S-814 SII [Seiko Instruments Inc], S-814 Datasheet
S-814
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S-814 Summary of contents
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... Various types of output capacitors can be used in the S-814 Series compared with the past CMOS voltage regulators. (i.e., Small ceramic capacitors can also be used in the S-814 Series.) The SOT-23-5 miniaturized package and the SOT-89-5 packages are recommended to use for configuring portable devices and large output current applications, respectively. Typ. 30 μ ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series Block Diagram VIN ON/OFF VSS *1. Parasitic diode Shutdown − circuit Short-circuit protection Reference circuit voltage Figure 1 Seiko Instruments Inc. Rev.2.1 _00 VOUT ...
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... Rev.2.1 _00 Product Name Structure 1. Product Name S-814 xx- xxx T2 G *1. Refer to the taping specifications at the end of this book. *2. Refer to the Table 1 in “2. Product name list”. *3. Refer to “3. ON/OFF pin (Shutdown pin)” in “ LOW DROPOUT CMOS VOLTAGE REGULATOR ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series 2. Product Name List Output voltage 2.0 V±2.0 % 2.1 V±2.0 % 2.2 V±2.0 % 2.3 V±2.0 % 2.4 V±2.0 % 2.5 V±2.0 % 2.6 V±2.0 % 2.7 V±2.0 % 2.8 V±2.0 % 2.9 V±2.0 % 3.0 V±2.0 % 3.1 V±2.0 % 3.2 V±2.0 % 3.3 V±2.0 % 3.4 V±2.0 % 3.5 V±2.0 % 3.6 V±2.0 % 3.7 V±2.0 % 3.8 V±2.0 % 3.9 V±2.0 % 4.0 V±2.0 % 4.1 V±2.0 % 4.2 V±2.0 % 4.3 V±2.0 % 4.4 V±2.0 % 4.5 V±2.0 % 4.6 V±2.0 % 4.7 V±2.0 % 4.8 V±2.0 % 4.9 V± ...
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... VOUT 2 VSS ON/OFF 5 VIN *1. The NC pin is electrically open. The NC pin can be connected to VIN or VSS. Seiko Instruments Inc. S-814 Series Pin description Voltage input pin GND pin Shutdown pin *1 No connection Voltage output pin Pin description Voltage output pin GND pin *1 ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series Absolute Maximum Ratings Item Input voltage Output voltage SOT-23-5 Power dissipation SOT-89-5 Operating ambient temperature Storage temperature *1. When mounted on board [Mounted on board] 114.3 mm × 76.2 mm × t1.6 mm (1) Board size : (2) Board name : JEDEC STANDARD51-7 Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage ...
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... OUT(S) ON/OFF = VOUT pin OUT( f=100 Hz, ΔVrip=0.5 Vrms, IN OUT(S) =30 mA (=30 mA) and inputting V OUT Seiko Instruments Inc. S-814 Series (Ta=25°C unless otherwise specified) Min. Typ. Max OUT(S) OUT(S) OUT(S) ×0.98 ×1.02 *3 ⎯ ⎯ 100 *3 ⎯ ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series =V −(V ×0.98) *1 *4. V drop IN1 OUT(E) *1. Input voltage at which the output voltage falls voltage. *5. The change in temperature [mV/°C] is calculated using the following equation. Δ OUT ° OUT Δ Ta *1. Change in temperature of the dropout voltage *2 ...
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... ON/OFF VSS Set to power ON Figure 7 5. VIN ON/OFF Set to power ON Figure 9 LOW DROPOUT CMOS VOLTAGE REGULATOR VOUT + VSS Seiko Instruments Inc. S-814 Series + VIN VOUT A ON/OFF VSS Set GND IN Figure 6 VIN VOUT + A ON/OFF V VSS Figure ...
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... The low dropout voltage regulator is a voltage regulator featuring a low dropout voltage characteristic due to its internal low ON-resistance characteristic transistors. 2. Low ESR ESR is the abbreviation for Equivalent Series Resistance. The low ESR output capacitor (C used in the S-814 Series. 3. Output voltage (V ) OUT The accuracy of the output voltage is ensured at ± ...
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... IN1 Δ ⎛ ⎞ V OUT ⎜ ⎟ Δ • ⎝ ⎠ OUT varies in the operating temperature range when OUT *1 −40 25 Figure 11 Typical example of S-814A28A Δ OUT × ° ppm / C ) Δ • OUT Seiko Instruments Inc ...
