TS5205 Taiwan Semiconductor 150mA Low Noise LDO Voltage Regulator with Enable Function GENERAL DESCRIPTION FEATURES TS5205 is an efficient linear voltage regulator with ultra- low dropout voltage. The Chip Enable (EN) includes a ● ● ● ● ● ● ● Ultra Low Noise Output Output Current up to 150mA Low Dropout Voltage Low Power Consumption “Zero” Off-mode Current Logic Controlled Electronic Enable Internal Current Limit CMOS or TTL compatible input allows the output to be ● Thermal Shutdown Protection low noise output, very low dropout voltage (typically 17mV at light loads and 165mV at 150mA), and very low power consumption (600µA at 100mA), providing high output current even when the application requires very turned off to prolong battery life. When shutdown, power consumption drops nearly to zero. TS5205 is included a APPLICATION precision voltage reference, error correction circuit, a ● ● ● ● ● ● ● current limited output driver, over temperature shutdown, revered battery protection and a reference bypass pin to improve its already excellent low-noise performance. SOT-25 Cellular Telephones Palmtops, Notebook Computers Battery Powered Equipment Consumer and Personal Electronics SMPS Post Regulator and DC to DC Modules High-efficiency Linear Power Supplies Portable Application Pin Definition: 1. Input 2. Ground 3. Enable 4. Bypass / Adjust 5. Output Notes: Moisture sensitivity level: level 3. Per J-STD-020 TYPICAL APPLICATION CIRCUIT TS5205CX5xx Fixed Output Version TS5205CX5 Adjustable Output Version Adjustable Version: VOUT = 1.24 (1+R2/R1) (Adjustable output range up to 8V) EN (pin3) may be connected directly to VIN (pin 1) Low noise operation: CBYP =470pF, COUT >2.2uF Basic operation: CBYP =not used, COUT >2.2uF Document Number: DS_P0000197 1 Version: I15 TS5205 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise noted) (Note 1) PARAMETER SYMBOL LIMIT UNIT Input Supply Voltage VIN -20~ +20 V Enable Input Voltage VCE -20~ +20 V Power Dissipation (Note 2) PD Internal limited Operating Junction Temperature Range TJ -40 ~ +125 o -65 ~ +150 o Storage Temperature Range TSTG o Lead Soldering Temperature (260 C) C C 5 S SYMBOL Limit UNIT RӨJA 220 °C/W SYMBOL LIMIT UNIT Input Supply Voltage VIN +2.5 ~ +16 V Enable Input Voltage VCE 0 ~ VIN V THERMAL PERFORMANCE PARAMETER Junction to Ambient Thermal Resistance RECOMMEND OPERATING RATING (Note 2) PARAMETER ELECTRICAL SPECIFICATIONS (VIN =Vo+1V, Io=100µA, COUT=1µF, Vce≥2V,TJ = 25°C unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT 0.99|Vo| VOUT 1.01|Vo| V Output Voltage VIN=Vo + 1V Output Voltage Temp. Coefficient (Note 4) -- 40 -- ppm/ C Line Regulation Vo+1V ≤ VIN ≤ 16V -- 0.005 0.05 % 0.1mA ≤ Io ≤ 150mA -- 0.02 0.2 % Io=100uA -- 17 50 Io=50mA -- 110 150 Io=100mA -- 140 250 Io=150mA -- 165 275 Io=100uA -- 80 125 Io=50mA -- 350 600 Io=100mA -- 600 1000 Io=150mA -- 1300 1900 VEN≤0.4V (Shutdown) -- 0.01 1 VEN≤0.18V (Shutdown) -- -- 5 Output Current Limit VOUT=0V -- 300 500 mA Power Supply Rejection Ratio At f=100Hz, Io=100µA, -- 75 -- dB -- 0.05 -- %/W -- 260 -- nV√Hz Load Regulation Dropout Voltage (Note 5) (Note 6) Ground Pin Current (Note 7) Quiescent Current Thermal Regulation (Note 8) Output Noise Document Number: DS_P0000197 Io=50mA, COUT=2.2µF, 2 o mV µA µA Version: I15 TS5205 Taiwan Semiconductor ELECTRICAL SPECIFICATIONS (VIN =Vo+1V, Io=100µA, COUT=1µF, Vce≥2V,TA = 25°C unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT -- -- 0.4 V 2.0 -- -- V VIL≤ 0.4V -- 0.01 -1 µA VIH≥ 2.0V -- 5 20 V Enable Function Enable Input Logic-Low Voltage Regulation shutdown Enable Input Logic-Low Voltage Regulation enable Enable input Current Note: 1. Exceeding the absolute maximum rating may damage the device. 2. The maximum allowable power dissipation at any TA is PD(MAX) = [TJ(MAX) - Ta] + RθJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 3. The device is not guaranteed to function outside its operating rating. 4. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. 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 1mA to 150mA (5V version) and 1mA to 120mA (VOUT<5V version). Changes in output voltage due to heating effects are covered by the thermal regulation specification. 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. 7. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load current plus the ground pin current. 8. Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a 150mA load pulse at VIN=16V for t=10ms. Document Number: DS_P0000197 3 Version: I15 TS5205 Taiwan Semiconductor ORDERING INFORMATION OUTPUT VOLTAGE PART NO. PACKAGE PACKING 2.5V TS5205CX525 RFG SOT-25 3,000pcs / 7” Reel 3.3V TS5205CX533 RFG SOT-25 3,000pcs / 7” Reel 5.0V TS5205CX550 RFG SOT-25 3,000pcs / 7” Reel Note: 1. Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC. 2. Halogen-free according to IEC 61249-2-21 definition. BLOCK DIAGRAMS APPLICATION INFORMATION Enable Input TS5205 series feature an active-high (>2V) enable (EN) input that allows ON/OFF control of the regulator. Current drain reduces to “zero” when the device is shutdown, with only micro-amperes of leakage current. The EN is compatible with CMOS logic interfacing. EN may be directly tied to VIN and pulled up to the maximum supply voltage. Input Capacitor Requirement An input capacitor of 0.1µF or greater is recommended when the device is more than 10” away from the bulk AC supply capacitance or when the supply is a battery. Output Capacitor Requirement The TS5205 series requires an output capacitor to maintain stability and improve transient response is necessary. 