ZHCSKH1A November   2019  – March 2020 TPS7A54

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
    1.     为数字负载供电
  3. 3 说明
    1.     为射频组件供电
  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 Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Voltage Regulation Features
        1. 7.3.1.1 DC Regulation
        2. 7.3.1.2 AC and Transient Response
      2. 7.3.2 System Start-Up Features
        1. 7.3.2.1 Programmable Soft Start (NR/SS Pin)
        2. 7.3.2.2 Internal Sequencing
          1. 7.3.2.2.1 Enable (EN)
          2. 7.3.2.2.2 Undervoltage Lockout (UVLO) Control
          3. 7.3.2.2.3 Active Discharge
        3. 7.3.2.3 Power-Good Output (PG)
      3. 7.3.3 Internal Protection Features
        1. 7.3.3.1 Foldback Current Limit (ICL)
        2. 7.3.3.2 Thermal Protection (Tsd)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Regulation
      2. 7.4.2 Disabled
      3. 7.4.3 Current Limit Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1  Recommended Capacitor Types
        1. 8.1.1.1 Input and Output Capacitor Requirements (CIN and COUT)
        2. 8.1.1.2 Noise-Reduction and Soft-Start Capacitor (CNR/SS)
        3. 8.1.1.3 Feed-Forward Capacitor (CFF)
      2. 8.1.2  Soft Start and Inrush Current
      3. 8.1.3  Optimizing Noise and PSRR
      4. 8.1.4  Charge Pump Noise
      5. 8.1.5  Current Sharing
      6. 8.1.6  Adjustable Operation
      7. 8.1.7  Power-Good Operation
      8. 8.1.8  Undervoltage Lockout (UVLO) Operation
      9. 8.1.9  Dropout Voltage (VDO)
      10. 8.1.10 Device Behavior During Transition From Dropout Into Regulation
      11. 8.1.11 Load Transient Response
      12. 8.1.12 Reverse Current Protection Considerations
      13. 8.1.13 Power Dissipation (PD)
      14. 8.1.14 Estimating Junction Temperature
      15. 8.1.15 TPS7A54EVM Thermal Analysis
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Board Layout
    2. 10.2 Layout Example
  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 operating junction temperature range (TJ = –40°C to +125°C), VIN = 1.4 V or VIN = VOUT(nom) + 0.5 V (whichever is greater), VBIAS = open, VOUT(nom) = 0.8 V(1), OUT connected to 50 Ω to GND, VEN = 1.1 V, CIN = 10 µF, COUT = 47 µF, CNR/SS = 0 nF, CFF = 0 nF, and PG pin pulled up toVIN with 100 kΩ, unless otherwise noted; typical values are at TJ = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VFB Feedback voltage 0.8 V
VNR/SS NR/SS pin voltage 0.8 V
VUVLO+(IN) Rising input supply UVLO with BIAS VIN rising with VBIAS = 3 V 1.02 1.085 V
VUVLO-(IN) Falling input supply UVLO with BIAS VIN falling with VBIAS = 3 V 0.55 0.7 V
VUVLO+(IN) Rising input supply UVLO without BIAS VIN rising 1.31 1.39 V
VUVLO-(IN) Falling input supply UVLO without BIAS VIN falling 0.65 1.057 V
VUVLO+(BIAS) Rising bias supply UVLO VBIAS rising, VIN = 1.1 V 2.83 2.9 V
