R1155N030B-TR-FE

R1155x Series 150 mA 24 V Input High Voltage Regulator NO.EA-270-200219 OUTLINE The R1155x is a CMOS-based 24 V input voltage regulator featuring 150 mA output that provides high output voltage accuracy and low supply current. Internally, the R1155x consists of a voltage reference unit, an error amplifier, and a resistor net for setting output voltage. As protection circuits, the R1155x contains a current limit circuit, a fold-back protection circuit, a thermal shutdown circuit and a reverse current protection circuit. The R1155x is available in the fixed output voltage type (R1155xxxxB), and the adjustable output voltage type (R1155x001C). The output voltage accuracy for the fixed output voltage type is as high as ±2.0%. The R1155x is offered in a 5-pin SOT-89-5 package and a 5-pin SOT-23-5 package. FEATURES • • • • • • • Supply Current ········································· Typ. 7.5 µA (V IN = 6.0 V or 3.0 V) Standby Current ········································ Typ. 0.1 µA Output Current ·········································· Min. 150 mA (V IN = 6.0 V or 3.0 V) Output Voltage Accuracy ····························· ±2.0% Package ·················································· SOT-23-5, SOT-89-5 Input Voltage Range ·································· Max. 24.0 V Output Voltage Range ································ Fixed Output Voltage Type: 2.5 V to 12.0 V Adjustable Output Voltage Type: 2.5 V, 2.5 V to 23.0 V using external resistor • • • • Fold-back Protection Circuit ························· Typ. 30 mA Thermal Shutdown Circuit Reverse Current Protection Circuit Ceramic Capacitor Capable ························· C OUT = 4.7 µF or more APPLICATIONS • • • Power source for home appliances (refrigerators, rice cookers, electric water warmers, etc.) Power source for in-car audio systems, in-car navigation systems, ETC systems, and reset circuits Power source for laptop personal computers, digital TVs, cordless phones, and private LAN systems for home, and reset circuits • Power source for copiers, printers, facsimiles, scanners, and reset circuits 1 R1155x NO.EA-270-200219 SELECTION GUIDE The output voltage, the output voltage type, and the package type for the ICs are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free R1155Nxxx∗-TR-FE SOT-23-5 3,000 pcs Yes Yes R1155Hxxx∗-T1-FE SOT-89-5 1,000 pcs Yes Yes xxx: Designation of the output voltage (V SET ) For Fixed Output Voltage Type: 2.5 V (025) to 12 V (120) in 0.1 V steps For Adjustable Output Voltage Type: 2.5 V (001) only ∗: Designation of the output voltage type (B) Fixed Output Voltage Type (C) Adjustable Output Voltage Type BLOCK DIAGRAMS Reverse Current Protection VDD Reverse Current Protection VOUT VDD VOUT Voltage Reference Voltage Reference VFB On/Off Control On/Off Control Thermal Shutdown Current Limit VCE 2 GND VCE Thermal Shutdown Current Limit R1155xxxxB Block Diagram R1155x001C Block Diagram (Fixed Output Voltage Type) (Adjustable Output Voltage Type) GND R1155x NO.EA-270-200219 PIN DESCRIPTION 5 4 5 4 (mark side) 1 2 3 1 SOT-23-5 Pin Configuration 2 3 SOT-89-5 Pin Configuration SOT-23-5 Pin Description Pin No Symbol Description 1 VOUT VR Output Pin 2 GND Ground Pin 3 VDD Input Pin TP 1 R1155NxxxB Test Pin R1155N001C 3 VR Adjustment Pin 4 VFB 2 5 CE Chip Enable Pin, Active-high SOT-89-5 Pin Description Pin No Symbol 1 VOUT VR Output Pin 2 GND Ground Pin 3 CE Chip Enable Pin, Active-high TP1 R1155HxxxB Test Pin VFB2 R1155H001C3 VR Adjustment Pin VDD Input Pin 4 5 Description 1 The TP pin must be connected to GND. A 24 KΩ or less voltage setting resistor must be connected to the VFB pin. 3 As for the adjustable output voltage type (R1155N001C), please refer to ADJUSTABLE OUTPUT VOLTAGE TYPE SETTING. 