TS29100/1/2 1.0A Ultra Low Dropout Positive Voltage Regulator Low Dropout Voltage 0.4V typ. Enable Input Control Adjustable Output Error Flag Detection General Description The TS29100/1/2 series are using process with a PNP pass element for high current, high accuracy and low dropout voltage regulators. These regulator s feature 400mV(typ) dropout voltages and very low ground current, these devices also find applications in lower current and low dropout critical systems, where their tiny dropout voltage and ground current values are important attributes. The TS29100/1/2 series are fully protected against over current faults, reversed input polarity, reversed lead insertion, over temperature operation, positive and negative transient voltage spikes, logic level enable control and error flag which signals whenever the output falls out of regulation. On the TS29101 and TS29102, the enable pin may be tied to Vin if it is not required for enable control. This series are offered in 3-pin SOT-223 and 8-pin SOP pacakge. Ordering Information Features Dropout voltage typically 0.4V @Io=1.0A Part No. Output current up to 1.0A Low ground current Operating Temp. (Junction) TS29100CWxx Output voltage trimmed before assembly TS29101CSxx Extremely fast transient response SOT-223 o -40 ~ +125 C SOP-8 TS29102CSxx +60V Transient peak voltage Package TS29102CS -20V Reverse peak voltage Note: Where xx denotes voltage option, available are 12V, 5.0V, 3.3V and 2.5V. Leave blank for adjustable version. Contact factory for additional voltage options. Zero current shutdown mode Error flag signals output out of regulation Internal current limit Thermal shutdown protection Applications Battery power equipment High efficiency linear power supplies Automotive electronics High efficiency post regulator for switching supply High efficiency “Green” computer system Absolute Maximum Rating (Note 1) Input Supply Voltage (Note 2) Operation Input Voltage Power Dissipation (Note 3) Operating Junction Temperature Range -20V ~ +60 V Vin (operate) 26 V PD Internally Limited TJ Storage Temperature Range TSTG o Lead Soldering Temperature (260 C) TS29100/1/2 Vin -40 ~ +125 C -65 ~ +150 o C 5 1-1 W o 2003/12 rev. A S Electrical Characteristics Vin = Vout + 1V, Venable= 2.4V, IL = 10mA, Co = 10uF, Adjustable versions are programmed to 5V output, Ta = 25 oC unless otherwise specified. Parameter Conditions Min Typ Max 0.990|Vo| 12 / 5.0 1.010|Vo| 0.980|Vo| 3.3/ 2.5 1.020|Vo| V Input Supply Voltage -- -- 26 V Output Voltage Temperature -- 20 100 ppm/ oC Output Voltage Output Voltage 10mA ≤ IL ≤ 1.0A, Unit Vo+1V ≤ Vin ≤ 26V Coefficient Line Regulation Vo+1V ≤ Vin ≤ 26V -- 0.05 0.5 % Load Regulation 10mA ≤ IL ≤ 1.0A -- 0.2 1.0 % Dropout Voltage (Note 4) IL=100mA -- 100 200 IL=500mA -- 200 IL=1.0A -- 400 600 IL=500mA -- 4 -- IL=1.0A -- 10 20 Short Circuit Current (Note 6) Vout=0 -- 2.0 -- Output Noise, CL=2.2uF -- 600 -- 10Hz to 100KHz, IL=100mA CL=10uF -- 400 -- CL=33uF -- 260 -- 0.980|Vo| 1.24 1.020|Vo| Quiescent Current (Note 5) mV mA A uVrms Reference (TS29102CS) Reference Voltage Reference Voltage 10mA ≤ IL ≤ 1.5A, 0.970|Vo| 1.030|Vo| V 2.3V ≤ Vin ≤ 26V Adjust Pin Bias Current Reference Voltage Temperature (Note 7) -- 40 80 nA -- 20 -- ppm/ oC -- 0.1 -- nA/ oC Coefficient Adjust Pin Bias Current Temperature Coefficient Flag Output (TS29101CS) Output Leakage Current VOH=26V -- -- 2 uA Output Low Voltage Vin=4.5V, IOL=250uA -- -- 300 mV Upper Threshold Voltage (Note 8) 40 60 -- mV Lower Threshold Voltage (Note 8) -- 75 95 mV Hysteresis (Note 8) -- 15 -- mV Low (OFF) -- -- 0.8 V High (ON) 2.4 -- -- Ven=26V -- -- 750 Ven=0.8V -- -- 5 Regulator Output Current Ven ≤ 0.8V, Vin ≤ 26V, -- 10 500 Shutdown Vout=0 Enable Input (TS29101 / TS29102) Input Logic Voltage Enable Pin Input Current TS29100/1/2 2-2 2003/12 rev. A uA uA Thermal Performance Condition Package type Typ Thermal Resistance SOT-223 15 Junction to Ambient SOP-8 20 Unit o C/W Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed specifications and test conditions see the Electrical Characteristics. Note 2: Maximum positive supply voltage of 60V must be limited duration (<100mS) and duty cycle (<1%). Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to ambient thermal resistance, θja, and the ambient temperature, Ta. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective value of θja can be reduced by using a heatsink. Note 4: 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. Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current and output load current. Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 1.0A at the maximum specified temperature. Note 7: 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. Specification are for a 200mA load pulse at Vin=20V (a 4W pulse) for T=10mS Note 8: Comparator thresholds are expressed in terms of a voltage differential at the adjust terminal below the nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = Vout / Vref = (R1+R2) / R2. For example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V / 1.24V = 384mV. Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed. TS29100/1/2 3-3 2003/12 rev. A Block Diagram TS29100 TS29101 & TS29102 * Feedback network is fixed output versions only (TS29101CSxx ) ** Adjustable output version only (TS29102CS) TS29100/1/2 4-4 2003/12 rev. A Pin Assignment Pin No. TS29100 Pin Pin TS29101 TS29102 Configuration Description 1 1 Enable Enable (input): TTL/COMS compatible input. Logic high is enable; logic low or open is shutdown 1 2 2 2 5,6,7,8 5,6,7,8 Input Unregulated input: +26V maximum supply Ground Ground: Ground pin and TAB/heatsink are internally connected. 3 3 3 4 Output Regulator output Flag Error Flag (output): Open-collector output. Active low indicates an output fault condition. 4 Adjust Adjustment input: Feedback input. Connect to resistive voltage-divider network. Typical Application Circuit TS29100 TS29101 TS29102 TS29100/1/2 5-5 2003/12 rev. A Application Information Application Information Adjustable Regulator Design The TS29100/1/2 series are high performance with low The adjustable regulator versions (TS29102) is allow dropout voltage regulator suitable for moderate to high to programming the output voltage anywhere between current 1.25 and the 26V maximum operating rating of the and voltage regulator application. Its 4000mA(typ) dropout voltage at full load and over family. temperature makes it especially valuable in battery Two resistors are used. Resistors can be quite large power systems and as high efficiency noise filters in up to 1MΩ, because of the very high input impedance post and low bias current of the sense comparator, the regulator applications. Unlike normal NPN transistor design, where the base to emitter voltage resistor values are calculated by: drop and collector to emitter saturation voltage limit the minimum dropout voltage, dropout performance of the PNP output of these devices is limited only by low Vce saturation voltage. The TS29100/1/2 series is fully protected from damage due to fault conditions. Linear current limiting is provided. Output current during overload conditions is constant. Thermal shutdown the device when the die R1 = R2 * [(Vout / 1.24) – 1] temperature exceeds the maximum safe operating Where is Vout the desired output voltage. Above temperature. Transient protection allows device survival application even when the input voltage spikes above and below Applications with widely varying load currents may nominal. The output structure of these regulators allows scale the resistors to draw the minimum load current voltages in excess of the desired output voltage to be required for proper operation. applied without reverse current flow. Error Flag Capacitor Requirement TS29101 versions feature an Error Flag, which looks at The TS29100/1/2 series requires an output