Rev.1.0_00 SUPER-LOW OUTPUT LOW DROPOUT CMOS VOLTAGE REGULATOR S-11L10 Series S-11L10 Series, developed using the CMOS technology, is a positive voltage regulator IC which has the low output voltage, the high-accuracy output voltage and the low current consumption (150 mA output current). A 1.0 µF small ceramic capacitor can be used. It operates with low current consumption of 9 µA typ. The overcurrent protection circuit prevents the load current from exceeding the capacitance of output transistor. The power-off circuit ensures longer battery life. Various capacitors, also small ceramic capacitors, can be used for this IC more than for the conventional regulator ICs which have CMOS technology. Furthermore a small SOT-23-5 and SNT-6A(H) packages realize high-density mounting. Features • Low output voltage: • Low input voltage: • Low equivalent series resistance capacitor : • High-accuracy output voltage: • Low dropout voltage: • Low current consumption: 0.8 V to 3.3 V, selectable in 0.05 V step. 1.2 V to 3.65 V Ceramic capacitor of 1.0 µF or more can be used as the I/O capacitor. ±1.0% (0.8 V to 1.45 V output product : ±15 mV) 210 mV typ. (products having the output of 1.5 V, IOUT = 100 mA) During operation: 9.0 µA typ., 16 µA max. During power-off: 0.1 µA typ., 0.9 µA max. Possible to output 150 mA (at VIN ≥ VOUT(S) + 1.0 V)*1 60 dB typ. (at 1.0 kHz, VOUT = 1.25 V) limits overcurrent of output transistor Ensures long battery life. • Output current: • Ripple rejection: • Built-in overcurrent protection circuit: • Built-in power-off circuit: • Discharge shunt function • Selectable constant current source pull-down • Small package: SOT-23-5, SNT-6A(H) • Lead-free product *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 mobile phones • Power supply for portable equipment Package Package Name SOT-23-5 SNT-6A(H) Drawing Code Package Tape Reel Land MP005-A PI006-A MP005-A PI006-A MP005-A PI006-A PI006-A Seiko Instruments Inc. 1 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Block Diagrams 1. S-11L10 Series B type *1 VIN VOUT Function ON / OFF logic Constant current source pull-down Status Active “H” Available Overcurrent protection circuit ON / OFF Power-off circuit + − Reference voltage circuit *1 VSS *1. Parasitic diode Figure 1 2. S-11L10 Series D type *1 VIN VOUT Overcurrent protection circuit ON / OFF Power-off circuit + − Reference voltage circuit *1 VSS *1. Parasitic diode Figure 2 2 Seiko Instruments Inc. Function ON / OFF logic Constant current source pull-down Status Active “H” None SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Product Name Structure Users can select the product type, output voltage, and package type for the S-11L10 Series. Refer to “1. Product name” regarding the contents of product name, “2. Function list of product type” regarding the product type. 1. Product name (1) SNT-6A(H) S-11L10 x − xx I6T2 G Package abbreviation and IC packing specifications*1 I6T2: SNT-6A(H), Tape *2 Output voltage 08 to 33 (e.g., when the output voltage is 1.0 V, it is expressed as 10.) Product type*3 B, D *1. *2. *3. Refer to the tape specifications. If you request the product which has 0.05 V step, contact our sales office. Refer to “2. Function list of product type”. (2) SOT-23-5 S-11L10 x − xx M5T1 U Package abbreviation and IC packing specifications*1 M5T1: SOT-23-5, Tape Output voltage*2 08 to 33 (e.g., when the output voltage is 1.0 V, it is expressed as 10.) Product type*3 B, D *1. *2. *3. 2. Refer to the tape specifications. If you request the product which has 0.05 V step, contact our sales office. Refer to “2. Function list of product type”. Function list of product type Table 1 Product Type ON / OFF Logic Constant Current Source Pull-down B Active “H” Available D Active “H” None Seiko Instruments Inc. 3 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series 3. Product name list 3. 