s-l2985 Seiko Instruments Inc., s-l2985 Datasheet
s-l2985
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s-l2985 Summary of contents
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... Power supply for home electric/electronic appliances • Power supply for cellular phones Package Package name WLP-4B The S-L2985 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 ...
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... HIGH RIPPLE-REJECTION WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2985 Series Block Diagram VIN ON/OFF VSS *1. Parasitic diode 2 *1 Overcurrent protector + ON/OFF − circuit Reference voltage circuit Figure 1 Seiko Instruments Inc. Rev.2.1 _00 VOUT ...
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... Product Code Structure • The product types, output voltage and package name for the S-L2985 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 WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2985 Series Pin Configuration WLP-4B Top view Figure 2 4 Table 2 Pin No. Symbol Description 1 VSS GND pin 2 VOUT Output voltage pin 3 VIN Input voltage pin 4 ON/OFF Shutdown pin Seiko Instruments Inc. ...
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... V V ON/OFF SS − 0 OUT SS P 350 D −40 to +85 T opr −40 to +125 T stg 600 500 400 300 200 100 100 Ambient Temperature Ta (°C) Seiko Instruments Inc. S-L2985 Series (Ta = 25°C unless otherwise specified) Unit + 0 0 °C 150 5 ...
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... HIGH RIPPLE-REJECTION WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2985 Series Electrical Characteristics Item Symbol *1 Output voltage V OUT(E) *2 Output current I OUT *3 Dropout voltage V drop Δ V OUT1 Line regulation Δ • ΔV Load regulation OUT2 Δ V Output voltage OUT Δ • ...
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... A 5. Set to Power VIN VOUT + V ON/OFF VSS Figure 4 A VIN VOUT ON/OFF VSS Set GND IN Figure 5 + VIN VOUT A V ON/OFF VSS Figure 6 VOUT VIN + + ON/OFF V VSS Figure 7 VIN VOUT + V ON/OFF VSS Figure 8 Seiko Instruments Inc. S-L2985 Series + ...
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... HIGH RIPPLE-REJECTION WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2985 Series Standard Circuit Caution The above connection diagram and constant will not guarantee successful operation. Perform thorough evaluation using the actual application to set the constant. Application Conditions Input capacitor ( Output capacitor (C ...
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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-L2985 Series enables use of a low ESR capacitor, such as a ceramic capacitor, for the output-side capacitor C 10 Ω or less can be used. ...
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... Specified output voltage *3. Output voltage temperature coefficient 10 ⎛ ΔV ⎜ OUT t of output voltage ⎜ ⎜ • ΔTa V ⎝ OUT Ex. S-L2985B28 Typ. V OUT [V] *1 OUT(E) − the value of the output voltage measured at 25°C. OUT(E) Figure 10 Δ × ° ÷ ...
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... VIN Current VSS *1. 2. Output transistor The S-L2985 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 the VOUT pin through a parasitic diode to the VIN pin. ) with V ...
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... Figure 12 Selection of Output Capacitor (C The S-L2985 Series requires an output capacitor between the VOUT and VSS pins for phase compensation. A ceramic capacitor with a capacitance of 0.47 μF or more can be used. Even if using an OS capacitor, tantalum capacitor, or aluminum electrolytic capacitor, a capacitance of 0.47 μF or more and an ESR of 10 Ω or less are required ...
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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 input capacitor(C ), the distance from the capacitor to the L IN 1.0 μF or more 0.47 μF or more Seiko Instruments Inc. S-L2985 Series 13 ...
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... I 1.3 OUT 1.1 1.0 1.0 1.5 2.0 V [V] IN S-L2985B50 (Ta = 25°C) 5.5 5.0 4 OUT 4 3 3.0 2.5 2.0 3.0 4 S-L2985B30 (Ta = 25°C) 2.5 V 400 500 600 Remark In determining the output current, attention 400 500 600 S-L2985B30 (Ta = 25°C) 2.5 3.0 3.5 6.0 7.0 5.0 Seiko Instruments Inc. 3.5 3.0 2 2.0 6.5 V 1.5 1.0 0.5 0 400 500 0 100 200 300 ...
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... Dropout voltage vs. Set output voltage 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0. [V] OTA S-L2985B30 0.45 0.40 25°C 0.35 0.30 0.25 –40°C 0.20 0.15 0.10 0.05 0 200 150 0 25°C –40°C 150 200 150 mA 100 Seiko Instruments Inc. S-L2985 Series 85°C 25°C –40°C 200 50 100 150 I [mA] OUT 15 ...
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... HIGH RIPPLE-REJECTION WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR S-L2985 Series (5) Output voltage vs. Ambient temperature S-L2985B15 1.60 1.55 1.50 1.45 1.40 –25 0 – [°C] S-L2985B50 5.3 5.2 5.1 5.0 4.9 4.8 4.7 –50 – [°C] (6) Current consumption vs. Input voltage S-L2985B15 120 100 80 25°C 60 85°C 40 –40° [V] ...
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... Frequency [Hz] S-L2985B50 (Ta = 25° 0.47 μ OUT 100 100 1k 10k Frequency [Hz] S-L2985B30 (Ta = 25° 100 = OUT 100k OUT 100k 1M Seiko Instruments Inc. S-L2985 Series = 0.47 μF ...
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... S-L2985B50 (Ta = 25° 0.47 μ 1.0 μ OUT IN 5.20 5.15 I OUT 5.10 5.05 V OUT 5.00 4.95 4.90 -40 - 100 120 140 t [μs] 18 S-L2985B30 (Ta = 25° μ mA 5.0 μ OUT 3.08 4.0 3.5 3.06 3.0 3.04 2.5 2.0 3.02 1.5 3.00 1.0 2.98 0 μ S-L2985B30 (Ta = 25°C) = 50↔ ...
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... HIGH RIPPLE-REJECTION WLP PACKAGE LOW DROPOUT CMOS VOLTAGE REGULATOR Rev.2.1 _00 (3) ON/OFF pin transient response characteristics S-L2985B15 (Ta = 25° 0.47 μ 1.0 μ OUT ON/OFF OUT 0 –1 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 t [ms] S-L2985B30 (Ta = 25°C) = 100 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 ...