FP6186AS5

FP6186A 600mA Low Noise LDO with Adjustable Output Function Description Features The FP6186A is a family of CMOS low dropout (LDO) regulators with a low dropout voltage of 400mV at 600mA designed for noise-sensitive portable device, RF and wireless applications. Quiescent current of FP6186A is as low as 60μA and it works with low-ESR ceramic capacitors, which makes it very suitable for space sensitive handheld applications. The soft-start function will eliminate current surges during start-up and the output discharge function will dissipate the residue output voltage in the capacitor during shut-down.   Other features include current limit, thermal protection, high output accuracy, and low noise output etc.. The FP6186A is available in a SOT-23-5 package.         Low VIN and Wide VIN Range: 1.7V to 5.5V Adjustable Output Voltage Range is from 0.8V to 5V, VOUT Accuracy ±1.25% 600mA Output Current Ripple Rejection 75dB at 1kHz Low Output Noise, 50μVrms from 10Hz to 100kHz Quiescent Current as Low as 60μA Current Limit Protection Thermal Shutdown Protection 1µF Output Capacitor Required for Stability RoHS Compliant Applications   PDAs, Mobile phones, GPS, Smartphones Wireless Handsets, Wireless LAN, Bluetooth® , Zigbee®  Portable Medical Equipment  Other Battery Powered Applications Pin Assignments Ordering Information S5 Package: SOT-23-5 FP6186A□ VOUT FB 5 4 1 2 3 VIN GND EN Figure 1. Pin Assignments of FP6186A FP6186A-0.5-JUN-2021 Package Type S5: SOT-23-5 SOT-23-5 Marking Part Number Product Code FP6186AS5 GA8 1 FP6186A Typical Application Circuit VIN VIN CIN 1µF/X7R Chip Enable VOUT VOUT FP6186A R1 COUT 1µF/X7R FB EN GND R2 Figure 2. Typical Application Circuit for FP6186A Adjustable Voltage Note 1: To prevent oscillation, it is recommended to use minimum 1µF X7R or X5R dielectric capacitors if ceramics are used as input/output capacitors. Functional Pin Description Pin Name Pin No. VIN 1 Supply voltage. GND 2 Ground. EN 3 Chip enable control input. Pull the pin high to enable IC, and pull low or keep it floating to disable the device. FB 4 Feedback voltage pin. VOUT 5 LDO output. FP6186A-0.5-JUN-2021 Pin Function 2 FP6186A Block Diagram RSEN VIN PMOS VOUT Current Limit Power Shutdown EN IEN _ Error Amp + FB Thermal Shutdown Vref GND Figure 3. Block Diagram of FP6186A Absolute Maximum Ratings (Note 2) ● VIN, EN, FB to GND -------------------------------------------------------------------------------------------- -0.3V to +6V -----------------------------------------------------------------------------● VOUT Voltage ----------------------------------------------------------------------------------------------------0.3V to VIN+0.3V -----------------------------------------------------------------------------● Power Dissipation @25°C, (P ) ----------------------------------------------------------------------------- 0.4W D ● Package Thermal Resistance, (θJA) ------------------------------------------------------------------------ 250°C/W ● Package Thermal Resistance, (θJC) ------------------------------------------------------------------------ 130°C/W ●Junction Temperature ------------------------------------------------------------------------------------------- -40°C to +150°C ● Storage Temperature Range (TSTG) ------------------------------------------------------------------------ -65°C to +150°C ● Lead Temperature (Soldering, 10sec) --------------------------------------------------------------------- +260°C Note 2: Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. Recommended Operating Conditions ● Supply Voltage (VIN ) ------------------------------------------------------------------------------------------- +1.7V to +5.5V ● Output Current (IOUT) ------------------------------------------------------------------------------------------- 600mA ● Operating Temperature Range ------------------------------------------------------------------------------ -40°C to +85°C FP6186A-0.5-JUN-2021 3 FP6186A Electrical Characteristics (VIN = VOUT+1V, VEN = VIN, CIN = 1µF, COUT = 1µF, TA = 25°C, unless otherwise specified.) Parameter Symbol Input Voltage Range Conditions VIN Output Voltage Accuracy Quiescent Current ΔVOUT IQ IOUT = 10mA Min Max Unit 1.7 5.5 V -1.25 +1.25 % 60 0.1 1 μA 0.8 0.81 