FP6730S6CTR

FP6730 1MHz 2.5A Current-Mode Step-Up DC/DC Converter Description Features The FP6730 is a current-mode, pulse-width modulation, step-up DC/DC converter. The built-in high voltage N-channel MOSFET allows FP6730 for step-up applications with up to 24V output voltage, as well as for Single Ended Primary Inductance Converter (SEPIC).  The high switching frequency (1MHz) allows the use of small external components. The soft-start function is programmable with an external capacitor, which sets the input current ramp rate. Another internal soft-start for SOT-23-5 package. The FP6730 is available in space-saving SOT-23-5, SOT-23-6 and TDFN-6 (2mm×2mm) packages.         Applications    Pin Assignments Fixed Frequency 1MHz Current-Mode PWM Operation Adjustable Output Voltage up to 24V Automatically Switch to PSM Mode for Improving Efficiency at Light Load 3V to 24V Input Range Maximum 1μA Shutdown Current Programmable Soft-start / Internal Soft-start Meet SMD Ceramic Inductor application Space-Saving SOT-23-5, SOT-23-6 and TDFN-6 (2mm×2mm) Packages RoHS Compliant LCD Displays Portable Applications Handheld Devices Ordering Information FP6730□□□ S5 Package: SOT-23-5 IN SHDN 5 4 TR: Tape/Reel C: Green (Marking) 1 2 3 Package Type S5: SOT-23-5 S6: SOT-23-6 WD: TDFN-6 (2mm×2mm) LX GND FB S6 Package: SOT-23-6 SS 6 IN SHDN 5 SOT-23-5 Marking 4 (Marking) 1 2 3 WD Package: TDFN-6 (2mm×2mm) TOP VIEW IN 2 SHDN 3 6 LX GND Product Code FP6730S5CTR FF8 SOT-23-6 Marking LX GND FB GND 1 Part Number 5 SS 4 FB Part Number Product Code FP6730S6CTR FC7 TDFN-6 (2mmx2mm) Marking Part Number Product Code FP6730WDCTR FH8 Figure 1. Pin Assignment of FP6730 FP6730-1.1-DEC-2021 1 FP6730 Typical Application Circuit L VOUT VIN 3.3µH~10µH C1 10µF 1 LX IN 5 COUT 10µF FP6730 2 3 R1 CFF (Option) GND FB SHDN R2 4 Figure 2. Typical Application Circuit (SOT-23-5 Package) L VOUT VIN 3.3µH~10µH C1 10µF 1 LX IN 5 COUT 10µF FP6730 2 3 GND FB SS SHDN R1 CFF (Option) 6 CSS 33nF 4 R2 Figure 3. Typical Application Circuit (SOT-23-6 Package) L VOUT VIN 3.3µH~10µH C1 10µF 6 LX IN 2 CFF (Option) FP6730 1 4 GND FB SS SHDN COUT 10µF R1 5 3 CSS 33nF R2 Figure 4. Typical Application Circuit (TDFN-6 Package) FP6730-1.1-DEC-2021 2 FP6730 Functional Pin Description Pin Name Pin No. (SOT-23-5) Pin No. (SOT-23-6) Pin No. (TDFN-6) Pin Function LX 1 1 6 Switch node pin. Connect LX to the inductor and output rectifier. Connect components as close to LX as possible. GND 2 2 1 Ground. FB 3 3 4 Feedback pin. Connect a resistive voltage-divider from the output to FB to set the output voltage. 4 4 3 IN 5 5 2 SS -- 6 5 Shutdown input. Drive low to turn off the converter. To automatically start the converter, connect to IN. Do not leave unconnected. Internal bias voltage input. Connect IN to the input voltage source. Bypass IN to GND with a 10μF or greater capacitor as close to IN as possible. Soft-start input. Connect a soft-start capacitor from SS to GND to soft-start the converter. Leave SS open to inform internal soft-start function. Block Diagram VIN 4μA SS PWM/PSM Control Soft-Start LX VIN SHDN 0.6V VREF PWM Comparator Control Logic Driver M1 ERROR AMP. M FB RC CC Slope Compensation 1.0MHz Oscillator RS Current AMP GND Figure 5. Block Diagram FP6730-1.1-DEC-2021 3 FP6730 Absolute Maximum Ratings (Note 1) ● LX , Vin to GND ----------------------------------------------------------------------------------------------- +26V ● All Other Pins to GND --------------------------------------------------------------------------------------- +6V ● LX Voltage VLX (15ns) --------------------------------------------------------------------------------------- -6V to VIN+6V ● Power Dissipation @TA=25°C, (PD) SOT-23-5 ------------------------------------------------------------------------------------------- 0.4W SOT-23-6 ------------------------------------------------------------------------------------------- 0.4W TDFN-6 (2mm×2mm)--------------------------------------------------------------------------------------- 1.25W ● Package Thermal Resistance, (θJA) SOT-23-5 ------------------------------------------------------------------------------------------- 250°C/W SOT-23-6 ------------------------------------------------------------------------------------------- 250°C/W TDFN-6 (2mm×2mm)--------------------------------------------------------------------------------------- 80°C/W ● Package Thermal Resistance, (θJC) SOT-23-5 ------------------------------------------------------------------------------------------- 130°C/W SOT-23-6 ------------------------------------------------------------------------------------------- 110°C/W TDFN-6 (2mm×2mm)--------------------------------------------------------------------------------------- 56°C/W ● Junction Temperature (TJ) ---------------------------------------------------------------------------------- +150℃ ● Storage Temperature Range (T S) ------------------------------------------------------------------------ -65℃ to +150℃ ● Lead Temperature (Soldering, 10 sec.) (T LEAD) ------------------------------------------------------- +260℃ Note1: tresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. Recommended Operating Conditions ● Input Voltage (VIN) -------------------------------------------------------------------------------------------- +3V to +24V ● Operating Junction Temperature Range (TOP) -------------------------------------------------------- -40℃ to +85℃ FP6730-1.1-DEC-2021 4 FP6730 Electrical Characteristics (VIN=5V, TA=25 ºC, unless otherwise specified.) Parameter Symbol Input Supply Range Conditions VIN Output Voltage Adjustable Range Min 3 VOUT VFB=0.7V, not switching Quiescent Current 250 Max Unit 24 V 24 V 400 µA IIN VFB=0.6V, switching Shutdown Supply Current Under Voltage Lockout Under Voltage Lockout Hysteresis Thermal Shutdown Typ (Note 2) ISD 1 =0V 0.1 VUVLO Δ UVLO TSD Thermal Shutdown Hysteresis mA 1 µA 2.9 V 0.2 V 150 °C 30 °C Error Amplifier Feedback Regulation Set Point VFB FB Input Bias Current IFB Line Regulation 0.588 0.6 0.612 V 21 80 nA 0.05 1 %/V 800 1000 1200 KHz 90 95 % 0.2  2.5 A VFB=0.6V 3V