Bias Current I B -1.0 -0.2 1.0 μA Voltage Gain Av 100 V / V Frequency Bandwidth BW Av=0 dB 6 MHz Output Voltage Swing ( Positive) V POS V FB=0.3V 0.78 0.87 V Output Voltage Swing ( Negative) V NEG V FB=0.7V 0.05 0.2 V Output Source Current I SOURCE V comp=500mV -30 -45 μA Output Sink Current I SINK V comp=500mV 30 45 μA Idle Period Adjustment Section Maximum Duty Cycle T DUTY V FB =0.2V 88 % Total Device Section Average Supply Current I AVE 3.8 7 mA
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Parameter Symbol Test Conditions Min. Typ. Max. Unit Output Section NMOS D-S Voltage V DSS 60 V NMOS Source Current I D -2 A NMOS on Resistance R DS (ON) VCC=4.5V, V FB=0V 49 64 mΩ VCC=10V, V FB=0V 33 41 Output Leakage Current I L SCP Active 5 μA Over Current Protection Section NMOS OCP Current I OCP 3 A
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Typical Operating Characteristics (VIN=7V, TA=25°C , unless otherwise noted) Power Supply Voltage VS Reference Output Voltage 0.497 0.498 0.499 0.5 0.501 0.502 0.503 0.504 0.505 0.506 3 . 661 01 21 51 72 0 Powe r S uppl y Vol ta g e (V) Reference Output Voltage (V) Reference Output Votlage VS Temperature 0.498 0.499 0.5 0.501 0.502 0.503 0.504 0.505 0.506 0.507 Tem perature (℃ ) Reference Output Voltage (V) F i g u r e 1 F i g u r e 2 Oscillator Frequency VS Power Supply Voltage 290 294 298 302 306 310 314 318 322 326 330 3.6 6 10 12 15 17 20 Power Supply Voltage (V) Oscillator Frequency (KHz) Osci l l at or Fr equency VS Temper at ur e 280 286 292 298 304 310 316 322 328 334 340 Tem per atur e ( ℃ ) Oscillator Frequency (KHz) F i g u r e 3 F i g u r e 4 Outupt Load R egulation 10.5 11.5 12.5 13.5 14.5 15.5 16.5 Output Current (A) Output Voltage (V) Effciency VS Output Current 83.00% 84.00% 85.00% 86.00% 87.00% 88.00% 89.00% 90.00% 91.00% 92.00% 93.00% 94.00% 95.00% Output Current (A) Effciency (%) F i g u r e 5 F i g u r e 6 Power Supply VS OCP 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 5 5.5 7 9 12 15 18 20 Power Supply (V) OCP (A) OCP VS Tem pature 1.2 1.4 1.6 1.8 2.2 2.4 2.6 2.8 3.2 3.4 3.6 3.8 4.2 4.4 - 1 0 2 55 07 08 5 Te mp a t u r e (℃ ) OCP (A) F i g u r e 7 F i g u r e 8 VCC=10V,VOUT=3.3V VCC=10V,VOUT=5.0V
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Timing Waveform OSC VSST S.S / ARSCP Soft Start Stage 3.6V VCC LX COMP 0.8V VARSCP ARSCP Charge Current Hold Stage Soft Start StageTre Restart Timing Restart Timing VARSCP ARSCP Charge Current Hold Stage Tre ARSCP LX OSC
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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.
Application Information
The FP6201 includes a 1.25V reference voltage generator. This voltage is connected to a resistive divider to generate a 0.5V precision reference voltage to the non-inverting input of error amplifier and 1.0V to the SCP comparator. Error Amplifier The error amplifier compares a sample of the DC-DC converter’s output voltage with the 0.5V (VREF) reference and generates an error signal fo r the PWM comparator. Output voltage of DC-DC converter is setting by the resistor divider with the following equation (figure 9): REFOUT V2R 1R1V 0.5V 36KO 500O VOUT T FP6201 Error Amplifier Figure 9 Error Amplifier with Feedback Resistance Divider
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Oscillator The fixed PWM frequency is generated by an internal RC oscillator. Its typical value is 320KHz. The soft start is enabled after power on. The interval of soft start time is determined by a capacitor connected to SCP pin. After the soft start finished, the internal soft start clamp voltage is setting high, but the external SCP pin is discharged to low. Thus FP6201 turns on short circuit detection / protection function. The time of soft start is: )F(C07.0)ms(Tss When a heavy loading or short circuit condition make output voltage to drop too much, the error amplifier output will rise to very high. Once COMP pin voltage exceeds VPOS (typ. 1.0V), the short circuit protection function is triggered. The output switching MOS will be turned off. The SCP capacitor will be charged until it potential exceeds SCP threshold voltage (typ. 1.2V) and then discharged to ground. The time of short circuit protection is: )F(C09.0Isource CVV I CVT SCPSCPStartSSTHSCP Restart timing of short circuit protection is: Thermal Protection When a heavy loading makes chip internal temperature exceeds 145 °C, the thermal protection function is triggered. The FP6201 turn s off its output and starts Short Ci rcuit Protection function. After the IC internal temperature is cooled down to below 145 °C, it will turn on the output and execute Soft-Start function again. Over Current Protection When FP6201 senses driver current larger than 3A, it will initiate OCP function and enters ARSCP function. After current drops below 3A, FP6201 turns on the output and continues PWM operation.
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Typical Application FP6201 Basic DC-DC Regulator Circuit For example: The VIN power supply is 5.0V and the VOUT is designed for 12V / 0.5A solution. The output voltage equation is: 12.02V0.5V2.43KΩ 56KΩ1VR R1V FB 1OUT
This datasheet contains new product information. Feeling Technology reserves the ri ghts 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. Package Outline SOP-8L U N I T : m m Note: 1. Package dimensions are in compli ance with JEDEC outline: MS-012 AA. 2. Dimension “D” does not include moldi ng 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 0.101 0.254 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°