Rev.3.0_01 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1131 Series The S-1131 Series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and low current consumption developed based on CMOS technology. A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor. An ON/OFF circuit ensures a long battery life, and small SOT-89-3, SOT-89-5 and 6-Pin HSON(A) packages realize high-density mounting. Features • Output voltage: • High-accuracy output voltage: • Low dropout voltage: • Low current consumption: • High peak current capability: • Built-in ON/OFF circuit: • High ripple rejection: • Built-in overcurrent protector: • Small package: • Lead-free products 1.5 V to 5.5 V, selectable in 0.1 V steps. ±1.0% 250 mV typ. (3.0 V output product, IOUT = 100 mA) During operation: 35 µA typ., 65 µA max. During shutdown: 0.1 µA typ., 1.0 µA max. 300 mA output is possible (at VIN ≥ VOUT(S) + 1.0 V)*1 Ensures long battery life. 70 dB typ. (at 1.0 kHz) Overcurrent of output transistor can be restricted. SOT-89-3, SOT-89-5, 6-Pin HSON(A) *1. Attention should be paid to the power dissipation of the package when the output current is large. Applications • Power supply for DVD and CD-ROM drives • Power supply for battery-powered devices • Power supply for personal communication devices • Power supply for note PCs Packages Package Name SOT-89-3 SOT-89-5 6-Pin HSON(A) Package UP003-A UP005-A PD006-A Drawing Code Tape UP003-A UP005-A PD006-A Seiko Instruments Inc. Reel UP003-A UP005-A PD006-A 1 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Block Diagrams (1) Without shutdown function (Package : SOT-89-3) *1 VOUT VIN Overcurrent protector + − Reference voltage circuit VSS *1. Parasitic diode Figure 1 (2) With shutdown function (Package : SOT-89-5, 6-Pin HSON(A)) *1 VOUT VIN Overcurrent protector ON/OFF circuit ON/OFF + − Reference voltage circuit VSS *1. Parasitic diode Figure 2 2 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Product Name Structure • The product types, output voltage and packages for the S-1131 Series can be selected at the user’s request. Refer to the “Product name” for the meanings of the characters in the product name and “Product name list” for the full product names. 1. Product name S-1131 x xx xx – xxx TF G IC direction in tape specifications*1 Product name (abbreviation)*2 Package name (abbreviation) UA: SOT-89-3 UC: SOT-89-5 PD: 6-Pin HSON(A) Output voltage 15 to 55 (e.g., when the output voltage is 1.5 V, it is expressed as 15.) Product type*3 A: ON/OFF pin negative logic B: ON/OFF pin positive logic *1. Refer to the taping specifications at the end of this book. *2. Refer to the “Product name list”. *3. Refer to 3. Shutdown pin (ON/OFF pin) in the “Operation” (Expect SOT-89-3). Seiko Instruments Inc. 3 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series 2. Product name list Table 1 Output voltage 1.5V±1.0% 1.6V±1.0% 1.7V±1.0% 1.8V±1.0% 1.9V±1.0% 2.0V±1.0% 2.1V±1.0% 2.2V±1.0% 2.3V±1.0% 2.4V±1.0% 2.5V±1.0% 2.6V±1.0% 2.7V±1.0% 2.8V±1.0% 2.9V±1.0% 3.0V±1.0% 3.1V±1.0% 3.2V±1.0% 3.3V±1.0% 3.4V±1.0% 3.5V±1.0% 3.6V±1.0% 3.7V±1.0% 3.8V±1.0% 3.9V±1.0% 4.0V±1.0% 4.1V±1.0% 4.2V±1.0% 4.3V±1.0% 4.4V±1.0% 4.5V±1.0% 4.6V±1.0% 4.7V±1.0% 4.8V±1.0% 