JAJSOS6 November   2023 TPS568236

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  PWM Operation and D-CAP3 Control Mode
      2. 6.3.2  VCC LDO
      3. 6.3.3  Soft Start
      4. 6.3.4  Enable Control
      5. 6.3.5  Power Good
      6. 6.3.6  Overcurrent Protection and Undervoltage Protection
      7. 6.3.7  UVLO Protection
      8. 6.3.8  Overvoltage Protection
      9. 6.3.9  Output Voltage Discharge
      10. 6.3.10 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 MODE Pin
      2. 6.4.2 Forced Continuous Conduction Operation
      3. 6.4.3 Power Save Mode (PSM)
  8. 7  Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 External Component Selection
          1. 7.2.2.1.1 Inductor Selection
          2. 7.2.2.1.2 Output Capacitor Selection
          3. 7.2.2.1.3 Input Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 ドキュメントの更新通知を受け取る方法
    3. 8.3 サポート・リソース
    4. 8.4 Trademarks
    5. 8.5 静電気放電に関する注意事項
    6. 8.6 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-20230731-SS0I-MNHQ-5VHJ-N1GFPWKLZQ9V-low.svg Figure 4-1 RJN Package12-Pin VQFN-HR(Top View)
Table 4-1 Pin Functions
PINTYPE(1)DESCRIPTION
NAMENO.
VIN

1

PInput voltage supply pin for the control circuitry. Connect the input decoupling capacitors between VIN and PGND.
PGND

2

GPower ground terminal for the internal power FET.
PG

3

OOpen Drain Power-Good Indicator. This pin is asserted low if output voltage is out of PG threshold, overvoltage or if the device is under thermal shutdown, EN shutdown or during soft start.
FB

4

ITPS568236 uses FB pin to regulate output voltage via feedback resistor divider network.

SS

5

I/O

Soft-start time selection pin. Connecting an external capacitor sets the soft-start time and if no external capacitor is connected, the soft-start time is approximately 1 ms.
NC

6

 — No connect pin
SW

7

OSwitch node terminal. Connect the output inductor to this pin.

VBST

8

ISupply input for the high-side MOSFET gate drive. Connect the bootstrap capacitor between VBST and SW.
VCC

9

O5-V internal VCC LDO output. This pin supplies voltage to the internal circuitry and gate driver. Bypass this pin with a 1-µF capacitor.
AGND

10

GGround of internal analog circuitry. Connect AGND to PGND at a single point close to AGND.
EN

11

IEnable pin of buck converter. EN pin is a digital input pin, pull up to enable the converter, pull down to disable. Internal pulldown if EN pin is floating.

MODE

12

I

Mode selection pin. Connect MODE pin to VCC, or pull above 0.8 V for OOA mode operation, connect MODE to AGND or float for Power Save Mode. Internal pulldown if MODE pin is floating.

(1) I = input, O = output, P = power, G = ground