S-8352C32UA-K6RT2G Seiko Instruments, S-8352C32UA-K6RT2G Datasheet
S-8352C32UA-K6RT2G
Specifications of S-8352C32UA-K6RT2G
Related parts for S-8352C32UA-K6RT2G
S-8352C32UA-K6RT2G Summary of contents
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... PFM control circuit. The PFM control circuit allows the duty ratio to be automatically switched according to the load (at light load : 50%, at high output current : 75%), enabling products with a low ripple over a wide range, high efficiency, and high output current (A, B, and D type). Products with a fixed duty ratio of 75% are also available (C type). ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series Block Diagrams 1. S-8351 Series (1) A Type (With shutdown function) (2) B and C Types (Without shutdown function, V (3) D Type ( separate type) DD OUT 2 CONT IC internal power supply Protection circuit V PFM + control − ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 2. S-8352 Series (1) A Type (With shutdown function) (2) B and C Type (Without Shutdown function, V (3) D Type ( separate type) DD OUT IC internal power supply PFM + EXT control − circuit ON / OFF Figure 4 ...
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... The product types, output voltage, and packages for the S-8351/8352 Series can be selected at the user’s request. Please refer to the “3. Product Name” for the definition of the product name, “4. Package” regarding the package drawings and “5. Product Name List” for the full product names. ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 2. Package and Function List by Product Type Series Name A (Duty ratio 50% / 75% auto-switching type 100 kHz B (Duty ratio 50% / 75% auto-switching type) S-8351 Series 100 kHz S-8352 Series C (Duty ratio 75% fixed type) ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series (2) SOT-23-5, SOT-89-3 S-835 xxx T2 x *1. Refer to the tape specifications. *2. Refer to the Table the “5. Product Name List”. 4. Package Package Name SOT-23-3 SOT-23-5 SOT-89-3 6 Environmental code U : Lead-free (Sn 100%), halogen-free ...
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... S-8352A46MC-K3FT2x 4.7 V S-8352A47MC-K3GT2x 5.0 V S-8352A50MC-K3JT2x 5.4 V S-8352A54MC-K3NT2x − 5.6 V Remark 1. Please contact the SII marketing department for products with an output voltage other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. Table 4 S-8351BxxMA S-8351CxxMA Series Series − ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series Pin Configurations SOT-23-3 Top view Figure 7 SOT-23-5 Top view Figure 8 8 Table 6 S-8351 Series B and C Types (Without shutdown function, V Pin No. Symbol 1 VOUT Output voltage pin and IC power supply pin ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 SOT-89-3 Top view Figure 9 Table 10 S-8351 Series D Type (Without shutdown function, V Pin No. Symbol 1 VOUT Output voltage pin 2 VDD IC power supply pin * connection 4 VSS GND pin 5 CONT External inductor connection pin (Open-drain output) *1 ...
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... Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Board name : JEDEC STANDARD51-7 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. (1) When mounted on board ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 Electrical Characteristics (1) S-8351 Series Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Input current during no- load I IN Current consumption 1 I SS1 ...
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... OFF S-8351x30 − S-8351x50 / 250 Ω / OFF pin is connected to V OUT = 0.8 V. However, 1.8 V ≤ ≥ 1.8 V must be applied for products with a set value of less DD Seiko Instruments Inc. (Ta = 25°C unless otherwise specified) Min. Typ. Max. Unit − − 0.75 V ≥1.5 V − ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 (2) S-8352 Series Item Symbol Output voltage V OUT Input voltage V IN Operation start voltage V ST1 Oscillation start voltage V ST2 Current consumption 1 I SS1 Current consumption 2 I SS2 Current consumption during ...