2.2µF minimum is recommended. Larger values improve the regulator’s transient response. The output capacitor value may be increased without limit. The output capacitor should have an ESR (effective series resistance) less than 5Ω and a resonant frequency above 1MHz. Ultra low ESR capacitors can cause a low amplitude oscillation on the output and/or under damped transient response. Most of tantalum or aluminum electrolytic capacitors are adequate; film types will work. Since many aluminum electrolytic have electrolytes that freeze at about –30°C, o solid tantalums are recommended for operation below –25 C. At lower values of output current, less output capacitance is required for output stability. The capacitor can be reduced to 0.47µF for current below 10mA or 0.33µF for currents below 1mA. No Load Stability The TS5205 series will remain stable and in regulation with no load, unlike many other voltage regulators. This is especially important in CMOS RAM keep alive applications. Document Number: DS_P0000197 4 Version: I15 TS5205 Taiwan Semiconductor APPLICATION INFORMATION (CONTINUE) Reference Bypass Capacitor Bypass is connected to the internal voltage reference. A 470pF capacitor (CBYPASS) connected from Bypass to Ground quiets this reference, providing a significant reduction in output noise. CBYPASS reduces the regulator phase margin; when using CBYPASS, output capacitors of 2.2µF or greater are generally required to maintain stability. The star up speed of the TS5205 is inversely proportional to the size of the reference bypass capacitor. Applications requiring a slow ramp up of output voltage should consider larger values of CBYPASS. Likewise, if rapid turn on is necessary, consider omitting CBYPASS. If output noise is not a major concern, omitted CBYPASS and leave Bypass open. Adjustable Regulator Design The adjustable regulator versions can be adjusted to a specific output voltage by using two external resistors to programming the output voltage anywhere between 1.25V and the 8V maximum operating rating of the family. Two resistors are used. Resistors can be quite large up to 470kΩ, because of the very high input impedance and low bias current of the sense comparator, the resistor values are calculated by: A capacitor from Adjust to Ground provides greatly improved noise performance. TS5205CX5 VOUT VIN R1 COUT 2.2µF EN on off CBYP 470pF R2 Adjustable Version: VOUT = 1.24 (1+R2/R1) (Adjustable output range up to 8V) Dual Supply Operation When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground. Thermal Characteristics TS5205 series is designed to provide 150mA (5V version) of continuous current in a very small package. Maximum power dissipation can be calculated based on the output current and the voltage drop across the part. To determine the maximum power dissipation of the package, use the junction-ambient thermal resistance of the device and the following basic equation: PD(MAX) = [ TJ(MAX) – T A ] /ΘJA o TJ(MAX) is the maximum junction temperature of the die(125 C), and Ta is the ambient operating temperature. ΘJA is layout dependent, the actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN – VOUT) * IOUT + VIN * IGND Substituting PD(MAX) for PD and solving for the operating conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, when operating the TS5205CX33 at room temperature with a minimum footprint layout, the maximum input voltage for a set output current can be determined as follows: o o o PD(MAX) = (125 C – 25 C) / 220 C/W PD(MAX) = 455mW Document Number: DS_P0000197 5 Version: I15 TS5205 Taiwan Semiconductor APPLICATION INFORMATION (CONTINUE) Thermal Characteristics o The junction to ambient thermal resistance for the minimum footprint is 220 C/W, the maximum power dissipation must not be exceeded for proper operation. Using the output voltage of 3.3V and an output current of 120mA, the maximum input voltage can be determined. From the electrical characteristics table, the maximum ground current for 120mA output current is 2.5mA. 445mW = (VIN – 3.3V) * 150mA + VIN * 2.5mA 445mW = VIN * 150mA – 3.3 * 150mA + VIN * 2.5mA 445mW = VIN * 150mA – 495mW + VIN * 2.5mA 950mW = VIN * 152.5mA VIN(max) = 6.23V Therefore, a 3.3V application at 150mA of output current can accept a maximum input voltage of 6.23V in a SOT25 package. Fixed Output Regulator Design VIN TS5205CX5xx TS5205CX5xx VOUT VIN COUT 2.2µF EN off CBYP 470pF Ultra Low Noise Fixed Voltage Application COUT 2.2µF on Low Noise Fixed Voltage Application Includes a 470pF capacitor for low noise operation and shows EN connected to IN for an application where enable/shutdown is not required. COUT= 2.2µF minimum. Document Number: DS_P0000197 VOUT An example of a low noise configuration where bypass is not required. COUT= 2.2µF minimum 6 Version: I15 TS5205 Taiwan Semiconductor PACKAGE OUTLINE DIMENSIONS (Unit: Millimeters) SOT-25 SUGGESTED PAD LAYOUT (Unit: Millimeters) MARKING DIAGRAM H = Device Code X = Voltage Code 5 =5.0V S =3.3V K =2.5V 0 Y = Year Code M = Month Code for Halogen Free Product O =Jan P =Feb Q =Mar R S =May T =Jun U =Jul V W =Sep X =Oct Y =Nov Z L = Lot Code (1~9, A~Z) Document Number: DS_P0000197 7 =Adj =Apr =Aug =Dec Version: I15 TS5205 Taiwan Semiconductor Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. Document Number: DS_P0000197 8 Version: I15