データシートサーチシステム |
|
TLV767-Q1 データシート(PDF) 20 Page - Texas Instruments |
|
|
TLV767-Q1 データシート(HTML) 20 Page - Texas Instruments |
20 / 28 page TLV767 IN EN GND FB OUT CIN R1 R2 COUT CFF (opt.) 20 TLV767-Q1 SBVS381 – APRIL 2020 www.ti.com Product Folder Links: TLV767-Q1 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated 8.2 Typical Application This section discusses implementing this device for a typical application. Figure 39 shows the application circuit. Figure 39. Typical Application Circuit 8.2.1 Design Requirements Table 2 summarizes the design requirements for this application. Table 2. Design Parameters PARAMETER DESIGN REQUIREMENT Input voltage 5 V Output voltage 3.3 V Output current 100 mA 8.2.2 Detailed Design Procedure 8.2.2.1 Transient Response As with any regulator, increasing the size of the output capacitor reduces overshoot and undershoot magnitude. If load transients are expected with ramp rates greater than 0.5 A/µs, use a 2.2-µF or larger output capacitor. 8.2.3 Choose Feedback Resistors For this design example, VOUT is set to 3.3 V. The following equations set the feedback divider resistors for the desired output voltage: VOUT = VFB × (1 + R1 / R2) (11) R1 + R2 ≤ VOUT / (IFB × 100) (12) For improved output accuracy, use Equation 12 and IFB = 50 nA as listed in the Electrical Characteristics table of the Specifications section to calculate the upper limit for series feedback resistance (R1 + R2 ≤ 660 kΩ). The control-loop error amplifier drives the FB pin to the same voltage as the internal reference (VFB = 0.8 V, as listed in the Electrical Characteristics table). Use Equation 11 to determine the ratio of R1 / R2 = 3.125. Use this ratio and solve Equation 12 for R2. Now calculate the upper limit for R2 ≤ 160 kΩ. Select a standard value resistor for R2 = 160 kΩ. Reference Equation 11 and solve for R1: R1 = (VOUT / VFB – 1) × R2 (13) From Equation 13, R1 = 500 kΩ can be determined. Select a standard value resistor for R1 = 499 kΩ. VOUT = 3.3 V (as determined by Equation 11). |
同様の部品番号 - TLV767-Q1 |
|
同様の説明 - TLV767-Q1 |
|
|
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 |