JAJSIM1 February   2020 LM60430 , LM60440

ADVANCE INFORMATION for pre-production products; subject to change without notice.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      概略回路図
      2.      効率と出力電流との関係 VOUT = 5V、400kHz
  4. 4 改訂履歴
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Characteristics
    7. 7.7 System Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power-Good Flag Output
      2. 8.3.2 Enable and Start-up
      3. 8.3.3 Current Limit and Short Circuit
      4. 8.3.4 Undervoltage Lockout and Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Auto Mode
      2. 8.4.2 Dropout
      3. 8.4.3 Minimum Switch On-Time
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Choosing the Switching Frequency
        2. 9.2.2.2  Setting the Output Voltage
        3. 9.2.2.3  Inductor Selection
        4. 9.2.2.4  Output Capacitor Selection
        5. 9.2.2.5  Input Capacitor Selection
        6. 9.2.2.6  CBOOT
        7. 9.2.2.7  VCC
        8. 9.2.2.8  CFF Selection
        9. 9.2.2.9  External UVLO
        10. 9.2.2.10 Maximum Ambient Temperature
      3. 9.2.3 Application Curves
    3. 9.3 EMI
    4. 9.4 What to Do and What Not to Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Ground and Thermal Considerations
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 デバイス・サポート
      1. 12.1.1 開発サポート
        1. 12.1.1.1 WEBENCH®ツールによるカスタム設計
    2. 12.2 ドキュメントのサポート
      1. 12.2.1 関連資料
    3. 12.3 ドキュメントの更新通知を受け取る方法
    4. 12.4 サポート・リソース
    5. 12.5 商標
    6. 12.6 静電気放電に関する注意事項
    7. 12.7 Glossary
  13. 13メカニカル、パッケージ、および注文情報

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

7.7 System Characteristics

The following specifications apply to a typical applications circuit, with nominal component values. Specifications in the typical (TYP) column apply to TJ = 25°C only. Specifications in the minimum (MIN) and maximum (MAX) columns apply to the case of typical components over the temperature range of TJ = –40°C to 150°C. These specifications are not ensured by production testing. 
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VIN Operating input voltage range VOUT = 3.3 V, IOUT= 0 A 3.8 36 V
VOUT Output voltage regulation for VOUT = 5 V(1) VOUT = 5 V, VIN = 7 V to 36 V, IOUT = 0 A to 4 A –1.6% 2.5%
VOUT = 5 V, VIN = 7 V to 36 V, IOUT = 1 A to 4 A –1.6% 1.5%
Output voltage regulation for VOUT = 3.3 V(1) VOUT = 3.3 V, VIN = 3.8 V to 36 V, IOUT = 0 A to 4 A –1.6% 2.5%
VOUT = 3.3 V, VIN = 3.8 V to 36 V, IOUT = 1 A to 4 A –1.6% 1.5%
ISUPPLY Input supply current when in regulation VIN = 12 V, VOUT = 3.3 V, IOUT = 0 A,
RFBT = 1 MΩ		 25 µA
VDROP Dropout voltage; (VIN – VOUT) VOUT = 5 V, IOUT = 1A
Dropout at –1% of regulation,
ƒSW = 140 kHz		 150 mV
DMAX Maximum switch duty cycle(2) VIN = VOUT = 12 V, IOUT = 1 A 98%
VHC FB pin voltage required to trip short-circuit hiccup mode 0.4 V
tHC Time between current-limit hiccup burst 94 ms
tD Switch voltage dead time 2 ns
TSD Thermal shutdown temperature Shutdown temperature 165 °C
Recovery temperature 148 °C
(1) Deviation is with respect to VIN =12 V, IOUT = 1 A.
(2) In dropout the switching frequency drops to increase the effective duty cycle. The lowest frequency is clamped at approximately: ƒMIN = 1 / (tON-MAX + tOFF-MIN). DMAX = tON-MAX /(tON-MAX + tOFF-MIN).