1 S-11L10 Series B type ON / OFF logic: Active “H” Constant current source pull-down: Available Table 2 Output voltage 0.8 V±15 mV Remark 4 SOT-23-5 S-11L10B08-M5T1U SNT-6A(H) S-11L10B08-I6T2G S-11L10B09-M5T1U S-11L10B09-I6T2G 0.9 V±15 mV 1.0 V±15 mV S-11L10B10-M5T1U S-11L10B10-I6T2G 1.1 V±15 mV S-11L10B11-M5T1U S-11L10B11-I6T2G 1.2 V±15 mV S-11L10B12-M5T1U S-11L10B12-I6T2G 1.3 V±15 mV S-11L10B13-M5T1U S-11L10B13-I6T2G 1.4 V±15 mV S-11L10B14-M5T1U S-11L10B14-I6T2G 1.5 V±1.0% S-11L10B15-M5T1U S-11L10B15-I6T2G 1.6 V±1.0% S-11L10B16-M5T1U S-11L10B16-I6T2G 1.7 V±1.0% S-11L10B17-M5T1U S-11L10B17-I6T2G 1.8 V±1.0% S-11L10B18-M5T1U S-11L10B18-I6T2G 1.9 V±1.0% S-11L10B19-M5T1U S-11L10B19-I6T2G 2.0 V±1.0% S-11L10B20-M5T1U S-11L10B20-I6T2G 2.1 V±1.0% S-11L10B21-M5T1U S-11L10B21-I6T2G 2.2 V±1.0% S-11L10B22-M5T1U S-11L10B22-I6T2G 2.3 V±1.0% S-11L10B23-M5T1U S-11L10B23-I6T2G 2.4 V±1.0% S-11L10B24-M5T1U S-11L10B24-I6T2G 2.5 V±1.0% S-11L10B25-M5T1U S-11L10B25-I6T2G 2.6 V±1.0% S-11L10B26-M5T1U S-11L10B26-I6T2G 2.7 V±1.0% S-11L10B27-M5T1U S-11L10B27-I6T2G 2.8 V±1.0% S-11L10B28-M5T1U S-11L10B28-I6T2G 2.9 V±1.0% S-11L10B29-M5T1U S-11L10B29-I6T2G 3.0 V±1.0% S-11L10B30-M5T1U S-11L10B30-I6T2G 3.1 V±1.0% S-11L10B31-M5T1U S-11L10B31-I6T2G 3.2 V±1.0% S-11L10B32-M5T1U S-11L10B32-I6T2G 3.3 V±1.0% S-11L10B33-M5T1U S-11L10B33-I6T2G Please contact our sales office for products with specifications other than the above. Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series 3. 2 S-11L10 Series D type ON / OFF logic: Active “H” Constant current source pull-down: None Table 3 Output voltage 0.8 V±15 mV Remark SOT-23-5 S-11L10D08-M5T1U SNT-6A(H) S-11L10D08-I6T2G S-11L10D09-M5T1U S-11L10D09-I6T2G 0.9 V±15 mV 1.0 V±15 mV S-11L10D10-M5T1U S-11L10D10-I6T2G 1.1 V±15 mV S-11L10D11-M5T1U S-11L10D11-I6T2G 1.2 V±15 mV S-11L10D12-M5T1U S-11L10D12-I6T2G 1.3 V±15 mV S-11L10D13-M5T1U S-11L10D13-I6T2G 1.4 V±15 mV S-11L10D14-M5T1U S-11L10D14-I6T2G 1.5 V±1.0% S-11L10D15-M5T1U S-11L10D15-I6T2G 1.6 V±1.0% S-11L10D16-M5T1U S-11L10D16-I6T2G 1.7 V±1.0% S-11L10D17-M5T1U S-11L10D17-I6T2G 1.8 V±1.0% S-11L10D18-M5T1U S-11L10D18-I6T2G 1.9 V±1.0% S-11L10D19-M5T1U S-11L10D19-I6T2G 2.0 V±1.0% S-11L10D20-M5T1U S-11L10D20-I6T2G 2.1 V±1.0% S-11L10D21-M5T1U S-11L10D21-I6T2G 2.2 V±1.0% S-11L10D22-M5T1U S-11L10D22-I6T2G 2.3 V±1.0% S-11L10D23-M5T1U S-11L10D23-I6T2G 2.4 V±1.0% S-11L10D24-M5T1U S-11L10D24-I6T2G 2.5 V±1.0% S-11L10D25-M5T1U S-11L10D25-I6T2G 2.6 V±1.0% S-11L10D26-M5T1U S-11L10D26-I6T2G 2.7 V±1.0% S-11L10D27-M5T1U S-11L10D27-I6T2G 2.8 V±1.0% S-11L10D28-M5T1U S-11L10D28-I6T2G 2.9 V±1.0% S-11L10D29-M5T1U S-11L10D29-I6T2G 3.0 V±1.0% S-11L10D30-M5T1U S-11L10D30-I6T2G 3.1 V±1.0% S-11L10D31-M5T1U S-11L10D31-I6T2G 3.2 V±1.0% S-11L10D32-M5T1U S-11L10D32-I6T2G 3.3 V±1.0% S-11L10D33-M5T1U S-11L10D33-I6T2G Please contact our sales office for products with specifications other than the above. Seiko Instruments Inc. 5 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Pin Configuration SOT-23-5 Top view 5 4 *1. 1 2 Table 4 Pin No. Symbol Description 1 VIN Input voltage pin 2 VSS GND pin 3 ON / OFF ON / OFF pin 4 No connection NC*1 5 VOUT Output voltage pin The NC pin is electrically open. The NC pin can be connected to VIN or VSS. 3 Figure 3 SNT-6A(H) Top view 1 6 2 5 3 4 *1. Table 5 Pin No. Symbol Description 1 VOUT Output voltage pin 2 VSS GND pin 3 No connection NC*1 4 ON / OFF ON / OFF pin 5 VSS GND pin 6 VIN Input voltage pin The NC pin is electrically open. The NC pin can be connected to VIN or VSS. Figure 4 6 Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Absolute Maximum Ratings Table 6 Item Symbol VIN VON / OFF VOUT Input voltage Output voltage SOT-23-5 PD SNT-6A(H) Operating ambient temperature Topr Storage temperature Tstg *1. When mounted on board [Mounted board] (1) Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Name : JEDEC STANDARD51-7 Power dissipation VSS − 0.3 to VSS + 4.0 VSS − 0.3 to VIN + 0.3 VSS − 0.3 to VIN + 0.3 600*1 500*1 −40 to +85 −40 to +125 V V V mW mW °C °C 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. SOT-23-5 Power Dissiaption (PD) [mW] Caution (Ta = 25°C unless otherwise specified) Absolute Maximum Rating Unit 600 SNT-6A(H) 400 200 0 0 150 100 50 Ambient Temperature (Ta) [°C] Figure 5 Power Dissipation of Package Seiko Instruments Inc. 7 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Electrical Characteristics Table 7 (1 / 2) Item Output voltage*1 Symbol VOUT(E) Output current*2 IOUT Dropout voltage*3 Vdrop Line regulation Load regulation Output voltage temperature coefficient*4 Current consumption during operation Current consumption during power-off 8 ∆VOUT1 ∆VIN • VOUT ∆VOUT2 ∆VOUT ∆Ta • VOUT ISS1 ISS2 Conditions 0.8 V ≤ VOUT(S) ≤ 2.65 V 2.65 V < VOUT(S) ≤ 3.3 V 0.8 V ≤ VOUT(S) < 1.1 V 1.1 V ≤ VOUT(S) < 1.3 V 1.3 V ≤ VOUT(S) < 1.5 V 1.5 V ≤ VOUT(S) < 1.7 V 1.7 V ≤ VOUT(S) ≤ 3.3 V VOUT(S) − 0.015 VOUT(S) × 0.99 VOUT(S) × 0.99 150*5 150*5 0.40 0.8 V ≤ VOUT(S) < 2.9 V 0.05 0.2 %/V 1 2.9 V ≤ VOUT(S) ≤ 3.3 V 0.05 0.2 %/V 1 0.8 V ≤ VOUT(S) ≤ 2.65 V 20 40 mV 1 2.65 V < VOUT(S) ≤ 3.3 V 20 40 mV 1 0.8 V ≤ VOUT(S) ≤ 2.65 V ±150 ppm/°C 1 2.65 V < VOUT(S) ≤ 3.3 V ±150 ppm/°C 1 0.8 V ≤ VOUT(S) ≤ 2.65 V 9 16 µA 2 2.65 V < VOUT(S) ≤ 3.3 V 9 16 µA 2 0.8 V ≤ VOUT(S) ≤ 2.65 V 0.1 0.9 µA 2 2.65 V < VOUT(S) ≤ 3.3 V 0.1 0.9 µA 2 0.8 V ≤ VOUT(S) < 1.5 V VIN = VOUT(S) + 1.0 V, IOUT = 30 mA 1.5 V ≤ VOUT(S) ≤ 2.65 V VIN = 3.65 V, IOUT = 30 mA VIN ≥ VOUT(S) + 1.0 V VIN = 3.65 V 2.65 V < VOUT(S) ≤ 3.3 V IOUT = 100 mA VOUT(S) + 0.5 V ≤ VIN ≤ 3.65 V, IOUT = 30 mA 3.4 V ≤ VIN ≤ 3.65 V, IOUT = 30 mA VIN = VOUT(S) + 1.0 V, 10 µA ≤ IOUT ≤ 100 mA VIN = 3.65 V, 10 µA ≤ IOUT ≤ 100 mA VIN = VOUT(S) + 1.0 V, IOUT = 30 mA, −40°C ≤ Ta ≤ +85°C VIN = 3.65 V, IOUT = 30 mA, −40°C ≤ Ta ≤ +85°C VIN = VOUT(S) + 1.0 V, ON / OFF pin = ON, no load VIN = 3.65 V, ON / OFF pin = ON, no load VIN = VOUT(S) + 1.0 V, ON / OFF pin = OFF, no load VIN = 3.65 V, ON / OFF pin = OFF, no load (Ta = 25°C unless otherwise specified) Test Min. Typ. Max. Unit Circuit Seiko Instruments Inc. 0.44 0.28 0.24 0.21 0.19 VOUT(S) + 0.015 VOUT(S) × 1.01 VOUT(S) × 1.01 0.48 0.42 0.36 0.32 0.29 VOUT(S) VOUT(S) VOUT(S) V 1 V 1 V 1 mA mA V V V V V 3 3 1 1 1 1 1 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Table 7 (2 / 2) Item Input voltage ON / OFF pin input voltage “H” ON / OFF pin input voltage “L” Symbol VIN VSH VSL ON / OFF pin input current “H” ISH ON / OFF pin input current “L” ISL Ripple rejection Short-circuit current “L” output Nch ON resistance RR Ishort RLOW Conditions VIN = VOUT(S) + 1.0 V, RL = 1.0 kΩ, determined by VOUT output level VIN = 3.65 V, RL = 1.0 kΩ, determined by VOUT output level VIN = VOUT(S) + 1.0 V, RL = 1.0 kΩ, determined by VOUT output level VIN = 3.65 V, RL = 1.0 kΩ, determined by VOUT output level VIN = 3.65 V, VON / OFF = 3.65 V 1.2 3.65 V 0.8 V ≤ VOUT(S) ≤ 2.65 V 0.9 V 4 2.65 V < VOUT(S) ≤ 3.3 V 0.9 V 4 0.8 V ≤ VOUT(S) ≤ 2.65 V 0.2 V 4 2.65 V < VOUT(S) ≤ 3.3 V 0.2 V 4 0.05 −0.1 0.55 0.1 µA µA 4 4 −0.1 0.1 µA 4 0.8 V ≤ VOUT(S) ≤ 1.25 V 60 dB 5 1.25 V < VOUT(S) ≤ 2.65 V 55 dB 5 2.65 V < VOUT(S) ≤ 3.3 V 55 dB 5 0.8 V ≤ VOUT(S) ≤ 2.65 V 150 mA 3 2.65 V < VOUT(S) ≤ 3.3 V 150 mA 3 100 Ω 3 B type D type VIN = 3.65 V, VON / OFF = 0 V VIN = VOUT(S) + 1.0 V, f = 1.0 kHz, ∆Vrip = 0.5 Vrms, IOUT = 30 mA VIN = 3.65 V, f = 1.0 kHz, ∆Vrip = 0.5 Vrms, IOUT = 30 mA VIN = VOUT(S) + 1.0 V, ON / OFF pin = ON, VOUT = 0 V VIN = 3.65 V, ON / OFF pin = ON, VOUT = 0 V (Ta = 25°C unless otherwise specified) Test Min. Typ. Max. Unit Circuit VOUT = 0.1 V, VIN = 3.65 V *1. VOUT(S): Specified output voltage VOUT(E): Actual output voltage Output voltage when fixing IOUT(= 30 mA) and inputting VOUT(S) +1.0 V or 3.65 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 or 3.65 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 ∆VOUT [mV/°C]*1 = VOUT(S)[V]*2 × ∆Ta•V [ppm/°C]*3 ÷ 1000 ∆Ta OUT *1. 