S-1170 SII [Seiko Instruments Inc], S-1170 Datasheet
S-1170
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S-1170 Summary of contents
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... Power supply for note PCs Packages Package Name SOT-89-5 6-Pin HSON(A) The S-1170 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 ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Block Diagram VIN ON/OFF VSS *1. Parasitic diode 2 Overcurrent protector Thermal shutdown circuit + ON/OFF circuit − Reference voltage circuit Figure 1 Seiko Instruments Inc. Rev.3.0 *1 VOUT _02 ...
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... Product Name Structure • The product types, output voltage, and package types for the S-1170 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. ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series 2. Product name list Output Voltage 1.5 V ±1.0% 1.6 V ±1.0% 1.7 V ±1.0% 1.8 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 ±1.0% 2.8 V ±1.0% 2.9 V ±1.0% 3.0 V ±1.0% 3.1 V ±1.0% 3.2 V ±1.0% 3.3 V ±1.0% 3.4 V ±1.0% 3.5 V ±1.0% 3.6 V ±1.0% 3.7 V ±1.0% 3.8 V ±1.0% 3.9 V ± ...
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... VSS *2 5 VIN *2 6 VIN *1. Short pins 1 and 2. *2. Short pins 5 and 6. Seiko Instruments Inc. S-1170 Series Description Shutdown pin GND pin No connection Input voltage pin Output voltage pin Description Output voltage pin Output voltage pin Shutdown pin GND pin Input voltage pin ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series Absolute Maximum Ratings Parameter Input voltage Output voltage Power SOT-89-5 dissipation 6-Pin HSON(A) Operating ambient temperature Storage temperature *1. At mounted on printed circuit board [Mounted board] (1) Board size : (2) Cu wiring shear : Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage ...
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... Vrms, rip 3.1 V ≤ V OUT(S) = 100 mA I OUT 1.0 V, ON/OFF pin = ON, IN OUT( OUT Junction temperature Junction temperature Seiko Instruments Inc. S-1170 Series (Ta = 25°C unless otherwise specified) Min. Typ. Max OUT(S) OUT(S) OUT(S) × 0.99 × 1.01 *5 800 ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series * Specified output voltage OUT( Actual output voltage at the fixed load OUT(E) The output voltage when fixing I *2. The output current at which the output voltage becomes 95 − (V × ...
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... VOUT VIN + V ON/OFF VSS Figure VIN VOUT ON/OFF VSS Set GND IN Figure 6 + VIN VOUT A ON/OFF VSS Figure 7 VOUT VIN + ON/OFF V VSS Figure 8 VIN VOUT + ON/OFF V VSS Set to Power ON Figure 9 Seiko Instruments Inc S-1170 Series 9 ...
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... Check that no oscillation occurs with the application using the above capacitor. Selection of Input and Output Capacitors (C The S-1170 Series requires an output capacitor between the VOUT and VSS pins for phase compensation. A ceramic capacitor with a capacitance of 4.7 µF or more provides a stable operation in all temperature ranges. When using an OS capacitor, tantalum capacitor, or aluminum electrolytic capacitor, a ceramic capacitor with a capacitance of 4.7 µ ...
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... The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in low on-resistance transistor. 2. Low ESR A capacitor whose ESR (Equivalent Series Resistance) is low. The S-1170 Series enables use of a low ESR capacitor, such as a ceramic capacitor, for the output-side capacitor C 0.5 Ω or less can be used. ...
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... Specified output voltage *3. Output voltage temperature coefficient 12 ∆ V OUT of output voltage ∆ • OUT Ex. S-1170B28 Typ. V OUT [V] *1 OUT(E) − the value of the output voltage measured at 25°C. OUT(E) Figure 11 ∆ V OUT [ ] [ ] 2 * × ° ...
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... R to ensure a certain output voltage free of any fluctuations of input voltage and temperature. *1. 2. Output transistor The S-1170 Series uses a low on-resistance P-channel MOS FET as the output transistor. Be sure that V does not exceed V OUT to inverse current flowing from VOUT pin through a parasitic diode to VIN pin. ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 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 built- in 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 V resistance of several hundreds kΩ ...
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... T hermal shutdown circuit The S-1170 Series implements a thermal shutdown circuit to protect the device from damage due to overheating. When the junction temperature rises to 150°C (typ.), the thermal shutdown circuit operates and the regulator operation stops. When the junction temperature drops to 120°C (typ.), the thermal shutdown circuit is released and the regulator operation resumes ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 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 (C the input between VIN and VSS pins (C short as possible. • ...
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... V [V] IN S-1170B50 (Ta = 25°C) 5.1 5.0 4 4.8 OUT 10 mA 4.7 100 mA 4.6 300 mA 4.5 4.5 5.0 5.5 6.0 V [V] IN S-1170B30 (Ta = 25°C) 2.5 V 800 1000 1200 Remark In determining the output current, attention 1000 1200 800 S-1170B30 (Ta = 25°C) 3.0 3.5 6.5 7.0 Seiko Instruments Inc. S-1170 Series 3.5 3.0 2 2.0 4.0 V 1.5 6.5 V 1.0 0 200 400 ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR S-1170 Series (3) Dropout voltage vs. Output current S-1170B15 0.9 0.8 0.7 85°C 0.6 0.5 0.4 0.3 0.2 0 100 200 300 400 I [mA] OUT S-1170B50 0.6 0.5 0.4 85°C 0.3 0.2 0 100 200 300 400 500 I [mA] OUT (4) Dropout voltage vs. Set output voltage 0.8 800 mA ...
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... S-1170B50 (Ta = 25° [V] IN S-1170B30 (I 3.20 3.15 3.10 3.05 3.00 2.95 2.90 2.85 2. − S-1170B30 (Ta = 25° Seiko Instruments Inc. S-1170 Series = 10 mA) OUT − ° [V] ...
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... Frequency [Hz] S-1170B50 (Ta = 25° 4.7 µ OUT 100 I 80 OUT 60 100 100 Frequency [Hz] 20 S-1170B30 (Ta = 25° 4 10k 100k 10k 100k 1M Seiko Instruments Inc. = 4.7 µ F OUT 100 = OUT 80 60 100 ...
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... F IN 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1 S-1170B30 (Ta = 25° ↔ 100 OUT IN 150 100 50 0 −50 −100 −150 100 120 140 160 = 50 ↔ 100 mA OUT 150 100 50 0 −50 −100 −150 100 120 140 160 Seiko Instruments Inc. S-1170 Series = 4.7 µ ...
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... S-1170B50 (Ta = 25° 4.7 µ 4.7 µ OUT ON/OFF OUT 1 −1 − µ S-1170B30 (Ta = 25°C) = 100 4 OUT −1 −2 − 100 mA OUT −3 −6 50 ...
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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 ...