ZHCSSB2G march   2008  – june 2023 TPS799-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 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Internal Current Limit
      2. 7.3.2 Shutdown
      3. 7.3.3 Dropout Voltage
      4. 7.3.4 Start-Up
      5. 7.3.5 Undervoltage Lockout (UVLO)
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    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 Requirements
        2. 8.2.2.2 Feedback Capacitor Requirements (TPS79901-Q1 Only)
        3. 8.2.2.3 Output Noise
        4. 8.2.2.4 Transient Response
        5. 8.2.2.5 Minimum Load
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Board Layout Recommendations to Improve PSRR and Noise Performance
        2. 8.4.1.2 Thermal Consideration
        3. 8.4.1.3 Power Dissipation
        4. 8.4.1.4 Package Mounting
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    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

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6.5 Electrical Characteristics

over operating temperature range (TJ = –40°C to 125°C), VIN = VOUT(TYP) + 0.3 V or 2.7 V, whichever is greater; IOUT = 1 mA, VEN = VIN, COUT = 2.2 μF, and CNR = 0.01 μF (unless otherwise noted); for TPS79901-Q1, VOUT = 3 V; typical values are at TJ = 25°C
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
VINInput voltage range(1)2.76.5V
VFBInternal reference (TPS79901-Q1)1.1691.1931.217V
VOUTOutput voltage range (TPS79901-Q1)VFB6.5 – VDOV
VOUTOutput accuracyNominal, TJ = 25°C–1%1%
Output accuracy(1)Over VIN, IOUT, temperature,
VOUT + 0.3 V ≤ VIN ≤ 6.5 V,
500 μA ≤ IOUT ≤ 200 mA		–2%±1%2%
ΔVOUT%/ ΔVINLine regulation(1)VOUT(NOM) + 0.3 V ≤ VIN ≤ 6.5 V0.02%/V
ΔVOUT%/ ΔIOUTLoad regulation500 μA ≤ IOUT ≤ 200 mA0.002%/mA
VDODropout voltage(2)
(VIN = VOUT(NOM) – 0.1 V)		VOUT < 3.3 VIOUT = 200 mA100175mV
VOUT ≥ 3.3 V90160
ICLOutput current limitVOUT = 0.9 × VOUT(NOM)200400600mA
IGNDGround pin current500 μA ≤ IOUT ≤ 200 mA4060μA
ISHDNShutdown current (IGND)VEN ≤ 0.4 V, 2.7 V ≤ VIN ≤ 6.5 V0.151μA
IFBFeedback pin current (TPS79901-Q1)–0.50.5μA
PSRRPower-supply rejection ratioVIN = 3.85 V, VOUT = 2.85 V, CNR = 0.01 μF, IOUT = 100 mAf = 100 Hz70dB
f = 1 kHz66
f = 10 kHz51
f = 100 kHz38
VNOutput noise voltage
BW = 10 Hz to 100 kHz, VOUT = 2.8 V		CNR = 0.01 μF10.5 VOUTμVRMS
CNR = none94 VOUT
TSTRStart-up timeVOUT = 2.85 V, RL = 14 Ω, COUT = 2.2 μFCNR = 0.001 μF45μs
CNR = 0.047 μF45
CNR = 0.01 μF50
CNR = none50
VEN(HI)Enable high (enabled)1.2VINV
VEN(LO)Enable low (shutdown)00.4V
IEN(HI)Enable pin current, enabledVEN = VIN = 6.5 V0.031μA
TSDThermal shutdown temperatureShutdown, temperature increasing165°C
Reset, temperature decreasing145
TJOperating junction temperature–40125°C
VUVLOUndervoltage lockoutVIN rising1.92.22.65V
VUVLO,hysHysteresisVIN falling70mV
(1) Minimum VIN = VOUT + VDO or 2.7 V, whichever is greater.
(2) VDO is not measured for devices with VOUT(NOM) < 2.8 V because minimum VIN = 2.7 V.