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 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Test Circuits 1. + VOUT VIN ON / OFF V VSS A + Set to power ON Figure 6 2. + A VOUT VIN ON / OFF VSS Set to VIN or GND Figure 7 3. VOUT VIN ON / OFF VSS + A V + Set to VIN or GND Figure 8 4. VOUT VIN + A ON / OFF VSS V + RL Figure 9 5. VIN VOUT ON / OFF VSS V + Set to power ON Figure 10 10 Seiko Instruments Inc. RL SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Standard Circuit Input Output VOUT VIN CIN *1 ON / OFF VSS Single GND *1. *2. CL *2 GND CIN is a capacitor for stabilizing the input. Ceramic capacitor of 1.0 µF or more can be used as CL. 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. Condition of Application Input capacitor (CIN) : Output capacitor (CL) : 1.0 µF or more 1.0 µF or more (ceramic capacitor) Caution A general series regulator may oscillate, depending on the external components. Confirm that no oscillation occurs in the application for which the above capacitors are used. Selection of Input and Output Capacitors (CIN, CL) The S-11L10 Series requires an output capacitor between the VOUT and VSS pin for phase compensation. Operation is stabilized by a ceramic capacitor with an output capacitance of 1.0 µF or more over the entire temperature range. When using an OS capacitor, tantalum capacitor, or aluminum electrolytic capacitor, the capacitance must be 1.0 µF or more. The value of the output overshoot or undershoot transient response varies depending on the value of the output capacitor. The required capacitance of the input capacitor differs depending on the application. The recommended capacitance for an application is CIN ≥ 1.0 µF, CL ≥ 1.0 µF; however, when selecting the output capacitor, perform sufficient evaluation, including evaluation of temperature characteristics, on the actual device. Seiko Instruments Inc. 11 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Explanation of Terms 1. Low dropout voltage regulator This IC’s voltage regulator has the low dropout voltage due to its built-in low on-resistance transistor. 2. Output voltage (VOUT) The accuracy of the output voltage is ensured at ±1.0% or ±15 mV*1 under the specified conditions of fixed input voltage*2, fixed output current, and fixed temperature. *1. *2. Differs depending on the product. When VOUT < 1.5 V : ±15 mV, when 1.5 V ≤ VOUT : ±1.0% Caution 3. If the above conditions change, the output voltage value may vary and exceed the accuracy range of the output voltage. Refer to “ Electrical Characteristics” and “ Characteristics (Typical Data)” for details. ∆VOUT1 Line regulation ∆VIN•VOUT Indicates the dependency of the output voltage on the input voltage. That is, the values show 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 values show 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 input voltage VIN and the output voltage when; decreasing input voltage VIN gradually until the output voltage has dropped out to the value of 98% of output voltage VOUT3, which is at VIN = VOUT(S) + 1.0 V. Vdrop = VIN1 − (VOUT3 × 0.98) 12 Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series 6. ∆VOUT Temperature coefficient of output voltage ∆Ta•VOUT The shaded area in Figure 12 is the range where VOUT varies in the operating temperature range when the temperature coefficient of the output voltage is ±150 ppm/°C. Example of S-11L10B10 typ. products VOUT [V] +0.15 mV/°C *1 VOUT(E) −0.15 mV/°C −40 *1. 25 85 Ta [°C] VOUT(E) 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 ∆VOUT [mV/°C]*1 = VOUT(S)[V]*2 × ∆Ta•V [ppm/°C]*3 ÷ 1000 ∆Ta OUT *1. Change in temperature of output voltage *2. Specified output voltage *3. Output voltage temperature coefficient Seiko Instruments Inc. 13 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Operation 1. Basic operation Figure 13 shows the block diagram of S-11L10 Series. The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistance-divided by feedback resistors Rs and Rf. It supplies the gate voltage necessary to maintain the constant output voltage which is not influenced by the input voltage and temperature change, to the output transistor. VIN *1 Current supply Error amplifier Vref VOUT − Rf + Vfb Reference voltage circuit Rs