S-1172 Seiko Instruments, S-1172 Datasheet
S-1172
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S-1172 Summary of contents
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... The S-1172 Series provides the very small dropout voltage and the large output current due to the built-in transistor with low on-resistance. The overcurrent protector prevents the load current from exceeding the capacitance of output transistor ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series ■ Block Diagram www.datasheet4u.com VIN ON/OFF VSS *1. Parasitic diode 2 Overcurrent protection circuit Thermal shutdown circuit + ON/OFF circuit − Reference voltage circuit Figure 1 Seiko Instruments Inc. Rev.1.1 *1 VOUT _00 ...
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... Rev.1.1 _00 Product Name Structure Users can select the product type, output voltage, and package type for the S-1172 Series. Refer to “1. Product www.datasheet4u.com Name” regarding the contents of product name, “2. Product Name List” regarding details of product name. 1. Product Name ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series 2. Product Name List www.datasheet4u.com Output Voltage 1.0 V ±15 mV 1.1 V ±15 mV 1.2 V ±15 mV 1.3 V ±15 mV 1.4 V ±15 mV 1.5 V ±1.0% 1.6 V ±1.0% 1.7 V ±1.0% 1.8 V ±1.0% 1.85 V ±1.0% 1.9 V ±1.0% 2.0 V ±1.0% 2.1 V ±1.0% 2.2 V ±1.0% 2.3 V ±1.0% 2.4 V ±1.0% 2.5 V ±1.0% 2.6 V ±1.0% 2.7 V ± ...
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... ON/OFF * VSS 6 VIN *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. Seiko Instruments Inc. S-1172 Series Description Shutdown pin GND pin No connection Input voltage pin Output voltage pin Description Output voltage pin GND pin Shutdown pin No connection ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series Absolute Maximum Ratings Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical www.datasheet4u.com damage. These values must therefore not be exceeded under any conditions. ...
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... When mounted on board (wind speed : 0 m/s) Refer to the recommended land pattern (drawing code : FH006-A) 2400 2000 1600 1200 800 400 0 100 50 0 Ambient temperature (Ta) [°C] Table 6 Power Dissipation (Reference) 2000 mW Seiko Instruments Inc. S-1172 Series 150 Thermal Resistance Value (θj−a) 50°C/W 7 ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series Electrical Characteristics www.datasheet4u.com Parameter Symbol *1 V Output voltage OUT( Output current OUT *3 V Dropout voltage drop ∆ V OUT Line regulation ∆ • ∆V Load regulation OUT2 Output voltage ∆ ...
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... V or 5.5 V, and I IN OUT(S) ∆ OUT * × ° *3 ÷ ppm/ C 1000 • ∆Ta V OUT Seiko Instruments Inc. S-1172 Series (Ta = 25°C unless otherwise specified) Min. Typ. Max. ≤ 4.5 V − − 1.0 ≤ 5.0 V − − 1.0 ≤ 4.5 V − − 0.3 ≤ 5.0 V − − 0.3 −0.1 − ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series Test Circuit 1. www.datasheet4u.com + Set to power Set to power ON 10 VOUT VIN ON/OFF V VSS Set to power ON Figure 6 VOUT VIN ON/OFF VSS Set GND IN Figure 7 + VOUT A VIN ON/OFF ...
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... Selection of Input and Output Capacitors (C The S-1172 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 4.7 µF or more over the entire temperature range. ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series Explanation of Terms 1. Low dropout voltage regulator This IC’s voltage regulator has the low dropout voltage due to its built-in transistor with low on-resistance. www.datasheet4u.com 2. Output voltage (V OUT The accuracy of the output voltage is ensured at ±1.0% or ±15 mV ...
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... Ta *1. Change in temperature of output voltage *2. Specified output voltage *3. Output voltage temperature coefficient ∆ V ∆ • Ta OUT Ex. S-1172B30 Typ. V [V] OUT *1 V OUT(E) − the value of the output voltage measured at 25°C. OUT(E) Figure 12 ∆ V OUT ...