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... VIN Current source Reference voltage VSS *1. Parasitic diode 2. Output transistor The S-814 Series uses a low on-resistance Pch MOS FET as the output transistor. does not exceed V Be sure that V OUT inverse current flowing from VOUT pin through a parasitic diode to VIN pin. 12 with part of the output voltage divided by the ref ...
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... B “L”: Power on 4. Short-circuit protection circuit The S-814 Series incorporates a short-circuit protection circuit to protect the output transistor against short-circuiting between VOUT pin and VSS pin. The short-circuit protection circuit controls output current as shown in “1. Output voltage vs. Output current (When load current increases)” curve in “ ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series Selection of Output Capacitor (C Mount an output capacitor between VOUT pin and VSS pin for phase compensation. The S-814 Series enables customers to use a ceramic capacitor as well as a tantalum or an aluminum electrolytic capacitor. • A ceramic capacitor capacitor: Use a capacitor of 0.47 μ ...
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... Remark In determining the output current, attention The minimum output current value and footnote * Table 5 in the “ Electrical characteristics”. 2. The package power dissipation. 5.5 V 600 800 ) IN S-814A30A (Ta = 25° ( 100 μ (V) Seiko Instruments Inc ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series 3. Maximum output current (I S-814A20A 300 Ta=−40°C 200 85°C 100 S-814A50A 800 Ta=−40°C 600 25°C 400 200 Dropout voltage (V ) vs. Output current (I drop S-814A20A 300 250 Ta=− ...
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... OUT 0 − [°C] LOW DROPOUT CMOS VOLTAGE REGULATOR S-814A30A =3V, I =30mA IN OUT 3.06 3.03 3.00 2.97 2.94 50 100 =6V, I =30mA IN OUT 50 100 =30 mA OUT 50 100 Seiko Instruments Inc. S-814 Series =4V, I =30mA V IN OUT − [°C] 100 17 ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series 7. Load regulation (ΔV ) vs. Ambient temperature (Ta) OUT3 S-814A20A/S-814A30A/S-814A50A = OUT(S) OUT OUT 10 0 − [°C] 8. Current consumption (ΔI S-814A20A 40 85 ° ° −40 °C ...
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... Threshold voltage of shutdown pin (V S-814A20A 2.5 2 1.5 1.0 0 [V] IN S-814A50A 2.5 2 1.5 1.0 0 [V] IN LOW DROPOUT CMOS VOLTAGE REGULATOR /V ) vs. Input voltage ( S-814A30A Seiko Instruments Inc. S-814 Series ) IN 2.5 2 1.5 1 ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series Reference Data 1. Transient Response Characteristics (S-814A30A, Typical data, Ta=25°C) Input voltage or Load current Output volatage 1-1. At power on Output voltage (V ) – Time (t) OUT OUT [50 μs/div] Load dependencies of overshoot =0→ ...
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... C dependencies of overshoot OUT( 0.8 0.6 0.4 0.2 Temperature dependencies of overshoot DD 1 0.8 0.6 0.4 0 [V] Seiko Instruments Inc. S-814 Series + =30 mA, ON/OFF=0→V OUT(S) OUT OUT 0 0 [μ =30 mA μ OUT(S) OUT L +1V ON/OFF=0→V ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series 1-3. At power fluctuation Output voltage (V ) – Time (t) OUT μ OUT [50 μs/div] Load dependencies of overshoot = → OUT(S) 0 0 OUT 0 1.E − 05 1.E − 04 1.E − 03 1.E − 02 1.E − ...
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... V DD LOW DROPOUT CMOS VOLTAGE REGULATOR Temperature dependencies of undershoot =30 mA μ 1.0 0.8 0 0.4 0 [V] Seiko Instruments Inc. S-814 Series +2 V→ =30 mA, C OUT(S) OUT(S) OUT OUT 0 − [°C] =1 μF L 100 23 ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR S-814 Series 1-4. At load fluctuation Output voltage (V ) – Time (t) OUT I OUT OUT 10 μA =1 μ OUT C t [20 μs/div] Load current dependencies of overshoot = OUT( 0.6 0.4 0.2 0 1.E−03 1.E−02 ΔI Remark ΔI shows larger load current at load OUT current fluctuation ...
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... LOW DROPOUT CMOS VOLTAGE REGULATOR C dependence of undershoot μ OUT 1.E−01 1.E+00 [A] Temperature dependencies of undershoot =1 μ [V] Seiko Instruments Inc. S-814 Series = =10 μA→ OUT(S) OUT 1 1.0 0 0.6 0 0.2 OUT 0 0 [μF] ...
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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 ...