VSS *1. Parasitic diode Figure 13 2. Output transistor In the S-11L10 Series, a low on-resistance P-channel MOS FET is used 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 the VOUT pin through a parasitic diode to the VIN pin. 14 Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series 3. ON / OFF pin This pin starts and stops the regulator. When the ON / OFF pin is set to the power-off level, the entire internal circuit stops operating, and the built-in Pchannel MOS FET output transistor between the VIN and VOUT pins is turned off, reducing current consumption significantly. Since the S-11L10 Series has a built-in discharge shunt circuit to discharge the output capacitance, the VOUT pin is forcibly set to the VSS level. The ON / OFF pin is configured as shown in Figure 14 and 15. (1) S-11L10 Series B type The ON / OFF pin is internally pulled down to VSS by constant current source, so the VOUT pin is set to the VSS level when it is in the floating state. For the ON / OFF pin current, refer to the B type of power-off pin input current “H” in “ Electrical Characteristics”. (2) S-11L10 Series D type Do not use the ON / OFF pin in the floating state because this pin is internally not pulled up or pulled down. When not using the ON / OFF pin, connect it to the VIN pin. Caution Under high temperature in the S-11L10 Series, this IC’s current consumption may increase if applying voltage of 0.2 V to 0.9 V to the ON / OFF pin. Table 8 Logic Type ON / OFF Pin Internal Circuits VOUT Pin Voltage Current Consumption B/D “L”: Power-off Stop VSS level ISS2 B/D “H”: Power-on Operate Set value ISS1 (1) S-11L10 Series B Type (2) S-11L10 Series D Type VIN ON / OFF VIN ON / OFF VSS VSS Figure 14 Figure 15 Seiko Instruments Inc. 15 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series 4. Discharge shunt function The S-11L10 Series has a built-in discharge shunt circuit to discharge the output capacitance. When the ON / OFF pin is set to power-off level, turns the output transistor off, and turns the discharge shunt function on so that the output capacitor discharges. The VOUT pin is set to the VSS level faster, compared to the product which does not have a discharge shunt circuit. S-11L10 Series Output transistor : OFF *1 VOUT VIN Discharge shunt function : ON *1 ON / OFF Power-off circuit Output capacitance (CL) ON / OFF Pin : Power-off Current flow GND VSS *1. Parasitic diode Figure 16 16 Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series 5. Overcurrent protection circuit The S-11L10 Series has an overcurrent protection circuit having the characteristics shown in “(1) Output Voltage vs. Output Current (When Load Current Increases) (Ta = 25°C)” in “ Characteristics (Typical Data)”, in order to protect the output transistor against an excessive output current and short circuiting between the VOUT and VSS pins. The current (Ishort) when the output pin is short-circuited is internally set at approx. 150 mA (typ.), and the normal value is restored for the output voltage, if releasing a short circuit once. Caution Using the overcurrent protection circuit is to protect the output transistor from accidental conditions such as short circuited load and the rapid and large current flow in the large capacitor. The overcurrent protection circuit is not suitable for use under the short circuit status or large current flowing (150 mA or more) that last long. 6. Constant current source pull-down (S-11L10 Series B type) In the S-11L10 Series B type, the ON / OFF pin is internally pulled down to VSS, so the VOUT pin is in the VSS level in the floating status. In the S-11L10 Series B type, note that the ON / OFF pin is connected to VIN and during operation, IC’s current consumption increases as much as the constant current flows. Seiko Instruments Inc. 17 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 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 pin (CL) and a capacitor for stabilizing the input between VIN and VSS pin (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 (100 µA or less). • Note that the output voltage may increase due to the leakage current from a driver when a series regulator is used at high temperature. • Under high temperature, this IC’s current consumption may increase if applying voltage of 0.2 V to 0.9 V to the ON / OFF pin. • This IC may oscillate if power supply’s inductance is high. Select an input capacitor after performing sufficient evaluation under the actual usage conditions including evaluation of temperature characteristics. • Generally a series regulator may cause oscillation, depending on the selection of external parts. The following conditions are recommended for this IC. However, be sure to perform sufficient evaluation under the actual usage conditions for selection, including evaluation of temperature characteristics. See “(5) Example of Equivalent Series Resistance vs. Output Current Characteristics (Ta = 25°C)” in “ Reference Data” for the equivalent series resistance (RESR) of the output capacitor. Input capacitor (CIN) : Output capacitor (CL) : 1.0 µF or more 1.0 µF or more • 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. • If the output capacitance is small, power supply’s fluctuation and the characteristics of load fluctuation become worse. Sufficiently evaluate the output voltage’s fluctuation with the actual device. • A momentary overshoot may be output when the power supply suddenly increases, and the output capacitance is small. It is therefore important to sufficiently evaluate the output voltage at power application in actual device. • 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 7 in “ 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. 18 Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Characteristics (Typical Data) (1) Output Voltage vs. Output Current (When Load Current Increases) (Ta = 25°C) VOUT = 0.8 V 1.2 VOUT = 1.5 V 2.0 1.5 0.8 VOUT [V] VOUT [V] 1.0 VIN = 1.3 V 1.8 V 3.65 V 0.6 0.4 VIN = 2.0 V 2.5 V 3.65 V 1.0 0.5 0.2 0 0 0 50 100 150 200 250 300 350 IOUT [mA] 0 50 100 150 200 250 300 350 IOUT [mA] VOUT = 3.3 V 4.0 VOUT [V] 3.0 Remark VIN = 3.65 V 2.0 1.0 0 0 50 In determining the output current, attention should be paid to the following. 1. The minimum output current value and footnote *5 in Table 7 in the “ Electrical Characteristics” 2. The package power dissipation 100 150 200 250 300 350 IOUT [mA] (2) Output Voltage vs. Input Voltage (Ta = 25°C) VOUT [V] VOUT = 1.5 V 1.6 IOUT = 1 mA 1.5 VOUT [V] VOUT = 0.8 V 1.0 IOUT = 1 mA 0.9 0.8 0.7 30 mA 0.6 100 mA 0.5 0.4 0.3 0 0.5 1.0 1.5 2.0 VIN [V] 1.4 30 mA 1.3 100 mA 1.2 1.1 1.0 2.5 3.0 3.5 1.0 1.5 2.0 2.5 VIN [V] 3.0 3.5 VOUT = 3.3 V 3.4 VOUT [V] 3.3 IOUT = 1 mA 3.2 30 mA 3.1 100 mA 3.0 2.9 2.8 2.8 3.0 3.2 VIN [V] 3.4 3.6 Seiko Instruments Inc. 19 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series (3) Dropout Voltage vs. Output Current VOUT = 0.8 V 0.5 VOUT = 1.5 V 0.30 0.25 Ta = 85°C 0.3 VDROP [V] VDROP [V] 0.4 25°C 0.2 −40°C 0.1 0.15 25 50 100 75 IOUT [mA] 125 150 VOUT = 3.3 V 0.20 VDROP [V] −40°C 0.05 0 0 0.15 Ta = 85°C 0.10 25°C −40°C 0.05 0 0 25 50 100 75 IOUT [mA] 125 150 (4) Dropout Voltage vs. Set Output Voltage VDROP [V] 25°C 0.10 0 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 IOUT = 150 mA 100 mA 50 mA 30 mA 10 mA 0 20 Ta = 85°C 0.20 0.5 1.0 1.5 2.0 VOUT [V] 2.5 3.0 3.5 Seiko Instruments Inc. 0 25 50 75 100 IOUT [mA] 125 150 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series (5) Output Voltage vs. Ambient Temperature 0.82 1.55 VOUT [V] VOUT = 1.5 V 1.60 VOUT [V] VOUT = 0.8 V 0.84 0.80 0.78 0.76 1.50 1.45 −40 −25 1.40 0 25 Ta [°C] 50 75 85 0 25 Ta [°C] 50 75 85 −40 −25 0 25 Ta [°C] 50 75 85 VOUT = 3.3 V 3.5 VOUT [V] 3.4 3.3 3.2 3.1 3.0 −40 −25 (6) Current Consumption vs. Input Voltage ISS1 [µA] 10 VOUT = 1.5 V 12 Ta = 85°C 10 8 6 −40°C 4 25°C ISS1 [µA] VOUT = 0.8 V 12 8 6 2 2 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 VIN [V] −40°C 4 0 0 Ta = 85°C 0 25°C 