S-1721 Seiko Instruments, S-1721 Datasheet
S-1721
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S-1721 Summary of contents
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... Packages Package Name SNT-6A SOT-23-6 S-1721 Series, developed using the CMOS technology 2-channel positive voltage regulator IC which has the low dropout voltage, the high-accuracy output voltage and the low output current consumption of 150mA. Users are able to use a small ceramic capacitor of 1.0 µF for this IC ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series Block Diagrams 1. S-1721 Series A type ON/OFF1 www.DataSheet4U.com VIN ON/OFF2 *1. Parasitic diode 2. S-1721 Series B type ON/OFF1 VIN ON/OFF2 *1. Parasitic diode 2 *1 VOUT1 Overcurrent protector ON/OFF + − circuit ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.1 _00 3. S-1721 Series C type ON/OFF1 www.DataSheet4U.com VIN ON/OFF2 *1. Parasitic diode 4. S-1721 Series D type ON/OFF1 VIN ON/OFF2 *1. Parasitic diode *1 VOUT1 Overcurrent protector ON/OFF + − circuit Reference voltage circuit ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series 5. S-1721 Series E type ON/OFF1 www.DataSheet4U.com VIN ON/OFF2 *1. Parasitic diode 6. S-1721 Series F type ON/OFF1 VIN ON/OFF2 *1. Parasitic diode 4 *1 VOUT1 Overcurrent protector ON/OFF + − circuit Reference voltage circuit ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.1.1 _00 7. S-1721 Series G type ON/OFF1 www.DataSheet4U.com VIN ON/OFF2 *1. Parasitic diode 8. S-1721 Series H type ON/OFF1 VIN ON/OFF2 *1. Parasitic diode *1 VOUT1 Overcurrent protector ON/OFF + − circuit Reference voltage circuit ...
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... S-1721 Series Product Name Structure Users can select the product type, output voltage, and package type for the S-1721 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 ...
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... None 2ch Active “H” 2ch None 1ch Active “L” 1ch None 2ch Active “L” 2ch None Seiko Instruments Inc. S-1721 Series Pull-down Resistor 1ch Available 2ch Available 1ch Available 2ch None 1ch None 2ch Available 1ch None ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series 3. Product name list 3.1 S-1721 series A type ON/OFF logic : Pull-up resistor : Pull-down resistor : Voltage Regulator 1 www.DataSheet4U.com Output Voltage 1.2 V ±15 mV 1.2 V ±15 mV 2.0 V ±1% 2.8 V ±1% 3.2 S-1721 series E type ...
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... Output voltage pin 1 6 VOUT2 Output voltage pin 2 Table 5 Pin No. Symbol 1 ON/OFF1 ON/OFF pin 1 2 VIN Input voltage pin 3 ON/OFF2 ON/OFF pin 2 4 VOUT2 Output voltage pin 2 5 VSS GND pin 6 VOUT1 Output voltage pin 1 Seiko Instruments Inc. S-1721 Series Description Description 9 ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series Absolute Maximum Ratings Item Input voltage Output voltage Power dissipation Operating ambient temperature www.DataSheet4U.com Storage temperature *1. When mounted on board [Mounted board] (1) Board size : (2) Board name : JEDEC STANDARD51-7 ...
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... IN OUT( 1.0 kHz, 1.8 V ≤ V ∆ 0.5 Vrms, rip 3.1 V ≤ OUT + 1.0 V, ON/OFF pin = ON OUT(S) Seiko Instruments Inc. S-1721 Series (Ta = 25°C unless otherwise specified) Min. Typ. Max OUT(S) OUT(S) < 1 OUT(S) OUT(S) − 0.015 + 0.015 V V OUT(S) OUT(S) ≤ ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series * Specified output voltage OUT( Actual output voltage at the fixed load OUT(E) Output voltage when fixing I *2. The output current at which the output voltage becomes 95 − ...
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... ON/OFF1 VSS *1 Figure 12 VIN VOUT2 VOUT1 ON/OFF2 ON/OFF1 VSS *1 Figure 13 VIN + VOUT2 VOUT1 + ON/OFF2 ON/OFF1 V VSS *1 Figure 14 VIN VOUT2 VOUT1 ON/OFF2 ON/OFF1 VSS *1 Figure 15 VIN A VOUT2 VOUT1 + ON/OFF2 ON/OFF1 V VSS *1 Figure 16 Seiko Instruments Inc. S-1721 Series * ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series 6. *1. Set to power-off www.DataSheet4U.com *1. Set to power-off 8. *1. Set to power-off *2. Set to power- *1. Set to power-on *2. Set to power-off 14 VIN VOUT2 VOUT1 ON/OFF2 ON/OFF1 VSS *1 Figure 17 ...
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... Selection of Input and Output Capacitors (C The S-1721 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. ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 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 (V OUT The accuracy of the output voltage is ensured at ±1.0% under the specified conditions of fixed input voltage output current, and fixed temperature ...
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... OUT(E) Figure 22 ∆ OUT × ppm/ ° C OUT(S) • ∆Ta V OUT Seiko Instruments Inc. S-1721 Series varies in the operating temperature range when the = 3.0 V Typ. products +0.36 mV/°C −0.36 mV/°C Ta [° ÷ 1000 17 ...
