T S5 2 0 1
200mA Low Noise LDO Voltage Regulator with Enable
SOP-8
Pin Definition: 1. Output 2. ADJ / N/C 3. Ground 4. N/C 8. Input 7. N/C 6. N/C 5. Enable
General Description
TS5201 is an efficient linear voltage regulator with ultra low noise output, very low dropout voltage ( typically 17mV at light loads and 165mV at 200mA) , and very low power consumption (600uA at 100mA), providing high output current even w hen the application requires very low dropout voltage. The Chip Enable (EN) includes a C MOS or TTL compatible input allows the output to be turned off to prolong battery life. When shutdown, power consumption drops nearly to zero. TS5201 is included a 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.
Features
● ● ● ● ● ● ● ● Ultra Low Noise Output Output Current up to 200mA Low Dropout Voltage Low Power Consumption “Zero” Off-mode Current Logic Controlled Electronic Enable Inter nal Current Limit Thermal Shutdown Protection
Typical Application Circuit
TS5201C Sxx VOUT VIN COUT 2.2uF EN on of f
Application
● ● ● ● ● ● ● Cellular Telephones Palmtops, Notebook Computers Battery Powered Equipment Consumer and Personal Electr onics SMPS Post Regulator and DC to DC Modules High-efficiency Linear Power Supplies Portable Application COUT 2.2uF R1 VOUT TS5201C S
VIN
Ordering Information
Part No. Package Packi ng
TS5201C Sxx RF SOP-8 2.5Kpcs / 13” Reel Note: W here xx denotes voltage option, available are 50=5.0V 33=3.3V 30=3.0V 25=2.5V Leave blank for adjus table version. Contact fac tor y for additional voltage options.
EN R2 on of f Adjus table Version: VOUT = 1.24 (R1+R2) /R2 (Adjus table output range up to 8V)
EN (pin3) may be connec ted directly to VIN (pin 1) Low noise operation: CBYP =470pF, COUT >2.2uF Basic operation: CBYP =not used, COUT >2uF
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Version: A07
T S5 2 0 1
200mA Low Noise LDO Voltage Regulator with Enable
Absolute Maximum Rating (Note 1)
Parameter
Input Supply Voltage Enable Input Voltage Power Dissipation (Note 2) Thermal R esistance Operating Junction Temperature R ange Storage Temperature Range Lead Soldering Temperature (260 C)
o
Symbol
VIN VCE PD ӨJ A TJ TSTG
Val ue
- 20~ + 20 - 20~ + 20 Inter nal limited 220 0 ~ +1 2 5 - 6 5 ~ +1 5 0 5
Unit
V V
o
C/W
o o
C C
S
Recommend Operating Rating (Note 3)
Input Supply Voltage Enable Input Voltage VIN VCE +2.5 ~ +16 0 ~ VI N V V
Electrical Characteristics VIN=Vo+1V, Io=100uA, COUT=1uF, Vce≥2V, TJ = 25oC, unless otherwise specified.
Parameter
Conditions VIN =Vo + 1V (Note 4) Vo+1V ≤ VIN ≤ 16V 0.1mA ≤ Io ≤ 200mA Io=100uA Io=50mA Io=100mA Io=200mA VIN ≤0.4V (shutdown) VIN ≤0.18V (shutdown) Io=100uA Vce≥2V Io=50mA Io=100mA
Min 0.99| Vo| -----------------
Typ VOUT 40 0.005 0.02 17 110 140 165 0.01 -80 350 600 1300 300 75 0.05 260
Max 1.01| Vo| -0.05 0.2 50 150 250 275 1 5 125 600 1000 1900 500 ----
Unit V o ppm / C %/V %/V
Output Voltage Output Voltage Temp. Coefficient Line R egulation Load R egulation (Note 5)
Dropout Voltage (Note 6)
mV
Quiescent Current
uA
Ground Pin C urrent (Note 7)
uA
Output Current Limit Power Supply Rejec tion Ratio Thermal R egulation (Note 8) Output Noise
Io=200mA VOUT=0V At f=100Hz , Io=100uA, Io=50mA, COUT=2.2uF, 470pF from bypass to Ground Regulation shutdown Regulation enable VIL≤ 0.4V VIH≥ 2.0V
mA dB %/W nV
--
Enable functi on
Enable Input Logic-Low Voltage Enable Input Logic-High Voltage Enable Input Current -2.0 ----0.01 5 0.4 --1 20 V V uA
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Version: A07
T S5 2 0 1
200mA Low Noise LDO Voltage Regulator with Enable
Electrical Specification (Continue)
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] + ӨJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the r egulator will go into thermal shutdown. 3. The device is not guaranteed to func tion outside its operating rating. 4, Output voltage temperatur e coefficient is defined as the worst case voltage change divided by the total temperature r a nge. 5, R egulation is measured at constant junction temperature using low duty cycle pulse tes ting. Par ts are tested for load regulation in the load range from 1mA to 200mA (5V version) and 1mA to 120mA (VOUT2V) enable ( EN) input that allows ON /OFF control of the regulator. Current drain reduces to “zero” when the device is shutdow n, with only micro-amperes of leakage current. The EN is compatible with C MOS logic interfacing. EN may be dir ectly tied to VIN and pulled up to the maximum supply voltage.
