S-1170B Seiko Instruments, S-1170B Datasheet
S-1170B
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S-1170B Summary of contents
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... Low current consumption: • High peak current capability: • Built-in ON/OFF circuit: • Low ESR capacitor can be used: A ceramic capacitor of 4.7 µF or more can be used for the output • High ripple rejection: • Built-in overcurrent protector: • Built-in thermal shutdown circuit: Damage caused by heat can be prevented. ...
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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 4 DataSheet U .com Overcurrent protector Thermal shutdown circuit + ON/OFF circuit − Reference voltage circuit Figure 1 Seiko Instruments Inc. Rev.3.0 _00 *1 VOUT ...
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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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... S-1170B55UC-OUOTFG Seiko Instruments Inc. Rev.3.0 _00 6-Pin HSON(A) S-1170B15PD-OTATFG S-1170B16PD-OTBTFG S-1170B17PD-OTCTFG S-1170B18PD-OTDTFG S-1170B19PD-OTETFG S-1170B20PD-OTFTFG S-1170B21PD-OTGTFG S-1170B22PD-OTHTFG S-1170B23PD-OTITFG S-1170B24PD-OTJTFG S-1170B25PD-OTKTFG S-1170B26PD-OTLTFG S-1170B27PD-OTMTFG S-1170B28PD-OTNTFG S-1170B29PD-OTOTFG S-1170B30PD-OTPTFG S-1170B31PD-OTQTFG S-1170B32PD-OTRTFG S-1170B33PD-OTSTFG S-1170B34PD-OTTTFG S-1170B35PD-OTUTFG S-1170B36PD-OTVTFG S-1170B37PD-OTWTFG S-1170B38PD-OTXTFG S-1170B39PD-OTYTFG S-1170B40PD-OTZTFG S-1170B41PD-OUATFG S-1170B42PD-OUBTFG S-1170B43PD-OUCTFG S-1170B44PD-OUDTFG S-1170B45PD-OUETFG S-1170B46PD-OUFTFG S-1170B47PD-OUGTFG ...
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... VSS. Figure 3 4 DataSheet U .com Pin No. Symbol 1 ON/OFF VOUT *1. The NC pin is electrically open. The NC pin can be connected to VIN and VSS. Pin No. Symbol 1 VOUT 2 VOUT 3 ON/OFF *1. Short pins 1 and 2. *2. Short pins 5 and 6. electric Seiko Instruments Inc. ...
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... Board size : (2) Cu wiring shear : 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. Figure 4 Power Dissipation of Package (Mounted on Printed Circuit Board) Caution Thermal shutdown circuit may operate when junction temperature is 150 °C. ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0 _00 Electrical Characteristics Parameter *1 Output voltage *2 Output current *3 Dropout voltage Line regulation Load regulation Output voltage *4 temperature coefficient Current consumption during operation Current consumption during shutdown Input voltage Shutdown pin input voltage “ ...
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... 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. ...
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... HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR Rev.3.0 _00 Test Circuits DataSheet U .com + A VIN VOUT + V ON/OFF VSS Set to power ON Figure 5 A VIN VOUT ON/OFF VSS Set GND IN Figure 6 + VIN VOUT ON/OFF VSS ...
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... 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 µF or more and an ESR of 0.5 Ω or less is required. The output overshoot and undershoot values, which are transient response characteristics, vary depending on the output capacitor value ...
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... 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. 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 ...
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... Specified output voltage *3. Output voltage temperature coefficient 12 4 DataSheet U .com ∆ V OUT output voltage ∆ • OUT Ex. S-1170B28 Typ. V OUT [ OUT(E) − the value of the output voltage measured at 25°C. OUT(E) Figure 11 ∆ ...
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... Figure 12 shows the block diagram of the S-1170 Series. The error amplifier compares the reference voltage (V divided by feedback resistors R to ensure a certain output voltage free of any fluctuations of input voltage and temperature. 2. Output transistor The S-1170 Series uses a low on-resistance P-channel MOS FET as the output transistor. ...
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... In addition, note that the current consumption increases if a voltage of 0 used, connect it to the VSS pin if the logic type is “A” and to the VIN pin “B”. Logic Type ON/OFF Pin A “ ...
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... When the junction temperature drops to 120°C (typ.), the thermal shutdown circuit is released and the regulator operation resumes. If the thermal shutdown circuit starts operating due to self-heating, the regulator operation stops and the output voltage falls. temperature of the IC is lowered. When the temperature has dropped, the thermal shutdown circuit is released, the regulator operation resumes, and self-heat is generated again ...
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... When mounting an output capacitor between the VOUT and VSS pins (C the input between VIN and VSS pins (C short as possible. • Note that the output voltage may increase when a series regulator is used at low load current (1 less). • Generally a series regulator may cause oscillation, depending on the selection of external parts. The following conditions are recommended for this IC ...
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... OUT 10 mA 1.2 100 mA 1.1 300 mA 1.0 1.0 1.5 2.0 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 4 DataSheet U .com S-1170B30 (Ta = 25°C) = 2.0 V 2.5 V 800 1000 1200 600 [mA] OUT = 5 Remark In determining the output current, attention 6.0 V 6.5 V 1000 1200 600 800 [mA] OUT S-1170B30 (Ta = 25°C) 2.5 3.0 3.5 V [V] IN 6.5 7.0 6.0 ...
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... I (4) Dropout voltage vs. Set output voltage 0.8 800 mA 0.7 0.6 600 mA 0.5 0.4 0.3 300 mA 0.2 0 DataSheet U .com S-1170B30 25°C 85°C −40°C 400 500 600 700 800 900 [mA] OUT 25°C 85°C −40°C 400 500 600 700 800 900 [mA] OUT 3 5 ...
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... S-1170B50 (Ta = 25° DataSheet U .com S-1170B30 ( ° ° C] S-1170B30 (Ta = 25° [ [V] IN Seiko Instruments Inc. S-1170 Series = 10 mA) OUT 3.20 3.15 3.10 3.05 3.00 2.95 2.90 2.85 2.80 − ...
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... Frequency [Hz] S-1170B50 (Ta = 25° 6 4.7 µ OUT 100 80 60 100 100 Frequency [Hz DataSheet U .com S-1170B30 (Ta = 25° OUT 10k 100k OUT 10k 100k 1M Seiko Instruments Inc. Rev.3.0 = 4.7 µ F OUT 100 = 50 mA ...
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... 4.7 µ F OUT IN 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1 µ s] S-1170B30 (Ta = 25°C) = 4.7 µ ↔ 100 mA V OUT IN 150 100 50 0 −50 −100 −150 60 80 100 120 140 160 t [ µ 4.7 µ ↔ 100 mA OUT 150 100 50 0 − ...
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... S-1170B50 (Ta = 25° 4.7 µ OUT ON/OFF OUT 1 −1 − DataSheet U .com S-1170B30 (Ta = 25°C) = 4.7 µ 100 mA V OUT −1 −2 − µ 4.7 µ 100 mA OUT ...
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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 ...