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www.sii-ic.com FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION © SII Semiconductor Corporation, 2016-2017 Rev.1.1_00 The S-19253xxxH Series developed by using high-withstand voltage CMOS process technology, is a positive voltage regulator with high-accuracy output voltage and high output current. A built-in overcurrent protection circuit to limit overcurrent of the output transisto r and a built-in thermal shutdown circuit to limit heat are included. Also, the S-19253 xxxH Series includes the soft-start functi on to adjust the output voltage rising time at power-on or at the time wh en the ON / OFF pin is set to ON. Caution This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the purpose, contact to SII Semiconductor Corporation is indispensable. Features
- Output voltage 1.0 V to 5.5 V, selectable in 0.05 V step
- Input voltage: 2.5 V to 6.5 V
- Output voltage accuracy: ±3.0% (Tj = −40°C to +105°C)
- Dropout voltage: 0.09 V typ. (2.6 V output product, at I OUT = 200 mA)
- Current consumption: During operation: 120 μA typ., 150 μA max. (Tj = −40°C to +105°C) During power-off: 0.1 μA typ., 4.5 μA max. (Tj = −40°C to +105°C)
- Output current: Possible to output 500 mA (at V IN ≥ VOUT(S) + 1.0 V)*1
- Ripple rejection: 60 dB typ. (at f = 1.0 kHz)
- Built-in overcurrent protection circuit: Limits overcurrent of output transistor.
- Built-in thermal shutdown circuit: Detection temperature 170 °C typ.
- Built-in soft-start circuit: Adjust s output voltage rising time at power-on or at the time when ON / OFF pin is set to ON. Adjustable type: tSS = 6.0 ms typ. (CSS = 10 nF) Soft-start time can be ch anged by the capacitor (C SS).
- Built-in ON / OFF circuit: Ensures long battery life.
- Built-in discharge shunt circuit: Discharges the electric charge of the output capacitor during power-off.
- Operation temperature range: Ta = −40°C to +105°C
- Lead-free (Sn 100%), halogen-free
- AEC-Q100 qualified*2 *1. Please make sure that the loss of the IC will not exceed the power dissipation when t he output current is large. *2. Contact our sales o ffice for details. Applications
- Constant-voltage power supply for electrical application for vehicle interior
- Constant-voltage power supply for home electric appliance
- For automotive use (a ccessory, car navigation system, car audio system, etc.) Package
- SOT-89-5
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 Block Diagram ON / OFF logic : Acti ve "H" Discharge shunt function : Available Pull-down resistor : Available Soft-start time : Changeable by capacitor (C SS) SSC VSS VOUT ON / OFF VIN Thermal shutdown circuit Overcurrent protection circuit ON / OFF circuit Reference voltage circuit Soft-start circuit *1. Parasitic diode Figure 1
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series AEC-Q100 Qualified This IC supports AEC-Q100 for operation temperature grade 2. Contact our sales office for details of AEC-Q100 reliability specification. Product Name Structure Users can select the output voltage for the S-19253xxxH Series. Refer to " 1. Product name " regarding the contents of product name, " 2. Package " regarding the package drawings and " 3. Product name list " for details of product names. 1. Product name S-19253 x xx H - U5T1 U Package abbreviation and IC packing specifications*1 U5T1: SOT-89-5, Tape Environmental code U: Lead-free (Sn 100%), halogen-free Operation temperature H: Ta = −40°C to +105°C Output voltage*2 10 to 55 (e.g., when the output voltage is 1. 0 V, it is expressed as 10.) Product type E *1. Refer to the tape drawing. *2. Contact our sales office when the product which has 0.05 V step is necessary. 2. Package Table 1 Package Drawing Codes Package Name Dimension Tape Reel SOT-89-5 UP005-A-P-SD UP00 5-A-C-SD UP005-A-R-SD 3. Product name list Table 2 Output Voltage SOT-89-5 1.2 V ± 3.0% S-19253E12H-U5T1U 1.8 V ± 3.0% S-19253E18H-U5T1U 3.3 V ± 3.0% S-19253E33H-U5T1U 5.0 V ± 3.0% S-19253E50H-U5T1U Remark Please contact our sales office for products with specifications other than the above output voltage.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 Pin Configuration 1. SOT-89-5 13 2 Top view Figure 2 Table 3 Pin No. Symbol Description
1 ON / OFF ON / OFF pin
2 VSS GND pin
3 SSC*1 Soft-start pin
4 VIN Input voltage pin
5 VOUT Output voltage pin
