データシートサーチシステム |
|
SI-3201S データシート(PDF) 1 Page - Sanken electric |
|
SI-3201S データシート(HTML) 1 Page - Sanken electric |
1 / 2 page Features q Output current of 3A (Ta = 25ºC, VIN = 8 to 18V) q High efficiency of 82% (VIN = 14V, IO = 2A) q Requires 5 external components only q Built-in reference oscillator (60kHz) q Phase internally corrected q Output voltage internally corrected q Built-in overcurrent and thermal protection circuits q Built-in soft start circuit Parameter Symbol Unit Conditions Ratings Absolute Maximum Ratings Electrical Characteristics Recommended Operating Conditions External Dimensions (unit: mm) Standard Circuit Diagram Parameter Symbol min typ max min typ max Unit Conditions Ratings (Ta=25ºC) Input voltage Output voltage SQ terminal voltage with respect to ground Power Dissipation Output voltage Load regulation Line regulation Discharge resistance (VIN = 14V, IOUT = 2A, Tj = 25ºC unless otherwise specified) Junction temperature Storage temperature Junction to case thermal resistance Junction to ambient-air thermal resistance VIN IO VO, SQ VO VIN =8 to 18V VSSL =0.2V 4.80 5.00 82 50 60 5 3.1 5.20 100 V 50 mV 0.2 25 35 4 V 15 µA k Ω mV VO LINE VO LOAD Efficiency IO =0.5 to 3A % Oscillation frequency 70 kHz fOSC Quiescent circuit current IO =0A 10 mA Iq Overcurrent protection starting current A IS VSSL I SSL RDIS PD1 PD2 Tj Tstg j -c j -a Low level voltage Source current when low Soft start terminal V A With infinite heatsink Stand-alone V W W ºC ºC ºC/W ºC/W 35 3 –1 22 1.8 –40 to +150 –40 to +125 5.5 66.7 Notes: *1. Efficiency is calculated by the following equation: *2. A drooping-type overcurrent protection circuit is built in the IC. *3. An external voltage may not be applied to the soft start terminal. As shown in the diagram to the right, use this IC in the soft start mode with a capacitor or in the open-collector drive mode with a transistor. Leave the soft start terminal open when not using it since it is already pulled up in the IC. a b 123 4 5 10.0 3.2 0.95 0.85 P1.7 •4 = 6.8 4.2 ±0.2 2.8 ±0.2 2.6 ±0.1 3.9 8.2 ±0.7 ±0.7 0.45 –0.1 +0.2 –0.1 +0.2 (4.3) 1. VIN 2. SWOUT 3. GND 4. VOS 5. SS a: Type No. b: Lot No. (Forming No. 1101) Parameter Symbol Unit Conditions Ratings Input voltage Output current Operating temperature VIN IO Top V A Ta—PD characteristics ºC 8 0.5 –40 18 3 +85 18 Switching Type Regulator SI-3201S VO • IO VIN • IIN = • 100 (%) SS 5 SS C3 C3 5 SS 5 SI-3201S SI-3201S SI-3201S SI-3201S VIN VIN C1 C3 C2 C1: 1000 µF C2: 1000 µF L1: 250 µH D1: RK46 (Sanken) VO CQ SW Tr L1 D1 VS GND GND GND 5 3 4 2 1 SS + + a e d b g c h i f a: Internal power supply b: Thermal protection c: Reference oscillator d: Reset e: Latch & driver f : Comparator g: Overcurrent protection h: Error amplifier i : Reference voltage Cautions: (1) A high-ripple current flows through C1 and C2. Use high-ripple type 1000 µF or higher capacitors with low internal resistance. Refer to the respective data books for more information on reliability and electrical characteristics of the capacitor. (2) C3 is a capacitor used for soft start. (3) L1 should be a choke coil with a low core loss for switching power supplies. (4) Use a Schottky barrier diode for D1 and make sure that the reverse voltage applied to the 2nd terminal (SQ terminal) is within the maximum ratings (–1V). If you use a fast-recovery diode, the recovery voltage and the ON forward voltage may cause a reversed-bias voltage exceeding the maximum ratings to be applied to the 2nd terminal (SQ terminal). Applying a reversed-bias voltage exceeding the maximum rating to the 2nd terminal (SQ terminal) may damage the IC. (5) The 4th terminal (VS) is an output voltage detection terminal. Since this terminal has a high impedance, connect it to the positive (+) terminal of C2 via the shortest possible route. (6) Leave the 5th terminal (soft start terminal) open when not using it. It is pulled up internally. (7) To ensure optimum operating environment, connect the high- frequency current line with minimum wiring length. *1 *3 *2 ±0.2 ±0.2 ±0.15 ±0.7 ±0.7 |
同様の部品番号 - SI-3201S |
|
同様の説明 - SI-3201S |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |