Ultra Low Dropout Linear Regulator TJ1118 FEATURES Ultra Low Dropout Voltage Low Ground Pin Current Excellent Line and Load Regulation Available in SOT-223, TO-252 Package Fixed Output Voltages : 1.0V, 1.1V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V Over-Temperature/Over-Current Protection SOT-223 3L PKG -40℃ to 125℃ Junction Temperature Range Moisture Sensitivity Level 3 TO-252 3L PKG APPLICATION Battery Powered Equipments Motherboards and Graphic Cards Microprocessor Power Supplies Peripheral Cards High Efficiency Linear Regulators Battery Chargers ORDERING INFORMATION Device TJ1118S-X.X TJ1118GRS-X.X Package SOT-223 3L TO-252 3L X.X = Output Voltage = 1.0, 1.1, 1.2, 1.5, 1.8, 2.5, and 3.3 DESCRIPTION The TJ1118 series of high performance ultra low-dropout linear regulators operates from 2.5V to 5.5V input supply and provides ultra low-dropout voltage, high output current with low ground current. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond fast to step changes in load which makes them suitable for low voltage micro-processor applications. The TJ1118 is developed on a CMOS process technology which allows low quiescent current operation independent of output load current. This CMOS process also allows the TJ1118 to operate under extremely low dropout conditions. Absolute Maximum Ratings CHARACTERISTIC SYMBOL MIN. MAX. UNIT Input Supply Voltage (Survival) VIN -0.3 6.5 V Maximum Output Current IMAX - Lead Temperature (Soldering, 5 sec) TSOL Storage Temperature Range TSTG Operating Junction Temperature Range 1) A 260 ℃ -65 150 ℃ TJOPR -40 125 ℃ SYMBOL MIN. MAX. UNIT VIN 2.5 5.5 V 1.0 1) Refer to the Ordering Information Table in this Data Sheet Operating Ratings CHARACTERISTIC Recommend Operating Input Voltage Aug. 2013 - R1.5 1 HTC Ultra Low Dropout Linear Regulator TJ1118 Ordering Information VOUT 1.0V 1.1V 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V Package Order No. Description (Maximum Output Current) Supplied As Status SOT-223 3L TJ1118S -1.0 0.8A Reel Contact us TO-252 3L TJ1118GRS -1.0 0.8A Reel Contact us SOT-223 3L TJ1118S -1.1 0.8A Reel Contact us TO-252 3L TJ1118GRS -1.1 0.8A Reel Contact us SOT-223 3L TJ1118S -1.2 0.8A Reel Contact us TO-252 3L TJ1118GRS -1.2 0.8A Reel Contact us SOT-223 3L TJ1118S -1.5 0.8A Reel Contact us TO-252 3L TJ1118GRS -1.5 0.8A Reel Contact us SOT-223 3L TJ1118S -1.8 0.8A Reel Contact us TO-252 3L TJ1118GRS -1.8 0.8A Reel Contact us SOT-223 3L TJ1118S -2.5 1A Reel Contact us TO-252 3L TJ1118GRS -2.5 1A Reel Contact us SOT-223 3L TJ1118S -3.3 1A Reel Contact us TO-252 3L TJ1118GRS -3.3 1A Reel Contact us TJ 1118 Output Voltage : 1.0V / 1.1V / 1.2V / 1.5V / 1.8V / 2.5V / 3.3V Package Type Green Mode S : SOT-223 RS : TO-252 G : Halogen Free Blank : Pb Free Root Name Product Code Aug. 2013 - R1.5 2 HTC Ultra Low Dropout Linear Regulator PIN CONFIGURATION TJ1118 PIN DESCRIPTION SOT-223 / TO-252 3LD Pin No. GND Name Function 1 GND Ground 2 VOUT Output Voltage 3 VIN Input Voltage GND VOUT VIN VOUT VIN SOT-223 3L TO-252 3L TYPICAL APPLICATION - Typical Application Circuit INPUT VIN VOUT OUTPUT TJ1118 10µF GND 10µF * TJ1118 can deliver a continuous current of up to 0.8A/1A the full operating temperature. However, the output current is limited by the restriction of power dissipation which differs from packages. A heat sink may be required depending on the maximum power dissipation and maximum ambient temperature of application. With respect to the applied package, the maximum output current of 0.8A/1A may be still undeliverable. * See Application Information. Aug. 2013 - R1.5 3 HTC Ultra Low Dropout Linear Regulator TJ1118 ELECTRICAL CHARACTERISTICS FOR VOUT ≥ 2.5V(Note 1) Limits in standard typeface are for TJ=25℃, and limits in boldface type apply over the full operating temperature range. (Note 2) Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 10 mA, CIN = 10 uF, COUT = 10 uF, VOUT ≥ 2.5V PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Tolerance VO 10 mA < IL < 1A VOUT+1V < VIN < 5.5V -2 -3 0 2 3 % Output Current IO VOUT ≥ 2.5V - - 1 A ΔVLINE VOUT+1V < VIN < 5.5V - 0.15 0.40 %/V ΔVLOAD 10 mA < IL < 1A - 1.5 - % Line Regulation (Note 3) Load Regulation Dropout Voltage (Note 3, 4) (Note 5) VDROP 55 IL = 500mA 200 IL = 1A 450 650 0.12 0.15 - IL = 100mA Ground Pin Current (Note 6) - IGND1 Power Supply Rejection Ratio PSRR Thermal Shutdown Temperature TSD 80 300 IL = 100mA mV mV mV mA IL = 1A - 0.12 0.20 - f = 1kHz - 55 - dB - 165 - ℃ Note 1. Stresses listed as the absolute maximum ratings may cause permanent damage to the device. These are for stress ratings. Functional operating of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibly to affect device reliability. Note 2. The minimum operating value for input voltage is equal to either (VOUT,NOM + VDROP) or 2.5V, whichever is greater. Note 3. Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current. Note 4. Regulation is measured at constant junction temperature by using a 10ms current pulse. Devices are tested for load regulation in the load range from 10mA to 1A. Note 5. Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. Dropout voltage specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the dropout voltage is nothing but the input to output differential, since the minimum input voltage is 2.5V. Note 6. Ground current, or quiescent current, is the difference between input and output currents. It's defined by IGND1 = IIN - IOUT under the given loading condition. The total current drawn from the supply is the sum of the load current plus the ground pin current. Aug. 2013 - R1.5 4 HTC Ultra Low Dropout Linear Regulator TJ1118 ELECTRICAL CHARACTERISTICS FOR VOUT < 2.5V(Note 1) Limits in standard typeface are for TJ=25℃, and limits in boldface type apply over the full operating temperature range. (Note 2) Unless otherwise specified: VIN = VO(NOM) + 1V, IL = 10 mA, CIN = 10 uF, COUT = 10 uF, VOUT < 2.5V PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage Tolerance VO 10 mA < IL < 800mA VOUT+1V < VIN < 5.5V -2 -3 0 2 3 % Output Current IO VOUT < 2.5V - - 0.8 A ΔVLINE VOUT+1V < VIN < 5.5V - 0.15 0.40 %/V ΔVLOAD 10 mA < IL < 800mA - 1.5 - % Line Regulation (Note 3) Load Regulation Dropout Voltage (Note 3, 7) (Note 5) VDROP 55 IL = 500mA 200 IL = 800mA 450 650 0.12 0.15 - IL = 100mA Ground Pin Current (Note 6) - IGND1 Power Supply Rejection Ratio PSRR Thermal Shutdown Temperature TSD 80 300 IL = 100mA mV mV mV mA IL = 800mA - 0.12 0.20 - f = 1kHz - 55 - dB - 165 - ℃ Note 7. Regulation is measured at constant junction temperature by using a 10ms current pulse. Devices are tested for load regulation in the load range from 10mA to 800mA. Aug. 2013 - R1.5 5 HTC Ultra Low Dropout Linear Regulator TJ1118 TYPICAL OPERATING CHARACTERISTIC (VIN: 2V/div, VOUT: 2V/div, 1ms/div) (VIN: 2V/div, VOUT: 2V/div, 1ms/div) Vin=3.5V, Vout=2.5V @ Iout=0A Vin=3.5V, Vout=2.5V @ Iout=1A Start Up Transient Response Start Up Transient Response (VIN: 2V/div, VOUT: 20mV/div, 10ms/div) (VIN: 2V/div, VOUT: 20mV/div, 10ms/div) Vin=3.5V to 5.5V, Vout=2.5V @ Iout=10mA Vin=5.5V to 3.5V, Vout=2.5V @ Iout=10mA Line Transient Response Line Transient Response (VOUT: 50mV/div, Iout: 500mA/div, 10ms/div) (VOUT: 50mV/div, Iout: 500mA/div, 10ms/div) Vin=3.5V, Vout=2.5V @ Iout=10mA to 0.5A Vin=3.5V, Vout=2.5V @ Iout=0.5A to 10mA Load Transient Response Load Transient Response Aug. 2013 - R1.5 6 HTC Ultra Low Dropout Linear Regulator TJ1118 (VOUT: 50mV/div, Iout: 500mA/div, 10ms/div) (VOUT: 50mV/div, Iout: 500mA/div, 10ms/div) Vin=3.5V, Vout=2.5V @ Iout=10mA to 1A Vin=3.5V, Vout=2.5V @ Iout=1A to 10mA Load Transient Response Load Transient Response 0 -10 Ripple Rejection [dB] -20 -30 -40 -50 -60 -70 -80 -90 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 Frequency [Hz] Dropout Voltage vs. Ambient Power Supply Rejection Temperature Ratio Aug. 2013 - R1.5 7 HTC Ultra Low Dropout Linear Regulator TJ1118 APPLICATION INFORMATION Introduction TJ1118 is intended for applications where high current capability and very low dropout voltage are required. It provides a simple, low cost solution that occupies very little PCB estate. Component Selection Input Capacitor : A large bulk capacitance over than 4.7uF should be closely placed to the input supply pin of the TJ1118 to ensure that the input supply voltage does not sag. Also a minimum of 4.7uF ceramic capacitor is recommended to be placed directly next to the VIN Pin. It allows for the device being some distance from any bulk capacitor on the rail. Additionally, input droop due to load transients is reduced, improving load transient response. Output Capacitor : A minimum ceramic capacitor over than 4.7uF should be very closely placed to the output voltage pin of the TJ1118. Increasing capacitance will improve the overall transient response and stability. Maximum Output