*1. Connect a capacitor between the SSC pin and the VSS pin. The soft-start time at power-on and at the time when the ON / OFF pin is set to ON can be adjusted according to the capacitance.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series Absolute Maximum Ratings Table 4 (Ta = +25°C unless otherwise specified) Item Symbol Abso lute Maximum Rating Unit Input voltage VIN V SS − 0.3 to VSS + 7 V VON / OFF V SS − 0.3 to VIN + 0.3 ≤ VSS + 7 V VSSC VSS − 0.3 to VIN + 0.3 ≤ VSS + 7 V Output voltage V OUT V SS − 0.3 to VIN + 0.3 ≤ VSS + 7 V Output current I OUT 550 mA Junction temperature T j −40 to +150 °C Operation ambient temperature T opr −40 to +105 °C Storage temperature T stg −40 to +150 °C Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Thermal Resistance Value Table 5 Item Symbol Condition Min. Typ. Max. Unit Junction-to-ambient thermal resistance *1 θja SOT-89-5 Board A − 119 − ° C/W Board B − 84 − ° C/W Board C − − − ° C/W Board D − 46 − ° C/W Board E − 35 − ° C/W *1. Test environment: compliance with JEDEC STANDARD JESD51-2A Remark Refer to " Power Dissipation" and "Test Board" for details.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 Electrical Characteristics Table 6 (1 / 2) (Tj = −40°C to +105°C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit Output voltage*1 VOUT(E) VIN = 2.5 V, IOUT = 100 mA V OUT(S) < 1.5 V VOUT(S) × 0.970 VOUT(S) VOUT(S) × 1.030 V 1 VIN = VOUT(S) + 1.0 V, IOUT = 100 mA 1.5 V ≤ VOUT(S) VOUT(S) × 0.970 VOUT(S) VOUT(S) × 1.030 V 1 Output current*2 IOUT VIN = 2.5 V V OUT(S) < 1.5 V 500*5 − − mA 3 VIN ≥ VOUT(S) + 1.0 V 1.5 V ≤ VOUT(S) 500*5 − − mA 3 Dropout voltage*3 Vdrop IOUT = 200 mA, Ta = +25°C 2.0 V ≤ VOUT(S) < 2.6 V − 0.52 − V 1 2.6 V ≤ VOUT(S) ≤ 5.5 V − 0.09 − V 1 Line regulation ΔVOUT1 ΔVIN • VOUT 2.5 V ≤ VIN ≤ 6.5 V, IOUT = 100 mA, Ta = +25°C VOUT(S) < 2.0 V − 0.05 0.2 %/V 1 VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V, IOUT = 100 mA, Ta = +25°C 2.0 V ≤ VOUT(S) − 0.05 0.2 %/V 1 Load regulation ΔVOUT2 VIN = 2.5 V, 1 mA ≤ IOUT ≤ 200 mA, Ta = +25°C VOUT(S) < 1.5 V − 15 30 mV 1 VIN = VOUT(S) + 1.0 V, 1 mA ≤ IOUT ≤ 200 mA, Ta = +25°C
1.5 V ≤ VOUT(S) − 15 30 mV 1
I SS1 VIN = 2.5 V, ON / OFF pin = ON, no load VOUT(S) < 1.5 V − 120 150 μA2 VIN = VOUT(S) + 1.0 V, ON / OFF pin = ON, no load 1.5 V ≤ VOUT(S) − 120 150 μA2 Current consumption during power-off ISS2 VIN = 2.5 V, ON / OFF pin = OFF, no load VOUT(S) < 1.5 V − 0.1 4.5 μA2 VIN = VOUT(S) + 1.0 V, ON / OFF pin = OFF, no load 1.5 V ≤ VOUT(S) − 0.1 4.5 μA2 Input voltage V IN − 2.5 − 6.5 V −
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series Table 6 (2 / 2) (Tj = −40°C to +105°C unless otherwise specified) Item Symbol Condition Min. Typ. Max. Unit Test Circuit ON / OFF pin input voltage "H" VSH VIN = 2.5 V, RL = 1 kΩ, determined by VOUT output level VOUT(S) < 1.5 V 2.1 − − V 4 VIN = VOUT(S) + 1.0 V, RL = 1 kΩ, determined by VOUT output level 1.5 V ≤ VOUT(S) 2.1 − − V 4 ON / OFF pin input voltage "L" VSL VIN = 2.5 V, RL = 1 kΩ, determined by VOUT output level VOUT(S) < 1.5 V − − 0.6 V 4 VIN = VOUT(S) + 1.0 V, RL = 1 kΩ, determined by VOUT output level 1.5 V ≤ VOUT(S) − − 0.6 V 4 ON / OFF pin ON / OFF pin input current "L" ISL V IN = 6.5 V, VON / OFF = 0 V −0.1 − 0.1 μA4 Ripple rejection |RR| VIN = 3.0 V, f = 1 kHz, ΔVrip = 0.5 Vrms, IOUT = 100 mA 1.0 V ≤ VOUT(S) < 1.5 V − 60 − dB 5 1.5 V ≤ VOUT(S) < 2.0 V − 55 − dB 5 VIN = VOUT(S) + 1.0 V, f = 1 kHz, ΔVrip = 0.5 Vrms, IOUT = 100 mA 2.0 V ≤ VOUT(S) < 2.6 V − 55 − dB 5 2.6 V ≤ VOUT(S) ≤ 5.5 V − 50 − dB 5 Short-circuit current Ishort VIN = 2.5 V, ON / OFF pin = ON, VOUT = 0 V, Ta = +25°C VOUT(S) < 1.5 V − 240 − mA 3 VIN = VOUT(S) + 1.0 V, ON / OFF pin = ON, V OUT = 0 V, Ta = +25°C
1.5 V ≤ VOUT(S) − 240 − mA 3
detection temperature TSD Junction temperature − 170 − °C − Thermal shutdown release temperature TSR Junction temperature − 135 − °C − Discharge shunt resistance during power-off RLOW V IN = 6.5 V, VOUT = 0.1 V − 100 − Ω 6 ON / OFF pin pull-down resistance RPD − 1.3 4.0 12 M Ω 4 *1. VOUT(S): Set output voltage VOUT(E): Actual output voltage Output voltage when fixing I OUT (= 100 mA) and inputting 2.5 V or V OUT(S) + 1.0 V. *2. The output current at which the output voltage becomes 95% of V OUT(E) after gradually increasing the output current. *3. Vdrop = VIN1 − (VOUT3 × 0.98) VIN1 is the input voltage at which th e output voltage becomes 98% of V OUT3 after gradually decreasing the input voltage. VOUT3 is the output voltage when V IN = VOUT(S) + 1.0 V and IOUT = 200 mA. *4. The dropout voltage is limited by the difference between the input voltage (min. value) and the set output voltage. In case of 1.0 V ≤ VOUT(S) < 1.5 V: 2.5 V − VOUT(S) = Vdrop In case of 1.5 V ≤ VOUT(S) < 2.0 V: (VOUT(S) + 1.0 V) − VOUT(S) = 1.0 V *5. Due to limitation of the power dissipation, this value ma y not be satisfied. Attention should be paid to the power dissipation when the output current is large. This specification is guaranteed by design.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 Standard Circuit CIN *1 CL Input Output GND Single GND VOUTVIN ON / OFF SSC VSS CSS *1. C IN is a capacitor for stabilizing the input. *2. C L is a capacitor for stabilizing the output. *3. C SS is a capacitor for soft-start. Figure 9 Caution The above connection diagram and constants will not guarantee successful operation. Perform thorough evaluation including the temperature characteristics with an actual application to set the constants. Condition of Application Input capacitor (CIN): A ceramic capacitor wi th capacitance of 2.2 μF or more is recommended. Output capacitor (CL): A ceramic capacitor wi th capacitance of 2.2 μF or more is recommended. Caution Generally, in a voltage regu lator, an oscillation may occur depe nding on the selection of the external parts. Perform thorough evaluation including the temperature characteristics with an actual application using the above capacitor s to confirm no oscillation occurs. Selection of Input Capacitor (CIN) and Output Capacitor (CL) The S-19253xxxH Series requires C L between the VOUT pin and the VSS pin for phase compensation. The operation is stabilized by a ceramic capacitor with capacitance of 2.2 μF or more. When using an OS capacitor, a tantalum capacitor or an aluminum electrolytic ca pacitor, the capacitance also must be 2.2 μF or more. However, an oscillation may occur depending on the equivalent series resistance (ESR). Moreover, the S-19253xxxH Series requires C IN between the VIN pin and the VSS pin for a stable operation. Generally, an oscillaiton may occur when a voltage regulato r is used under the conditon that the impedance of the power supply is high. Note that the output voltage tr ansient characteristics varies depending on the capacitance of C IN and CL and the value of ESR. Caution Perform thorough evaluation including the temperature characteristics with an actual application to select C IN and CL. Selection of Capacitor for Soft-start (C SS) The S-19253xxxH Series requires the capacitor for soft-start (C SS) between the SSC pin and the VSS pin. Over the entire temperature range, the S-19253xxxH Series operates stably with a ceramic capacitor of 0.68 nF or more. According to C SS capacitance, the rising speed of the output voltage is adjustable. The time that the output voltage rises to 99% is 6.0 ms typ. at C SS = 10 nF. The recommended value for applications is 0.68 nF ≤ C SS ≤ 168 nF, however; define the values by sufficient evaluation incl uding the temperature characteristics under the usage condition.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series Explanation of Terms 1. Low dropout voltage regulator This is a voltage regulator which made dropout voltage small by its built-in low on-resistance output transistor. 2. Output voltage (V OUT) This voltage is output at an accuracy of ±3.0% when the input voltage, the ou tput current and the temperature are in a certain condition *1. *1. Differs depending on the product. Caution If the certain condition is not satisfied, the output voltage may exceed the accuracy range of ±3.0%. Refer to " Electrical Characteristics" and " Characteristics (Typical Data)" for details. 3. Line regulation ΔVOUT1 ΔVIN • VOUT Indicates the dependency of the output voltage against the input voltage. That is, the value shows how much the output voltage changes due to a change in the inpu t voltage after fixing ou tput current constant. 4. Load regulation ( ΔVOUT2) Indicates the dependency of the output voltage against the output current. That is, the value shows how much the output voltage changes due to a change in the ou tput current after fixing input voltage constant. 5. Dropout voltage (V drop) Indicates the difference between input voltage (V IN1) and the output voltage when th e output voltage becomes 98% of the output voltage value (V OUT3) at VIN = VOUT(S) + 1.0 V after the input voltage (V IN) is decreased gradually. Vdrop = VIN1 − (VOUT3 × 0.98)
