Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series The S-1111/1121 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 a small SOT-23-5 package realize high-density mounting. The lineup includes the S-1111 and S-1121 Series, which differ in pin configuration. 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% 200 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. 150 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-23-5 *1. Attention should be paid to the power dissipation of the package when the output current is large. Applications • Power supply for battery-powered devices • Power supply for personal communication devices • Power supply for home electric/electronic appliances • Power supply for cellular phones Package Package Name SOT-23-5 Package MP005-A Drawing Code Tape MP005-A Seiko Instruments Inc. Reel MP005-A 1 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series Block Diagram *1 VIN VOUT Overcurrent protector + ON/OFF circuit ON/OFF − Reference voltage circuit VSS *1. Parasitic diode Figure 1 2 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Product Name Structure • The product types and output voltage for the S-1111/1121 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-1111 Series) S-1111 x xx MC – xxx TF G IC direction in tape specifications*1 Product name (abbreviation)*2 Package name (abbreviation) MC: SOT-23-5 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 (ON/OFF pin) in the “Operation”. Seiko Instruments Inc. 3 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series 2. Product name list (S-1111 Series) Table 1 Output Voltage SOT-23-5 1.5V±1.0% S-1111B15MC-NYATFG 1.6V±1.0% S-1111B16MC-NYBTFG 1.7V±1.0% S-1111B17MC-NYCTFG 1.8V±1.0% S-1111B18MC-NYDTFG 1.9V±1.0% S-1111B19MC-NYETFG 2.0V±1.0% S-1111B20MC-NYFTFG 2.1V±1.0% S-1111B21MC-NYGTFG 2.2V±1.0% S-1111B22MC-NYHTFG 2.3V±1.0% S-1111B23MC-NYITFG 2.4V±1.0% S-1111B24MC-NYJTFG 2.5V±1.0% S-1111B25MC-NYKTFG 2.6V±1.0% S-1111B26MC-NYLTFG 2.7V±1.0% S-1111B27MC-NYMTFG 2.8V±1.0% S-1111B28MC-NYNTFG 2.9V±1.0% S-1111B29MC-NYOTFG 3.0V±1.0% S-1111B30MC-NYPTFG 3.1V±1.0% S-1111B31MC-NYQTFG 3.2V±1.0% S-1111B32MC-NYRTFG 3.3V±1.0% S-1111B33MC-NYSTFG 3.4V±1.0% S-1111B34MC-NYTTFG 3.5V±1.0% S-1111B35MC-NYUTFG 3.6V±1.0% S-1111B36MC-NYVTFG 3.7V±1.0% S-1111B37MC-NYWTFG 3.8V±1.0% S-1111B38MC-NYXTFG 3.9V±1.0% S-1111B39MC-NYYTFG 4.0V±1.0% S-1111B40MC-NYZTFG 4.1V±1.0% S-1111B41MC-NZATFG 4.2V±1.0% S-1111B42MC-NZBTFG 4.3V±1.0% S-1111B43MC-NZCTFG 4.4V±1.0% S-1111B44MC-NZDTFG 4.5V±1.0% S-1111B45MC-NZETFG 4.6V±1.0% S-1111B46MC-NZFTFG 4.7V±1.0% S-1111B47MC-NZGTFG － 4.75V±1.0% 4.8V±1.0% S-1111B48MC-NZHTFG 4.9V±1.0% S-1111B49MC-NZITFG 5.0V±1.0% S-1111B50MC-NZJTFG 5.1V±1.0% S-1111B51MC-NZKTFG 5.2V±1.0% S-1111B52MC-NZLTFG 5.3V±1.0% S-1111B53MC-NZMTFG 5.4V±1.0% S-1111B54MC-NZNTFG 5.5V±1.0% S-1111B55MC-NZOTFG Remark Please contact our sales office for type A products. 