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... VIN www.DataSheet4U.com Current supply VSS *1. Parasitic diode 2. Output transistor In the S-1721 Series, a low on-resistance P-channel MOS FET is used as the output transistor. Be sure that V does not exceed V OUT current flowing from the VOUT pin through a parasitic diode to the VIN pin with V ref and R ...
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... When not using the ON/OFF pin in the S-1721 Series and H types, connect the ON/OFF pin to the VIN pin in the E, F (1ch only), and G (2ch only) types. In the F (2ch only), G (1ch only) and H types, connect the ON/OFF pin to the VSS pin ...
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... Pull-down/pull-up resistor (S-1721 Series and D types) In the S-1721 Series and D types, the ON/OFF pin is internally pulled up to VIN or pulled down to VSS, so the VOUT pin is in the VSS level when in the floating status. In A/B (1ch only) and C (2ch only), the ON/OFF pin is connected to VIN (2ch only)/C (1ch only)/D type, the ON/OFF pin is connected to VSS ...
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... SII claims no responsibility for any disputes arising out connection with any infringement by products including this IC of patents owned by a third party the output capacitor. ESR ) : 1.0 µF or more 1.0 µF or more L1 L2 Seiko Instruments Inc. S-1721 Series ) and a capacitor for stabilizing the input between VIN Reference Data (Per Circuit)” for the 21 ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series Characteristics (Typical Data) (Per Circuit) (1) Output Voltage vs. Output Current (When Load Current Increases) (Ta = 25° 1.2 V OUT 1.6 1.4 1 0.8 1.7 V 0.6 2.2 V 3.2 V 0.4 www.DataSheet4U.com 6 100 V = 5.0 V OUT ...
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... Dropout Voltage vs. Set Output Voltage 0.40 150 mA 0.35 0.30 100 mA 0.25 0. OUT 85°C 100 150 200 I [mA] OUT 85°C 100 150 200 I [mA] OUT [V] OTA Seiko Instruments Inc. S-1721 Series = 3.0 V 0.30 0.25 0.20 85°C 25°C 0.15 −40°C 0.10 0. 100 150 I [mA] OUT 200 23 ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series (5) Output Voltage vs. Ambient Temperature V = 1.2 V OUT 1.30 1.25 1.20 1.15 www.DataSheet4U.com 1.10 −40 − 5.0 V OUT 5.3 5.2 5.1 5.0 4.9 4.8 4.7 −40 −25 (6) Current Consumption vs. Input Voltage V = 1.2 V OUT 85° 5.0 V ...
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... IN OUT OUT OUT I = 100 mA OUT 1K 10K 100K 1M Frequency [Hz] = 1.0 µ 6 OUT 1K 10K 100K 1M Frequency [Hz] Seiko Instruments Inc. S-1721 Series = 3 4 OUT 120 100 OUT OUT 100 mA OUT 100 1K 10K 100K Frequency [Hz] = 1.0 µ ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series Reference Data (Per Circuit) (1) Transient Response Characteristics when Input (Ta = 25°C) Common to VR1 and VR2 V = 1.2 V OUT mA 5.0 µs, C OUT 1.30 1.28 1.26 V 1.24 IN 1.22 V 1.20 OUT 1.18 www.DataSheet4U.com 1.16 1.14 −100 −50 ...
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... C = 1.0 µ 100 mA IN OUT 8.0 6.0 4.0 2.0 0 −2.0 −4.0 −6.0 −8.0 −10.0 −12.0 100 150 200 t [µs] Seiko Instruments Inc. S-1721 Series = 5 1.0 µ 1.0 µ 6 OUT IN OUT 5.50 5.40 5.30 5.20 I OUT 5.10 5.00 V 4.90 OUT 4.80 4.70 4.60 −100 − 100 150 200 250 t [µ ...
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... SUPER-SMALL PACKAGE 2-CIRCUIT HIGH RIPPLE-REJECTION LOW CURRENT CONSUMPTION LOW DROPOUT CMOS VOLTAGE REGULATOR S-1721 Series (4) Transient Response Characteristics of Load’s Mutual Interference (Ta = 25° 1.2 V OUT1 OUT2 1.0 µ ↔ 100 mA, I OUT1 OUT2 I OUT1 1.30 1.26 V OUT2 1.22 www.DataSheet4U.com 1 ...
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... Marking Specifications (1) SNT-6A SNT-6A Top view www.DataSheet4U.com Product name vs. Product code (a) S-1721 Series A type Product Name S-1721A1212-I6T1G S-1721A1215-I6T1G S-1721A2020-I6T1G S-1721A2828-I6T1G Remark Please contact our sales office for products with specifications other than the above. (b) S-1721 Series E type Product Name ...
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... Product Name S-1721A1212-M6T1G S-1721A1215-M6T1G S-1721A2020-M6T1G S-1721A2828-M6T1G Remark Please contact our sales office for products with specifications other than the above. (b) S-1721 Series E type Product Name S-1721E1828-M6T1G S-1721E2818-M6T1G S-1721E2833-M6T1G S-1721E2J25-M6T1G Remark Please contact our sales offices for products with specifications other than the above. ...
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... 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 ...