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series 3. ON / OFF pin The ON / OFF pin controls the internal circuit and the output transistor in order to start and stop the regulator. When the ON / OFF pin is set to OFF, the internal circuit st ops operating and the output tr ansistor between the VIN pin and the VOUT pin is turned off, reducing current consumption significantly. Note that the current consumption incr eases when a voltage of 0.6 V to V IN − 0.3 V is applied to the ON / OFF pin. The ON / OFF pin is configured as shown in Figure 11. Since the ON / OFF pin is internally pulled down to the V SS pin in the floating status, the VOUT pin is set to the V SS level. Refer to " Electrical Characteristics " for the ON / OFF pin current. Table 7 ON / OFF Pin Internal Circuit VOUT Pin Voltage Current Consumption "H" : ON Operate Constant value*1 I SS1 "L" : OFF Stop Pulled down to VSS *3 ISS2 *1. The constant value is output due to the r egulating based on the set output voltage value. *2. Note that the IC's current consumption increases as much as current flows into the pull-down resistor when the ON / OFF pin is connected to the VIN pin an d the S-19253xxxH Series is operating (refer to Figure 11). *3. The VOUT pin voltage is pulled down to V SS due to the discharge shunt circuit (R LOW = 100 Ω typ.), the feedback resistors (R s and Rf) and a load. VSS VIN ON / OFF Figure 11
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 4. Discharge shunt function The S-19253xxxH Series has a built-in di scharge shunt circuit to discharge t he output capacita nce. The output capacitance is discharged as follows so that the VOUT pin reaches the V SS level. (1) The ON / OFF pin is set to OFF level. (2) The output transistor is turned off. (3) The discharge shunt circuit is turned on. (4) The output capacitor discharges. The S-19253xxxH Series allows the VOUT pin to reach the V SS level rapidly due to the discharge shunt circuit. Output transistor: OFF ON / OFF pin: OFF VIN ON / OFF VSS ON / OFF circuit Discharge shunt circuit : ON VOUT *1. Parasitic diode Current flow GND S-19253xxxH Series Output capacitor (CL) Figure 12 5. Pull-down resistor The ON / OFF pin is internal ly pulled down to the VSS pin in the floating status, so the VOUT pin is set to the V SS level. Note that the IC's current consumption increases as much as current flows into the pull-down resistor of 4.0 MΩ typ. when the ON / OFF pin is connected to the VIN pin.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series 6. Overcurrent protection circuit The S-19253xxxH Series has a built-in over current protection circuit to limit the overcurrent of the output transistor. When the VOUT pin is shorted to the VSS pin, that is, at t he time of the output short-circuit, the output current is limited to 240 mA typ. due to the overcurrent protection circuit operati on. The S-19253xxxH Series restarts regulating when the output transistor is released from the overcurrent status. Caution This overcurrent protection circuit does not work as for thermal protection. For example, when the output transistor keeps the overcurrent status long at the time of output short-circuit or due to other reasons, pay attention to the conditions of the input voltage and the load current so as not to exceed the power dissipation. 7. Thermal shutdown circuit The S-19253xxxH Series has a bu ilt-in thermal shutdown circuit to limit ov erheating. When the junction temperature increases to 170 °C typ., the thermal shutdown circuit becomes the detection status, and the regulating is stopped. When the junction temperature decreases to 135 °C typ., the thermal shutdown circuit becomes the release status, and the regulator is restarted. If the thermal shutdown circuit becomes the detection status due to self-heati ng, the regulating is stopped and V OUT decreases. For this reason, the self-heating is limited and the temperature of the IC decreases. The thermal shutdown circuit becomes release status when the temperature of the IC decreas es, and the regulating is restarted after the soft-start operation is finished, thus the self-heating is generated again. Repeating this procedure makes the waveform of V OUT into a pulse-like form. This phenomenon contin ues unless decreasing either or both of the input voltage and the output current in order to reduce the internal power consumption, or decreasing the ambient temperature. Note that t he product may suffer physical damage such as deterioration if the above phenomenon occurs continuously. Caution When the heat radiation of the application is not in a good condition, the self-heating cannot be limited immediately, and the IC may suffer physical damage. Perform thorough evaluation with an actual application to confirm no problems happen. Table 8 Thermal Shutdown Circuit VOUT Pin Voltage Release: 135°C typ.*1 Constant value *2 Detection: 170°C typ.*1 Pulled down to V SS *1. Junction temperature *2. The constant value is output due to the r egulating based on the set output voltage value. *3. The VOUT pin voltage is pulled down to V SS due to the feedback resistors (R s and Rf) and a load.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 8. Soft-start function The S-19253xxxH Series has the built-in soft-start circuit to suppress the inrush current and overshoot of the output voltage generated at power-on or at the time when the ON / OFF pin is set to ON. The soft-start time (t SS) is the time period from when the output voltage rises slowly immediately after power-on or when the ON / OFF pin is set to ON until when the output voltage rises to 99%. Input voltage (VIN, VON / OFF ) Output voltage (VOUT(E) ) VOUT(E) × 0.99 Soft-start time (t SS) SSC pin voltage (VSSC) VIN t [ms] Figure 13 8. 1 Soft-start time t SS can be adjusted by the external capacitor (C SS) connected between the SSC pin and the VSS pin, and is calculated by using the following calculation. tSS [ms] = Soft-start coefficient *1 [ms / nF] × CSS [nF] + tD0 *2 [ms] *1. It is determined by charging the built-in constant current (approx. 2.1 μA) to CSS. *2. The delay time of internal capacitance. When the CSS value is sufficiently large, the t D0 value can be disregarded. When the ON / OFF pin is set to OFF, the electrical charge charged in C SS is discharged by the transistor of the discharge shunt circuit. Table 9 Soft-start Coefficient [ms / nF] Operation Temperature Min. Typ. Max. Tj = +105°C 0.398 0.539 0.690 Tj = +25°C 0.436 0.574 0.704 Tj = −40°C 0.467 0.604 0.717 Table 10 Delay Time of Internal Capacitnace (t D0) Operation Temperature Min. Typ. Max. Tj = −40°C to +105°C 0.032 ms 0.047 ms 0.108 ms Caution The above calculation will not guarantee successful operation. Perform thorough evaluation using the actual application including the temperature characteristics under the actual usage conditions to determine CSS capacitance. Refer to " Condition of Application" and " Characteristics (Typical Data)" for details.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series Precautions
- Generally, when a voltage regulator is used under the conditi on that the load current value is small (1 mA or less), the output voltage may increase due to the leakage current of an output transistor.
- Generally, when a voltage regulator is used under the condit ion that the temperature is high, the output voltage may increase due to the leakage curre nt of an output transistor.
- Generally, when the ON / OFF pin is used under the condit ion of OFF, the output volt age may increase due to the leakage current of an output transistor.
- Generally, when a voltage regulator is used under the condi tion that the impedance of the power supply is high, an oscillation may occur. Perform thorough evaluation in cluding the temperature characteristics with an actual application to select C IN.
- Generally, in a voltage regulator, an oscillation may oc cur depending on the selection of the external parts. The following use conditions are recomm ended in the S-19 253xxxH Series; however, perf orm thorough evaluation including the temperature characteristics with an actual application to select C IN and CL. Input capacitor (C IN): A ceramic capacitor wi th capacitance of 2.2 μF or more is recommended. Output capacitor (CL): A ceramic capacitor wi th capacitance of 2.2 μF or more is recommended.
- Generally, in a voltage regulator, the values of an overshoot and an undershoot in the output voltage vary depending on the variation factors of inpu t voltage start-up, input voltage fluctu ation, load fluctuation etc., or the capacitance of C IN or CL and the value of the equivalent series resi stance (ESR), which may cause a problem to the stable operation. Perform thorough evaluat ion including the temperature characteristics with an actual application to select CIN and CL.