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 VIN [V] VOUT = 3.3 V 12 Ta = 85°C ISS1 [µA] 10 8 6 −40°C 4 25°C 2 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 VIN [V] Seiko Instruments Inc. 21 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series (7) Ripple Rejection (Ta = 25°C) VOUT = 0.8 V VOUT = 1.5 V 100 IOUT = 1 mA 80 30 mA 100 mA 60 40 20 0 10 100 VIN = 2.5 V, CL = 1.0 µF Ripple Rejection [dB] Ripple Rejection [dB] VIN = 1.8 V, CL = 1.0 µF 10k 100k 1k Frequency [Hz] 100 40 20 1M Ripple Rejection [dB] VIN = 3.5 V, CL = 1.0 µF 100 IOUT = 1 mA 30 mA 100 mA 60 40 20 0 10 22 100 10k 100k 1k Frequency [Hz] 30 mA 100 mA 60 VOUT = 2.5 V 80 IOUT = 1 mA 80 1M Seiko Instruments Inc. 0 10 100 10k 100k 1k Frequency [Hz] 1M SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Reference Data (1) Transient Response Characteristics when Input (Ta = 25°C) 1.5 1.0 3.0 3.0 2.0 2.5 1.0 VOUT 0 0.5 0 −100 −50 0 50 100 150 200 250 300 t [µs] VOUT [V] VIN VIN [V] VOUT [V] 2.5 2.0 VOUT = 1.5 V IOUT = 30 mA, tr = tf = 5.0 µs, CL = 1.0 µF, CIN = 1.0 µF 3.5 5.0 2.0 1.5 4.0 VIN 3.0 2.0 VOUT −1.0 1.0 −2.0 0.5 −100 −50 1.0 VIN [V] VOUT = 0.8 V IOUT = 30 mA, tr = tf = 5.0 µs, CL = 1.0 µF, CIN = 1.0 µF 3.0 4.0 0 0 50 100 150 200 250 300 t [µs] −1.0 VOUT = 2.0 V IOUT = 30 mA, tr = tf = 5.0 µs, CL = 1.0 µF, CIN = 1.0 µF 4.0 4.0 2.5 2.0 3.5 VIN 3.0 2.5 VOUT 2.0 1.5 1.0 −100 −50 VIN [V] VOUT [V] 3.5 3.0 1.5 0 50 100 150 200 250 300 t [µs] 1.0 IOUT [mA] VOUT = 1.5 V VIN = 2.5 V, CL = 1.0 µF, CIN = 1.0 µF, IOUT = 50 ↔ 100 mA 1.70 150 1.65 100 IOUT 1.60 50 VOUT 1.55 0 1.50 −50 1.45 −100 1.40 −150 1.35 −200 −100 −50 0 50 100 150 200 250 300 t [µs] VOUT [V] VOUT [V] VOUT = 0.8 V VIN = 1.8 V, CL = 1.0 µF, CIN = 1.0 µF, IOUT = 50 ↔ 100 mA 1.00 150 0.95 100 IOUT 0.90 50 0.85 0 VOUT 0.80 −50 0.75 −100 0.70 −150 0.65 −200 −100 −50 0 50 100 150 200 250 300 t [µs] IOUT [mA] (2) Transient Response Characteristics of Load (Ta = 25°C) IOUT [mA] VOUT [V] VOUT = 3.3 V VIN = 3.65 V, CL = 1.0 µF, CIN = 1.0 µF, IOUT = 50 ↔ 100 mA 3.45 150 100 3.40 IOUT 50 3.35 0 VOUT 3.30 −50 3.25 −100 3.20 −150 3.15 −200 −100 −50 0 50 100 150 200 250 300 t [µs] Seiko Instruments Inc. 23 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series (3) Transient Response Characteristics of ON / OFF Pin (Ta = 25°C) 3 2.0 −1 2.0 0 −2 0 −3 −1.0 0 50 100 t [µs] 150 200 VOUT = 3.3 V VIN = 3.65 V, CL = 1.0 µF, CIN = 1.0 µF, IOUT = 100 mA 10.0 −2 −4 −50 0 50 100 t [µs] 150 200 −6 3 VON /OFF 4.0 2.0 0 −3 VOUT 0 VON / OFF [V] 6 6.0 VOUT [V] 0 VOUT 9 8.0 −2.0 2 VON /OFF 1.0 −0.5 −50 4 3.0 VOUT [V] 0 VOUT VON / OFF [V] 1 1.0 0.5 6 4.0 2 VON /OFF 1.5 VOUT [V] VOUT = 1.5 V VIN = 2.5 V, CL = 1.0 µF, CIN = 1.0 µF, IOUT = 100 mA 5.0 VON / OFF [V] VOUT = 0.8 V VIN = 1.8 V, CL = 1.0 µF, CIN = 1.0 µF, IOUT = 100 mA 2.5 −6 −50 0 50 100 t [µs] 150 200 −9 (4) Output Capacitance vs. Characteristics of Discharge Time (Ta = 25°C) VIN = VOUT + 1.0 V (max.: 3.65 V), IOUT = no load VON / OFF = VOUT + 1.0 V → VSS, tf = 1 µs 1 µs VON / OFF 3.0 tDSC [ms] 2.5 VOUT(S) = 3.3 V 1.5 V 0.8 V 2.0 1.5 VSS tDSC 1.0 VOUT 0.5 0 0 2 4 6 CL [µF] 8 10 12 VOUT × 10% VIN = VOUT + 1.0 V VON / OFF = VOUT + 1.0 V → VSS Figure 14 24 Seiko Instruments Inc. Measurement Condition of Discharge Time SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series (5) Example of Equivalent Series Resistance vs. Output Current Characteristics (Ta = 25°C) CL : TDK Corporation C3216X8R1E105K (1.0 µF) CIN = CL = 1.0 µF 100 RESR [Ω] VIN CIN Stable ON / OFF 0 0.1 150 S-11L10 Series VOUT CL VSS RESR IOUT [mA] Seiko Instruments Inc. 25 SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series Marking Specifications (1) SOT-23-5 SOT-23-5 Top view 5 4 (1) to (3) (4) : Product code (Refer to Product name vs. Product code) : Lot number (1) (2) (3) (4) 1 2 3 Product name vs. Product code (a) S-11L10 Series B type (b) S-11L10 Series D type Product code Product code Product Name (1) (2) (3) (1) (2) (3) S-11L10B08-M5T1U T V A S-11L10D08-M5T1U T X A S-11L10B09-M5T1U T V B