4.9V±1.0% 5.0V±1.0% 5.1V±1.0% 5.2V±1.0% 5.3V±1.0% 5.4V±1.0% 5.5V±1.0% SOT-89-3 S-1131B15UA-N4ATFG S-1131B16UA-N4BTFG S-1131B17UA-N4CTFG S-1131B18UA-N4DTFG S-1131B19UA-N4ETFG S-1131B20UA-N4FTFG S-1131B21UA-N4GTFG S-1131B22UA-N4HTFG S-1131B23UA-N4ITFG S-1131B24UA-N4JTFG S-1131B25UA-N4KTFG S-1131B26UA-N4LTFG S-1131B27UA-N4MTFG S-1131B28UA-N4NTFG S-1131B29UA-N4OTFG S-1131B30UA-N4PTFG S-1131B31UA-N4QTFG S-1131B32UA-N4RTFG S-1131B33UA-N4STFG S-1131B34UA-N4TTFG S-1131B35UA-N4UTFG S-1131B36UA-N4VTFG S-1131B37UA-N4WTFG S-1131B38UA-N4XTFG S-1131B39UA-N4YTFG S-1131B40UA-N4ZTFG S-1131B41UA-N5ATFG S-1131B42UA-N5BTFG S-1131B43UA-N5CTFG S-1131B44UA-N5DTFG S-1131B45UA-N5ETFG S-1131B46UA-N5FTFG S-1131B47UA-N5GTFG S-1131B48UA-N5HTFG S-1131B49UA-N5ITFG S-1131B50UA-N5JTFG S-1131B51UA-N5KTFG S-1131B52UA-N5LTFG S-1131B53UA-N5MTFG S-1131B54UA-N5NTFG S-1131B55UA-N5OTFG SOT-89-5 S-1131B15UC-N4ATFG S-1131B16UC-N4BTFG S-1131B17UC-N4CTFG S-1131B18UC-N4DTFG S-1131B19UC-N4ETFG S-1131B20UC-N4FTFG S-1131B21UC-N4GTFG S-1131B22UC-N4HTFG S-1131B23UC-N4ITFG S-1131B24UC-N4JTFG S-1131B25UC-N4KTFG S-1131B26UC-N4LTFG S-1131B27UC-N4MTFG S-1131B28UC-N4NTFG S-1131B29UC-N4OTFG S-1131B30UC-N4PTFG S-1131B31UC-N4QTFG S-1131B32UC-N4RTFG S-1131B33UC-N4STFG S-1131B34UC-N4TTFG S-1131B35UC-N4UTFG S-1131B36UC-N4VTFG S-1131B37UC-N4WTFG S-1131B38UC-N4XTFG S-1131B39UC-N4YTFG S-1131B40UC-N4ZTFG S-1131B41UC-N5ATFG S-1131B42UC-N5BTFG S-1131B43UC-N5CTFG S-1131B44UC-N5DTFG S-1131B45UC-N5ETFG S-1131B46UC-N5FTFG S-1131B47UC-N5GTFG S-1131B48UC-N5HTFG S-1131B49UC-N5ITFG S-1131B50UC-N5JTFG S-1131B51UC-N5KTFG S-1131B52UC-N5LTFG S-1131B53UC-N5MTFG S-1131B54UC-N5NTFG S-1131B55UC-N5OTFG Remark Please contact the SII marketing department for type A products. 4 Seiko Instruments Inc. 6-Pin HSON(A) S-1131B15PD-N4ATFG S-1131B16PD-N4BTFG S-1131B17PD-N4CTFG S-1131B18PD-N4DTFG S-1131B19PD-N4ETFG S-1131B20PD-N4FTFG S-1131B21PD-N4GTFG S-1131B22PD-N4HTFG S-1131B23PD-N4ITFG S-1131B24PD-N4JTFG S-1131B25PD-N4KTFG S-1131B26PD-N4LTFG S-1131B27PD-N4MTFG S-1131B28PD-N4NTFG S-1131B29PD-N4OTFG S-1131B30PD-N4PTFG S-1131B31PD-N4QTFG S-1131B32PD-N4RTFG S-1131B33PD-N4STFG S-1131B34PD-N4TTFG S-1131B35PD-N4UTFG S-1131B36PD-N4VTFG S-1131B37PD-N4WTFG S-1131B38PD-N4XTFG S-1131B39PD-N4YTFG S-1131B40PD-N4ZTFG S-1131B41PD-N5ATFG S-1131B42PD-N5BTFG S-1131B43PD-N5CTFG S-1131B44PD-N5DTFG S-1131B45PD-N5ETFG S-1131B46PD-N5FTFG S-1131B47PD-N5GTFG S-1131B48PD-N5HTFG S-1131B49PD-N5ITFG S-1131B50PD-N5JTFG S-1131B51PD-N5KTFG S-1131B52PD-N5LTFG S-1131B53PD-N5MTFG S-1131B54PD-N5NTFG S-1131B55PD-N5OTFG HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Pin Configuration Table 2 SOT-89-3 Top view 1 2 Pin No. 1 2 3 Symbol VOUT VSS VIN Description Output voltage pin GND pin Input voltage pin 3 Figure 3 Table 3 SOT-89-5 Top view 5 4 Pin No. 1 2 3 4 5 Symbol VOUT VSS NC*1 ON/OFF VIN Description Output voltage pin GND pin No connection Shutdown pin Input voltage pin *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. 1 2 3 Figure 4 Seiko Instruments Inc. 5 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Table 4 6-Pin HSON(A) Top view 6 5 4 1 2 Pin No. 1 2 3 4 5 6 3 Bottom view 1 2 3 Symbol VOUT VSS NC*1 NC*1 ON/OFF VIN Description Output voltage pin GND pin No connection No connection Shutdown pin Input voltage pin *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. *1 *2 6 *1. 