ZHCSGX8E march   2017  – june 2023 TPS61253A , TPS61253E

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 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 Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Start-up
      2. 8.3.2 Enable and Disable
      3. 8.3.3 Undervoltage Lockout (UVLO)
      4. 8.3.4 Current Limit Operation
      5. 8.3.5 Load Disconnection
      6. 8.3.6 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Auto PFM Mode
      2. 8.4.2 Forced PWM Mode
      3. 8.4.3 Ultrasonic Mode
      4. 8.4.4 Pass-Through Mode
  10. 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 Custom Design With WEBENCH® Tools
        2. 9.2.2.2 Inductor Selection
        3. 9.2.2.3 Output Capacitor
        4. 9.2.2.4 Input Capacitor
        5. 9.2.2.5 Checking Loop Stability
        6. 9.2.2.6 Application Curves
      3. 9.2.3 System Examples
  11.   Power Supply Recommendations
  12. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  13. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 第三方产品免责声明
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 接收文档更新通知
    4. 11.4 支持资源
    5. 11.5 Trademarks
    6. 11.6 静电放电警告
    7. 11.7 术语表
  14.   Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7.5 Electrical Characteristics

For TPS61253A, VIN = 2.3 V to 4.85 V , VOUT = 5 V , TJ = –40°C to 125°C ; Typical values are at VIN = 3.6 V , TJ = 25°C, unless otherwise noted.

For TPS61253E, VIN = 2.6 V to 4.85 V , VOUT = 5.25 V , TJ = –40°C to 125°C ; Typical values are at VIN = 3.6 V , TJ = 25°C, unless otherwise noted.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
VIN_UVLO Input voltage under voltage lockout (UVLO) threshold VIN rising, TPS61253A 2.2 2.3 V
VIN falling, TPS61253A 2.1 2.2 V
Input voltage under voltage lockout (UVLO) threshold (E version) VIN rising, TPS61253E 2.4 2.5 2.6 V
VIN falling, TPS61253E 2.3 2.4 2.5 V
IQ Quiescent current into VIN pin VIN = 3.6 V, VOUT = 5V , EN = VIN Device not switching 42 50 µA
Quiescent current into VOUT pin VIN = 3.6 V, VOUT = 5V , EN = VIN Device not switching 6.6 12 µA
ISD Shutdown current EN = GND , VIN = 2.3 V to 5.5 V, –40 °C ≤ TJ ≤ 85°C 0.05 1.3 µA
OUTPUT VOLTAGE
VOUT PWM Operation 2.3 V ≤ VIN ≤ 4.85V, IOUT = 0mA, PWM operation. Open Loop. TPS61253A 4.9 5 5.1 V
PWM Operation 2.6 V ≤ VIN ≤ 4.85V, IOUT = 0mA, PWM operation. Open Loop. TPS61253E 5.145 5.25 5.355 V
PFM Operation Auto PFM Mode 100.8 %VOUT
Ultrasonic Operation Ultrasonic Mode 101.6 %VOUT
RDIS output discharge resistor VOUT = 5 V, TPS612532A 350 Ω
POWER SWITCHES
RDSON Low-side FET on resistance 35 55 mΩ
High-side FET on resistance 60 80 mΩ
CURRENT LIMIT
ILIM_SW Switching valley current limit at Auto PFM / Ultrasonic Mode TPS61253A 3.4 4 4.6 A
Switching valley current limit at Forced PWM Mode TPS61253A 3.35 3.95 4.55 A
Switching valley current limit at Auto PFM / Ultrasonic Mode TPS61253E 3.9 4.5 5.1 A
Switching valley current limit at Forced PWM Mode TPS61253E 3.85 4.45 5.05 A
ILIM_DC DC startup current limit TPS61253A, TPS61253E 1 1.5 A
EN AND MODE LOGIC
VEN_H EN logic high threshold TPS61253A 1.2 V
TPS61253E 0.9 V
VEN_L EN logic low threshold TPS61253A 0.4 V
TPS61253E 0.36 V
REN EN pull-down resistor 930 kΩ
VMODE_H Mode logic high threshold 1.2 V
VMODE_L Mode logic low threshold 0.4 V
VMODE_F Mode pin floating voltage 0.75 0.8 0.85 V
IMODE_UP Pull up current 1 µA
IMODE_DOWN Pull down current 1 µA
PROTECTION
TSD_R Thermal shutdown rising threshold 150 ºC
TSD_HYS Thermal protection hysteresis 20 ºC