- Generally, in a voltage regulator, an overshoot may occur in the output voltage moment arily if the input voltage steeply changes when the input voltage is started up, the soft- start operation is performed, the input voltage fluctuates, etc. Perform thorough evaluation including the temperature characteristics with an actual application to confirm no problems happen.
- Generally, in a voltage regulator, if the VOUT pin is steeply shorted with GND, a negative voltage exceeding the absolute maximum ratings may occur in the VOUT pin due to resonance phenomenon of the inductance and the capacitance including C L on the application. The resonance phenomenon is expected to be weakened by inserting a series resistor into the resonance path, and the negativ e voltage is expected to be limit ed by inserting a protection diode between the VOUT pin and the VSS pin.
- If the input voltage is started up steeply under the condition that the capacitance of C L is large, the thermal shutdown circuit may be in the detection status by self-heating due to the charge current to C L.
- Make sure of the conditions for the input voltage, output voltage and the load current so that the internal loss does not exceed the power dissipation.
- Do not apply an electrostatic discharge to this IC that ex ceeds the performance ratings of the built-in electrostatic protection circuit.
- When considering the output current va lue that the IC is able to output, ma ke sure of the output current value specified in Table 6 in " Electrical Characteristics " and footnote *5 of the table.
- Wiring patterns on the application related to the VIN pin, the VOUT pin and the VSS pin should be designed so that the impedance is low. When mounting C IN between the VIN pin and the VSS pin and C L between the VOUT pin and the VSS pin, connect the capacitors as close as possi ble to the respective destination pins of the IC.
- In the package equipped with heat sink of backside, mount the heat sink firmly. Since the heat radiation differs according to the condition of the application, perform thor ough evaluation with an actual application to confirm no problems happen.
- SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any infringement by products including this IC of patents owned by a third party.
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 Characteristics (Typical Data) 1. Output voltage vs. Output current (When load current increases) (Ta = +25°C) 1. 1 V OUT = 1.0 V 1. 2 V OUT = 3.0 V 0.6 0.2 0.8 0.4 0.0 1.0 1.2 VOUT [V] IOUT [mA] 200 400 600 800 10000 VIN = 2.5 V VIN = 3.0 V 1.8 0.6 2.4 1.2 0.0 3.0 3.6 VOUT [V] IOUT [mA] 200 400 600 800 10000 VIN = 3.5 V VIN = 4.0 V VIN = 5.0 V Remark In determining the output cu rrent, attention should be paid to the following. 1. The minimum output current value and footnote *5 of Table 6 in " Electrical Characteristics " 2. Power dissipation 2. Output voltage vs. Input voltage (Ta = +25°C) 2. 1 V OUT = 1.0 V 2. 2 V OUT = 3.0 V VOUT [V] VIN [V] 654321 0.8 0.6 0.9 0.7 0.5 1.0 1.1 IOUT = 1 mA IOUT = 50 mA IOUT = 100 mA VOUT [V] VIN [V] 65432 2.8 2.6 2.9 2.7 2.5 3.0 3.1 IOUT = 1 mA IOUT = 50 mA IOUT = 100 mA 3. Dropout voltage vs. Output current 4. Dropout voltage vs. Junction temperature 3. 1 V OUT = 3.0 V 4. 1 V OUT = 3.0 V 6000 Vdrop [V] IOUT [mA] 500400300200100 0.00 0.40 0.30 0.20 0.10 Tj = +150C Tj = +25C Tj = 40C −25 0 150 125100755025−40 0.00 0.30 Vdrop [V] 0.25 0.20 0.15 0.10 0.05 T j [C] IOUT = 30 mA IOUT = 300 mA