capacitor to the output voltage and signals an error condition when maintain stability and improve transient response is this voltage drops 5% below its expected value. The necessary. The value of this capacitor is dependent error flag is an open-collector output that pulls low upon the output current, lower currents allow smaller under fault conditions. It may sink 10mA. Low output capacitors. TS29100/1/2 series regulators are stable voltage signifies a number of possible problems, with the 10uF minimum capacitor value at full load. including an over-current fault (the device is in current Where the regulator is powered from a source with high limit) and low input voltage. The flag output is AC impedance, a 0.1uF capacitor connected between inoperative input and ground is recommended. The capacitor conditions. should have good characteristics to above 250KHz. The Enable Input capacitance values will be help to improved transient response, ripple rejection and output noise. during shows over component temperature definition. shutdown TS29101 and TS29102 versions feature an enable (EN) input that allows ON/OFF control of the device. Minimum Load Current Special design allows “zero” current drain when the The TS29100/1/2 series is specified between finite loads. If the output current is too small leakage currents dominate and the output voltage rises. A 10mA minimum load current swamps any expected leakage current across the operating temperature range. TS29100/1/2 circuit 6-6 device is disabled–only microamperes of leakage current flow. The EN input has TTL/CMOS compatible thresholds for simple interfacing with logic, or may be directly tied to ≤30V. Enabling the regulator requires approximately 20uA of current. 2003/12 rev. A Application Information (continues) Power SOP-8 Thermal Characteristics Power Dissipation TS29101/2 series’ performance is its power SOP-8 From under curves, the minimum area of copper necessary for the par to operate safely can be determined. The maximum allowable temperature rise must be calculated to determine operation along which curve. package featuring half the thermal resistance of a standard SOP-8 package. Lower thermal resistance means more output current or higher input voltage for a given package size. Lower thermal resistance is achieved by connect the four ground pins with the die attached pad to create a single piece electrical and thermal conductor. This concept have been used by MOSFET production for years, proving very reliable and cost effective for the user. As under: Thermal resistance consists of two main elements, Θjc (junction to case) and Θca (case to ambient). Using the power SOP-8 reduces Θca, the total thermal resistance, Θja (junction to ambient) is the limiting factor in calculating the maximum power dissipation capability of the device. Typically, the power SOP-8 have a Θjc of 20oC/W dramatically , this is significantly lower than the standard SOP-8 which is typically 75oC/W. Θca is reduced because pin 5~8 can be soldered directly to a ground plane which significantly reduces the case to sink and sink to ambient thermal resistance. TS29100/1/2 7-7 2003/12 rev. A SOT-223 Mechanical Drawing A B C J K D F G H 0.835 6.700 1.035 7.300 0.032 0.263 0.041 0.287 I J K 0.250 10° 1.550 0.355 16° 1.800 0.010 10° 0.061 0.014 16° 0.071 DIM I H A B C D E F SOT-223 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 6.350 6.850 0.250 0.270 2.900 3.100 0.114 0.122 3.450 3.750 0.136 0.148 0.595 0.635 0.023 0.025 4.550 4.650 0.179 0.183 2.250 2.350 0.088 0.093 G E SOP-8 Mechanical Drawing A DIM 9 16 B 1 P 8 G R C D TS29100/1/2 M F K 8-8 SOP-8 DIMENSION MILLIMETERS INCHES A B C MIN 4.80 3.80 1.35 MAX 5.00 4.00 1.75 D F G K M P R 0.35 0.49 0.40 1.25 1.27 (typ) 0.10 0.25 0o 7o 5.80 6.20 0.25 0.50 MIN 0.189 0.150 0.054 MAX 0.196 0.157 0.068 0.014 0.019 0.016 0.049 0.05 (typ) 0.004 0.009 0o 7o 0.229 0.244 0.010 0.019 2003/12 rev. A