2 3 R1155x NO.EA-270-200219 PIN EQIVALENT CIRCUIT DIAGRAMS Driver CE VOUT VOUT Pin Equivalent Circuit Diagram VFB Pin Equivalent Circuit Diagram VOUT TP TP Pin Equivalent Circuit Diagram (R1155xxxxB) 4 VOUT VFB VFB Pin Equivalent Circuit Diagram (R1155x001C) R1155x NO.EA-270-200219 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings Symbol Item Rating Unit −0.3 to 26 V −0.3 to V IN +0.3 V V IN Input Voltage V CE Input Voltage (CE Pin) V OUT Output Voltage −0.3 to 26 V V VFB Output Voltage (VFB Pin) −0.3 to 26 V I OUT Output Current 350 mA PD Power Dissipation Tj Junction Temperature −40 to 125 °C Storage Temperature Range −55 to 125 °C Tstg Refer to Appendix ‘’Power Dissipation’’ ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause permanent damage and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS Recommended Operating Ratings Symbol Item Ta Operating Temperature Range V IN Input Voltage Ratings Unit −40 to 105 °C 3.5 to 24 V RECOMMENDED OPERATING RATINGS All of electronic equipment should be designed that the mounted semiconductor devices recommended operating ratings. The semiconductor devices cannot operate normally over operating ratings, even if they are used over such ratings by momentary electronic noise semiconductor devices may receive serious damage when they continue to operate over operating ratings. operate within the the recommended or surge. And the the recommended 5 R1155x NO.EA-270-200219 ELECTRICAL CHARACTERISTICS V IN = V CE = V SET + 3.0 V, C OUT = 4.7 μF, I OUT = 1 mA, unless otherwise noted. The specifications surrounded by are guaranteed by Design Engineering at −40°C ≤ Ta ≤ 105°C. R1155xxxxB, R1155x001C Electrical Characteristics Symbol I LIM V OUT I SS1 I SS2 (Ta = 25°C) Item Conditions Output Current V IN = V SET + 4 V Output Voltage (Low Power Mode) I OUT = 1 mA Supply Current (Low Power Mode) Supply Current (Fast Mode) Istandby Standby Current mA x0.98 x1.02 V −40°C ≤ Ta ≤ 105°C x0.955 x1.03 V 22 µA 4.2 < V SET ≤ 8.4 V 8.6 22 µA 8.4 < V SET ≤ 12 V 9.5 22 µA I OUT = 10 mA 65 125 µA V IN = 24 V, V CE = 0 V 0.1 1.0 µA 0 1.5 % 2.5 ≤ V SET ≤ 5 V 30 90 mV 5 < V SET ≤ 12 V 30 100 mV I OUT = 0 mA ∆V OUT /∆I OUT Load Regulation (Fast Mode) 6 mA ≤ I OUT ≤ 150 mA -1.5 Line Regulation (Low Power Mode) V SET + 0.2 V ≤ V IN ≤ 24 V I OUT = 1 mA 0.3 1.3 % Line Regulation (Fast Mode) V SET + 0.2 V ≤ V IN ≤ 24 V I OUT = 10 mA 1.2 2.4 % 2.5V ≤ V SET < 3.3 V 1.6 2.6 V 3.3 V ≤ V SET < 5 V 0.96 2.1 V 5 ≤ V SET ≤ 12 V 0.55 1.7 V 2.5 ≤ V SET < 5 V 60 dB 5 ≤ V SET ≤ 12 V 50 dB ±100 ppm /°C Dropout Voltage Ripple Rejection (Fast Mode) I OUT = 150 mA f = 1 kHz, 0.5 Vp-p, I OUT = 10 mA ∆V OUT /∆Ta Output Voltage Temperature Coefficient I OUT = 1 mA, −40°C ≤ Ta ≤ 105°C I OUTH Fast Mode Switching Current I OUT = Light Load → Heavy Load I OUTL Low Power Mode Switching Current I OUT = Short Current Limit V OUT = 0 V I SC Unit 7.5 1 mA ≤ I OUT ≤ 6 mA RR Max. 2.5 ≤ V SET ≤ 4.2 V Output Voltage Deviation When Switching Mode V DIF Typ. 150 Ta = 25ºC ∆V OUT ∆V OUT /∆V IN Min. Heavy Load → Light Load 2.4 4.5 6.5 mA 0.6 1.5 2.4 mA 30 mA V CEH CE Input Voltage “H” 1.35 V IN V V CEL CE Input Voltage “L” 0 0.5 V T TSD Thermal Shutdown Temperature Junction Temperature 145 °C T TSR Thermal Shutdown Released Temperature Junction Temperature 120 °C All test items listed under ELECTRICAL CHARACTERISTICS are done under the pulse load condition (Tj ≈Ta = 25°C) except for Ripple Rejection and Output Voltage Temperature Coefficient. 