IL1117-XX IKSEMICON | Alldatasheet

Document overview

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Technical content

Features

  • Dropout Voltage – 1.2V(Typ)
  • Reference/Output Voltage Trimmed to ± 1%
  • Maximum Input Voltage – 15V
  • Adjustable Output Voltage or Fixed
  • Line Regulation typically at 0.2% max
  • Load Regulation typically at 0.4% max
  • Current Limiting and Thermal Protection
  • Standard 3-Pin Power Packages
  • Operating Junction Temperature Range -40 to +125°C IL1117-xxKB (for IL1117-1.2V - 0 to +150°C)

Applications

  • Post Regulator for switching DC/DC Converter
  • High Efficiency Linear Regulator
  • Battery Chargers
  • PC Add on Card
  • Motherboard clock supplies
  • LCD Monitor
  • Set-top Box Absolute Maximum Ratings Symbol Description Max Units VIN Input Voltage 15 V IOUT DC Output Current PD/(VIN-VO) mA TJ Operating Junction Temperature Range -40 to 125 °C ΘJA Thermal Resistance (SOT-223) 150 °C/W ΘJA Thermal Resistance (TO-252) 80 °C/W ΘJA Thermal Resistance (TO-220) 60 °C/W PD Maximum Power Dissipation (SOT-223) mW PD Maximum Power Dissipation (TO-252) mW PD Maximum Power Dissipation (SOT-220) Internally Limited mW IL1117-xx ADJ/GND 2. Output 3. Input SOT-223 TO-220 TO-252 Pin#2 connected with heat sink

Rev. 02

Electrical Characteristics

Vin = 5V, Co = 10uF, Ta = 25°C, Tj = -40°C to +125°C ( for IL1117-1.2 Tj = 0 to +150°C) unless otherwise specified PARAMETER CONDITIONS MIN TYP MAX UNIT OUTPUT VOLTAGE IL1117-1.2 IL1117-1.25 (Adjustable) IL1117-1.5 IL1117-1.8 IL1117-2.5 IL1117-2.85 IL1117-3.3 IL1117-5.0 Io = 10mA to 1.0A, Vin = 2.7 to 12.0V Io = 10mA to 1.0A, Vin = 2.8 to 12.0V Io = 10mA to 1.0A, Vin = 3.0 to 12.0V Io = 10mA to 1.0A, Vin = 3.3 to 12.0V Io = 10mA to 1.0A, Vin = 4.0 to 12.0V Io = 10mA to 1.0A, Vin = 4.4 to 12.0V Io = 10mA to 1.0A, Vin = 4.8 to 12.0V Io = 10mA to 1.0A, Vin = 6.5 to 15.0V 1.176 1.225 1.470 1.764 2.450 2.790 3.240 4.900 1.200 1.250 1.500 1.800 2.500 2.850 3.300 5.000 1.224 1.280 1.530 1.836 2.550 2.910 3.360 5.100 V LINE REGULATION IL1117-1.2 IL1117-1.25 (Adjustable) IL1117-1.5 IL1117-1.8 IL1117-2.5 IL1117-2.85 IL1117-3.3 IL1117-5.0 Io =10mA, Vin = 2.7 to 12.0V Io =10mA, Vin = 2.8 to 12.0V Io =10mA, Vin = 3.0 to 12.0V Io =10mA, Vin = 3.3 to 12.0V Io =10mA, Vin = 4.0 to 12.0V Io =10mA, Vin = 4.4 to 12.0V Io =10mA, Vin = 4.8 to 12.0V Io =10mA, Vin = 6.5 to 15.0V 2.0 0.1 2.0 2.0 2.0 2.0 3.0 4.0 7.0 0.2 7.0 7.0 7.0 7.0 7.0 10.0 mV mV mV mV mV mV mV LOAD REGULATION IL1117-1.2 IL1117-1.25 (Adjustable) IL1117-1.5 IL1117-1.8 IL1117-2.5 IL1117-2.85 IL1117-3.3 IL1117-5.0 Io = 10mA to 1.0A, Vin = 3.2V Io = 10mA to 1.0A, Vin = 3.3V Io = 10mA to 1.0A, Vin = 3.5V Io = 10mA to 1.0A, Vin = 3.8V Io = 10mA to 1.0A, Vin = 4.5V Io = 10mA to 1.0A, Vin = 4.85V Io = 10mA to 1.0A, Vin = 5.3V Io = 10mA to 1.0A, Vin = 7.0V 3.0 0.2 3.0 3.0 3.0 3.0 4.0 5.0 10.0 0.4 10.0 10.0 10.0 10.0 12.0 15.0 mV mV mV mV mV mV mV DROPOUT VOLTAGE(2) All Models Io =1A 1.20 1.30 V Io =1A ( Tj = -40°C to +125°C) 1.20 1.55 CURRENT LIMIT Vin - Vo = 5V 1000 mA MINIMUM LOAD CURRENT Adjustable Models Vin = 13.75V 5 mA QUIESCENT CURRENT Vin - Vo = 1.5V 5.2 10 mA Adjust Pin Current Io = 10mA, Vin - Vo = 1.4 to 10V 50 120 uA vs Load Current, IL1117 Io = 10mA to 1A, Vin - Vo = 1.4 to 10V 0.5 5 uA TEMPERATURE DRIFT Tj = -40°C to +125°C 0.5 % RMS Output Noise Bandwidth of 10Hz to 10kHz at 25°C 0.003 %Vo Ripple Rejection Ratio 120Hz input Ripple(Cadj for ADJ) = 25uF Vin -Vo = 5V, Io = 1.0A Tj = -40°C to +125°C 60 72 dB NOTES: (1) IL1117-x adjustable versions require a minimum load current for ±3% regulation. (2) Dropout voltage is the input voltage minus output voltage that produces a 1% decrease in output voltage.

Rev. 02 Block Diagram

Application Information

FIGURE 1. Fixed-Voltage Model FIGURE 2. Adjustable-Voltage Model —Basic Connections. --Basic Connections.

Rev. 02 Typical Perfomance Characteristics

Rev. 02 Typical Perfomance Characteristics (continue) Figure 3.

Rev. 02 Like most regulators, the IL1117 regulates the output by comparing the output voltage to an internally gen- erated reference voltage. On the adjustable version as shown in Fig.4, the V REF is available externally as 1.25V between VOUT and ADJ. The voltage ratio formed by R1 and R2 should be set to conduct 10mA (mi- numum output load). The output voltage is given by the following equation: On fixed versions of IL1117, the voltage divider is provided internally. Figure 4. Basic Adjustable Regulator The adjust terminal can be bypassed to ground with a bypass capacitor (CADJ) to improve ripple rejection. The R1 is the resistor between the output and the adjust pin. Its value is normally in the range of 100- 200Ω. For example, with R1 = 124Ω and fRIPPLE = 120Hz, the CADJ should be > 11μF. IL1117 requires a capacitor from VOUT to GND to provide compensation feedback to the internal gain stage. Note: It is important that the ESR for this capacitor does not exceed 0.5 Ω. The output capacitor does not have a theoretical upper limit and increasing its value will increase stability. COUT = 100μF or more is typical for high current regulator design. and ground pins can be connected to low side of the load.

Figure 5. Best Load Regulation Using Adjustable Output Regulator IL1117 is protected against overload conditions. Current protection is triggered at typically 1.6A. case of the device must be electrically isolated, a thermally conductive spacer is recommended.

Rev. 02

Rev. 02

Rev. 02