VUVLO-(BIAS) Falling bias supply UVLO VBIAS falling, VIN = 1.1 V 2.45 2.54 V
VOUT Output voltage range 0.8 5.1 V
Output voltage accuracy 1.4 V ≤ VIN ≤ 6.5 V,
0.8 V ≤ VOUT ≤ 5.1 V,
5 mA ≤ IOUT ≤ 4 A		 -0.75 0.75 %
VIN =1.1 V,
5 mA ≤ IOUT ≤ 4 A,
3 V ≤ VBIAS ≤ 6.5 V		 -0.5 0.5
DVOUT/ΔVIN Line regulation IOUT = 5 mA, 1.4 V ≤ VIN ≤ 6.5 V 0.03 mV/V
DVOUT/ΔVIN Load regulation 5 mA ≤ IOUT ≤ 4 A,
3 V ≤ VBIAS ≤ 6.5 V, VIN = 1.1 V		 0.07 mV/A
5 mA ≤ IOUT ≤ 4 A 0.012
VOS Error amplifier offset voltage VIN = 1.4V, IOUT = 5mA;
-40℃ ≤ TJ ≤ +125℃		 -2.5 2.5 mV
VDO Dropout voltage VIN = 1.4 V, IOUT = 4 A,
VFB = 0.8 V – 3%		 140 235 mV
VIN = 5.5 V, IOUT = 4 A,
VFB = 0.8 V – 3%		 250 415
VIN = 5.7 V, IOUT = 4 A,
VFB = 0.8 V – 3%		 330 565
VIN = 1.1 V,
3.0 V ≤ VBIAS ≤ 6.5 V, IOUT = 4 A,
VFB = 0.8 V – 3%		 85 175
ILIM Output current limit VOUT forced at 0.9 × VOUT(nom),
VIN = VOUT(nom) + 0.4 V		 4.6 5.2 5.9 A
ISC Short-circuit current limit RLOAD = 20 mΩ 2 A
IGND GND pin current VIN = 6.5 V, IOUT = 5 mA 2.8 4 mA
VIN = 1.4 V, IOUT = 4 A 4.8 6
Shutdown, PG = open, VIN = 6.5 V,
VEN = 0.5 V		 25 µA
IEN EN pin current VIN = 6.5 V,
VEN = 0 V and 6.5 V		 0.5 µA
IBIAS BIAS pin current VIN = 1.1 V, VBIAS = 6.5 V,
VOUT(nom) = 0.8 V, IOUT = 4 A		 2.3 3.5 mA
VIL(EN) EN pin low-level input voltage (disable device) 0 0.5 V
VIH(EN) EN pin high-level input voltage (enable device) 1.1 6.5 V
VIT-(PG) Falling PG pin threshold For falling VOUT 82% × VOUT 88.3% × VOUT 93% × VOUT V
VIT+(PG) Rising PG pin threshold For rising VOUT 84% × VOUT 89.3% × VOUT 95% × VOUT V
VOL(PG) PG pin low-level output voltage VOUT < VIT(PG),
IPG = –1 mA (current into device)		 0.4 V
Ilkg(PG) PG pin leakage current VOUT > VIT(PG), VPG = 6.5 V 1 µA
INR/SS NR/SS pin charging current VNR/SS = GND, VIN = 6.5 V 4 6.2 9 µA
IFB FB pin leakage current VIN = 6.5 V 100 nA
RNR NR resistor value 250 kΩ
PSRR Power-supply rejection ratio VIN – VOUT = 0.5 V, VOUT = 0.8 V,
VBIAS = 5 V, IOUT = 4 A,
CNR/SS = 100 nF, CFF = 10 nF,
COUT = 47 µF || 10 µF || 10 µF,
f = 10 kHz		 42 dB
VIN – VOUT = 0.5 V, VOUT = 0.8 V,
VBIAS = 5 V, IOUT = 4 A,
CNR/SS = 100 nF, CFF = 10 nF,
COUT = 47 µF || 10 µF || 10 µF,
f = 500 kHz		 39
Vn Output noise voltage Bandwidth = 10 Hz to 100 kHz,
VIN = 1.1 V, VOUT = 0.8 V,
VBIAS = 5 V, IOUT = 4 A,
CNR/SS = 100 nF, CFF = 10 nF,
COUT = 47 µF || 10 µF || 10 µF		 4.4 µVRMS
Bandwidth = 10 Hz to 100 kHz,
VOUT = 5 V, IOUT = 4 A,
CNR/SS = 100 nF, CFF = 10 nF,
COUT = 47 µF || 10 µF || 10 µF		 8.4
Tsd+ Thermal shutdown temperature increasing Shutdown, temperature increasing 160 °C
Tsd- Thermal shutdown temperature decreasing Reset, temperature decreasing 140 °C
(1) VOUT(nom) is the calculated VOUT target value from the ANY-OUT in a fixed configuration. In an adjustable configuration, VOUT(nom) is the expected VOUT value set by the external feedback resistors.
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