4 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series 3. Product name (S-1121 Series) S-1121 x xx MC – xxx TF G IC direction in tape specifications*1 Product name (abbreviation)*2 Package name (abbreviation) MC: SOT-23-5 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”. Seiko Instruments Inc. 5 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series 4. Product name list (S-1121 Series) Table 2 Output Voltage SOT-23-5 1.5V±1.0% S-1121B15MC-N2ATFG 1.6V±1.0% S-1121B16MC-N2BTFG 1.7V±1.0% S-1121B17MC-N2CTFG 1.8V±1.0% S-1121B18MC-N2DTFG 1.9V±1.0% S-1121B19MC-N2ETFG 2.0V±1.0% S-1121B20MC-N2FTFG 2.1V±1.0% S-1121B21MC-N2GTFG 2.2V±1.0% S-1121B22MC-N2HTFG 2.3V±1.0% S-1121B23MC-N2ITFG 2.4V±1.0% S-1121B24MC-N2JTFG 2.5V±1.0% S-1121B25MC-N2KTFG 2.6V±1.0% S-1121B26MC-N2LTFG 2.7V±1.0% S-1121B27MC-N2MTFG 2.8V±1.0% S-1121B28MC-N2NTFG 2.9V±1.0% S-1121B29MC-N2OTFG 3.0V±1.0% S-1121B30MC-N2PTFG 3.1V±1.0% S-1121B31MC-N2QTFG 3.2V±1.0% S-1121B32MC-N2RTFG 3.3V±1.0% S-1121B33MC-N2STFG 3.4V±1.0% S-1121B34MC-N2TTFG 3.5V±1.0% S-1121B35MC-N2UTFG 3.6V±1.0% S-1121B36MC-N2VTFG 3.7V±1.0% S-1121B37MC-N2WTFG 3.8V±1.0% S-1121B38MC-N2XTFG 3.9V±1.0% S-1121B39MC-N2YTFG 4.0V±1.0% S-1121B40MC-N2ZTFG 4.1V±1.0% S-1121B41MC-N3ATFG 4.2V±1.0% S-1121B42MC-N3BTFG 4.3V±1.0% S-1121B43MC-N3CTFG 4.4V±1.0% S-1121B44MC-N3DTFG 4.5V±1.0% S-1121B45MC-N3ETFG 4.6V±1.0% S-1121B46MC-N3FTFG 4.7V±1.0% S-1121B47MC-N3GTFG 4.75V±1.0% S-1121B4HMC-N3PTFG 4.8V±1.0% S-1121B48MC-N3HTFG 4.9V±1.0% S-1121B49MC-N3ITFG 5.0V±1.0% S-1121B50MC-N3JTFG 5.1V±1.0% S-1121B51MC-N3KTFG 5.2V±1.0% S-1121B52MC-N3LTFG 5.3V±1.0% S-1121B53MC-N3MTFG 5.4V±1.0% S-1121B54MC-N3NTFG 5.5V±1.0% S-1121B55MC-N3OTFG Remark Please contact our sales office for type A products. 6 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Pin Configuration Table 3 SOT-23-5 Top view 5 1 4 2 Figure 2 (S-1111 Series) Pin No. Symbol Description 1 VIN Input voltage pin 2 VSS GND pin 3 ON/OFF Shutdown pin 4 NC*1 No connection 5 VOUT Output voltage pin *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. 3 Table 4 (S-1121 Series) Pin No. Symbol Description 1 VOUT Output voltage pin 2 VSS GND pin 3 VIN Input voltage pin 4 ON/OFF Shutdown pin 5 NC*1 No connection *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. Seiko Instruments Inc. 7 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series Absolute Maximum Ratings Table 5 Item Symbol VIN VON/OFF VOUT Input voltage Output voltage Power dissipation PD (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 + 0.3 300 (When not mounted on board) mW mW 600*1 −40 to +85 °C −40 to +125 °C Operating ambient temperature Topr Storage temperature Tstg *1. When mounted on board [Mounted on board] (1) Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Board name : JEDEC STANDARD51-7 Power dissipation (PD) [mW] 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. 700 600 500 400 300 200 100 0 0 100 150 50 Ambient temperature (Ta) [°C] Figure 3 Power Dissipation of Package (When Mounted on Board) 8 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Electrical Characteristics Table 6 (Ta = 25 °C unless otherwise specified) Item Symbol Conditions Unit Test Circuit V 1 mA V V V V V 3 1 1 1 1 1 0.2 %/V 1 20 40 mV 1 ⎯ ±100 ⎯ ppm / °C 1 ⎯ 35 65 μA 2 ⎯ 0.1 1.0 1 2 2.0 ⎯ 6.5 V ⎯ Min. Typ. Max. VOUT(S) × 0.99 150*5 ⎯ ⎯ ⎯ ⎯ ⎯ VOUT(S) ⎯ 0.60 0.35 0.24 0.20 0.17 VOUT(S) × 