ZHCSK49E August   2019  – September 2022 TPS7A24

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Output Enable
      2. 7.3.2 Dropout Voltage
      3. 7.3.3 Current Limit
      4. 7.3.4 Undervoltage Lockout (UVLO)
      5. 7.3.5 Thermal Shutdown
      6. 7.3.6 Active Overshoot Pulldown Circuitry
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Functional Mode Comparison
      2. 7.4.2 Normal Operation
      3. 7.4.3 Dropout Operation
      4. 7.4.4 Disabled
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjustable Device Feedback Resistors
      2. 8.1.2 Recommended Capacitor Types
      3. 8.1.3 Input and Output Capacitor Requirements
      4. 8.1.4 Reverse Current
      5. 8.1.5 Feed-Forward Capacitor (CFF)
      6. 8.1.6 Power Dissipation (PD)
      7. 8.1.7 Estimating Junction Temperature
      8. 8.1.8 Special Consideration for Line Transients
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Transient Response
        2. 8.2.2.2 Selecting Feedback Divider Resistors
        3. 8.2.2.3 Thermal Dissipation
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Examples
  9. 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 Electrostatic Discharge Caution
    6. 9.6 术语表
  10. 10Mechanical, Packaging, and Orderable Information

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订购信息

6.5 Electrical Characteristics

specified at TJ = –40°C to + 125°C, VIN = VOUT(nom) + 0.5 V or VIN = 2.4 V (whichever is greater), FB tied to OUT, IOUT = 1 mA, VEN = 2 V, and CIN = 1 μF, COUT = 2.2 μF ceramic (unless otherwise noted); typical values are at TJ = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOUT Output voltage accuracy Adjustable version, VOUT = VFB 1.22 1.24 1.26 V
Fixed output versions, TJ = -40℃ to 125℃ –1.25 1.25 %
VOUT Output voltage accuracy Fixed output versions, TJ = 25 ℃ –0.5 0.5 %
VFB Feedback voltage Adjustable version only 1.24 V
ΔVOUT(ΔVIN) Line regulation(1) (VOUT(nom) + 0.5 V or 2.4 V) ≤ VIN ≤ 18 V –0.25 0.25 %
ΔVOUT(ΔIOUT) Load regulation 1 mA ≤ IOUT ≤ 200 mA –0.5 0.5 %
IGND Ground pin current IOUT = 0 mA 2 4.5 µA
IOUT = 1 mA 15
ISHUTDOWN Shutdown current VEN ≤ 0.4 V, VIN = 2.4 V, Iout = 0 mA 325 650 nA
ICL Output current limit VOUT = 0.9 × VOUT(nom) 250 410 620 mA
IFB FB pin current 10 nA
VDO Dropout voltage(2) IOUT = 100 mA 110 160 mV
IOUT = 200 mA 160 250
PSRR Power-supply rejection ratio f = 10 Hz 75 dB
f = 100 Hz 70
f = 1 kHz 62
Vn Output noise voltage BW = 10 Hz to 100 kHz, VOUT = 1.24 V 300 μVRMS
VUVLO(RISING) UVLO threshold rising VIN rising 1.95 2.15 2.35 V
VUVLO(HYS) UVLO hysteresis 70 mV
VUVLO(FALLING) UVLO threshold falling VIN falling 1.85 2.09 2.25 V
VEN(HI) Enable pin high-level input voltage Device enabled 0.9 V
VEN(LOW) Enable pin low-level input voltage Device disabled 0.4 V
IEN EN pin current VEN = 18 V 10 nA
TSD(shutdown) Thermal shutdown temperature Shutdown, temperature increasing 165 °C
TSD(reset) Thermal shutdown reset temperature Reset, temperature decreasing 145 °C
(1) Vout(nom) + 0.5 V or 2.4 V (whichever is greater).
(2) VDO is measured with VIN = 0.97 × VOUT(nom) for fixed output voltage versions. VDO is not measured for fixed output voltage versions when VOUT ≤ 2.5 V. For the adjustable output device, VDO is measured with VFB = 0.97 × VFB(nom).