SPX5205M5-L/TR

DYW SPX5205 300mA 20V Low-Noise LDO Voltage Regulator Features Description • Wide Input Voltage Range: 2.5V to 20V • Output Voltage Range: • Adjustable Operation: 1.2V to 18V • Fixed Operation: 1.8V, 3.3V, and 5.0V • Maximum Output Current: 300mA • Low Dropout Voltage: 275mV at 300mA • Output Voltage Accuracy: 2% • Fast Load and Line Transient Responses • Low Noise When Using External Bypass Cap • Thermal Shutdown and Over-Current Protection • Stable with 1µ F or Larger Ceramic Capacitor The device is a high voltage, high PSRR and low dropout voltage linear regulator capable of sourcing 300mA current. The output voltage can be adjusted from 1.2V to 18V by using external resistor divider for the adjustable version. The fixed version output voltage spans from 1.8V to 5.0V. The device also features short-circuit current limit and thermal shutdown protection, as well as automatic discharge function to quickly discharge VOUT in the disabled states. • Operating Junction Temperature: -40C to +125C • Available package: SOT23-5 Applications • • • • • Cellular Phones Laptop computers Portable Equipment Battery-Powered Systems High-Efficiency Linear Power Supplies Typical Application Circuits VIN IN VOUT OUT VIN IN LDO LDO CIN 1µF EN GND BYP CBYP 10nF COUT 2.2µF CIN 1µF GND R1 ADJ R2 COUT 2.2µF Adjustable Output Voltage Low Noise Fixed Output Voltage 鼎研微电子 (www.dymicro.com) EN VOUT OUT Company Confidential Rev 1.0, Page 1 DYW SPX5205 Pin Configuration and Functions IN 1 GND 2 EN 3 5 OUT 4 ADJ/BYP 5-Pin SOT-23 (Top View) Pin Descriptions PIN Number PIN Name I/O Function 1 IN I Input supply voltage pin. It is recommended to use a 1µF or larger ceramic capacitor from IN pin to ground to get a good power supply decoupling. 2 GND - Ground. 3 EN I Enable Pin. Drive EN high to turn on the regulator. Drive EN low to turn off the regulator. 4 ADJ/BYP I For adjustable voltage version this is feedback voltage input pin. Connect this pin to the midpoint of an external resistor divider to adjust the output voltage. Place the resistors as close as possible to this pin. For fixed voltage version this is reference bypass pin. Connect an external 10nF capacitor from this pin to ground can reduce the output to a very low noise level. This pin can be left open if low noise at the output is not required. 5 OUT O Regulator output voltage pin. A 2.2µF or larger ceramic capacitor from OUT to ground is required to ensure regulator stability. The capacitor should be placed as close to the output as possible. Minimize the impedance from the OUT pin to the load. Ordering Information DEVICE PACKAGE TYPE OUTPUT VOLTAGE PACKING OPTION SPX5205M5-L-1-8/TR SOT23-5 1.8V Tape and Reel, 3000 SPX5205M5-L-2-5/TR SOT23-5 2.5V Tape and Reel, 3000 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 2 DYW SPX5205 SPX5205M5-L-3-3/TR SOT23-5 3.3V Tape and Reel, 3000 SPX5205M5-L-5-0/TR SOT23-5 5.0V Tape and Reel, 3000 SPX5205M5-L/TR SOT23-5 ADJ Tape and Reel, 3000 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 3 DYW SPX5205 Electrical Specifications Absolute Maximum Ratings Parameter Symbol IN, OUT and EN Pins Value Unit IN, OUT and EN −0.3 to 22 V ADJ/BYP −0.3 to +6 V Storage temperature range T STG −65 to +150 C Output current I OUT 500 mA ADJ Pin Notes: 1. Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the device and affect product reliability. These conditions represent a stress rating only, and functiona l operations of the device at these or any other conditions above the operational limits noted in this specification is not imp lied. ESD Ratings Value V ESD Electrostatic Discharge HBM (Human Body Model) 3000 CDM (Charge Device Model) 1000 Unit V Recommended Operation Conditions Over operating temperature range unless otherwise noted Parameter Symbol Min Max Unit Input Supply Voltage V IN 2.5 20 V Enable Input Voltage EN 0 20 V Output Voltage V OUT 1.2 18 V Adjustable/Bypass Pin Voltage ADJ/BYP 0 5 V Output Capacitance C OUT 1 47 µF Output Current I OUT 0 300 mA Operating Junction Temperature TJ -40 125 C Thermal Information Package R θJA Unit SOT23-5 195 C/W 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 4 DYW SPX5205 Electrical Characteristics V IN = 2.5V or V IN = V OUT + 1V (whichever is greater), I OUT = 1mA, COUT = 2.2µF, typical values are at T A = 25°C unless otherwise noted Parameter Symbol Input Voltage V IN Reference Voltage V REF Output Voltage Accuracy Conditions Min Typ Max Unit 2.5 - 20 V 1.2 0.1mA ≤ I OUT ≤ 300mA -2.0 0 V 2.0 % V IN = 2.5V, No Load 69 µA V IN = 2.5V, I OUT = 300mA 145 µA I SHDN V IN = 2.5V, V EN = 0V 2.3 µA Dropout Voltage V DO V OUT = 3.3V, I OUT = 300mA 230 mV Output Current Limit I LIM V OUT = 0V Line Regulation ΔV OUT(LINE) Load Regulation ΔV OUT /(V OUT ΔI OUT ) EN pin low-level input voltage (device disabled) V IL(EN) EN pin high-level input voltage (device enabled) V IH(EN) EN PIN Leakage Current I EN Power Supply Ripple Rejection GND Pin Current I GND Shutdown Current 500 V IN = V OUT +1V to 20V V IN = 6V, I OUT = 1mA to 300mA mA 0.05 mV/V 0.0008 %/mA 0.5 1.6 V V V EN = 20V 0.8 µA PSRR f = 1kHz, V OUT = 5V, I OUT = 300mA 64 dB Output Noise Voltage VN BW = 100Hz to 100kHz, C BYP = 10nF, C OUT = 2.2µF, V OUT = 1.8V, I OUT = 300mA 45 µV RMS Thermal Shutdown Temperature TSD 160 C Thermal Shutdown Hysteresis T HYS 20 C 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 5 DYW SPX5205 Typical Characteristics CIN = 1µF, COUT = 2.2µF, IOUT = 300mA, T A = 25°C unless otherwise noted 3.4 70 3.38 Output Voltage (V) 80 PSRR (dB) 60 50 40 30 20 10 3.36 3.34 3.32 3.3 3.28 3.26 3.24 3.22 0 3.2 10 100 1K 10K 100K 1M 10M -40 -20 0 20 40 60 80 100 Frequency (Hz) Temperature ( C) V IN = 6V, V OUT = 5V, I OUT = 300mA, C OUT = 2.2 µ F V IN = 6V, V OUT = 3.3V, I OUT = 0.1mA Fig. 1 PSRR Fig. 2 Output Voltage vs Temperature 160 Ground Pin Current (µA) 180 160 Dropout Voltage (V) 120 o 140 120 100 80 60 40 20 0 140 120 100 80 60 40 20 0 0 50 100 150 200 250 300 0 Output Current (mA) 50 100 150 200 250 Load Current (mA) V IN = 6V V IN = 6V Fig. 3 Dropout Voltage Fig. 4 Ground Current vs Load Current 鼎研微电子 (www.dymicro.com) 300 Company Confidential Rev 1.0, Page 6 DYW SPX5205 Functional Block Diagram VIN VOUT Internal Regulator Current Limit R1 Bias and TSD EN BYPASS R2 GND Block Diagram of Fixed Output Voltage VIN VOUT Internal Regulator Current Limit R Bias and TSD ADJ EN EN GND Block Diagram of Adjustable Output Voltage 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 7 DYW SPX5205 Feature Description Enable The enable pin for the LDO is active high. The device is enabled when the enable pin voltage is greater than V IH(EN) and disabled with the enable pin voltage less than V IL(EN) . If independent control of chip enable is not needed, then connect the enable pin to the input. The LDO has an internal pulldown MOSFET that connects a discharge resistor from VOUT to ground when the device is disabled to actively discharge the output voltage. Output Current Limit and Short-Circuit Protection When overload events happen, the output current is internally limited. Undervoltage Lockout (UVLO) The LDO uses an undervoltage lockout circuit to keep the output shut off until the internal circuitry is operating properly. Thermal Protection The LDO contains a thermal shutdown protection circuit to turn off the output current when excessive heat is dissipated in the LDO. 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 8 DYW SPX5205 Application Information Typical Application for Fixed and Adjustable Output Voltage VIN IN VOUT OUT VIN IN LDO LDO CIN 1µF EN GND BYP CBYP 10nF COUT 2.2µF CIN 1µF EN VOUT OUT GND R1 ADJ R2 COUT 2.2µF Adjustable Output Voltage Low Noise Fixed Output Voltage Input Capacitor and Output Capacitor The LDO is designed and characterized for operation with ceramic capacitors of µ F or greater at the input and 2.2 µ F or greater at the output. Locate the input and output capacitors as near as practical to the input and output pins to minimize the trace inductance from the capacitor to the device. Adjustable Output Voltage The output voltage of the LDO can be adjusted from 1.2V to 18V according to the following equation. 𝑉𝑂𝑈𝑇 = 1.2𝑉 × (1 + 鼎研微电子 (www.dymicro.com) 𝑅1 ) 𝑅2 Company Confidential Rev 1.0, Page 9 DYW SPX5205 PACKAGE OUTLINE DIMENSIONS SOT23-5 Dimensions (mm) Dimensions (mm) Symbol A Symbol Min Max 2.82 3.02 e 0.95 (BSC) Min Max C 1.05 1.15 C1 0.03 0.15 b 0.28 0.45 C2 0.12 0.23 B 1.50 1.70 L 0.35 0.55 B1 2.60 3.00 θ 0 8 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 10