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CYT6118BKG

CYT6118BKG

  • 厂商:

    ETC2

  • 封装:

  • 描述:

    CYT6118BKG - 500mA CMOS LDO Regulator - List of Unclassifed Manufacturers

  • 数据手册
  • 价格&库存
CYT6118BKG 数据手册
500mA CMOS LDO Regulator Description The CYT6118 is an efficient linear voltage regulator. It has extra low dropout voltage. At light loads the typical dropout voltage is 4.6mV, at full load the typical dropout voltage is 300mV. The output voltage accuracy is better than 2%. The CYT6118 has low ground current, so it can help prolong battery life. The CYT6118 is specially designed for hand-held, battery-powered devices. CYT6118 Features Typical 90mV dropout voltage at 150mA. Guaranteed 500mA output over the full operating temperature range. Low 300mV typical dropout voltage at full load. Extremely tight load and line regulation. Low temperature coefficient. Current and thermal limiting. No-load stability. Standard SOT-89-3 package. Pin Configuration Top view Applications Active SCSI terminators. Post regulators for switching supplies. Battery chargers. 1 2 3 High-efficiency linear power supplies. 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 CYT6118 _ _ _ 5V Vin C0 C=10u M0 Vout C1 C=10u 3.3V R2 rload PIN (1=>3): 1. G: OUT/GND/IN Package Type: 1. K: SOT-89-3L 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 gnd Control Logic gnd 1.25V Ref Over Current Protection gnd Thermal Protection All contents are subject to change without prior notice. 1 500mA CMOS LDO Regulator Absolute Maximum Ratings(1) Supply Input Voltage (VIN) ..……….… -0.7V to +7V Power Dissipation (PD) …………. Internally Limited Junction Temperature (TJ) …….….. 0°C to +125°C Lead Temperature (soldering, 5 sec.) ….…. 260°C Storage Temperature (TS) ………. -10°C to +150°C (3) CYT6118 Operating Ratings(2) Supply Input Voltage (VIN) ……...…… +2.5V to +6V Junction Temperature (TJ) …….….. 0°C to +125°C Package Thermal Resistance …………………………………120°C /W Electrical Characteristics VIN = VOUT + 1.0V; COUT = 4.7µF, IOUT = 10mA; TJ = 25°C;unless otherwise specified. Symbol Parameter Output Voltage Accuracy Output Voltage Temperature Coefficient Line Regulation Load Regulation (5) Conditions CYT6118-1.5V CYT6118-1.8V CYT6118-2.5V CYT6118-2.8V CYT6118-3.3V Note 4 VIN = VOUT + 1V to 5.5V IOUT =10mA to 500mA IOUT =10mA (5) Min 1.470 1.764 2.450 2.744 3.234 --------------- Typ 1.5 1.8 2.5 2.8 3.3 40 0.3 0.5 9 175 530 4.6 90 300 150 30 35 1 1.5 Max 1.530 1.836 2.550 2.856 3.366 --------------- Units VOUT V ∆VOUT /∆T ∆VOUT / VOUT ∆VOUT / VOUT ppm/℃ % % VOUT2V IOUT =150mA IOUT =500mA IOUT =10mA IOUT =150mA IOUT =500mA mV mV TPROTECTION PSRR IGROUND ILIMIT Thermal Protection Ripple Rejection Ground Current Current Limit Thermal Protection Temperature Protection Hysterisys f =120Hz IOUT=10mA VOUT =0V ºC ºC dB mA A All contents are subject to change without prior notice. 2 500mA CMOS LDO Regulator Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. CYT6118 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 500mA. 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 500mA CMOS LDO Regulator Application Hints Like any Low dropout regulator, CYT6118 requires external capacitors to ensure stability. The external capacitors must be carefully selected to ensure the performances. CYT6118 Thermal Consideration It is important that the thermal limit of the package should not be exceeded. The CYT6118 has built-in thermal protection. When the thermal limit is 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: The Power Dissipation (PD) is PD = IOUT * [VIN – VOUT] The thermal limit of the package is then limited to PD(MAX) = [TJ – TA]/θJA where TJ is the junction temperature, TA is ambient temperature, and θJA is around 120°C/W for CYT6118. CYT6118 is designed to enter thermal protection at 150°C. For example, if TA is 25°C then the max PD is limited to about 1W. In other words, if IOUT(MAX) = 500mA, then [VIN – VOUT] can not exceed 2.1V. Input Capacitor: An Input Capacitor of at least 10uF is required. Ceramic or Tantalum can be used. The value can be increased without upper limit. Output Capacitor: An Output Capacitor is required for look stability. It must be located no more than 1cm away from the VOUT pin, and connected directly between VOUT and GND pins. The minimum value is 10uF but once again its value can be increased without limit. All contents are subject to change without prior notice. 4 500mA CMOS LDO Regulator Typical Performance Characteristics (VIN = 5V, CIN = 1µF, COUT = 10µF, TA=25°C, unless otherwise noted.) Load Regulation 3.5 3 CYT6118 Output Voltage vs Temperature 3.5 3 Output Voltage (V) 1.5V 1.8V 2.5V 3.3V Output Voltage 2.5 2 1.5 1 0 100 200 300 400 500 600 Output Current (mA) 2.5 2 1.5 1 0 50 100 150 Temperature (C) 1.5V 1.8V 2.5V 3.3V Quiescent Current vs Temperature (Output Voltage @ 2.5V) 0.6 Dropout Voltage vs Output Current 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 20 40 60 80 100 120 140 Temperature (C) 0.5 Dropout Voltage (V) Quiescent Current (mA) 0.4 0.3 0.2 0.1 0 0 100 200 300 400 500 600 Output Current (mA) 1.5V 1.8V 2.5V 3.3V Line Transient Load Transient (10mA – 500mA) All contents are subject to change without prior notice. 5 500mA CMOS LDO Regulator Outline Drawing for SOT-89 DIM SOT-89 A C D K L M J CYT6118 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 0.016 0.020 0.055 0.063 0.014 0.016 10°TYP 0.028REF 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 0.400 0.520 1.400 1.600 0.350 0.410 10°TYP 0.70REF H G I A B C D E F G H I J K L M B F E All contents are subject to change without prior notice. 6
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