6 R1155x NO.EA-270-200219 ELECTRICAL CHARACTERISTICS (continued) V IN = V CE = V SET + 3.0 V, C OUT = 4.7 μF, I OUT = 1 mA, unless otherwise noted. The specifications surrounded by are guaranteed by Design Engineering at −40°C ≤ Ta ≤ 105°C. R1155xxxxB, R1155x001C Electrical Characteristics Symbol I REV Item Reverse Current Limit (Ta = 25°C) Conditions CE = GND, V IN = V SET + 0.02 V Typ. Max. Unit 2.5 ≤ V SET < 5 V 1.0 3.5 µA 5 ≤ V SET ≤ 12 V 2.0 6.0 µA Reverse Current Protection V REV _ DET Mode Detection Offset 1 V REV = V DD - V OUT 0 ≤ V IN ≤ 24.0 V, V OUT ≥ 2.0 V Reverse Current Protection Mode Release Offset1 0 ≤ V IN ≤ 24.0 V, V OUT ≥ 2.0 V V REV _ REL Min. 20 mV 220 mV All test items listed under ELECTRICAL CHARACTERISTICS are done under the pulse load condition (Tj ≈Ta = 25°C) except for Ripple Rejection and Output Voltage Temperature Coefficient. 1 The operation of reverse current protection circuit is guaranteed when V OUT ≥ 2.0 V. The reverse current protection mode is always turned on when VIN = 0 V. 7 R1155x NO.EA-270-200219 THEORY OF OPERATION Power Activation When starting up the IC using the input voltages of the VDD and CE pins simultaneously with no load, the both pin voltages have to be 0.06 V/ ms or faster. When starting up the IC using the both pin voltages at 0.06 V/ ms or slower with no load, the VDD pin has to be started up before the CE pin. Thermal Shutdown Circuit The R1155x contains a thermal shutdown circuit, which stops regulator operation if the junction temperature of the R1155x becomes higher than 145°C (Typ.). Additionally, if the junction temperature after the regulator being stopped decreases to a level below 120°C (Typ.), it restarts regulator operation. As a result the operation of the thermal shutdown circuit causes the regulator repeatedly to turn off and on until the causes of overheating are removed. As a consequence a pulse shaped output voltage occurs. Reverse Current Protection Circuit The R1155x includes a reverse current protection circuit, which stops the reverse current flowing from the VOUT to VDD pins or to GND pin when V OUT becomes more than V IN . Usually, the LDO using Pch output transistor contains a parasitic diode between VDD pin and VOUT pin. Therefore, if V OUT is more than V IN , the parasitic diode becomes forward direction. As a result, the current flows from VOUT pin to VDD pin. The R1155x switches the mode to the reverse current protection mode before V IN becomes smaller than V OUT by connecting the parasitic diode of Pch output transistor to the backward direction, and connecting the gate to VOUT pin. As a result, the Pch output transistor is turned off and the all the current pathways from VOUT pin to GND pin are shut down to maintain the reverse current lower than [I REV ] of the Electrical Characteristics. Switching to either the normal mode or to the reverse current protection mode is determined by the magnitude of V IN voltage and V OUT voltage. For the stable operation, offset and hysteresis are set as the threshold. The detection/ release thresholds of both normal and reverse current protection modes are specified by [V REV_DET ] and [V REV_REL ] of the Electrical Characteristics. Therefore, the minimum dropout voltage under the small load current condition is restricted by the value of [V REV_REL ]. Figure 7 and Figure 8 show the normal operation mode and reverse current protection mode, respectively. Figure 9 shows the detection/ release timing of reverse current protection function. When giving the VOUT pin a constant-voltage and decreasing the V IN voltage, the dropout voltage will become lower than the [V REV_DET ]. As a result, the reverse current protection starts to function to stop the load current. By increasing the dropout voltage more than the [V REV_REL ], the protection mode will be released to let the load current to flow. If the dropout voltage to be used is smaller than [V REV_REL ], the detection and the release may be repeated. The operation coverage of the reverse current protection circuit is V OUT ≥ 1.5 V. However, under the condition of V IN = 0 V, always the reverse current protection mode is operating. 