5 4 Connect the exposed thermal die pad at shadowed area to the board, and set electric potential open or VSS. However, do not use it as the function of electrode. *2. Be careful of the contact with other wires because the pinch lead has the same electric potential as VSS. Figure 5 Absolute Maximum Ratings Table 5 Item Input voltage Output voltage SOT-89-3 SOT-89-5 6-Pin HSON(A) Operating ambient temperature Storage temperature Power dissipation Symbol VIN VON/OFF VOUT PD Topr Tstg (Ta = 25°C unless otherwise specified) Absolute Maximum Rating Unit V VSS − 0.3 to VSS + 7 V VSS − 0.3 to VIN + 0.3 V VSS − 0.3 to VIN + 0.3 500 mW 500 mW 500 mW −40 to +85 °C −40 to +125 °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. 6 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Electrical Characteristics Table 6 (Ta = 25°C unless otherwise specified) Item Output voltage*1 *2 Output current Dropout voltage*3 Symbol VOUT(E)1 VIN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(E)2 VIN = VOUT(S) + 1.0 V, IOUT = 80 mA IOUT Vdrop Line regulation ∆VOUT1 ∆VIN • VOUT Load regulation ∆VOUT2 Output voltage temperature coefficient*4 Current consumption during operation Input voltage ∆VOUT ∆Ta • VOUT ISS1 VIN Ripple rejection RR Short-circuit current Ishort Current consumption during shutdown Shutdown pin input voltage “H” Shutdown pin input voltage “L” Shutdown pin input current “H” Shutdown pin input current “L” Conditions ISS2 VIN ≥ VOUT(S) + 1.0 V VOUT(S) = 1.5 V IOUT = 100 mA VOUT(S) = 1.6 V VOUT(S) = 1.7 V VOUT(S) = 1.8 V VOUT(S) = 1.9 V VOUT(S) = 2.0 V VOUT(S) = 2.1 V 2.2 V ≤ VOUT(S) ≤ 2.5 V 2.6 V ≤ VOUT(S) ≤ 3.3 V 3.4 V ≤ VOUT(S) ≤ 5.5 V VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V, IOUT = 80 mA VIN = VOUT(S) + 1.0 V, 1.0 mA ≤ IOUT ≤ 80 mA VIN = VOUT(S) + 1.0 V, IOUT = 10 mA, −40°C ≤ Ta ≤ 85°C VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON, no load VIN = VOUT(S) + 1.0 V, f = 1.0 kHz, ∆Vrip = 0.5 Vrms, IOUT = 80 mA VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON, VOUT = 0 V VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF, no load Min. VOUT(S) × 0.99 VOUT(S) × 0.98 300*5 Typ. Max. Unit Test Circuit V 1 V 1 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.25 0.20 VOUT(S) × 1.01 VOUT(S) × 1.02 1.05 0.95 0.85 0.75 0.65 0.60 0.55 0.49 0.34 0.28 mA V V V V V V V V V V 3 1 1 1 1 1 1 1 1 1 1 0.05 0.2 %/V 1 20 40 mV 1 ±100 ppm / °C 1 35 65 µA 2 2.0 6.5 V 70 dB 5 450 mA 3 0.1 1.0 µA 2 VOUT(S) VOUT(S) VSH VIN = VOUT(S) + 1.0 V, RL = 1.0 kΩ 1.5 V 4 VSL VIN = VOUT(S) + 1.0 V, RL = 1.0 kΩ 0.3 V 4 ISH VIN = 6.5 V, VON/OFF = 6.5 V −0.1 0.1 µA 4 ISL VIN = 6.5 V, VON/OFF = 0 V −0.1 0.1 µA 4 *1. VOUT(S): Specified output voltage VOUT(E)1: Actual output voltage at the fixed load The output voltage when fixing IOUT(= 30 mA) and inputting VOUT(S) + 1.0 V VOUT(E)2: Actual output voltage at the fixed load The output voltage when fixing IOUT(= 80 mA) and inputting VOUT(S) + 1.0 V *2. The output current at which the output voltage becomes 95% of VOUT(E)1 after gradually increasing the output current. *3. Vdrop = VIN1 − (VOUT3 × 0.98) VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 100 mA. VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltage. *4. The change in temperature [mV/°C] is calculated using the following equation. ∆VOUT [mV/ °C]*1 = VOUT(S)[V ]*2 × ∆VOUT [ppm/ °C]*3 ÷ 1000 ∆Ta ∆Ta • VOUT *1. The change in temperature of the output voltage *2. Specified output voltage *3. Output voltage temperature coefficient *5. The output current can be at least this value. Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the power dissipation of the package when the output current is large. This specification is guaranteed by design. Seiko Instruments Inc. 7 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Test Circuits 1. VIN + VOUT ON/OFF *1 V VSS A + Set to power on Figure 6 2. A VOUT VIN ON/OFF*1 VSS Set to VIN or GND Figure 7 + 3. VIN VOUT ON/OFF A *1 V VSS + Set to power on Figure 8 4. VIN A + VOUT ON/OFF*1 + VSS V RL Figure 9 5. VIN VOUT + ON/OFF*1 VSS V RL Set to power on Figure 10 *1. In case of product with shutdown function. 8 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Standard Circuit Output Input VIN CIN*1 VOUT ON/OFF*2 VSS Single GND CL*3 GND *1. CIN is a capacitor for stabilizing the input. *2. In case of product with shutdown function. *3. A tantalum capacitor (2.2 µF or more) can be used. Figure 11 Caution The above connection diagram and constant will not guarantee successful operation. Perform thorough evaluation using the actual application to set the constant. Application Conditions Input capacitor (CIN): Output capacitor (CL): 1.0 µF or more 2.2 µF or more (tantalum capacitor) Caution A general series regulator may oscillate, depending on the external components selected. Check that no oscillation occurs with the application using the above capacitor. Seiko Instruments Inc. 9 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Explanation of Terms 1. Low dropout voltage regulator The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in low on-resistance transistor. 2. Output voltage (VOUT) The accuracy of the output voltage is ensured at ±1.0% under the specified conditions of fixed input voltage*1, fixed output current, and fixed temperature. *1. Differs depending the product. Caution If the above conditions change, the output voltage value may vary and exceed the accuracy range of the output voltage. Please see the electrical characteristics and attached characteristics data for details. ∆VOUT1 ∆V IN • VOUT 3. Line regulation Indicates the dependency of the output voltage on the input voltage. That is, the value shows how much the output voltage changes due to a change in the input voltage with the output current remaining unchanged. 4. Load regulation (∆VOUT2) Indicates the dependency of the output voltage on the output current. That is, the value shows how much the output voltage changes due to a change in the output current with the input voltage remaining unchanged. 5. Dropout voltage (Vdrop) Indicates the difference between the input voltage VIN1, which is the input voltage (VIN) at the point where the output voltage has fallen to 98% of the output voltage value VOUT3 after VIN was gradually decreased from VIN = VOUT(S) + 1.0 V, and the output voltage at that point (VOUT3 × 0.98). Vdrop = VIN1 − (VOUT3 × 0.98) 10 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series ∆VOUT 6. Temperatur e coefficient of output voltage ∆Ta • VOUT The shadowed area in Figure 12 is the range where VOUT varies in the operating temperature range when the temperature coefficient of the output voltage is ±100 ppm/°C. Ex. S-1131B28 Typ. VOUT [V] +0.28 mV / °C *1 VOUT(E)1 −0.28 mV / °C −40 *1. 25 85 Ta [°C] VOUT(E)1 is the value of the output voltage measured at 25°C. Figure 12 A change in the temperature of the output voltage [mV/°C] is calculated using the following equation. ∆VOUT [mV/°C]*1 = VOUT(S)[V ]*2 × ∆VOUT [ppm/°C]*3 ÷ 1000 ∆Ta ∆Ta • VOUT *1. Change in temperature of output voltage *2. Specified output voltage *3. Output voltage temperature coefficient Seiko Instruments Inc. 11 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Operation 1. Basic operation Figure 13 shows the block diagram of the S-1131 Series. The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistancedivided by feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary to ensure a certain output voltage free of any fluctuations of input voltage and temperature. VIN *1 Current supply Error amplifier VOUT − Vref Rf + Vfb Reference voltage circuit Rs VSS *1. Parasitic diode Figure 13 2. Output transistor The S-1131 Series uses a low on-resistance P-channel MOS FET as the output transistor. Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due to inverse current flowing from VOUT pin through a parasitic diode to VIN pin. 12 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series 3. Shutdown pin (ON/OFF pin) The products with shutdown function performs starting and a stop the regulator. When the ON/OFF pin is set to the shutdown level, the operation of all internal circuits stops, and the builtin P-channel MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially reduce the current consumption. The VOUT pin becomes the Vss level due to the internally divided resistance of several hundreds kΩ between the VOUT pin and VSS pin. The structure of the ON/OFF pin is as shown in Figure 14. Since the ON/OFF pin is neither pulled down nor pulled up internally, do not use it in the floating state. In addition, note that the current consumption increases if a voltage of 0.3 V to VIN – 0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not used, connect it to the VSS pin if the logic type is “A” and to the VIN pin if it is “B”. Table 7 Logic Type ON/OFF Pin Internal Circuits VOUT Pin Voltage Current Consumption A “L”: Power on Operating Set value ISS1 A “H”: Power off Stopped VSS level ISS2 B “L”: Power off Stopped VSS level ISS2 B “H”: Power on Operating Set value ISS1 VIN ON/OFF VSS Figure 14 Selection of Output Capacitor (CL) The S-1131 Series performs phase compensation using the internal phase compensator in the IC and the ESR (Equivalent Series Resistance) of the output capacitor to enable stable operation independent of changes in the output load. Therefore, always place a capacitor (CL) of 2.2 µF or more between VOUT and VSS pins. For stable operation of the S-1131 Series, it is essential to employ a capacitor whose ESR is within an optimum range. Using a capacitor whose ESR is outside the optimum range (approximately 0.5 to 5 Ω), whether larger or smaller, may cause an unstable output, resulting in oscillation. For this reason, a tantalum electrolytic capacitor is recommended. When a ceramic capacitor or an OS capacitor with a low ESR is used, it is necessary to connect an additional resistor that serves as the ESR in series with the output capacitor. The required resistance value is approximately 0.5 to 5 Ω, which varies depending on the usage conditions, so perform sufficient evaluation for selection. Ordinarily, around 1.0 Ω is recommended. Note that an aluminum electrolytic capacitor may increase the ESR at a low temperature, causing oscillation. When using this kind of capacitor, perform thorough evaluation, including evaluation of temperature characteristics. Seiko Instruments Inc. 13 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Precautions • Wiring patterns for the VIN, VOUT and GND pins should be designed so that the impedance is low. When mounting an output capacitor between the VOUT and VSS pins (CL) and a capacitor for stabilizing the input between VIN and VSS pins (CIN), the distance from the capacitors to these pins should be as short as possible. • Note that the output voltage may increase when a series regulator is used at low load current (1.0 mA or less). • This IC performs phase compensation by using an internal phase compensator and the ESR of an output capacitor. Therefore, always place a capacitor of 2.2 µF or more between VOUT and VSS pins. A tantalum type capacitor is recommended. Moreover, to secure stable operation of the S-1131 Series, it is necessary to employ a capacitor with an ESR within an optimum range (0.5 to 5 Ω). Using a capacitor whose ESR is outside the optimum range (approximately 0.5 to 5 Ω), whether larger or smaller, may cause an unstable output, resulting in oscillation. Perform sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature characteristics. • The voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is small or an input capacitor is not connected. • The application conditions for the input voltage, output voltage, and load current should not exceed the package power dissipation. • Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • In determining the output current, attention should be paid to the output current value specified in Table 6 in the electrical characteristics and footnote *5) of the table. • SII 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. 14 Seiko Instruments Inc. HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Characteristics (Typical Data) (1) Output voltage vs. Output current (when load current increases) S-1131B15 (Ta = 25°C) S-1131B30 (Ta = 25°C) 2.5 2.0 V 6.5 V 1.5 VOUT [V] VOUT [V] 2 1 VIN = 1.8 V 0.5 2.5 V 0 0 200 400 600 800 4 3.5 3 2.5 2 1.5 1 0.5 0 3.5 V 4.0 V VIN = 3.3 V 6.5 V 0 200 400 IOUT [mA] 600 800 IOUT [mA] S-1131B50 (Ta = 25°C) 6 6.5 V 5 VIN = 5.3 V VOUT [V] 4 3 5.5 V 2 6.0 V 1 0 0 200 400 600 800 Remark In determining the output current, attention should be paid to the following. 1) The minimum output current value and footnote *5 in the electrical characteristics 2) The package power dissipation IOUT [mA] (2) Output voltage vs. Input voltage S-1131B15 (Ta = 25°C) 1.6 S-1131B30 (Ta = 25°C) 3.05 50 mA IOUT = 1 mA 30 mA VOUT [V] VOUT [V] 1.55 1.5 80 mA 1.45 50 mA IOUT = 1 mA 3 2.95 30 mA 80 mA 2.9 2.85 1.4 2.8 1 1.5 2 2.5 3 3.5 2.5 VIN [V] 3 3.5 4 4.5 5 VIN [V] VOUT [V] S-1131B50 (Ta = 25°C) 5.1 5.08 5.06 5.04 5.02 5 4.98 4.96 4.94 4.92 4.9 IOUT = 1 mA 30 mA 4.5 50 mA 80 mA 5 5.5 6 6.5 7 VIN [V] Seiko Instruments Inc. 15 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series (3) Dropout voltage vs. Output current S-1131B15 S-1131B30 1.0 1.0 85°C 0.8 25°C 0.6 0.4 Vdrop [V] Vdrop [V] 0.8 –40°C 0.2 0 85°C 0.6 25°C 0.4 0.2 0 50 100 150 200 250 300 350 0 –40°C 0 IOUT [mA] 1.0 Vdrop [V] 0.8 85°C 0.4 25°C 0.2 0 –40°C 0 50 100 150 200 250 300 350 IOUT [mA] Vdrop [V] (4) Dropout voltage vs. Set output voltage 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 150 mA 100 mA 50 mA 30 mA 10 mA 0 1 2 3 4 5 6 7 VOTA [V] 16 100 150 200 IOUT [mA] S-1131B50 0.6 50 Seiko Instruments Inc. 250 300 350 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series S-1131B30 1.6 3.1 1.55 3.05 VOUT [V] VOUT [V] (5) Output voltage vs. Ambient temperature S-1131B15 1.5 1.45 3 2.95 2.9 1.4 −40 −20 0 20 80 60 40 −40 100 −20 0 20 Ta [°C] 40 60 80 100 Ta [°C] VOUT [V] S-1131B50 5.1 5.08 5.06 5.04 5.02 5 4.98 4.96 4.94 4.92 4.9 −40 0 −20 20 40 60 100 80 Ta [°C] 45 40 35 30 25 20 15 10 5 0 S-1131B30 25°C −40°C ISS1 [µA] ISS1 [µA] (6) Current consumption vs. Input voltage S-1131B15 85°C 0 2 4 6 45 40 35 30 25 20 15 10 5 0 8 VIN [V] 25°C 85°C −40°C 0 2 4 6 8 VIN [V] ISS1 [µA] S-1131B50 45 40 35 30 25 20 15 10 5 0 85°C −40°C 0 2 4 VIN [V] 25°C 6 8 Seiko Instruments Inc. 17 HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series (7) Ripple rejection S-1131B15 (Ta = 25°C) S-1131B30 (Ta = 25°C) VIN = 2.5 V, COUT = 2.2 µF VIN = 4.0 V, COUT = 2.2 µF 100 80 IOUT = 1 mA 60 40 30 mA 20 80 mA 0 10 100 1k 10 k 100 k 1M Ripple Rejection [dB] Ripple Rejection [dB] 100 80 IOUT = 1 mA 60 40 30 mA 20 0 80 mA 10 Frequency [Hz] VIN = 6.0 V, COUT = 2.2 µF Ripple Rejection [dB] 100 IOUT = 1 mA 60 40 30 mA 20 0 80 mA 10 100 1k 10 k 100 k 1M Frequency [Hz] 18 1k 10 k Frequency [Hz] S-1131B50 (Ta = 25°C) 80 100 Seiko Instruments Inc. 100 k 1M HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0_01 S-1131 Series Reference Data (1) Input transient response characteristics IOUT = 80 mA, tr = tf = 5.0 µs, COUT = 4.7 µF, CIN = 0 µF 6 3.02 6 3.015 5 3.015 5 3.01 4 3.01 3 VOUT 3 2 2.995 2.99 -20 0 20 40 60 80 4 V IN 3.005 3 V OUT 3 1 2.995 0 2.99 VIN [V] VIN 3.005 VOUT [V] 3.02 VIN [V] VOUT [V] IOUT = 80 mA, tr = tf = 5.0 µs, COUT = 2.2 µF, CIN = 0 µF 2 1 0 -20 100 120 140 160 180 0 20 40 60 t [µs] 80 100 120 140 160 180 t [µs] (2) Load transient response characteristics VIN = 4.0 V, COUT = 4.7 µF, CIN = 1.0 µF, IOUT = 50↔100 mA 3.2 150 3.2 150 3.15 100 3.15 100 -50 3 VOUT 2.95 2.9 -2 0 2 4 6 8 10 12 14 16 VOUT [V] 0 IOUT [mA] VOUT [V] IOUT 50 3.1 50 3.1 3.05 IOUT 3.05 0 -50 3 -100 2.95 -150 2.9 VOUT -100 -150 -2 18 IOUT [mA] VIN = 4.0 V, COUT = 2.2 µF, CIN = 1.0 µF, IOUT = 50↔100 mA 0 2 4 6 t [µs] 8 10 12 14 16 18 t [µs] (3) Shutdown pin transient response characteristics