LM1117IDTX-3.3/NOPB

DYW LM1117 1A 20V Low Dropout Linear Regulator Features Description • • • • LM1117 is a high voltage, high PSRR and low dropout voltage linear regulator with much improved dropout voltage and quiescent current over conventional x1117 LDOs. The device provides fixed output voltage of 1.8V, 2.5V, 3.3V and 5V. • • • • • Very Low Dropout Voltage: 580mV at 1A Low Quiescent Current: 128µ A Typical Wide Input Voltage Range: 2.5V to 20V Output Voltage Range: • Fixed Operation: 1.8V, 2.5V, 3.3V, 5V Maximum output current: 1A Output Voltage Accuracy: 2% Fast Load and Line Transient Responses Thermal Shutdown and Over-Current Protection Stable with 2.2µ F or Larger Ceramic Capacitor The LM1117 also features over 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 • TO-252 Package Applications • • • • • Cellular Phones Laptop computers Portable Equipment Battery-Powered Systems High-Efficiency Linear Power Supplies Typical Application Circuits VIN CIN 1µF IN OUT LM1117 GND VOUT COUT 2.2µF Fixed Output Voltage 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 1 DYW LM1117 Pin Configuration and Functions Fixed Output (Top View) 2 1 GND OUT 3 IN TO-252 Pin Descriptions PIN Number PIN Name I/O Function 1 GND - Ground. 2 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. 3 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. Package/Ordering Information DEVICE PACKAGE TYPE LM1117IDTX-1.8/NOPB TO-252 MARKING OUTPUT VOLTAGE LM1117 1.8V IDT-1.8 LM1117IDTX-2.5/NOPB TO-252 LM1117 2.5V IDT-2.5 LM1117IDTX-3.3/NOPB TO-252 LM1117 3.3V IDT-3.3 LM1117IDTX-5.0/NOPB TO-252 LM1117 IDT-5.0 鼎研微电子 (www.dymicro.com) Company Confidential 5.0V PACKING OPTION Tape and Reel, 1000 Tape and Reel, 1000 Tape and Reel, 1000 Tape and Reel, 1000 Rev 1.0, Page 2 DYW LM1117 Electrical Specifications Absolute Maximum Ratings Parameter Symbol IN and OUT Pins Value Unit IN and OUT −0.3 to 22 V Storage temperature range T STG −65 to +150 C Output current I OUT 1 A 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 Output Voltage V OUT 1.8 5 V Output Capacitance C OUT 1 220 µF Output Current I OUT 0 1 A Operating Junction Temperature TJ -40 125 C Thermal Information Package R θJA Unit TO-252 70 C/W 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 3 DYW LM1117 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 Input Voltage Symbol Test Conditions V IN Output Voltage Accuracy 0.1mA ≤ I OUT ≤ 1A Min Typ Max Unit 2.5 - 20 V -2.0 0 2.0 % V IN = 20V, No Load 128 µA V IN = 20V, I OUT = 1A 220 µA V DO V OUT = 3.3V, I OUT = 1A 580 mV Output Current Limit I LIM V OUT = 0 1.6 A Line Regulation ΔV OUT(LINE) 1 mV Load Regulation ΔV OUT /ΔI OUT 0.2 %/A 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 PSRR Thermal Shutdown Temperature Thermal Shutdown Hysteresis GND Pin Current I GND Dropout Voltage V IN = (V OUT + 1V) to 20V V IN = 6V, I OUT = 1mA to 1A 0.5 1.6 V V V EN = 20V 0.8 µA f = 1kHz, V OUT = 5V, I OUT = 1A 64 dB TSD 160 C T HYS 20 C 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 4 DYW LM1117 Typical Characteristics CIN = 1µF, COUT = 2.2µF, IOUT = 1A, T A = 25°C unless otherwise noted 700 70 600 Dropout Voltage (V) 80 PSRR (dB) 60 50 40 30 20 10 0 500 400 300 200 100 0 10 100 1K 10K 100K 1M 10M 0 100 200 Frequency (Hz) 300 400 500 600 700 900 1000 800 900 1000 Output Current (mA) V IN = 6V, V OUT = 5V, I OUT = 1A, C OUT = 2.2 µ F V IN = 6V Fig. 1 PSRR Fig. 2 Dropout Voltage 5.1 300 Ground Pin Current (µA) 5.08 Output Voltage (V) 800 5.06 5.04 5.02 5 4.98 4.96 4.94 4.92 4.9 250 200 150 100 50 0 -40 -20 0 20 40 60 80 100 120 0 o Temperature ( C) 100 200 300 400 500 600 700 Load Current (mA) V IN = 6V, I OUT = 0.1mA V IN = 20V Fig. 3 Output Voltage vs Temperature Fig. 4 Ground Current vs Load Current 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 5 DYW LM1117 Functional Block Diagram VIN VOUT Internal Regulator Current Limit R1 Bias and TSD R2 GND Block Diagram of Fixed Output Voltage Feature Description Dropout Voltage Dropout voltage is defined as the input voltage minus the output voltage at the rated output current where the pass transistor is fully on. The pass transistor is in the ohmic or triode region of operation and acts as a switch. LM1117 has a very low dropout voltage compared to most of the x1117 LDOs on the market. Output Current Limit and Short-Circuit Protection When overload events happen, the output current is internally limited to 1.6A. Undervoltage Lockout (UVLO) LM1117 uses an undervoltage lockout circuit to keep the output shut off until the internal circuitry is operating properly. Thermal Protection LM1117 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 6 DYW LM1117 PACKAGE OUTLINE DIMENSIONS TO-252 Dimensions (mm) Dimensions (mm) Symbol Symbol Min Max A 6.50 6.70 A1 0.64 0.74 Min Max C2 0.375 0.45 L 1.45 1.65 A2 2.286 TYP D1 3.166 REF A3 4.572 TYP E1 4.826 REF B 6.00 6.20 Θ1 0º ~ 8º B1 9.95 10.25 Θ2 10º TYP2 B2 1.06 1.16 Θ3 10º TYP C 2.15 2.35 Θ4 8.5º TYP4 C1 0.00 0.10 Θ5 70º TYP 鼎研微电子 (www.dymicro.com) Company Confidential Rev 1.0, Page 7