ZHCSJN7J October   2002  – May 2019 TPS795

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      TPS79530 波纹抑制与频率
      2.      TPS79530 与频率
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Shutdown
      2. 7.3.2 Start-Up
      3. 7.3.3 Undervoltage Lockout (UVLO)
      4. 7.3.4 Regulator Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Disabled
  8. 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 Output Noise
        3. 8.2.2.3 Dropout Voltage
        4. 8.2.2.4 Programming the TPS79501 Adjustable LDO Regulator
      3. 8.2.3 Application Curves
    3. 8.3 What to Do and What Not to Do
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Board Layout Recommendation to Improve PSRR and Noise Performance
      2. 10.1.2 Regulator Mounting
      3. 10.1.3 Thermal Considerations
      4. 10.1.4 Estimating Junction Temperature
    2. 10.2 Layout Examples
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 开发支持
        1. 11.1.1.1 评估模块
        2. 11.1.1.2 Spice 模型
      2. 11.1.2 器件命名规则
    2. 11.2 文档支持
      1. 11.2.1 相关文档
    3. 11.3 接收文档更新通知
    4. 11.4 社区资源
    5. 11.5 商标
    6. 11.6 静电放电警告
    7. 11.7 Glossary
  12. 12机械、封装和可订购信息

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

over recommended operating temperature range (TJ = –40°C to 125°C), VEN = VIN, VIN = VOUT(nom) + 1 V(1), IOUT = 1 mA, COUT = 10 µF, and CNR = 0.01 µF (unless otherwise noted); typical values are at 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VFB Internal reference (TPS79501) 1.200 1.225 1.25 V
Output voltage range TPS79501 1.225 5.5 – VDO V
Accuracy TPS79501(1) 0 µA ≤ IOUT ≤ 500 mA,
VOUT(nom) + 1 V ≤ VIN ≤ 5.5 V(1) 		0.98VOUT(nom) VOUT(nom) 1.02VOUT(nom) V
Fixed VOUT < 5 V 0 µA ≤ IOUT ≤ 500 mA,
VOUT(nom) + 1 V ≤ VIN ≤ 5.5 V(1) 		–2% 2%
ΔVO(ΔVI) Line regulation(1) VOUT + 1 V ≤ VIN ≤ 5.5 V 0.05 0.12 %/V
ΔVO(ΔIO) Load regulation 0 µA ≤ IOUT ≤ 500 mA 3 mV
VDO Dropout voltage(2)
(VIN = VOUT(nom) – 0.1 V)		 TPS79530 IOUT = 500 mA 110 170 mV
TPS79533 IOUT = 500 mA 105 160 mV
ICL Output current limit VOUT = 0 V 2.4 2.8 4.2 A
IGND Ground pin current 0 µA ≤ IOUT ≤ 500 mA 265 385 µA
ISHDN Shutdown current(3) VEN = 0 V, 2.7 V ≤ VIN ≤ 5.5 V 0.07 1 µA
IFB Feedback pin current VFB = 1.225 V 1 µA
PSRR Power-supply rejection ratio (TPS79530) f = 100 Hz, IOUT = 10 mA 59 dB
f = 100 Hz, IOUT = 500 mA 58 dB
f = 10 kHz, IOUT = 500 mA 50 dB
f = 100 kHz, IOUT = 500 mA 39 dB
Vn Output noise voltage (TPS79530) BW = 100 Hz to
     100 kHz,
IOUT = 500 mA		 CNR = 0.001 µF 46 µVRMS
CNR = 0.0047 µF 41 µVRMS
CNR = 0.01 µF 35 µVRMS
CNR = 0.1 µF 33 µVRMS
Start-up time (TPS79530) RL = 6 Ω, COUT = 1 µF CNR = 0.001 µF 50 µs
CNR = 0.0047 µF 75 µs
CNR = 0.01 µF 110 µs
VEN(HI) Enable high (enabled) 2.7 V ≤ VIN ≤ 5.5 V 1.7 VIN V
VEN(LO) Enable low (shutdown) 2.7 V ≤ VIN ≤ 5.5 V 0.7 V
IEN(HI) Enable pin current, enabled VEN = 0 V –1 1 µA
UVLO Undervoltage lockout VCC rising 2.25 2.65 V
UVLO hysteresis 100 mV
Tsd Thermal shutdown temperature Shutdown, temperature increasing 165 °C
Reset, temperature decreasing 140 °C
(1) Tolerance of external resistors not included in this specification.
(2) Dropout is not measured for the TPS79501 and TPS79525 because minimum VIN = 2.7 V.
(3) For adjustable version, this applies only after VIN is applied; then VEN transitions high to low.
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