SLTS262K October   2005  – May 2026 PTH08T210W

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Electrical Characteristics
    4. 5.4 Typical Characteristics
    5. 5.5 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview: TurboTrans™ Technology
    2. 6.2 Feature Description
      1. 6.2.1 Soft-Start Power Up
      2. 6.2.2 Remote Sense
  8. 7 Application and Implementation
    1. 7.1 Typical Application
      1. 7.1.1 Detailed Design Procedure
        1. 7.1.1.1 Capacitor Recommendations
          1. 7.1.1.1.1 Input Capacitor (Required)
          2. 7.1.1.1.2 TurboTrans Output Capacitor
          3. 7.1.1.1.3 Non-TurboTrans Output Capacitor
          4. 7.1.1.1.4 Ceramic Capacitors
          5. 7.1.1.1.5 Tantalum, Polymer-Tantalum Capacitors
          6. 7.1.1.1.6 Capacitor Table
          7. 7.1.1.1.7 Designing for Fast Load Transients
        2. 7.1.1.2 TurboTrans™ Selection
          1. 7.1.1.2.1 RTT Resistor Selection
          2. 7.1.1.2.2 RTT Resistor Selection
          3. 7.1.1.2.3 RTT Resistor Selection
        3. 7.1.1.3 Adjusting the Output Voltage
        4. 7.1.1.4 Undervoltage Lockout (UVLO)
        5. 7.1.1.5 UVLO Adjustment
        6. 7.1.1.6 Output On/Off Inhibit
        7. 7.1.1.7 Overcurrent Protection
        8. 7.1.1.8 Overtemperature Protection (OTP)
        9. 7.1.1.9 Auto-Track™ Function
          1. 7.1.1.9.1 How Auto-Track™ Works
          2. 7.1.1.9.2 Typical Application
          3. 7.1.1.9.3 Notes on Use of Auto-Track™
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel and Tray Drawings
7.1.1.2.1 RTT Resistor Selection

The TurboTrans resistor value, RTT can be determined from the TurboTrans programming equation, see Equation 1.

Equation 1. PTH08T210W

Where CO is the total output capacitance in μF. CO values greater than or equal to 2350 μF require RTT to be a short, 0Ω. (Equation 1 will result in a negative value for RTT when CO  ≥ 2350 μF.)

PTH08T210W Type B Capacitor (e.g. Polymer-Tantalum)
1000 ≤ C(μF)xESR(mΩ) ≤ 5000 12-V Input
Figure 7-4 Type B Capacitor (e.g. Polymer-Tantalum)
PTH08T210W Type B Capacitor (e.g. Polymer-Tantalum)
1000 ≤ C(μF)xESR(mΩ) ≤ 5000 12-V Input
Figure 7-5 Type B Capacitor (e.g. Polymer-Tantalum)
Table 7-3 Type B TurboTrans COValues and Required RTT Selection Table
Transient Voltage Deviation (mV) 12 V Input 8 V Input
25%
Load Step
(7.5 A)		 50%
Load Step
(15 A)		 75%
Load Step
(22.5 A)		 CO
Minimum Required Output Capacitance
(μF)		 RTT
Required TurboTrans
Resistor (Ω)		 CO
Minimum Required Output Capacitance
(μF)		 RTT
Required TurboTrans
Resistor (Ω)
100 200 300 470 open 540 205 k
90 180 270 500 499 k 620 93.1 k
80 160 240 580 127 k 720 52.3 k
70 140 210 680 63.4 k 840 32.4 k
60 120 180 800 37.4 k 1000 20.5 k
50 100 150 1000 20.5 k 1300 10.2 k
40 80 120 1300 10.2 k 1700 4.22 k
30 60 90 1800 3.32 k 2300 221
25 50 75 2200 698 4900 0
20 40 60 5400 0 14000 0