V ISTBY VEN=0V Feedback Reference VFB IOUT = 10mA 0.79 Current Limit ILIM RLOAD=0Ω, 2.2V≦VIN≦5.5V 0.8 (Note 3) Line Regulation Load Regulation (Note 4) VDROP μA VEN=5V, IOUT=0A Standby Current Dropout Voltage Typ. A VOUT =0.9V 1000 1100 VOUT =1.2V 900 1000 VOUT =1.5V 800 900 VOUT =1.8V 580 760 VOUT =2.5V 520 680 VOUT =2.7V 480 620 VOUT =3.0V 440 580 VOUT =3.3V 400 520 IOUT=600mA mV ΔVLINE IOUT=1mA, VIN=VOUT +1V to 5V 1 8 mV ΔVLOAD IOUT =0 ~ 600mA 6 30 mV VEN(ON) Start-up VEN(OFF) Shutdown 1 EN Threshold V Enable Pin Current Output Noise Voltage IEN (Note 5) Output Discharge Resistance 0.4 0.3 μA VON COUT=1μF, IOUT=0A 50 μVRMS RDIS VEN=0V 60 Ω 75 dB VIN=VOUT+1VDC+0.2VP-P(AC), Ripple Rejection (Note 5) PSRR fRIPPLE=1KHz,VOUT=1.2V, IOUT=30mA FP6186A-0.5-JUN-2021 4 FP6186A Electrical Characteristics (Continued) (VIN = VOUT+1V, VEN = VIN, CIN = 1µF, COUT = 1µF, TA = 25°C, unless otherwise specified.) Parameter Symbol Thermal Shutdown Threshold TSD (Note 5) Conditions Min Typ. Max Unit 145 °C ΔTSD Hysteresis 25 Note 3: The dropout voltage is defined as VIN-VOUT, which is measured when VOUT drops 2% of its normal value with the specified output current. Note 4: Load regulation and dropout voltage are measured at a constant junction temperature by using a 40ms low duty cycle current pulse. Note 5: Guarantee by design. FP6186A-0.5-JUN-2021 5 FP6186A Typical Performance Curves VIN=VOUT+1, EN Pin connected to VIN, CIN=1μF, COUT=1μF, TA=+25°C, unless otherwise specified. VIN=4.3V, VOUT=3.3V, IOUT=0mA VIN=4.3V, VOUT=3.3V, IOUT=600mA VEN 5V/div VEN 5V/div VOUT 2V/div VOUT 2V/div IIN IIN 50mA/div 500mA/div 400us/div 400us/div Figure 4. Turn ON Waveform Figure 5. Turn ON Waveform VIN=4.3V, VOUT=3.3V, IOUT=0mA VIN=4.3V, VOUT=3.3V, IOUT=600mA VEN VEN 5V/div 5V/div VOUT 2V/div VOUT 2V/div IIN 50mA/div IIN 500mV/div 400us/div 20us/div Figure 6. Turn OFF Waveform Figure 7. Turn OFF Waveform VIN=3.5V→5.0V→3.5V, VOUT=3.3V/10mA, CIN=none VIN=4.3V, VOUT=3.3V, IOUT=0mA600mA0mA VOUT 20mV/div VIN 1V/div VOUT 50mV/div IOUT 200mV/div 100us /div Figure 8. Line Transient Response FP6186A-0.5-JUN-2021 200us /div Figure 9. Load Transient Response 6 FP6186A Typical Performance Curves (Continued) VIN=VOUT+1, EN Pin connected to VIN, CIN=1μF, COUT=1μF, TA=+25°C, unless otherwise specified. VOUT=1.2V, IOUT=30mA VOUT=3.3V, IOUT=30mA Figure 10. PSRR vs. Frequency Figure 11. PSRR vs. Frequency VIN=4.3V, VOUT=3.3V, IOUT=600mA VIN=4.3V, VOUT=3.3V, IOUT=600mA 350 3.40 3.39 Output Voltage (V) Dropout Voltage (mV) 300 250 200 150 100 3.38 3.37 3.36 3.35 3.34 3.33 3.32 50 3.31 0 3.30 0 100 200 300 400 500 600 0 Output Current (mA) Output Current (mA) Figure 12. Dropout Voltage vs. Output Current Figure 13. Output Voltage vs. Output Current VIN=3.0V, VOUT=VFB, IOUT=1mA 0.85 65 0.84 Feedback Voltage (V) Quiescent Current (μA) VIN=4.3V, VOUT=3.3V, IOUT=0A 70 60 55 50 45 40 35 50 100 150 200 250 300 350 400 450 500 550 600 0.83 0.82 0.81 0.80 0.79 0.78 0.77 0.76 30 0.75 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature (℃) Figure 14. Quiescent Current vs. Ambient Temperature FP6186A-0.5-JUN-2021 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Ambient Temperature (℃) Figure 15. Feedback Voltage vs. Ambient Temperature 7 FP6186A Applications Information The FP6186A is a low-noise, low-dropout, low-quiescent current linear regulator designed for space-restricted applications. These devices can supply loads up to 600mA. As shown in the block diagram, the FP6186A consists of a highly accurate band gap core, noise bypass circuit, error amplifier, P-channel pass transistor, soft start, fast discharge and an internal feedback voltage divider. The band gap reference is connected to the error amplifier’s inverting input. The error amplifier compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the pass transistor gate will be pulled low. This allows more current to pass to the output and increases the output voltage. If the feedback voltage is too high, the pass transistor gate will be pulled high, allowing less current to pass to the output. The output voltage is feedback through an internal resistor voltage divider connected to the VOUT pin. Additional blocks include a current limit, over temperature protection and shutdown logic. Besides, current