Zakładka z wyszukiwarką danych komponentów |
|
LM3475 Arkusz danych(PDF) 11 Page - Texas Instruments |
|
LM3475 Arkusz danych(HTML) 11 Page - Texas Instruments |
11 / 24 page VOUT = 2.5V/2A CIN COUT RFB1 RFB2 L1 D1 Q1 10 PF 100 PF 10 PH 1k 2.15k Si2343 LM3475 VIN EN GND PGATE FB 1 2 3 4 5 CFF 1 nF VIN = 5V LM3475 www.ti.com SNVS239C – OCTOBER 2004 – REVISED OCTOBER 2015 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information The LM3475 employs a hysteretic control architecture; which provides excellent load transient response and efficiency even at light loads, as compared to its PWM architectures. No external compensation is required which results in a simple design and low component count. A typical schematic is described in the next section. 8.2 Typical Application Figure 10. Full Demo Board Schematic 8.2.1 Design Requirements To properly size the components for the application, the designer needs the following parameters: input voltage range, output voltage, output current range, and required switching frequency. These four main parameters affect the choices of component available to achieve a proper system behavior. Although hysteretic control is a simple control scheme, the operating frequency and other performance characteristics depend on external conditions and components. If the inductance, output capacitance, ESR, VIN, or Cff is changed, there will be a change in the operating frequency and possibly output ripple. Therefore, care must be taken to select components which will provide the desired operating range. 8.2.2 Detailed Design Procedure Table 1. Bill of Materials DESIGNATOR DESCRIPTION PART NUMBER VENDOR CIN 10 µF, 16 V, X5R EMK325BJ106MN TAIYO YUDEN COUT 100 µF, 6 V, Ta TPSY107M006R0100 AVX CFF 1 nF, 25 V, X7R VJ1206Y102KXXA Vishay D1 Schottky, 20 V, 2 A CMSH2-20L Central Semiconductor L1 10 µH, 3.1 A CDRH103R100 Sumida Q1 30 V, 2.5 A Si2343 Vishay RFB2 1 k Ω, 0805, 1% CRW08051001F Vishay RFB1 2.15 k Ω, 0805, 1% CRCW08052151F Vishay Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM3475 |
Podobny numer części - LM3475_15 |
|
Podobny opis - LM3475_15 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |