400mA Super LDO Linear Regulator CYT6119 Features Description The CYT6119 is an efficient linear voltage regulator. It has extra low dropout voltage. At light loads the typical dropout voltage is 15mV, at full load the typical dropout voltage is 600mV. The ¾ Typical 175mV dropout voltage at 150mA. ¾ Low Ground current at 65uA. (Typ.) ¾ Guaranteed 400mA output over the full operating temperature range. ¾ Extremely tight load and line regulation. ¾ Low temperature coefficient. The CYT6119 has low ground current at 65uA, ¾ Current and thermal limiting. output voltage accuracy is better than 2%. so it can help prolong battery life. The CYT6119 is ¾ specially designed for hand-held, battery-powered No-load stability. ¾ Standard SOT-89-3 package. devices. Pin Configuration Applications Top view 2 1 3 ¾ Active SCSI terminators. ¾ Post regulators for switching supplies. ¾ Battery chargers. ¾ High-efficiency linear power supplies. ¾ Computer motherboard, display, graphic card DC/DC converter, such as 5V to 3.3V, 3.3V to 2.8V or 3.3V to 2.5V. SOT-89 Typical Application Ordering Information CYT6119 _ _ _ Vin 5V C1 C=10u C0 C=10u 1.25V Ref Over Current Protection R2 rload PIN (1=>3): 1. G: OUT/GND/IN 2. N: GND/IN/OUT Control Logic gnd 3.3V Vout M0 gnd Thermal Protection Package Type: 1. K: SOT-89-3L gnd Output Voltage: 1. A: VOUT = 3.3V 2. B: VOUT = 2.8V 3. C: VOUT = 2.5V 4. D: VOUT = 1.8V 5. E: VOUT = 1.5V 6. F: VOUT = 3.0V All contents are subject to change without prior notice. 1 400mA Super LDO Linear Regulator Absolute Maximum Ratings(1) CYT6119 Operating Ratings(2) Supply Input Voltage (VIN) ..………..……………….+6V Supply Input Voltage (VIN) ……..…… +2.8V to +5.5V (3) Junction Temperature (TJ) …….…….. 0°C to +125°C Power Dissipation (PD) ………….. Internally Limited Junction Temperature (TJ) ………................….. 150°C Package Thermal Lead Temperature (soldering, 5 sec.) ……....…. 260°C Resistance …………………………………… 180°C/W Storage Temperature (TS) ………….. -10°C to +150°C Electrical Characteristics VIN = VOUT + 1.0V; CIN = 2.2µF; COUT = 2.2µF, IOUT = 10mA; TJ = 25°C, unless otherwise specified. Symbol VOUT ∆VOUT /∆T ∆VOUT / VOUT ∆VOUT / VOUT VIN - VOUT TPROTECTION Parameter Conditions Min Typ Max CYT6119-1.5V 1.470 1.5 1.530 CYT6119-1.8V 1.764 1.8 1.836 Output Voltage CYT6119-2.5V 2.450 2.5 2.550 Accuracy CYT6119-2.8V 2.744 2.8 2.856 CYT6119-3.0V 2.940 3.0 3.060 CYT6119-3.3V 3.234 3.3 3.366 Note 4 -- 50 -- ppm/℃ VIN = VOUT + 1V to 5.5V -- 1 -- % IOUT =10mA to 250mA(5) -- 1 -- IOUT =10mA to 400mA(5) -- 1.5 -- IOUT =10mA -- 15 -- IOUT =150mA -- 175 -- IOUT =250mA -- 320 -- IOUT =400mA -- 600 -- Thermal Protection Temperature -- 150 -- ℃ Protection Hysterisys -- 20 -- ℃ f =120Hz -- 51 -- dB IOUT =10mA -- 65 -- IOUT =400mA -- 110 -- VOUT =0V -- 600 -- Output Voltage Temperature Coefficient Line Regulation Load Regulation (5) Dropout Voltage(6) Thermal Protection PSRR Ripple Rejection IGROUND Ground Current ILIMIT Current Limit All contents are subject to change without prior notice. 2 Units V % mV uA mA 400mA Super LDO Linear Regulator CYT6119 Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) - TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See Table 1 and the “Thermal Considerations” section for details. Note 4: Output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range. Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 100µA to 400mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. All contents are subject to change without prior notice. 3 400mA Super LDO Linear Regulator CYT6119 Application Hints Thermal Consideration Like any Low dropout regulator,CYT6119 requires It is important that the thermal limit of the package external capacitors to ensure stability. The external should not be exceeded. The CYT6119 has built-in capacitors must be carefully selected to ensure the thermal protection. When the thermal limit is performances. exceeded, the IC will enter protection, and the VOUT will be reset to zero. The power dissipation for a given application can be calculated as follows: Input Capacitor: An Input Capacitor of at least 10uF is required. Ceramic or Tantalum can be used. The value can The Power Dissipation (PD) is be increased without upper limit. PD = IOUT * [VIN – VOUT] Output Capacitor: The thermal limit of the package is then limited to An Output Capacitor is required for look stability. It PD(MAX) = [TJ – TA]/θJA where TJ is the junction must be located no more than 1cm away from the temperature, TA is ambient temperature, and θJA is VOUT pin, and connected directly between VOUT and around 180°C/W for CYT6119. CYT6119 is designed GND pins. The minimum value is 10uF but once to enter thermal protection at 150°C. For example, if again its value can be increased without limit. TA is 25°C then the max PD is limited to about 0.7W. In other words, if IOUT(MAX) = 400mA, then [VIN – VOUT] can not exceed 1.75V. All contents are subject to change without prior notice. 4 400mA Super LDO Linear Regulator CYT6119 Typical Performance Characteristics (VIN = 5V, CIN = 1µF, COUT = 10µF, TA=25°C, unless otherwise noted.) Output Voltage vs Temperature 3.5 3.5 3 3 1.5V 1.8V 2.5V 3.3V 2.5 2 Output Voltage (V) Output Voltage Load Regulation 1.5V 1.8V 2.5V 3.3V 2.5 2 1.5 1.5 1 1 0 100 200 300 400 500 0 600 50 100 150 Temperature (C) Output Current (mA) Quiescent Current vs Temperature (Output Voltage @ 2.5V) Dropout Voltage vs Output Current 0.5 Dropout Voltage (V) Quiescent Current (mA) 0.6 1.17 1.16 1.15 1.14 1.13 1.12 1.11 1.1 1.09 1.08 1.07 1.06 0.4 1.5V 1.8V 2.5V 3.3V 0.3 0.2 0.1 0 0 20 40 60 80 Temperature (C) Line Transient 100 120 140 0 100 200 300 400 500 600 Output Current (mA) Load Transient (10mA – 500mA) All contents are subject to change without prior notice. 5 400mA Super LDO Linear Regulator CYT6119 Outline Drawing for SOT-89 DIM SOT-89 A C D J M K E F B L H G I A B C D E F G H I J K L M N DIMENSIONS INCHES MM MIN MAX MIN MAX 0.173 0.181 0.159 0.167 0.067 0.075 0.051 0.059 0.094 0.102 0.035 0.047 0.118REF 0.059REF 4.400 4.600 4.050 4.250 1.700 1.900 1.300 1.500 2.400 2.600 0.890 1.200 3.00REF 1.50REF 0.016 0.020 0.055 0.063 0.014 0.016 10°TYP 0.028REF 0.400 0.520 1.400 1.600 0.350 0.410 10°TYP 0.70REF All contents are subject to change without prior notice. 6