Input Capacitor Requirement
An input capacitor of 0.1uF 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 TS5201 series requires an output capacitor to maintain s tability and improve transient response is nec essary. 2.2uF minimum is recommended. Larger values impr ove 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. Mos t of tantalum or aluminum electrolytic capacitors are adequate; film types will work . Sinc e many o aluminum elec trolytic have electroly tes that freeze at about –30 C , solid tantalums are recommended for operation o below –25 C . At low er values of output current, less output capacitance is required for output s tability . The capacitor can be reduced to 0.47uF for current below 10mA or 0.33uF for currents below 1mA.
Refer ence Bypass Capacitor
Bypass is connec ted to the internal voltage referenc e. A 470pF capacitor (CBYPASS) connected from Bypass to Ground quiets this reference, providing a s ignificant reduction in output noise. CBYPASS reduces the regulator phase margin; when using CBYPASS, output capacitors of 2.2uF or greater are generally required to maintain stability . The s tar up speed of the TS5201 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.
No Load Stability
The TS5201 series will remain s table and in regulation w ith no load, unlike many other voltage regulators. This is especially important in C MOS R AM keep alive applications.
Adj ustable Regulator Design
The adjustable regulator versions can be adjusted to a spec ific output voltage by using two ex ternal r esistors to programming the output voltage anywher e between 1.25 and the 8V maximum operating rating of the family. Two resistors are used. Resis tors can be quite large up to 470kΩ , because of the very high input impedance and low bias current of the sense comparator, the resis tor values are calculated by: A capacitor from Adjus t to Ground provides greatly improved noise per for mance. VOUT R1 EN R2 on of f Adjus table Version: VOUT = 1.24 (R1+R2) /R2 (Adjus table output range up to 8V) VIN
COUT 2.2uF
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Version: A07
T S5 2 0 1
200mA Low Noise LDO Voltage Regulator with Enable
Application Information (Continue)
Dual Supply Operati on
When used in dual supply systems where the regulator load is r eturned to a negative supply , the output voltage must be diode c lamped to ground.
Ther mal Characteristi cs
TS5201 series is designed to provide 200mA (5V version) of continuous current in a very s mall 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 junc tion-ambient ther mal resistance of the dev ice and the following basic equation: PD(MAX) = [ TJ(MAX) – TA ] /ΘJA TJ(MAX) is the max imum junc tion temperature of the die(125 C), and Ta is the ambient operating temper ature. ΘJA is layout dependent, the ac tual pow er dissipation of the regulator circuit can be deter mined using the equation: PD = (VIN – VOUT) * IOUT + VIN * IGND Subs tituting 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 TS5201C S33 at room temperature w ith a minimum footprint layout, the maximum input voltage for a set output current can be determined as follows: o o o PD(MAX) = (12 5 C – 25 C) / 22 0 C /W PD(MAX) = 45 5 mW The junction to ambient ther mal resistance for the minimum footprint is 220 C/W, the maximum power dis sipation 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 charac teristics table, the max imum gr ound curr ent for 120mA output current is 2.5mA. 445mW = ( VIN – 3.3V ) * 200mA + VIN * 2.5mA 445mW = VIN * 200mA – 3.3 * 200mA + VIN * 2.5mA 445mW = VIN * 200mA – 495mW + VIN * 2.5mA 950mW = VIN * 152.5mA VIN ( max) = 6.23V Therefore, a 3.3V application at 200mA of output curr ent can accept a maximum input voltage of 6.23V in a SOP-8 pac k age.
o o
Noise Reducti on Capacitors
On adjustable devices , a capacitor from ADJ to GND will decrease high frequency noise on the output. See following figure:
Mi nimum Load
The TS5201 will remain stable and in regulation w ith no load unlike many other voltage regulators. This is especially impor tant in C MOS R AM keep-alive applications.
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Version: A07
T S5 2 0 1
200mA Low Noise LDO Voltage Regulator with Enable SOP-8 Mechanical Drawing
DIM A B C D F G K M P R
SOP-8 DIMEN SION MILLIMETER S INCH ES MIN MAX MIN MAX. 4.80 5.00 0.189 0.196 3.80 4.00 0.150 0.157 1.35 1.75 0.054 0.068 0.35 0.49 0.014 0.019 0.40 1.25 0.016 0.049 1.27BSC 0.05BSC 0.10 0.25 0.004 0.009 0º 7º 0º 7º 5.80 6.20 0.229 0.244 0.25 0.50 0.010 0.019
Marking Diagram
XX = Voltage Code (50 = 5.0V, 33 = 3.3V, 25 = 2.5V) Leave the blank as Adjustable version Y = Year Code M = Month C ode (A=Jan, B =Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oc t, K=Nov , L=Dec) L = Lo t C ode
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Version: A07
T S5 2 0 1
200mA Low Noise LDO Voltage Regulator with Enable
Notice
Specifications of the produc ts displayed herein are s ubject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Infor mation contained herein is intended to pr ovide a product description only. N o license, express or implied, to any intellectual proper ty 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 par ticular purpose, merchantability, or infringement of any patent, copyright, or other intellectual proper ty right. The products shown herein are not designed for use in medical, life-saving, or life-sus taining applications . C ustomers 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.
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