CYT 6602 600mA CMOS Low Noise LDO Voltage Regulator Features General Description The CYT6602 series of fixed output low dropout linear regulators are designed for portable battery powered applications, which require low power consumption, low noise environment, and lowd ropout voltage. Each device contains a bandgap voltage reference, an error amplifier, a PMOS power transistor, and resistors for setting outputvoltage, and current limit and temperature limit protection circuits. The CYT6602 has been designed to be used with low cost capacitors and requires a minimum output capacitor of 1.0µF. Standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0,3.3,3.5 and 3.6V SOT-89 ■ ■ ■ ■ ■ ■ Typical 175mV Dropout Voltage at 150mA. Excellent Line and Load Regulation. High Accuracy Output Voltage of 2%. Ultra-Low Ground Current at 25µA (Typ.) Over Current and thermal Protection. Standard SOT-89-3L Package. Applications ■ ■ ■ ■ ■ ■ USB removable devices MPEG4 devices Wireless LAN’s Hand-Held Instrumentation. Portable DVD players Digital camera Package ShenZhen CYT IC Design CO ,Ltd 1 CYT 6602 Pin Configuration N: 1.GND 2.IN 3.OUT G: 1.OUT 2.GND 3.IN Block Diagram Application Diagram VIN=5V CIN:2.2uF VIN VOUT CYT6602-3.3V GND ShenZhen CYT IC Design CO ,Ltd 2 VOUT=3.3V COUT:2.2uF CYT 6602 Ordering Information CYT6602- X X X PIN (1=>3)：1 G:OUT/GND/IN 2 N: GND/IN/OUT 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 6 F: Vout=3.0V Absolute Maximum Ratings(1) Parameter Symbol Value Units Input Supply Voltage VIN 6 V Output Voltage VOUT -0.3 to VIN V Power Dissipation PD Internally Limited (3) Output Short Circuit Duration Infinite Thermal Resistance, Junction-to-Ambient ӨJA Lead Temperature (Soldering,5 sec.) 180 ℃/W 260 ℃ Junction Temperature TJ 0 to +150 ℃ Storage Temperature TS -40 to +150 ℃ Operating Ratings(2) Parameter Symbol Value Units Supply Input Voltage VIN 5 V Junction Temperature TJ 0 to +125 ℃ ShenZhen CYT IC Design CO ,Ltd 3 CYT 6602 Electrical Characteristics VIN = VOUT + 1V; CIN = 2.2µF; COUT = 2.2µF; IOUT = 10mA; TJ = 25°C; unless otherwise noted Symbol Parameter Conditions Min Typ Max Units VOUT Output Voltage Accuracy CYT6602-1.5V CYT6602-1.8V CYT6602-2.5V CYT6602-2.8V CYT6602-3.0V CYT6602-3.3V 1.470 1.764 2.450 2.744 2.940 3.234 1.5 1.8 2.5 2.8 3.0 3.3 1.530 1.836 2.550 2.856 3.060 3.366 V △VOUT/△T Output Voltage Temperature Coefficient Note4 -- 0.1 -- mV/℃ △VOUT/VOUT Line Regulation VIN=VOUT+1V to 5V -- 0.2 -- ％/V IOUT=10 to 600mA -- 2.0 -- ％/V IOUT=10mA -- 8 -- IOUT=150mA -- 175 -- IOUT=250mA -- 300 -- IOUT=500mA -- 800 -- Thermal Protection Temperature -- 150 -- Protection Hysterisys -- 20 -- △VOUT/VOUT VIN-VOUT TPROTECTION Load Regulation (5) Dropout Voltage(6) Thermal Protection mV ℃ PSRR Ripple Rejection F=120Hz -- 60 -- dB IQ Quiescent Current IOUT=10mA -- 25 -- uA ILIMIT Current Limit VOUT=0V 600 -- -- mA 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 “Thermal Consideration” 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 0.1mA to 600mA. Changes in output voltage due to heating effects arecovered 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 differentia ShenZhen CYT IC Design CO ,Ltd 4 CYT 6602 Application Hints Like any low dropout regulator, CYT6602 requiresexternal capacitors to ensure stability. Theexternal capacitors must be carefully selected toensure performance. Input Capacitor: An input capacitor of at least 1µF is required.Ceramic or Tantalum can be used. increase without upper limit. The value canbe Output Capacitor: An output capacitor is required for stability. It mustbe placed no more than 1 cm away from the VOUTpin, and connected directly between VOUT and GNDpins. The minimum value is 1µF but may beincrease without limit. Thermal Consideration It is important that the thermal limit of the package should not be exceeded. The CYT6602 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 CYT6602. CYT6602 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. ShenZhen CYT IC Design CO ,Ltd 5 CYT 6602 Outline Drawing for SOT-89 DIM 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 4.400 4.600 0.159 0.167 4.050 4.250 0.067 0.075 1.700 1.900 0.051 0.059 1.300 1.500 0.094 0.102 2.400 2.600 0.035 0.047 0.890 1.200 0.118REF 3.00REF 0.059REF 1.50REF 0.016 0.020 0.400 0.520 0.055 0.063 1.400 1.600 0.014 0.016 0.350 0.410 10°TYP 10°TYP 0.028REF 0.70REF ShenZhen CYT IC Design CO ,Ltd 6