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series 5. Dropout voltage vs. Set output voltage (Ta = +25°C) 5.52.5 0.00 VOUT [V] Vdrop [V] 0.40 0.30 0.20 0.10 IOUT = 10 mA IOUT = 300 mA IOUT = 500 mA 6. Output voltage vs. Junction temperature 6. 1 V OUT = 1.0 V VIN = 2.5 V 6. 2 V OUT = 3.0 V VIN = 4.0 V −25 0 150 125100755025−40 0.90 1.10 Tj [C] VOUT [V] 1.05 1.00 0.95 −25 0 150 125100755025−40 2.70 3.30 Tj [C] VOUT [V]3.00 2.80 3.10 2.90 3.20 7. Current consumption during operation vs. Input voltage (When ON / OFF pin is ON, no load) 7. 1 V OUT = 1.0 V 7. 2 V OUT = 3.0 V 160 ISS1 [A] VIN [V] 120 654321 Tj = 150C Tj = 25C Tj = 40C 160 ISS1 [A] VIN [V] 120 654321 Tj = 150C Tj = 25C Tj = 40C 8. Current consumption during operation vs. Junction temperature 8. 1 V OUT = 1.0 V VIN = 2.5 V 8. 2 V OUT = 3.0 V VIN = 4.0 V −25 0 150 125100755025−40 Tj [C] 160 ISS1 [A] 120 −25 0 150 125100755025−40 Tj [C] 160 ISS1 [A] 120
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 9. Current consumption during operation vs. Output current (Ta = +25°C) 9. 1 V OUT = 1.0 V VIN = 2.5 V 9. 2 V OUT = 3.0 V VIN = 4.0 V 6000 ISS1 [A] IOUT [mA] 300 250 200 150 100 500400300200100 6000 ISS1 [A] IOUT [mA] 300 250 200 150 100 500400300200100 10. Ripple rejection (Ta = +25°C) 10. 1 V OUT = 1.0 V VIN = 3.0 V, CL = 2.2 μF 10. 2 V OUT = 3.0 V VIN = 4.0 V, CL = 2.2 μF Ripple Rejection [dB] Frequency [Hz] 100 1k 10k10 1M100k 100 IOUT = 1 mA IOUT = 30 mA IOUT = 100 mA Ripple Rejection [dB] Frequency [Hz] 100 1k 10k10 1M100k 100 IOUT = 1 mA IOUT = 30 mA IOUT = 100 mA
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series Reference Data 1. Characteristics of input transient response (Ta = +25°C) 1. 1 V OUT = 1.0 V IOUT = 100 mA, C L = 2.2 μF, VIN = 2.5 V ↔ 3.5 V, tr = tf = 5.0 μs 1. 2 V OUT = 3.0 V IOUT = 100 mA, C L = 2.2 μF, VIN = 4.0 V ↔ 5.0 V, tr = tf = 5.0 μs VOUT [V] t [s] VIN [V] 1.15 4.0 −4.0 1200−200 0 200 600400 800 1000 2.0 0.0 −2.0 1.10 1.05 1.00 0.95 VIN VOUT t [s] VIN [V] 6.0 −6.0 1200−200 0 200 600400 800 1000 2.90 4.0 2.0 0.0 −2.0 −4.0 3.05 3.00 2.95 3.10 3.15 3.20 VOUT [V] VIN VOUT 2. Characteristics of load transient response (Ta = +25°C) 2. 1 V OUT = 1.0 V VIN = 2.5 V, CL = 2.2 μF, IOUT = 50 mA ↔ 100 mA VIN = 2.5 V, CL = 2.2 μF, IOUT = 100 mA ↔ 500 mA t [s] IOUT [mA] 1.20 150 −150 1200−200 0 200 600400 800 1000 0.90 1.15 100 −50 −100 1.05 1.00 0.95 1.10 VOUT [V] IOUT VOUT t [s] IOUT [mA] 1.40 600 −600 1200−200 0 200 600400 800 1000 0.80 400 200 −200 −400 1.10 1.00 0.90 1.20 VOUT [V] 1.30 IOUT VOUT 2. 2 V OUT = 3.0 V VIN = 4.0 V, CL = 2.2 μF, IOUT = 50 mA ↔ 100 mA VIN = 4.0 V, CL = 2.2 μF, IOUT = 100 mA ↔ 500 mA t [s] IOUT [mA] 3.20 150 −150 1200−200 0 200 600400 800 1000 2.90 100 −50 −100 3.05 3.00 2.95 3.10 VOUT [V] 3.15 IOUT VOUT t [s] IOUT [mA] 3.40 600 −600 1200−200 0 200 600400 800 1000 2.80 400 200 −200 −400 3.10 3.00 2.90 3.20 VOUT [V] 3.30 IOUT VOUT