1.01 ⎯ 1.40 0.70 0.35 0.30 0.26 ⎯ 0.05 ⎯ Output voltage*1 VOUT(E) VIN = VOUT(S) + 1.0 V, IOUT = 30 mA Output current*2 Dropout voltage*3 IOUT Vdrop Line regulation ΔVOUT1 ΔVIN• VOUT Load regulation ΔVOUT2 VIN VIN ≥ VOUT(S) + 1.0 V IOUT = 100 mA 1.5 V ≤ VOUT(S) ≤ 1.9 V 2.0 V ≤ VOUT(S) ≤ 2.4 V 2.5 V ≤ VOUT(S) ≤ 2.7 V 2.8 V ≤ VOUT(S) ≤ 3.3 V 3.4 V ≤ VOUT(S) ≤ 5.5 V VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V, IOUT = 30 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, ON/OFF pin = OFF, no load ⎯ 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 ⎯ 70 ⎯ dB 5 ⎯ 250 ⎯ mA 3 Output voltage *4 temperature coefficient Current consumption during operation Current consumption during shutdown Input voltage Shutdown pin input voltage “H” Shutdown pin input voltage “L” Shutdown pin input current “H” Shutdown pin input current “L” Ripple rejection Short-circuit current ΔVOUT ΔTa • VOUT ISS1 ISS2 RR Ishort VIN = VOUT(S) + 1.0 V, f = 1.0 kHz, ΔVrip = 0.5 Vrms, IOUT = 30 mA VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON, VOUT = 0 V *1. VOUT(S): Specified output voltage VOUT(E): Actual output voltage at the fixed load The output voltage when fixing IOUT(= 30 mA) and inputting VOUT(S) + 1.0 V *2. The output current at which the output voltage becomes 95% of VOUT(E) 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. ΔVOUT [mV/ °C]*1 = VOUT(S)[V ]*2 × ΔVOUT [ppm/ °C]*3 ÷ 1000 ΔTa ΔTa • 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. 9 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series Test Circuits 1. + VOUT VIN A + V ON/OFF VSS Set to power ON Figure 4 2. + A VIN ON/OFF VOUT VSS Set to VIN or GND Figure 5 3. VIN VOUT + A + ON/OFF V VSS Set to power ON Figure 6 4. VIN VOUT + + A ON/OFF VSS RL V Figure 7 5. VIN VOUT + ON/OFF VSS V RL Set to Power ON Figure 8 10 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Standard Circuit Output Input VIN *1 CIN VOUT ON/OFF VSS Single GND *2 CL GND *1. CIN is a capacitor for stabilizing the input. *2. A tantalum capacitor (2.2 μF or more) can be used. Figure 9 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. 11 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 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. ⎛ ΔV OUT1 3. Line regulation ⎜⎜ ⎝ ΔV IN • V OUT ⎞ ⎟⎟ ⎠ 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 (ΔVOUT2) 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) 12 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series ⎛ Δ V OUT ⎞ 6. Temperatur e coefficien t of output voltage ⎜⎜ ⎟⎟ ⎝ Δ Ta • V OUT ⎠ The shadowed area in Figure 10 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-1111/1121B28 Typ. VOUT [V] +0.28 mV / °C VOUT(E)*1 −0.28 mV / °C −40 *1. 25 85 Ta [°C] VOUT(E) is the value of the output voltage measured at 25°C. Figure 10 A change in the temperature of the output voltage [mV/°C] is calculated using the following equation. ΔVOUT [mV/ °C]*1 = VOUT(S)[V ]*2 × ΔVOUT [ppm/ °C]*3 ÷ 1000 ΔTa ΔTa • VOUT *1. Change in temperature of output voltage *2. Specified output voltage *3. Output voltage temperature coefficient Seiko Instruments Inc. 13 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series Operation 1. Basic operation Figure 11 shows the block diagram of the S-1111/1121 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 11 2. Output transistor The S-1111/1121 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. 