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... Reference voltage VSS *1. Parasitic diode 2. Output transistor In the S-1172 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 which flows, because of a parasitic diode between the VIN and VOUT pin, when the potential of V ...
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... Figure 14 4. Overcurrent protection circuit The S-1172 Series has an overcurrent protection circuit having the characteristics shown in (1) Output Voltage vs. Output Current (When load current is increased) ( ° “ protect the output transistor against an excessive output current and short circuiting between the VOUT and VSS pin ...
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... Junction temperature 6. Rush current control circuit The S-1172 Series has a rush current control circuit to control the rush current generated during power-on or when the ON/OFF pin is ON. This circuit limits the rush current (500 mA, Typ.) immediately after power-on or from the ON/OFF pin is ON until the specified time (100 µs min.) which is set internally. ...
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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. ) and a capacitor for stabilizing the input between the VIN L 4.7 µF or more 4.7 µF or more Seiko Instruments Inc. S-1172 Series ) for the output ESR 17 ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series Characteristics (Typical Data) (1) Output Voltage vs. Output Current (when load current is increased) ( ° C) S-1172B10 www.datasheet4u.com 1.2 1 0.6 0.4 0 400 800 S-1172B50 400 800 I (2) Output Voltage vs. Input Voltage (Ta = 25°C) S-1172B10 1 ...
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... OUT C ° ° ° 600 800 1000 1200 [mA] OUT = 1000 mA 500 mA 300 [V] OTA Seiko Instruments Inc. S-1172 Series 0. ° 0. ° 0. ° 0.25 0.20 0.15 0.10 0.05 0 200 600 0 400 800 1000 I [mA] OUT 1200 19 ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series (5) Output Voltage vs. Ambient Temperature S-1172B10 1.100 www.datasheet4u.com 1.075 1.050 1.025 1.000 0.975 0.950 0.925 0.900 −40 −25 0 S-1172B50 5.30 5.20 5.10 5.00 4.90 4.80 4.70 −40 −25 0 (6) Current Consumption vs. Input Voltage S-1172B10 120 100 80 60 ...
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... S-1172B30 = 4.7 µ OUT OUT 30 mA 100 mA 10K 100K 1M = 4.7 µ OUT OUT 30 mA 100 mA 10K 100K 1M Seiko Instruments Inc. S-1172 Series OUT 100 OUT 100 100 1K 10K 100K Frequency [Hz] = 4.7 µ ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series Reference Data (1) Characteristics of Input Transient Response (Ta = 25°C) S-1172B10 100 mA 5.0 µ OUT 1. 1.10 1.05 V OUT 1.00 0.95 −200 0 200 400 t [µs] S-1172B50 = 100 mA 5.0 µ OUT 5. ...
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... I = 100 mA OUT −3 −6 −9 1000 1500 2000 Seiko Instruments Inc. S-1172 Series = 4.7 µ 4.7 µ 100 ↔ 500 mA OUT IN OUT I OUT V OUT −200 0 200 400 600 800 1000 1200 t [µs] = 4.7 µ 4.7 µ ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series (4) Characteristics of Rush Current ( ° C) S-1172B10 = 4.7 µ 2 www.datasheet4u.com IN OUT ON/OFF OUT −2 I OUT −4 −6 − [µs] S-1172B30 = 4.7 µ 4 OUT ...
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... O N S-1172B44-U5T1G S-1172B45-U5T1G S-1172B46-U5T1G S-1172B47-U5T1G S-1172B48-U5T1G S-1172B49-U5T1G S-1172B50-U5T1G Seiko Instruments Inc. S-1172 Series Product Code Product Name (1) ( ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1172 Series (2) HSOP-6 HSOP-6 Top view www.datasheet4u.com （1） （2） （3） （4） （5） （6） （7） （8） （9） （10） （11） （12） ...
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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 ...