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION S-19253xxxH Series Rev.1.1_00 3. Transient response characteristics of ON / OFF pin (Ta = +25°C) 3. 1 VOUT = 1.0 V VIN = 2.5 V, CIN = CL = 2.2 μF, IOUT = 100 mA, VON / OFF = 0 V → 2.5 V 3. 2 VOUT = 3.0 V VIN = 4.0 V, CIN = CL = 2.2 μF, IOUT = 100 mA, VON / OFF = 0 V → 4.0 V VON / OFF [V] t [s] 2.00 0.00 3.00 1.00 4.00 5.00 1.00 1.0 0.0 1.0 2.0 2.0 3.0 3.0 400 2000160012008004000 VOUT [V] VOUT VON / OFF VON / OFF [V] t [s] 4.00 0.00 6.00 2.00 8.00 10.00 2.00 2.0 0.0 2.0 4.0 4.0 6.0 6.0 400 2000160012008004000 VOUT [V] VOUT VON / OFF 4. Soft-start time vs. Characteristics of operation ambient temperature VIN = 2.5 V, VON / OFF = 0 V → 2.5 V (VOUT(S) < 1.5 V), VIN = VOUT + 1.0 V, VON / OFF = 0 V → VOUT + 1.0 V (1.5 V ≤ VOUT(S)), CIN = CL = 2.2 μF, CSS = 10 nF 25 0 150 12510075502540 0.0 10.0 tSS [ms] Ta [C] 8.0 6.0 4.0 2.0 VOUT = 1.0 V VOUT = 3.0 V 5. Soft-start time vs. Characteristics of soft-start capacitance (Ta = +25°C) VIN = 2.5 V, VON / OFF = 0 V → 2.5 V (VOUT(S) < 1.5 V), VIN = VOUT + 1.0 V, VON / OFF = 0 V → VOUT + 1.0 V (1.5 V ≤ VOUT(S)), CIN = CL = 2.2 μF tSS [ms] CSS [nF] 0.1 1000.0 0.1 100.0 10.0 1.0 100.010.01.0 VOUT = 1.0 V VOUT = 3.0 V
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series 6. Inrush current characteristics (Ta = +25°C) 6. 1 V OUT = 1.0 V VIN = 2.5 V, IOUT = 100 mA, CL = 2.2 μF, CSS = 1 nF VIN = 2.5 V, IOUT = 100 mA, CL = 2.2 μF, CSS = 10 nF IIN [mA] t [s] 0.00 2.00 1.00 1.00 2.00 3.00 3.00 800 600 400 200 1000 1200 0 400400 1200800 1600 2000 2400 VOUT, VON / OFF [V] VOUT IIN VON / OFF IIN [mA] t [s] 0.00 2.00 1.00 1.00 2.00 3.00 3.00 800 600 400 200 1000 1200 0 40004000 120008000 16000 20000 24000 VOUT, VON / OFF [V] VOUT IIN VON / OFF 6. 2 V OUT = 3.0 V VIN = 4.0 V, IOUT = 100 mA, CL = 2.2 μF, CSS = 1 nF VIN = 4.0 V, IOUT = 100 mA, CL = 2.2 μF, CSS = 10 nF IIN [mA] t [s] 0.00 4.00 2.00 2.00 4.00 6.00 6.00 800 600 400 200 1000 1200 0 400400 1200800 1600 2000 2400 VOUT, VON / OFF [V] VOUT IIN VON / OFF IIN [mA] t [s] 0.00 4.00 2.00 2.00 4.00 6.00 6.00 800 600 400 200 1000 1200 VOUT, VON / OFF [V] 0 40004000 120008000 16000 20000 24000 VOUT IIN VON / OFF
FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION Rev.1.1_00 S-19253xxxH Series Power Dissipation 0 25 50 75 100 125 150 1750 Ambient temperature (Ta) [C] Power dissipation (PD) [W] Tj = 150C max. SOT-89-5 E D B A Board Power Dissipation (P D) A 1.05 W B 1.49 W C − D 2.72 W E 3.57 W
(1) Item Specification Size [mm] 114.3 x 76.2 x t1.6 Material FR-4 Number of copper foil layer 2 Copper foil layer [mm] 1 Land pattern and wiring for testing: t0.070 4 74.2 x 74.2 x t0.070 (2) Item Specification Size [mm] 114.3 x 76.2 x t1.6 Material FR-4 Number of copper foil layer 4 Copper foil layer [mm] 1 Land pattern and wiring for testing: t0.070 2 74.2 x 74.2 x t0.035 3 74.2 x 74.2 x t0.035 4 74.2 x 74.2 x t0.070 (3) Item Specification Size [mm] 114.3 x 76.2 x t1.6 Material FR-4 Number of copper foil layer 4 Copper foil layer [mm] 1 Pattern for heat radiation: 2000mm 2 t0.070 2 74.2 x 74.2 x t0.035 3 74.2 x 74.2 x t0.035 4 74.2 x 74.2 x t0.070 (4) Item Specification Size [mm] 114.3 x 76.2 x t1.6 Material FR-4 Number of copper foil layer 4 Copper foil layer [mm] 1 Pattern for heat radiation: 2000mm 2 t0.070 2 74.2 x 74.2 x t0.035 3 74.2 x 74.2 x t0.035 4 74.2 x 74.2 x t0.070 Board B Thermal via - Thermal via - Board A Board E Thermal via Number: 4 Diameter: 0.3 mm Board D Thermal via - IC Mount Area enlarged view SOT-89-5 Test Board No. SOT895-A-Board-SD-1.0 SII Semiconductor Corporation
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