ZHCSOZ7A june   2022  – august 2023 TPS7B4255-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Tracker Output Voltage (VOUT)
        1. 7.3.1.1 Output Voltage Equal to the Reference Voltage
        2. 7.3.1.2 Output Voltage Less Than the Reference Voltage
      2. 7.3.2 Reverse Current Protection
      3. 7.3.3 Undervoltage Lockout
      4. 7.3.4 Thermal Protection
      5. 7.3.5 Current Limit
      6. 7.3.6 Output Short to Battery
      7. 7.3.7 Tracking Regulator With an Enable Circuit
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Operation With VIN < 3 V
      4. 7.4.4 Disable With ADJ/EN Control
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Dropout Voltage
      2. 8.1.2 Reverse Current
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input and Output Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Package Mounting
        2. 8.4.1.2 Board Layout Recommendations to Improve PSRR and Noise Performance
        3. 8.4.1.3 Power Dissipation and Thermal Considerations
        4. 8.4.1.4 Thermal Performance Versus Copper Area
      2. 8.4.2 Layout Examples
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
    2. 9.2 接收文档更新通知
    3. 9.3 支持资源
    4. 9.4 Trademarks
    5. 9.5 静电放电警告
    6. 9.6 术语表
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

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

6.5 Electrical Characteristics

specified at TJ = –40°C to +150°C, VIN = 13.5 V,  IOUT = 100 µA, COUT = 1 µF, 1 mΩ ≤ COUT ESR ≤ 3 Ω,  CIN = 1 µF, and VADJ = 5 V (unless otherwise noted); typical values are at TJ = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ΔVOUT Output voltage tracking accuracy VIN = VOUT + 600 mV to 40 V, IOUT = 100 µA to 70 mA –5 5 mV
ΔVOUT(ΔVIN) Line regulation VIN = VOUT + 600 mV to 40 V 0.5 mV
ΔVOUT(ΔIOUT) Load regulation VIN = VOUT + 600 mV, IOUT = 100 µA to 70 mA (1) 0.6 mV
IQ Quiescent current VIN = 5.6 V to 40 V, IOUT = 100 µA, TJ = 25ºC 35 40 µA
VIN = 5.6 V to 40 V, IOUT = 100 µA, -40ºC < TJ < 85ºC 45
VIN = 5.6 V to 40 V, IOUT = 100 µA 50
IGND Ground current VIN = 5.6 V to 40 V, IOUT = 70 mA, TJ = 25ºC 470
VIN = 5.6 V to 40 V, IOUT = 70 mA 550
VDO Dropout voltage IOUT = 70 mA, VADJ ≥ 5 V, VIN = VADJ 500 mV
IOUT = 50 mA, VADJ ≥ 5 V, VIN = VADJ 365
ISHUTDOWN Shutdown supply current (IGND) VADJ/EN = 0 V 3.25 µA
IADJ/EN ADJ/EN pin current 0.3
VUVLO(RISING) Rising input supply UVLO VIN rising 2.6 2.7 2.81 V
VUVLO(FALLING) Falling input supply UVLO VIN falling 2.3 2.4 2.5
VUVLO(HYST) VUVLO(IN) hysteresis 300 mV
VIL Adjustable and enable logic input low level 0.85 V
VIH Adjustable and enable logic input high level 1.75
ICL Output current limit VIN = VOUT + 1 V, VOUT short to 90% x VADJ 75 105 130 mA
PSRR Power-supply ripple rejection VIN - VOUT = 1 V, frequency = 100 Hz, IOUT = 70 mA 80 dB
Vn Output noise voltage VOUT = 3.3 V, IOUT = 1 mA, BW = 10 Hz to 100 kHz, a 5 µVRMS reference is used for this measurement 150 µVRMS
IREV Reverse current at VIN VIN = 0 V, VOUT = 20 V, VADJ = 5 V -0.25 0.25 µA
IREV-N1 Reverse current at negative VIN VIN = –20 V, VOUT = 20 V, VADJ = 5 V -0.5 0.5
IREV-N2 Reverse current at negative VIN VIN = –20 V, VOUT = 0 V, VADJ = 5 V -0.5 0.5
TJ Junction temperature –40 150 °C
TSD(SHUTDOWN) Junction shutdown temperature 175 °C
TSD(HYST) Hysteresis of thermal shutdown 15 °C
(1) Power dissipation is limited to 2 W for device production testing purposes. The power dissipation can be higher during normal operation. Please see the thermal dissipation section for more information on how much power the device can dissipate while maintaining a junction temperature below 150℃.
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