JAJSF35D
September 2017 – October 2019
TPS50601A-SP
PRODUCTION DATA.
1
特長
VIN=PVIN=5Vでの効率
2
アプリケーション
3
概要
4
改訂履歴
5
概要(続き)
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
VIN and Power VIN Pins (VIN and PVIN)
8.3.2
Voltage Reference
8.3.3
Adjusting the Output Voltage
8.3.4
Safe Start-Up Into Prebiased Outputs
8.3.5
Error Amplifier
8.3.6
Slope Compensation
8.3.7
Enable and Adjust UVLO
8.3.8
Adjustable Switching Frequency and Synchronization (SYNC)
8.3.9
Slow Start (SS/TR)
8.3.10
Power Good (PWRGD)
8.3.11
Sequencing (SS/TR)
8.3.12
Output Overvoltage Protection (OVP)
8.3.13
Overcurrent Protection
8.3.13.1
High-Side MOSFET Overcurrent Protection
8.3.13.2
Low-Side MOSFET Overcurrent Protection
8.3.14
Thermal Shutdown
8.3.15
Turn-On Behavior
8.3.16
Small Signal Model for Frequency Compensation
8.4
Device Functional Modes
8.4.1
Fixed-Frequency PWM Control
8.4.2
Continuous Current Mode (CCM) Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Operating Frequency
9.2.2.2
Output Inductor Selection
9.2.2.3
Output Capacitor Selection
9.2.2.4
Slow Start Capacitor Selection
9.2.2.5
Undervoltage Lockout (UVLO) Set Point
9.2.2.6
Output Voltage Feedback Resistor Selection
9.2.2.7
Compensation Component Selection
9.2.3
Parallel Operation
9.2.4
Application Curve
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
デバイスおよびドキュメントのサポート
12.1
ドキュメントのサポート
12.1.1
関連資料
12.2
ドキュメントの更新通知を受け取る方法
12.3
コミュニティ・リソース
12.4
商標
12.5
静電気放電に関する注意事項
12.6
Glossary
13
メカニカル、パッケージ、および注文情報
7.6
Typical Characteristics
Figure 1.
Efficiency at VIN = PVIN = 5 V
Figure 3.
Internal Oscillator Frequency vs Temperature
Figure 5.
EN Pin Hysteresis Current vs Temperature
Figure 7.
EN Pin UVLO Threshold vs Temperature
Figure 9.
Slow Start Charge Current vs Temperature
Figure 11.
High-Side Current Limit Threshold vs Temperature
Figure 13.
High-Side R
DS(ON)
vs Temperature
Figure 2.
Voltage Reference vs Temperature
Figure 4.
Shutdown Quiescent Current vs Temperature
Figure 6.
EN Pin Pull-Up Current vs Temperature
Figure 8.
Non-Switching Operating Quiescent Current (VIN) vs Temperature
Figure 10.
(SS-V
SENSE
) Offset vs Temperature
Figure 12.
Low-Side R
DS(ON)
vs Temperature
VIN = 5 V
VOUT = 2.5 V
ƒSW = 500 kHz
Figure 14.
Current Sharing vs Load Current