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... ON / OFF S-8352x30 − S-8352x50 / 100 Ω OFF pin is connected to V OUT = 0.8 V. However, 1.8 V ≤ ≥ 1.8 V must be applied for products with a set value of less DD Seiko Instruments Inc. (Ta = 25°C unless otherwise specified) Min. Typ. Max. Unit − − 0.75 V ≥1.5 V − ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 Measurement Circuits 1. + CONT − ON VSS Figure 11 300 Ω 2. CONT VOUT * OFF VDD VSS Figure − EXT ON VSS Figure 13 4. EXT * OFF VSS Figure 14 *1. For separate type DD OUT *2 ...
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... In the A, B, and D types, the duty ratio is automatically switched 75% when the output load current is high to secure the load drive capability and 50% when the output load current is low to control the load drive capability to decrease pulse skipping ...
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... The ON / OFF pin does not have hysteresis. CR oscillation circuit ON / OFF pin “H” “L” *1. Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode forward voltage from Table 17 Output voltage Operation Fixed ≅V *1 Stop IN VOUT ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series 3. Operation The following are the basic equations [(1) through (7)] of the step-up switching regulator. (Refer to Figure 18.) VIN Figure 18 Step-Up Switching Regulator Circuit for Basic Equation Voltage at CONT pin at the moment M1 is turned ON (V ...
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... PK OUT OFF V − Therefore to reduce the ripple voltage important that the capacitor connected to the output pin has a large capacity and a small R . ESR t OUT ) is consumed result, the pin voltage When M1 is turned OFF, the energy stored transmitted through the ON rises rapidly time function, and therefore indicates the maximum value ...
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... As a result, stepping low voltage becomes difficult and the minimum operating input voltage becomes high. However, the direct current resistance loss of L value and the M1 transistor decreases by the amount I decreased, and the inductance efficiency improves. On the other hand inductor with a smaller L value is selected, both I minimum operating input voltage becomes low but the inductance efficiency deteriorates ...
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... MOS FET, and affect the output current as well as the efficiency, the threshold voltage should be low. When the output voltage is as low as 2.0 V, like in the S-8352A20, the circuit operates only when the MOS FET has a threshold voltage lower than the output voltage. ...
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... A small R value can increase the output current, but the efficiency decreases. Since a current may flow on the b pulse and the voltage may drop due to wiring resistance or other factors in the actual circuit, therefore the optimum R value should be determined by experiment. b Connecting the speed-up capacitor (C switching loss and improves the efficiency ...
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... V or more at the VDD pin for all products with a setting less than 1.9 V.) An input voltage of 1 more at the VDD pin allows connection of the VDD pin to either the input voltage VIN pin or output VOUT pin. ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series Standard Circuits 1. S-8351 Series (1) A type − (2) B and C types − CONT Protection circuit PFM control circuit / OFF Figure 21 SD CONT Protection circuit PFM control circuit Figure 22 Seiko Instruments Inc. ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 (3) D type − Caution The above connection diagram will not guarantee successful operation. evaluation using the actual application to set the constant. SD CONT VDD IC internal Protection power circuit supply ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series 2. S-8352 Series (1) A type − IN (2) B and C types − 2200 pF PFM control circuit EXT 1 kΩ OFF Figure 24 2200 pF PFM control circuit EXT 1 kΩ Figure 25 Seiko Instruments Inc. ...
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... Rev.3.0 _00 (3) D type L 2200 − IN Caution The above connection diagram and constants will not guarantee successful operation. Perform through evaluation using the actual application to set the constant. SD VDD IC internal power supply PFM control circuit EXT 1 kΩ Figure 26 Seiko Instruments Inc. ...
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... Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection IC. • SII claims no responsibility for any and all disputes arising out connection with any infringement of the products including this IC upon patents owned by third party. 28 Because they largely depend on the coil and the capacitor and Seiko Instruments Inc ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 Characteristics (Typical Data) 1. Input voltage (V ) vs. Powe Supply Input Current at No Load ( S-8351A30MC 45 40 S-8351A50MC [ Output Voltage (V ) vs. Current Consumption 1 (I OUT S-8351A [V] OUT 3. Temperature (Ta) vs. Current Consumption 1 (I ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series 6. Temperature (Ta) vs. Oscillation Frequency (f 140 S-8351A30MC 130 S-8351A50MC 120 110 100 90 80 −50 − [°C] 7. Temperature (Ta) vs. Duty Ratio 1 (Duty1) 80 S-8351A30MC 78 S-8351A50MC −50 − [°C] 9. Output Voltage (V ) vs. Switching Current (I ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 13. Output Voltage (V ) vs. EXT Pin Output Current “L” (I OUT [V] OUT 15. Temperature (Ta) vs. Operation Start Voltage (V S-8351A30MC 1.0 S-8351A50MC 0.9 0.8 0.7 0.6 −50 − [°C] ) 14. Temperature (Ta) vs. EXT Pin Output Current “L” (I EXTL Ta = 25° ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series 17. Transient Response Characteristics The conditions for external parts are the same as those specified in the electrical characteristics. (1) Power-on (Ta = 25°C, R S-8351A30MC Input voltage [0 div Output voltage [0 div [0 div] S-8352A30MC Input voltage [0 ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 S-8352A30MC Input voltage [0.5 V /div] 1.2 V Output voltage [0 div div] S-8352A50MC Input voltage [0.5 V /div Output voltage [0 div div] (3) Load Current Fluctuation (Ta = 25°C) S-8351A30MC Output current Output voltage [0 ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series S-8352A30MC Output current Output voltage [0 div div] S-8352A50MC Output current Output voltage [0 div div] (4) ON/ OFF Pin Response (Ta = 25°C, R S-8351A30MC ON / OFF voltage OFF Output voltage [0 ...
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... Forward voltage, *2. Forward current, *3. Collector-to-base voltage, *4. Collector-to-emitter voltage, *5. DC current gain, *6. Gain-bandwidth product Caution The above values shown in the characteristics column of Table 19 and 20 are based on the materials provided by each manufacture. However, consider the characteristics of the original materials when using the above products. ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series 2. Step-up Characteristics (Ta = 25°C) The data of the step-up characteristics ((a) Input voltage (V stepped up), (b) Input voltage (V current (I ) vs. Output voltage (V OUT under conditions Table 18 is shown below. Condition 1 S-8351A30MC (a) Input voltage ( ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 Condition 3 S-8351A30MC (a) Input voltage (V ) vs. Output voltage (V IN (Input voltage raising) 3.2 3.1 3.0 2.9 2.8 2.7 2 [V] IN (c) Output current (I ) vs.Output voltage (V OUT 3.2 3.1 3.0 2.9 2 ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series Condition 5 S-8351A50MC (a) Input voltage (V ) vs. Output voltage (V IN (Input voltage raising) 5.2 5.1 5.0 4.9 4.8 4.7 4 [V] IN (c) Output current (I ) vs.Output voltage (V OUT 5.2 5.1 5.0 4.9 4 ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 Condition 7 S-8352A30MC (a) Input voltage (V ) vs. Output voltage (V IN (Input voltage raising) 3.2 3.1 3.0 2.9 2.8 2.7 2 [V] IN (c) Output current (I ) vs.Output voltage (V OUT 3.2 3.1 3.0 2 ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER S-8351/8352 Series Condition 9 S-8352A30MC (a) Input voltage (V ) vs. Output voltage (V IN (Input voltage raising) 3.2 3.1 3.0 2.9 2.8 2.7 2 [V] IN (c) Output current (I ) vs.Output voltage (V OUT 3.2 3.1 3.0 2.9 2 ...
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... STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER Rev.3.0 _00 Condition 11 S-8352A50MC (a) Input voltage (V ) vs. Output voltage (V IN (Input voltage raising) 5.2 5.1 5.0 4.9 4.8 4.7 4 [V] IN (c) Output current (I ) vs.Output voltage (V OUT 5.2 5.1 5.0 4.9 4 ...
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... 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. ...