ZHCSME0B December   2020  – November 2022 TPS7A43

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 MID_OUT Voltage Selection
      2. 7.3.2 Precision Enable
      3. 7.3.3 Dropout Voltage
      4. 7.3.4 Current Limit
      5. 7.3.5 Thermal Shutdown
      6. 7.3.6 Power Good
    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 MID_OUT Voltage Setting
      2. 8.1.2 Adjustable Device Feedback Resistors
      3. 8.1.3 Recommended Capacitor Types
      4. 8.1.4 Input and Output Capacitor Requirements
      5. 8.1.5 Power Dissipation (PD)
      6. 8.1.6 Estimating Junction Temperature
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    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 Development Support
        1. 9.1.1.1 Evaluation Modules
        2. 9.1.1.2 Spice Models
      2. 9.1.2 Device Nomenclature
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 接收文档更新通知
    4. 9.4 支持资源
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 术语表
  10. 10Mechanical, Packaging, and Orderable Information

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6.5 Electrical Characteristics

specified at TJ = –40°C to +125°C, VIN = VOUT(nom) + 1.5V or 4V, whichever is greater, FB tied to OUT (adjustable version only), IOUT = 1 mA, IMID_OUT = 0mA, VEN = 2 V, VMVSEL1 = 0.9 V, VMVSEL2 = 0.9 V, CIN = 1 μF, CMID_OUT = 4.7 μF, and COUT = 1 μF (unless otherwise noted); typical values are at TJ = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ΔVOUT Output voltage accuracy Adjustable version, VOUT = VFB 1.23 1.24 1.25 V
ΔVOUT Fixed output version, TJ = 25℃ –0.5 0.5 %
Fixed output version –0.75 0.75
VFB Feedback voltage Adjustable version only 1.24 V
ΔVOUT(ΔVIN) Line regulation(1) (VOUT(nom) + 1 V or 4 V) ≤ VIN ≤ 85 V –0.05 0.05 %
VMID_OUT(nom) + 1.5 V ≤ VIN ≤ 85 V –0.05 0.05
ΔVOUT(ΔIOUT) Load regulation 1 mA ≤ IOUT ≤ 50 mA,
IMID_OUT = 0 mA		 –0.15 0.10 %
ΔVMID_OUT MID output voltage accuracy VIN = VMID_OUT + 1.5 V VMVSEL1 ≤ VMVSEL1(LOW),
VMVSEL2 ≤ VMVSEL2(LOW)		 14.4 15 15.6 V
VMVSEL1 ≤ VMVSEL1(LOW)  
or VMVSEL1 ≥ VMVSEL1(HIGH),
VMVSEL2 ≥ VMVSEL2(HIGH)		 11.5 12 12.5
VMVSEL1 ≥ VMVSEL1(HIGH),
VMVSEL2 ≤ VMVSEL2(LOW)		 9.6 10 10.4
ΔVMID_OUT(ΔVIN) Line regulation of MID output(1) (VMID_OUT(nom)) + 1.5 V ≤ VIN ≤ 85 V,
IMID_OUT = 1 mA, IOUT = 0 mA		 –0.1 0.1 %
ΔVMID_OUT(ΔIOUT) Load regulation of MID output 1 mA ≤ IMID_OUT ≤ 50 mA
VIN = VMID_OUT + 1.5 V
IOUT = 0 mA		 –0.2 0.1 %
VDO(OUT) Dropout voltage of VIN to VOUT(2) IOUT = 50 mA 800 mV
VDO(OUT) Dropout voltage of VMID_OUT to VOUT(2) IOUT = 50 mA 200 mV
VDO(MID_OUT) Dropout voltage of VIN to VMID_OUT(3) IMID_OUT = 50 mA 600 mV
ICL(OUT) Output current limit VOUT = 0.9 × VOUT(nom) 100 125 145 mA
ICL(MID_OUT) MID output current limit VOUT = 0.9 × VMID_OUT(nom),
VIN = VMID_OUT + 1.5 V		 118 145 165 mA
IGND Ground pin current IOUT = IMID_OUT = 0 mA,
VIN = VMID_OUT + 1.5 V		 TJ = 25°C 5.5 7 µA
TJ = –40°C to +125°C 9
IOUT = 50 mA,
VIN = VMID_OUT + 1.5 V		 185
ISHUTDOWN Shutdown current VEN ≤ VEN(LOW) ,
VIN = VMID_OUT(nom) + 1.5 V 
IOUT = IMID_OUT = 0 mA		 TJ = –40°C to +85°C 710 1600 nA
TJ = –40°C to +125°C 2100 nA
ISHUTDOWN Shutdown current VEN ≤ VEN(LOW) ,
 VIN =85 V
IOUT = IMID_OUT = 0 mA		 TJ = –40°C to +85°C 710 1900 nA
TJ = –40°C to +125°C 2500
IFB FB pin current 10 nA
IMVSEL1 MVSEL1 pin current VMVSEL1 = 18 V 10 nA
IMVSEL2 MVSEL2 pin current VMVSEL2 = 18 V 10 nA
IEN EN pin current VEN = 18 V 10 nA
VMVSEL1(HIGH) MVSEL1 pin high-level input voltage 0.9 V
VMVSEL1(LOW) MVSEL1 pin low-level input voltage 0.3 V
VMVSEL2(HIGH) MVSEL2 pin high-level input voltage 0.9 V
VMVSEL2(LOW) MVSEL2 pin low-level input voltage 0.3 V
VEN(HI) Enable rising threshold Device enabled 1.15 1.24 1.35 V
VEN(LOW) Enable falling threshold Device disabled 1.11 1.19 1.28 V
VEN(HYST) Enable pin hysteresis 50 mV
VIT(PG,RISING) PG pin threshold rising RPULLUP = 10 kΩ, VOUT rising,
VIN ≥ VUVLO(RISING)		 88 93 96.5 %VOUT
VHYS(PG) PG pin hysteresis RPULLUP = 10 kΩ, VOUT falling,
VIN ≥ VUVLO(RISING)		 3
VIT(PG,FALLING) PG pin threshold falling RPULLUP = 10 kΩ, VOUT falling,
VIN ≥ VUVLO(RISING)		 84 90 94.5
VOL(PG) PG pin low level output voltage VOUT < VIT(PG,FALLING), IPG-SINK = 500 µA 0.4 V
ILKG(PG) PG pin leakage current VOUT > VIT(PG,RISING), VPG = 18 V 5 130 nA
PSRR(OUT) Power-supply rejection ratio of OUT rail  IOUT = 20 mA f = 10 Hz 76 dB
f = 100 Hz 67
f = 1 kHz 82
f = 100 kHz 73
PSRR(MID_OUT) Power-supply rejection ratio of MID_OUT rail  IMID_OUT = 20 mA f = 10 Hz 61
f = 100 Hz 64
f = 1 kHz 55
f = 100 kHz 47
Vn Output noise voltage BW = 10 Hz to 100 kHz, VOUT = 1.24 V 124 μVRMS
TSD(shutdown) Thermal shutdown temperature Shutdown, temperature increasing 170 °C
(1) Line regulation from Input of the LDO to the final output of the LDO.
(2) VDO is measured with VIN = 0.95 × VOUT(nom) for fixed output voltage versions. VDO is not measured for fixed output voltage versions when VOUT ≤ 3.1 V. For the adjustable output device, VDO is measured with VFB = 0.95 × VFB(nom).
(3) VDO(MID_OUT) is measured with VIN = 0.95 × VMID_OUT(nom) for Mid output voltages.