FP6714S6CTR

FP6714 fitipower integrated technology lnc. 85T High-Efficiency, 1-Cell and 2-Cell Boost Converter Description Features The FP6714 is a high efficiency, fixed frequency 1.0MHz, current mode PWM boost DC/DC converter which could operate from single/dual-cell NiCd, NiMH or alkaline battery such as input voltage below 1V. The converter output voltage can be adjusted from 1.8V to a maximum of 3.8V by an external resistor divider. Besides the converter includes a 0.25Ω N-channel MOSFET switch and 0.35Ω P-channel synchronous rectifier. So no external Schottky diode is required and could get better efficiency near 94%.    The converter is based on a fixed frequency, current mode, pulse-width-modulation PWM controller that goes automatically into PSM mode at light load which quiescent current is only 25μA in this mode operation.      Synchronous Rectification: 94% Efficiency Very Low Start-up Voltage at 0.85V Automatically Switch to PSM Mode for Improving Efficiency at Light Load Internal Anti-Ringing Switch Across Inductor Fixed Frequency Operation at 1.0MHz Very Low Shutdown Current at 1μA Small SOT-23-6 & TSOT-23-6 Packages RoHS Compliant Applications      Handheld Instrument Cordless Phone Wireless Handset GPS Receiver MP3 When converter operation into discontinuous mode, the internal anti-ringing switch will reduce interference and radiated electromagnetic energy. The FP6714 is available in a space-saving SOT-23-6 & TSOT-23-6 packages for portable application. Pin Assignments Ordering Information S6 Package (SOT-23-6) FP6714□□□ VIN VOUT FB 6 5 TR: Tape/Reel C: Green 4 (Marking) 1 2 Package Type S6: SOT-23-6 S9: TSOT-23-6 3 GND EN SW SOT-23-6 Marking S9 Package (TSOT-23-6) VIN VOUT FB 6 5 4 (Marking) 1 SW 2 3 Part Number Product Code FP6714S6C FB3 TSOT-23-6 Marking Part Number Product Code FP6714S9C FL7 GND EN Figure 1. Pin Assignment of FP6714 FP6714-0.3-JUL-2014 1 FP6714 fitipower integrated technology lnc. 85T Typical Application Circuit 4.7μH SW VOUT C2 22μF Ceramic x 1 VIN VIN VOUT R1 FB C1 10μF Ceramic x 1 R2 EN GND Figure 2. Typical Application Circuit of FP6714 Functional Pin Description Pin Name Pin No. EN 3 Chip-enable input. The converter will work when this pin is connected to logic high. when this pin is connected to logic low. FB 4 The feedback input for adjusting output voltage. This pin connects resistor divider that output voltage could be adjusted from 1.8V to 3.8V. The feedback voltage is typical at 0.5V. GND 2 Ground pin VOUT 5 Output voltage pin VIN 6 Input voltage pin SW 1 Switch node pin which is connected to inductor. FP6714-0.3-JUL-2014 Pin Function It will shut off 2 FP6714 fitipower integrated technology lnc. 85T Block Diagram VIN SW PMOS VOUT ANTIRING EN ON/OFF Control NMOS PSM Control Body-Diode Switch Isense/Current Limit Ramp Generator OSC Anti-Reverse Comparator PWM Control Logic FB COMP Error Amp VIN Bandgap Reference GND Figure 3. Block Diagram of FP6714 Absolute Maximum Ratings ● Supply Input Voltage (VIN ,VOUT, EN, FB) --------------------------------------------------------------- -0.3V to +4V ● SW Voltage (SW) ------------------------------------------------------------------------------------------------ -0.3V to +4V ● Power Dissipation @TA=25°C, SOT-23-6/TSOT-23-6 (PD) ------------------------------------------ +0.50W ● Package Thermal Resistance, SOT-23-6/TSOT-23-6 (θJA) ------------------------------------------ +250°C/W ● Maximum Junction Temperature (TJ) ----------------------------------------------------------------------- +150°C ● Storage Temperature Range (TS) --------------------------------------------------------------------------- -65°C to +150°C ● Lead Temperature (Soldering, 10 sec.) (TLEAD) ---------------------------------------------------------- +260°C Note 1：Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. Recommended Operating Conditions ● Input Voltage (VIN) ----------------------------------------------------------------------------------------------- +0.85V to VOUT ● Operating Temperature Range (TOPR) ---------------------------------------------------------------------- -40°C to +85°C FP6714-0.3-JUL-2014 3 FP6714 fitipower integrated technology lnc. 85T Electrical Characteristics (VIN=1.2V, EN=VIN, TA=25°C, unless otherwise specified) Parameter Symbol Conditions Min Typ Max Start-up Voltage VST IOUT=1mA Output Voltage Range VOUT IOUT=1mA Quiescent Current (No Switching) IQ VFB>0.7V 25 Switch Current Limit (Note 2) ILIM VOUT=3.3V 0.75 Feedback Voltage VFB 490 500 510 mV Oscillation Frequency fOSC 800 1000 1250 kHz Maximum Duty Cycle DMAX NMOS Switch ON Resistance (Note 2) PMOS Switch ON Resistance (Note 2) 0.85 Unit 1.8 V 3.8 V 40 µA A 85 % RDS(ON) VOUT=3.3V 0.25 Ω RDS(ON) VOUT=3.3V 0.35 Ω Line Regulation VLINE VIN=1.8V to 2.4V, IOUT=100mA 0.2 % Load Regulation VLOAD VIN=1.8V, IOUT=50~100mA 0.35 % FB Input Bias Current I(FB) EN Input Low Voltage VIL 0.8V