limit and on chip thermal shutdown features provide protection against any combination of over-load or ambient temperature that could cause junction temperature exceeding maximum rating. Output and Input Capacitor The FP6186A regulator is designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability. Larger value of the output capacitor decreases the peak deviations and improves transition response for larger current changes. The capacitor types (aluminum, ceramic and tantalum) have different characterizations, such as temperature and voltage coefficients. All ceramic capacitors were manufactured with a variety of dielectrics, each with different behavior across temperature and applications. Common dielectrics used are X5R, X7R and Y5V. It is recommended to use 1.0µF to 4.7µF X5R or X7R dielectric ceramic capacitors with 10mΩ to 30mΩ ESR range between device outputs to ground for transient stability. The FP6186A is designed to be stable with low ESR ceramic capacitors and higher values of capacitors, and ESR could improve output stability. The ESR of output capacitor is very important because it generates a zero to provide phase lead for loop stability. Current Limit The FP6186A includes a current limit. It monitors the output current and controls the pass transistor’s gate voltage to limit the output current under 800mA. The output can be shorted to ground for an indefinite amount of time without damaging the part. Quick Discharge The FP6186A has built-in a quick discharge circuitry to protect system function correct operation. This discharge block discharges output capacitor quickly to avoid low output voltage level to affect system’s MCU abnormal work when IC is power off or enable pin pulls down. Dropout Voltage The minimum dropout voltage of LDO determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the FP6186A uses a P-channel MOSFET pass transistor, its dropout voltage is a function of drain-to-source on resistance (RDS-ON) multiplied by the load current. Over Temperature Protection Over temperature protection limits total power dissipation in the FP6186A. When the junction temperature exceeds 145C, the thermal sensor will signal the shutdown logic and turn off the pass transistor. The thermal sensor will turn the pass transistor on again after the IC’s junction temperature drops 25C, resulting in a pulsed output during continuous thermal-overload conditions. Thermal Consideration The power handling capability of the device will be limited by maximum 125C operation junction temperature. The power dissipated by the device will be estimated by PD = IOUT  (VIN-VOUT). The power dissipation should be lower than the maximum power dissipation listed in “Absolute Maximum Ratings” section. There is no requirement for the ESR on the input capacitor, but its voltage and temperature coefficient have to be considered for device application environment. FP6186A-0.5-JUN-2021 8 FP6186A Applications Information (Continued) Output Voltage Setting The output voltage of regulator is determined by connecting external resistor dividers. The external resistor divider connects with FB pin. The output voltage is determined by the following equation: R1+R2 R1 VOUT = VF = 1+ 0. R2 R2 Active/Shutdown Input Operation The FP6186A is turned off by pulling the EN pin low and turned on by pulling it high. The enable input is TTL/CMOS compatible threshold for simple logic interfacing. If this feature is not used, the EN pin should be connected to VIN to keep the regulator output operating normally. It will become shutdown with this pin floating because EN pin has built-in a pull down resistor (refer to Block Diagram). FP6186A-0.5-JUN-2021 9 FP6186A Outline Information SOT-23-5 Package (Unit: mm) SYMBOLS UNIT DIMENSION IN MILLIMETER MIN MAX A A1 A2 B D E E1 e e1 L 0.90 0.00 0.90 0.30 2.80 2.60 1.50 0.90 1.80 0.30 1.45 0.15 1.30 0.50 3.00 3.00 1.70 1.00 2.00 0.60 Note: Followed From JEDEC MO-178-C. Carrier Dimensions Tape Size (W1) mm Pocket Pitch (P) mm 8 4 Reel Size (A) in mm Reel Width (W2) mm 7 180 8.4 Empty Cavity Length mm Units per Reel 300~1000 3,000 Life Support Policy Fitipower’s products are not authorized for use as critical components in life support devices or other medical systems. FP6186A-0.5-JUN-2021 10