14 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series 3. Shutdown pin (ON/OFF pin) This pin starts and stops 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 12. 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 A A B B ON/OFF Pin “L”: Power on “H”: Power off “L”: Power off “H”: Power on Internal Circuits Operating Stopped Stopped Operating VOUT Pin Voltage Set value VSS level VSS level Set value Current Consumption ISS1 ISS2 ISS2 ISS1 VIN ON/OFF VSS Figure 12 Selection of Output Capacitor (CL) The S-1111/1121 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-1111/1121 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. 15 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 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-1111/1121 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. 16 Seiko Instruments Inc. Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Characteristics (Typical Data) Remark The following, which describes the S-1111 Series as the typical product, shows typical data common to the S-1121 Series. (1) Output Voltage vs. Output current (when load current increases) S-1111B15 (Ta = 25 °C) S-1111B30 (Ta = 25 °C) 2.5 2 2.0 V 1 VOUT [V] VOUT [V] 1.5 VIN = 1.8 V 0.5 6.5 V 2.5 V 0 0 100 200 300 400 500 600 4 3.5 3 2.5 2 1.5 1 0.5 0 4.0 V 6.5 V 3.5 V VIN = 3.3 V 0 100 IOUT [mA] 200 300 400 500 600 IOUT [mA] S-1111B50 (Ta = 25 °C) 6 5 VOUT [V] 4 6.5 V 6.0 V 3 2 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 5.5 V 1 VIN = 5.3 V 0 0 100 200 300 400 500 600 IOUT [mA] (2) Output voltage vs. Input voltage S-1111B15 (Ta = 25 °C) S-1111B30 (Ta = 25 °C) 1.6 3.05 50 mA 50 mA IOUT = 1 mA 1.55 2.95 VOUT [V] VOUT [V] 30 mA 1.5 80 mA 1.45 IOUT = 1 mA 3 1.4 30 mA 80 mA 2.9 2.85 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-1111B50 (Ta = 25 °C) 5.1 5.08 5.06 5.04 5.02 5 30 mA 4.98 4.96 4.94 4.92 4.9 4.5 5 IOUT = 1 mA 50 mA 80 mA 5.5 6 6.5 7 VIN [V] Seiko Instruments Inc. 17 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 S-1111B30 0.3 0.25 25°C 85°C -40°C 0.15 0 50 100 150 200 0.25 0.2 85°C 25°C 0.15 0.1 −40°C 0.05 0 0 50 100 150 200 IOUT [mA] (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 0 50 100 IOUT [mA] S-1111B50 Vdrop [V] -40°C 0.1 IOUT [mA] Vdrop [V] 25°C 0.05 0 4 5 6 7 VOTA [V] 18 85°C 0.2 Vdrop [V] Vdrop [V] (3) Dropout voltage vs. Output current S-1111B15 Seiko Instruments Inc. 150 200 Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series S-1111B30 1.6 3.1 1.55 3.05 VOUT [V] VOUT [V] (5) Output voltage vs. Ambient temperature S-1111B15 1.5 1.45 3 2.95 1.4 -40 -20 0 20 40 60 80 2.9 -40 100 -20 0 Ta [°C] 20 40 60 80 100 Ta [°C] VOUT [V] S-1111B50 5.1 5.08 5.06 5.04 5.02 5 4.98 4.96 4.94 4.92 4.9 -40 -20 0 20 40 60 80 100 Ta [°C] 45 40 35 30 25 20 15 10 5 0 S-1111B30 25°C 85°C ISS1 [μA] ISS1 [μA] (6) Current consumption vs. Input voltage S-1111B15 −40°C 0 2 4 VIN [V] 6 45 40 35 30 25 20 15 10 5 0 8 25°C 85°C −40°C 0 2 4 VIN [V] 6 8 ISS1 [μA] S-1111B50 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. 