Current Capability The TJ1118 can deliver a continuous current of 0.8A/1A over the full operating junction temperature range. However, the output current is limited by the restriction of power dissipation which differs from packages. A heat sink may be required depending on the maximum power dissipation and maximum ambient temperature of application. With respect to the applied package, the maximum output current of 0.8A/1A may be still undeliverable due to the restriction of the power dissipation of TJ1118. Under all possible conditions, the junction temperature must be within the range specified under operating conditions. The temperatures over the device are given by: TC = TA + PD X θCA / TJ = TC + PD X θJC / TJ = TA + PD X θJA where TJ is the junction temperature, T C is the case temperature, TA is the ambient temperature, PD is the total power dissipation of the device, θCA is the thermal resistance of case-to-ambient, θJC is the thermal resistance of junction-to-case, and θJA is the thermal resistance of junction to ambient. The total power dissipation of the device is given by: PD = PIN – POUT = (VIN X IIN)–(VOUT X IOUT) = (VIN X (IOUT+IGND)) – (VOUT X IOUT) = (VIN - VOUT) X IOUT + VIN X IGND where IGND is the operating ground current of the device which is specified at the Electrical Characteristics. The maximum allowable temperature rise (T Rmax) depends on the maximum ambient temperature (T Amax) of the application, and the maximum allowable junction temperature (T Jmax): TRmax = TJmax – TAmax The maximum allowable value for junction-to-ambient thermal resistance, θJA, can be calculated using the formula: θJA = TRmax / PD = (TJmax – TAmax) / PD TJ1118 is available in SOT-223, and TO-252 packages. The thermal resistance depends on amount of copper area or heat sink, and on air flow. If the maximum allowable value of θJA calculated above is as described in Table 1, no heat sink is needed since the package can dissipate enough heat to satisfy these requirements. If the value for allowable θJA falls near or below these limits, a heat sink or proper area of copper plane is required. Aug. 2013 - R1.5 8 HTC Ultra Low Dropout Linear Regulator TJ1118 Table. 1. Absolute Maximum Ratings of Thermal Resistance No heat sink / No air flow / No adjacent heat source / T A = 25°C Characteristic Symbol Rating Unit Thermal Resistance Junction-To-Ambient / SOT-223 θJA-SOT223 140 °C/W Thermal Resistance Junction-To-Ambient / TO-252 θJA-TO252 105 °C/W In case that there is no cooling solution and no heat sink / minimum copper plane area for heat sink, the maximum allowable power dissipation of each package is as follow; Characteristic Symbol Rating Unit Maximum Allowable Power Dissipation at TA=25°C / SOT-223 PDMax-SOT223 0.714 W Maximum Allowable Power Dissipation at TA=25°C / TO-252 PDMax-TO252 0.952 W - Please note that above maximum allowable power dissipation is based on the minimum copper plane area which does not exceed the proper footprint of the package. And the ambient temperature is 25°C. If proper cooling solution such as heat sink, copper plane area, air flow is applied, the maximum allowable power dissipation could be increased. However, if the ambient temperature is increased, the allowable power dissipation would be decreased. For example, in case of SOT-223 and TO-252 package, θJA-SOT223 is 140 °C/W and θJA-TO52 is 105 °C/W, however, as shown in below graph, θJA could be decreased with respect to the copper plane area. So, the specification of maximum power dissipation for an application is fixed, the proper copper plane area could be estimated by following graphs. As shown in graph, wider copper plane area leads lower θJA. Junction To Ambient Thermal Resistance, θJA vs. 1 ounce Copper Area [SOT-223 Package] Aug. 2013 - R1.5 Junction To Ambient Thermal Resistance, θJA vs. 2 ounce Copper Area [TO-252 Package] 9 HTC Ultra Low Dropout Linear Regulator TJ1118 The maximum allowable power dissipation is also influenced by the ambient temperature. With the above θJA-Copper plane area relationship, the maximum allowable power dissipation could be evaluated with respect to the ambient temperature. As shown in graph, the higher copper plane area leads θ JA. And the higher ambient temperature leads lower maximum allowable power dissipation. All this relationship is based on the aforesaid equation ; θJA = TRmax / PD = (TJmax – TAmax) / PD. Aug. 2013 - R1.5 10 HTC