TS2950 150mA Ultra Low Dropout Voltage Regulator TO-92 Pin Definition: 1. Output 2. Ground 3. Input General Description The TS2950 are low power voltage regulators. These devices are excellent choice for use in battery-powered applications such as cordless telephone, radio control systems, and portable computers. The TS2950 is features very low quiescent current (75µA Typ.) and very low drop output voltage (Typ. 40mV at light load and 380mV at 100mA), extremely good load and line regulation 0.05% typ. and very low output temperature coefficient, making the TS2950 useful as a low-power voltage reference. Features ● ● ● ● ● ● ● ● Extremely low quiescent current Low dropout voltage Extremely tight load and line regulation Very low temperature coefficient Need only 1µF for stability Use as Regulator or Reference Stable with low-ESR output capacitors Current and thermal limiting Ordering Information Part No. TS2950CTxx B0 Package Packing TO-92 1kpcs / Bulk TS2950CTxx A3 TO-92 2kpcs / Ammo Note: Refer to detail ordering information table. Applications ● ● ● ● ● Battery powered systems SMPS Post-Regulator Voltage Reference Portable consumer equipment Radio control system Absolute Maximum Ratings Parameter Symbol Limit Unit Input Supply Voltage VIN - 0.3 ~ +30 V Power Dissipation Pd Internally Limited Operating Junction Temperature Range TJ W - 40 ~ +125 o C Storage Temperature Range TSTG -65 ~ +150 o Lead Temperature (Soldering 5 second) TSTG 260 o Thermal Resistance Junction to Ambient RӨJA Thermal Resistance Junction to Case RӨJC 1/10 C C 160 o 80 o C/W C/W Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator Electrical Characteristics (VIN=VOUT +1V, TA=25oC, unless otherwise specified.) Parameter Test Conditions (note 2) Min Typ Max TJ=25 C |0.985| 5.0 |1.015| Full Operating temp |0.980| 3.3 |1.020| 100µA≤ IL ≤100mA |0.975| 3.0 |1.025| -- 50 150 -- 20 100 o o Output Voltage Output Voltage Temperature Coefficient (Note 1) Unit V ppm/ C Line Regulation (Note 3) 6V≤ VIN ≤30V (Note 4) -- 0.04 0.2 % Load Regulation (Note 3) 100µA≤ IL ≤100mA -- 0.1 0.3 % 50 80 mV 380 450 mV 75 120 µA 8 12 mA Dropout Voltage (Note 5) Ground Current IL=100µA -- IL=100mA IL=100uA -- IL=100mA Dropout Ground Current VIN= 4.5V, IL= 100µA -- 110 170 µA Current Limit VOUT= 0 -- 160 250 mA -- 0.05 0.2 %W CL= 1µF -- 430 -- CL= 200µF -- 160 -- CL= 3.3µF -- 100 -- Thermal Regulation Output Noise, 10Hz to 100KHz µV/ rms Note 1: Output voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range. o Note 2: Unless otherwise specified all limits guaranteed for Tj= 25 C, Vin= 6V, IL= 100µA and CL= 100µF. Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 4: line regulation is guaranteed by design to 0.2%. Note 5: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential at very low value of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be taken in to account. 2/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator Application Hints External Capacitors For the stability of the TS2950 is requires a 1µF (0.22µF is recommended for 3.0V & 3.3V) or greater capacitor between output and ground. Oscillation could occur without this capacitor. The tantalum or aluminum electrolytic o works fine; could use the film type work but are not cost efficient. For the operation of below -25 C solid tantalum is o recommended since the many aluminum type have electrolytes the freeze at about -30 C. The ESR of about 5Ω or less and resonant frequency above 500KHz are most important parameter in the value of Capacitor. The Capacitors value can be increased without any limit. At lower values of output current, less output capacitance is required for stability. For the currents below 10mA the value of capacitor can be reduce to 0.33µF and 0.1µF for 1mA. The TS2950 is not like other low dropout regulators will remain stable and regulation with no load in addition to the internal voltage divider. This feature very important in application, it is like CMOS RAM keep-alive. If at the input of TS2950 connected to battery or between AC filter capacitor and input is 10 inches wire then 1uF tantalum or aluminum electrolytic capacitor should be connected between input and ground. This could cause more problems when using higher value of external to set the output voltage. To fix this problem increasing output capacitance to 3.3µF. Reducing Output Noise It could be an advantage to reduce the AC noise present at the output. One method is to reduce the regulator bandwidth by increasing the value of the output capacitor. This is the only method that noise could reduce on the TS2950, but is relatively inefficient, as increasing capacitor from 1µF to 220µF only decreases the noise from 430µV to 160µVrms for a 100KHz bandwidth at 5V output. the output capacitor must be increased to 3.3µF to maintain stability. These change the output noise from 430µV/rms for a 100 kHz bandwidth 5V, 3.3V & 3V output. Block Diagram and Typical Applications Circuit 3/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator Electrical Characteristics Curve (Ta = 25oC, unless otherwise noted) Figure 1. Line Regulation vs. Input Voltage Figure 2. Load Regulation vs. Output Current Figure 3. Ground Pin Current vs. Output Current Figure 4. Ground Pin Current vs. Input Voltage Figure 5. Dropout Voltage vs. Output Current Figure 6. Load Transient Response 4/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator Ordering information Voltage TO-92 3.3V TS2950CT33 B0 TS2950CT33 A3 5V TS2950CT50 B0 TS2950CT50 A3 Packing code information Packing B0: 1kpcs / Bulk A3: 2kpcs / Ammo 5/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator TO-92 Mechanical Drawing Unit: Millimeters Marking Diagram XX = Voltage Code (50 = 5.0V, 33 = 3.3V) Y = Year Code M = Month Code (A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oct, K=Nov, L=Dec) L = Lot Code 6/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator TO-92 Ammo Pack Specification TO-92 Tape Leader and Trailer TO-92 Tape Dimension Item Description Base of Package to Lead Bend Symbol b Dimension 3.0 (typ.) Component Height Ha 23.57 (typ.) Lead Clinch Height H0 16.0 ±0.5 Component Base Height H1 19.0 ±0.5 Component Top to Lead Bend H2 8.0 (max) Component Alignment (side / side) Pd 1.02 (max) Component Alignment (front / back) Hd 0.79 (max) Feed Hole Pitch P0 12.7 ±0.3 Hole Center to Component Center P1 6.25 ±0.4 Lead Spread F1 2.5 ±0.3 Lead Thickness d 0.46 (typ.) Cut Lead Length L 10.9 (max) Taped Lead Length L1 5.31 (typ.) Taped Lead Thickness t 0.81 ±0.2 Carrier Tape Thickness t1 0.5 ±0.2 Carrier Tape Width W 18.0 ±0.5 Hold – down Tape Width W0 0.5 ±0.2 Hold – down Tape position W1 9.0 ±0.7 Feed Hole Position W2 6.0 ±0.2 Sprocket Hole Diameter D0 4.0 ±0.2 7/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator Lead Spring Out S 0.1 (max) Note: All dimensions are in millimeter. 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. 8/10 Version: F14 TS2950 150mA Ultra Low Dropout Voltage Regulator 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. 9/10 Version: F14