S-11L10D09-M5T1U T X B S-11L10B10-M5T1U T V C S-11L10D10-M5T1U T X C S-11L10B11-M5T1U T V D S-11L10D11-M5T1U T X D S-11L10B12-M5T1U T V E S-11L10D12-M5T1U T X E S-11L10B13-M5T1U T V F S-11L10D13-M5T1U T X F S-11L10B14-M5T1U T V G S-11L10D14-M5T1U T X G S-11L10B15-M5T1U T V H S-11L10D15-M5T1U T X H S-11L10B16-M5T1U T V I S-11L10D16-M5T1U T X I S-11L10B17-M5T1U T V J S-11L10D17-M5T1U T X J S-11L10B18-M5T1U T V K S-11L10D18-M5T1U T X K S-11L10B19-M5T1U T V L S-11L10D19-M5T1U T X L S-11L10B20-M5T1U T V M S-11L10D20-M5T1U T X M S-11L10B21-M5T1U T V N S-11L10D21-M5T1U T X N S-11L10B22-M5T1U T V O S-11L10D22-M5T1U T X O S-11L10B23-M5T1U T V P S-11L10D23-M5T1U T X P S-11L10B24-M5T1U T V Q S-11L10D24-M5T1U T X Q S-11L10B25-M5T1U T V R S-11L10D25-M5T1U T X R S-11L10B26-M5T1U T V S S-11L10D26-M5T1U T X S S-11L10B27-M5T1U T V T S-11L10D27-M5T1U T X T S-11L10B28-M5T1U T V U S-11L10D28-M5T1U T X U S-11L10B29-M5T1U T V V S-11L10D29-M5T1U T X V S-11L10B30-M5T1U T V W S-11L10D30-M5T1U T X W S-11L10B31-M5T1U T V X S-11L10D31-M5T1U T X X S-11L10B32-M5T1U T V Y S-11L10D32-M5T1U T X Y S-11L10B33-M5T1U T V Z S-11L10D33-M5T1U T X Z Remark Please contact our sales office for products with specifications other than the above. Product Name 26 Seiko Instruments Inc. SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.0_00 S-11L10 Series (2) SNT-6A(H) SNT-6A(H) Top view 1 (1) (2) (3) 3 (4) (5) (6) 2 6 (1) to (3) (4) tp (6) : Product code (Refer to Product name vs. Product code) : Lot number 5 4 Product name vs. Product code (a) S-11L10 Series B type (b) S-11L10 Series D type Product code Product code Product Name (1) (2) (3) (1) (2) (3) S-11L10B08-I6T2G T V A S-11L10D08-I6T2G T X A S-11L10B09-I6T2G T V B S-11L10D09-I6T2G T X B S-11L10B10-I6T2G T V C S-11L10D10-I6T2G T X C S-11L10B11-I6T2G T V D S-11L10D11-I6T2G T X D S-11L10B12-I6T2G T V E S-11L10D12-I6T2G T X E S-11L10B13-I6T2G T V F S-11L10D13-I6T2G T X F S-11L10B14-I6T2G T V G S-11L10D14-I6T2G T X G S-11L10B15-I6T2G T V H S-11L10D15-I6T2G T X H S-11L10B16-I6T2G T V I S-11L10D16-I6T2G T X I S-11L10B17-I6T2G T V J S-11L10D17-I6T2G T X J S-11L10B18-I6T2G T V K S-11L10D18-I6T2G T X K S-11L10B19-I6T2G T V L S-11L10D19-I6T2G T X L S-11L10B20-I6T2G T V M S-11L10D20-I6T2G T X M S-11L10B21-I6T2G T V N S-11L10D21-I6T2G T X N S-11L10B22-I6T2G T V O S-11L10D22-I6T2G T X O S-11L10B23-I6T2G T V P S-11L10D23-I6T2G T X P S-11L10B24-I6T2G T V Q S-11L10D24-I6T2G T X Q S-11L10B25-I6T2G T V R S-11L10D25-I6T2G T X R S-11L10B26-I6T2G T V S S-11L10D26-I6T2G T X S S-11L10B27-I6T2G T V T S-11L10D27-I6T2G T X T S-11L10B28-I6T2G T V U S-11L10D28-I6T2G T X U S-11L10B29-I6T2G T V V S-11L10D29-I6T2G T X V S-11L10B30-I6T2G T V W S-11L10D30-I6T2G T X W S-11L10B31-I6T2G T V X S-11L10D31-I6T2G T X X S-11L10B32-I6T2G T V Y S-11L10D32-I6T2G T X Y S-11L10B33-I6T2G T V Z S-11L10D33-I6T2G T X Z Remark Please contact our sales office for products with specifications other than the above. Product Name Seiko Instruments Inc. 27 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 1.57±0.03 6 5 1 2 4 +0.05 0.08 -0.02 3 0.5 0.48±0.02 0.2±0.05 No. PI006-A-P-SD-2.0 TITLE SNT-6A(H)-A-PKG Dimensions PI006-A-P-SD-2.0 No. SCALE UNIT mm Seiko Instruments Inc. +0.1 ø1.5 -0 4.0±0.1 2.0±0.05 0.25±0.05 +0.1 1.85±0.05 5° ø0.5 -0 4.0±0.1 0.65±0.05 3 2 1 4 5 6 Feed direction No. PI006-A-C-SD-1.0 TITLE SNT-6A(H)-A-Carrier Tape PI006-A-C-SD-1.0 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. PI006-A-R-SD-1.0 TITLE SNT-6A(H)-A-Reel No. PI006-A-R-SD-1.0 SCALE UNIT QTY. mm Seiko Instruments Inc. 5,000 0.52 1.36 0.52 0.3 Caution 0.2 0.3 0.2 0.3 Making the wire pattern under the package is possible. However, note that the package may be upraised due to the thickness made by the silk screen printing and of a solder resist on the pattern because this package does not have the standoff. No. PI006-A-L-SD-3.0 TITLE SNT-6A(H)-A-Land Recommendation PI006-A-L-SD-3.0 No. SCALE UNIT mm Seiko Instruments Inc. • • • • • • 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.