JAJSQ32A August   2023  – January 2024 TPS7A53B

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Voltage Regulation Features
        1. 6.3.1.1 DC Regulation
        2. 6.3.1.2 AC and Transient Response
      2. 6.3.2 System Start-Up Features
        1. 6.3.2.1 Programmable Soft-Start (NR/SS Pin)
        2. 6.3.2.2 Internal Sequencing
          1. 6.3.2.2.1 Enable (EN)
          2. 6.3.2.2.2 Undervoltage Lockout (UVLO) Control
          3. 6.3.2.2.3 Active Discharge
        3. 6.3.2.3 Power-Good Output (PG)
      3. 6.3.3 Internal Protection Features
        1. 6.3.3.1 Foldback Current Limit (ICL)
        2. 6.3.3.2 Thermal Protection (Tsd)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Regulation
      2. 6.4.2 Disabled
      3. 6.4.3 Current Limit Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1  Recommended Capacitor Types
        1. 7.1.1.1 Input and Output Capacitor Requirements (CIN and COUT)
        2. 7.1.1.2 Noise-Reduction and Soft-Start Capacitor (CNR/SS)
        3. 7.1.1.3 Feed-Forward Capacitor (CFF)
      2. 7.1.2  Soft-Start and Inrush Current
      3. 7.1.3  Optimizing Noise and PSRR
      4. 7.1.4  Charge Pump Noise
      5. 7.1.5  Current Sharing
      6. 7.1.6  Adjustable Operation
      7. 7.1.7  Power-Good Operation
      8. 7.1.8  Undervoltage Lockout (UVLO) Operation
      9. 7.1.9  Dropout Voltage (VDO)
      10. 7.1.10 Device Behavior During Transition From Dropout Into Regulation
      11. 7.1.11 Load Transient Response
      12. 7.1.12 Reverse Current Protection Considerations
      13. 7.1.13 Power Dissipation (PD)
      14. 7.1.14 Estimating Junction Temperature
      15. 7.1.15 TPS7A53EVM Thermal Analysis
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
        1. 7.4.1.1 Board Layout
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 ドキュメントの更新通知を受け取る方法
    4. 8.4 サポート・リソース
    5. 8.5 Trademarks
    6. 8.6 静電気放電に関する注意事項
    7. 8.7 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

4 Pin Configuration and Functions

GUID-3ACA1BB7-0495-481A-BFB4-2877E698368E-low.svgFigure 4-1 RPS Package,2.5mm × 2.2mm, 12-Pin VQFN(Top View)
Table 4-1 Pin Functions
PINDESCRIPTION
NAMENO.I/O
BIAS5IBIAS pin. This pin enables using low-input voltage, low-output (LILO) voltage conditions (that is, VIN = 1.2V, VOUT = 1V) to reduce power dissipation across the die. Using a BIAS voltage improves dc and ac performance for VIN ≤ 2.2V. A 1µF capacitor or larger must be connected between this pin and ground. If not used, this pin must be left floating or tied to ground.
EN3IEnable pin. Driving this pin to logic high enables the device; driving this pin to logic low disables the device. This pin must be connected to IN or BIAS if not driven externally.
FB9IFeedback pin. Although not required, use a 10nF feed-forward capacitor from FB to OUT (as close to the device as possible) to maximize ac performance. A feed-forward capacitor can disrupt power-good (PG) functionality. See the Adjustable Operation section for more details.
GND6, 7, 12—Ground pin. These pins must be connected to ground and each other with a low-impedance connection.
IN1, 2IInput supply voltage pin. Use a 10µF or larger ceramic capacitor (5µF or greater of capacitance) from IN to ground to reduce input supply impedance. Place the input capacitor as close to the input as possible. See the Input and Output Capacitor Requirements section for more details.
NR/SS4—Noise-reduction and soft-start pin. Connecting an external capacitor between this pin and ground reduces reference voltage noise and also enables the soft-start function. Although not required, connect a 10nF or larger capacitor from NR/SS to GND (as close to the pin as possible) to maximize ac performance. See the Noise-Reduction and Soft-Start Capacitor section for more details.
OUT10, 11ORegulated output pin. A 47µF or larger ceramic capacitor (25µF or greater of capacitance) from OUT to ground is required for stability and must be placed as close to the output as possible. Minimize the impedance from the OUT pin to the load. See the Input and Output Capacitor Requirements section for more details.
PG8OActive-high, power-good pin. An open-drain output indicates when the output voltage reaches VIT(PG) of the target. A feed-forward capacitor can disrupt PG (power good) functionality. See the Power-Good Output section for more details.