S-1131B15 (Ta = 25°C) S-1131B30 (Ta = 25°C) VIN = 4.0 V, COUT = 2.2 µF, CIN = 1.0 µF 5 6 2 2 4 4 1 3 2 VON/OFF VOUT [V] 1.5 VOUT 1 0 VOUT [V] 3 VON/OFF [V] 2.5 2 0.5 -1 0 -2 0 -3 -1 -0.5 -10 0 10 20 30 40 50 60 70 80 90 VOUT 1 0 VON/OFF -2 VON/OFF [V] VIN = 2.5 V, COUT = 2.2 µF, CIN = 1.0 µF -4 -6 -10 t [µs] 0 10 20 30 40 50 60 70 80 90 t [µs] S-1131B50 (Ta = 25°C) VIN = 6.0 V, COUT = 2.2 µF, CIN = 1.0 µF 7 8 6 6 4 V ON/OFF 4 2 V OUT 3 0 2 -2 1 -4 0 -6 VON/OFF [V] VOUT [V] 5 -8 -1 -10 0 10 20 30 40 50 60 70 80 90 t [µs] Seiko Instruments Inc. 19 4.5±0.1 1.5±0.1 1.6±0.2 1 2 3 1.5±0.1 1.5±0.1 0.4±0.05 45° 0.4±0.1 0.4±0.1 0.45±0.1 No. UP003-A-P-SD-1.1 TITLE SOT893-A-PKG Dimensions No. UP003-A-P-SD-1.1 SCALE UNIT mm Seiko Instruments Inc. +0.1 ø1.5 -0 4.0±0.1(10 pitches : 40.0±0.2) 2.0±0.05 ø1.5 +0.1 -0 5° max. 0.3±0.05 8.0±0.1 2.0±0.1 4.75±0.1 Feed direction No. UP003-A-C-SD-1.1 TITLE SOT893-A-Carrier Tape No. UP003-A-C-SD-1.1 SCALE UNIT mm Seiko Instruments Inc. 16.5max. 13.0±0.3 Enlarged drawing in the central part (60°) (60°) No. UP003-A-R-SD-1.1 SOT893-A-Reel TITLE No. UP003-A-R-SD-1.1 SCALE UNIT QTY. mm Seiko Instruments Inc. 1,000 4.5±0.1 1.5±0.1 1.6±0.2 5 1 4 2 3 1.5±0.1 1.5±0.1 0.4±0.05 0.3 0.4±0.1 0.4±0.1 45° 0.45±0.1 No. UP005-A-P-SD-1.1 TITLE SOT895-A-PKG Dimensions UP005-A-P-SD-1.1 No. SCALE UNIT mm Seiko Instruments Inc. 4.0±0.1(10 pitches : 40.0±0.2) ø1.5 +0.1 -0 2.0±0.05 5° max. ø1.5 +0.1 -0 0.3±0.05 8.0±0.1 2.0±0.1 4.75±0.1 3 2 1 4 5 Feed direction No. UP005-A-C-SD-1.1 TITLE SOT895-A-Carrier Tape UP005-A-C-SD-1.1 No. SCALE UNIT mm Seiko Instruments Inc. 16.5max. 13.0±0.3 Enlarged drawing in the central part (60°) (60°) No. UP005-A-R-SD-1.1 TITLE SOT895-A-Reel No. UP005-A-R-SD-1.1 SCALE QTY. UNIT mm Seiko Instruments Inc. 1,000 2.90±0.1 0.5typ. +0.1 0.30 -0.05 0.95±0.05 (1.5) No. PD006-A-P-SD-4.0 TITLE The exposed thermal die pad has different electric potential depending on the product. Confirm specifications of each product. Do not use it as the function of electrode. HSON6A-A-PKG Dimensions No. PD006-A-P-SD-4.0 SCALE UNIT mm Seiko Instruments Inc. 4.0±0.1 1.5±0.1 2.0±0.05 ø1.55±0.05 0.2±0.05 3.3±0.1 3 1 4 6 ø1.05±0.05 4.0±0.1 Feed direction No. PD006-A-C-SD-2.0 TITLE HSON6A-A-Carrier Tape PD006-A-C-SD-2.0 No. SCALE UNIT mm Seiko Instruments Inc. 12.5max. 9.0±0.3 Enlarged drawing in the central part ø13±0.2 (60°) (60°) No. PD006-A-R-SD-1.0 TITLE HSON6A-A-Reel No. PD006-A-R-SD-1.0 SCALE UNIT QTY. mm Seiko Instruments Inc. 3000 • • • • • • The information described herein is subject to change without notice. Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein whose related industrial properties, patents, or other rights belong to third parties. The application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design. When the products described herein are regulated products subject to the Wassenaar Arrangement or other agreements, they may not be exported without authorization from the appropriate governmental authority. Use of the information described herein for other purposes and/or reproduction or copying without the express permission of Seiko Instruments Inc. is strictly prohibited. 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