8 R1155x NO.EA-270-200219 Reverse Detector VIN Reverse Detector VIN IOUT IREV - - + + VOUT Vref Vref GND GND Output/ Reverse Current IOUT/ IREV Input/ Output Voltage VIN/ VOUT [V] Normal Operation Mode VOUT Reverse Current Protection Mode VIN VREV_REL VREV_DET VOUT IOUT Normal Mode Reverse Current Protection Mode Normal Mode 0 IREV Detection/ Release Timing of Reverse Current Protection Function 9 R1155x NO.EA-270-200219 APPLICATION INFORMATION V IN V IN V DD R1155xxxxB CIN V OUT V OUT CE GND CIN COUT V DD R1155x001C V OUT CE GND V OUT R1 V FB COUT R2 R1155xxxxB Typical Application R1155x001C Typical Application (Fixed Output Voltage Type) (Adjustable Output Voltage Type) Technical Notes on the Components Selection • In the R1155x, phase compensation is provided to secure stable operation even when the load current is varied. For this purpose, use a 4.7 μF or more output capacitor (C OUT ) with good frequency characteristics and proper ESR (Equivalent Series Resistance). In case of using a tantalum type capacitor and the ESR value of the capacitor is large, the output might be unstable. Evaluate the circuit including consideration of frequency characteristics. • Ensure the VDD and GND lines are sufficiently robust. If their impedance is too high, noise pickup or unstable operation may result. Connect C OUT with suitable values between the VOUT and GND pins, and as close as possible to the pins. Please refer to Figure 5 and Figure 6 below. 10 R1155x NO.EA-270-200219 Adjustable Output Voltage Type Setting (R1155x001C) The output voltage of the R1155x001C can be adjusted up to 23 V by using the external divider resistors (R1, R2). The resistance value for R2 should be set to 24 KΩ or less. By using the following equations, the output voltage can be determined. V FB voltage which is fixed inside the IC is described as setV FB . setV FB is 2.5 V. When using the R1155x001C with 2.5 V, please connect the VOUT pin to the VFB pin. VOUT R1 I1 VFB RIC R2 GND VOUT IIC I2 setVFB Output Voltage Adjustment Using External Divider Resistors I1 = I IC + I2.......................................................................................................................................(1) I2 = setV FB / R2................................................................................................................................(2) Thus, I1 = I IC + setV FB / R2 ........................................................................................................................ (3) Therefore, V OUT = setV FB + R1 x I1 ................................................................................................................... (4) Insert Equation (3) into Equation (4), so V OUT = setV FB + R1 x (I IC + setV FB / R2) = setV FB x (1+ R1 / R2) + R1 x I IC ........................................................................................... (5) In Equation (5), R1xI IC is the error-causing factor in V OUT . As for I IC , I IC = setV FB / R IC………………………………………………………………………………………………………………………………………………… (6) Therefore, the error-causing factor R1x I IC can be described as follows. R1 x I IC = R1 x setV FB / R IC = setV FB × R1 / R IC ............................................................................................................. (7) For better accuracy, choosing R1 (