19 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.4.1_00 S-1111/1121 Series (7) Ripple rejection S-1111B15 (Ta = 25 °C) S-1111B30 (Ta = 25 °C) VIN = 2.5 V, COUT = 2.2 μF VIN = 4.0 V, COUT = 2.2 μF 100 80 Ripple Rejection [dB] Ripple Rejection [dB] 100 IOUT = 1 mA 60 40 30 mA 20 0 50 mA 80 60 40 30 mA 20 0 10 100 1k 10 k Frequency [Hz] 100 k 1M S-1111B50 (Ta = 25 °C) VIN = 6.0 V, COUT = 2.2 μF Ripple Rejection [dB] 100 80 IOUT = 1 mA 60 40 30 mA 20 0 50 mA 10 100 1k 10 k 100 k 1M Frequency [Hz] 20 IOUT = 1 mA Seiko Instruments Inc. 50 mA 10 100 1k 10 k Frequency [Hz] 100 k 1M Rev.4.1_00 HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1111/1121 Series Reference Data (1) Input transient response characteristics IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 4.7 μF, CIN = 0 μF 6 3.025 6 3.02 5 3.02 5 3.015 4 3.015 3 V OUT 3.005 2 3 2.995 -20 0 20 40 60 80 4 VIN 3.01 3 VOUT 3.005 2 1 3 1 0 2.995 VIN [V] V IN 3.01 VOUT [V] 3.025 VIN [V] VOUT [V] IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 2.2 μF, CIN = 0 μF 0 100 120 140 160 180 -20 0 20 40 60 t [μs] 80 100 120 140 160 180 t [μs] (2) Load transient response characteristics 150 3.2 150 3.15 100 3.15 100 3.1 50 3.1 50 3.05 0 IOUT VOUT [V] 3.2 IOUT 3.05 0 3 -50 3 -50 2.95 -100 2.95 -100 -150 2.9 VOUT 2.9 -2 0 2 4 6 8 10 12 14 16 18 VOUT -2 0 2 4 6 t [μs] 8 10 12 14 16 IOUT [mA] VIN = 4.0 V, COUT = 4.7 μF, CIN = 1.0 μF, IOUT = 50↔100 mA IOUT [mA] VOUT [V] VIN = 4.0 V, COUT = 2.2 μF, CIN = 1.0 μF, IOUT = 50↔100 mA -150 18 t [μs] (3) Shutdown pin transient response characteristics S-1111B15 (Ta = 25 °C) S-1111B30 (Ta = 25 °C) VIN = 2.5 V, COUT = 2.2 μF, CIN = 1.0 μF VIN = 4.0 V, COUT = 2.2 μF, CIN = 1.0 μF 2.5 VON/OFF 5 2 4 0 VOUT 20 30 40 50 60 70 80 0 VOUT -2 0 -4 -3 -1 0 10 2 2 -2 -1 -0.5 3 1 0.5 0 4 -6 -10 90 VON/OFF [V] 1 1 VOUT [V] 1.5 -10 6 VON/OFF VON/OFF [V] VOUT [V] 2 3 t [μs] 0 10 20 30 40 50 60 70 80 90 t [μs] S-1111B50 (Ta = 25 °C) VIN = 6.0 V, COUT = 2.2 μF, CIN = 1.0 μF 7 8 6 6 VON/OFF 4 VOUT [V] 4 2 3 0 VOUT 2 -2 1 -4 0 -6 -1 VON/OFF [V] 5 -8 -10 0 10 20 30 40 50 60 70 80 90 t [μs] Seiko Instruments Inc. 21 2.9±0.2 1.9±0.2 4 5 1 2 +0.1 0.16 -0.06 3 0.95±0.1 0.4±0.1 No. MP005-A-P-SD-1.2 TITLE No. SOT235-A-PKG Dimensions MP005-A-P-SD-1.2 SCALE UNIT mm Seiko Instruments Inc. 4.0±0.1(10 pitches:40.0±0.2) +0.1 ø1.5 -0 2.0±0.05 +0.2 ø1.0 -0 0.25±0.1 4.0±0.1 1.4±0.2 3.2±0.2 3 2 1 4 5 Feed direction No. MP005-A-C-SD-2.1 TITLE SOT235-A-Carrier Tape No. MP005-A-C-SD-2.1 SCALE UNIT mm Seiko Instruments Inc. 12.5max. 9.0±0.3 Enlarged drawing in the central part ø13±0.2 (60°) (60°) No. MP005-A-R-SD-1.1 SOT235-A-Reel TITLE No. MP005-A-R-SD-1.1 SCALE QTY. UNIT mm Seiko Instruments Inc. 3,000 • • • • • • 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. The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc. Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may occur. The user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.