ZHCSG07 February   2017 TPS7A4701-EP

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  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 Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Internal Current Limit (ICL)
      2. 7.3.2 Enable (EN) And Under-Voltage Lockout (UVLO)
      3. 7.3.3 Soft-Start and Inrush Current
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 ANY-OUT Programmable Output Voltage
      2. 7.5.2 Adjustable Operation
  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 Capacitor Recommendations
          1. 8.2.2.1.1 Input and Output Capacitor Requirements
          2. 8.2.2.1.2 Noise Reduction Capacitor (CNR)
        2. 8.2.2.2 Dropout Voltage (VDO)
        3. 8.2.2.3 Output Voltage Accuracy
        4. 8.2.2.4 Startup
        5. 8.2.2.5 AC Performance
          1. 8.2.2.5.1 Power-Supply Rejection Ratio (PSRR)
          2. 8.2.2.5.2 Load Step Transient Response
          3. 8.2.2.5.3 Noise
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Power Dissipation (PD)
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Protection
    4. 10.4 Estimating Junction Temperature
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 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 Specifications

6.1 Absolute Maximum Ratings

Over junction temperature range, unless otherwise noted(1)
MIN MAX UNIT
Voltage(2) IN pin to GND pin –0.4 36 V
EN pin to GND pin –0.4 36 V
EN pin to IN pin –36 0.4 V
OUT pin to GND pin –0.4 36 V
NR pin to GND pin –0.4 36 V
SENSE/FB pin to GND pin –0.4 36 V
0P1V pin to GND pin –0.4 36 V
0P2V pin to GND pin –0.4 36 V
0P4V pin to GND pin –0.4 36 V
0P8V pin to GND pin –0.4 36 V
1P6V pin to GND pin –0.4 36 V
3P2V pin to GND pin –0.4 36 V
6P4V1 pin to GND pin –0.4 36 V
6P4V2 pin to GND pin –0.4 36 V
Current Peak output Internally limited
TJ Operating virtual junction –55 150 °C
Tstg Storage temperature –65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltages are with respect to network ground terminal.

6.2 ESD Ratings

MIN MAX UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) –2500 2500 V
Charged-device model (CDM), per JEDEC specification JESD22-C101, all pins(2) –500 500
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over junction temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VI 3.0 35 V
VO 1.4 34 V
VEN 0 VIN V
IO 0 1 A

6.4 Thermal Information

THERMAL METRIC(1) TPS7A4701-EP UNIT
RGW
20 PINS
RθJA Junction-to-ambient thermal resistance 32.5 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 27 °C/W
RθJB Junction-to-board thermal resistance 11.9 °C/W
ψJT Junction-to-top characterization parameter 0.3 °C/W
ψJB Junction-to-board characterization parameter 11.9 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 1.7 °C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

At –55°C ≤ TJ ≤ 125°C; VI = VO(nom) + 1 V or VI = 3 V (whichever is greater); VEN = VI; IO = 0 mA; CIN = 10 µF; COUT = 10 µF; CNR = 10 nF; SENSE/FB tied to OUT; and 0P1V, 0P2V, 0P4V, 0P8V, 1P6V, 3P2V, 6P4V1, 6P4V2 pins OPEN, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VI Input voltage range 3 35 V
VUVLO Under-voltage lockout threshold VI rising 2.67 V
VI falling 2.5
V(REF) Reference voltage V(REF) = V(FB) 1.4 V
VUVLO(HYS) Under-voltage lockout hysteresis 177 mV
VNR Noise reduction pin voltage Using ANY-OUT option VOUT V
Using adjustable option 1.4
VO Output voltage range VI ≥ VO(nom) + 1 V or 3 V (whichever is greater),
COUT = 20 µF		 Using ANY-OUT option 1.4 20.5 V
Using adjustable option 1.4 34
Nominal accuracy TJ = 25°C, COUT = 20 µF –1 1 %VO
Overall accuracy VO(nom) + 1 V ≤ VI ≤ 35 V,
0 mA ≤ IO ≤ 1 A, COUT = 20 µF		 –3.5 3.5
ΔVO(ΔVI) Line regulation VO(nom) + 1 V ≤ VI ≤ 35 V 0.092 %VO
ΔVO(ΔIO) Load regulation 0 mA ≤ IO ≤ 1 A 0.3 %VO
V(DO) Dropout voltage VI = 95% VO(nom), IO = 0.5 A 216 mV
VI = 95% VO(nom), IO = 1 A 307 450
I(CL) Current limit VO = 90% VO(nom) 1 1.26 A
I(GND) Ground pin current IO = 0 mA 0.58 1 mA
IO = 1 A 6.1
I(EN) Enable pin current VEN = VI 0.78 2 µA
VI = VEN = 35 V 0.81 2
I(SHDN) Shutdown supply current VEN = 0.4 V 2.55 8 µA
VEN = 0.4 V, VI = 35 V 3.04 60
V+EN(HI) Enable high-level voltage 2 VI V
V+EN(LO) Enable low-level voltage 0 0.4 V
I(FB) Feedback pin current 350 nA
PSRR Power-supply rejection ratio VI = 16 V, VO(nom) = 15 V, COUT = 50 µF,
IO = 500 mA, CNR = 1 µF, f = 1 kHz		 78 dB
Vn Output noise voltage VI = 3 V, VO(nom) = 1.4 V, COUT = 50 µF,
CNR = 1 µF, BW = 10 Hz to 100 kHz		 4.17 µVRMS
VIN = 6 V, VO(nom) = 5 V, COUT = 50 µF,
CNR = 1 µF, BW = 10 Hz to 100 kHz		 4.67
Tsd Thermal shutdown temperature Shutdown, temperature increasing 170 °C
Reset, temperature decreasing 150
TJ Operating junction temperature –55 125 °C

6.6 Typical Characteristics

At –55°C ≤ TJ ≤ 125°C; VI = VO(nom) + 1 V or VI = 3 V (whichever is greater); VEN = VI; IO = 0 mA; CIN = 10 µF; COUT = 10 µF; CNR = 1 µF; SENSE/FB tied to OUT; and 0P1V, 0P2V, 0P4V, 0P8V, 1P6V, 3P2V, 6P4V1, 6P4V2 pins OPEN, unless otherwise noted.
TPS7A4701-EP G020_SLVSDQ3.gif
IOUT = 500 mA COUT = 50 µF CNR = 1 µF
BWRMSNOISE (10 Hz, 100 kHz)
Figure 1. Noise vs Output Voltage
TPS7A4701-EP D003_SLVSDQ3.gif
Figure 3. Load Regulation
TPS7A4701-EP D005_SLVSDQ3.gif
Figure 5. Enable Voltage Threshold vs Temperature
TPS7A4701-EP D007_SLVSDQ3.gif
Figure 7. Ground Current vs Output Current
TPS7A4701-EP D009_SLVSDQ3.gif
Figure 9. Shutdown Current vs Input Voltage
TPS7A4701-EP G011_SLVSDQ3.gif
IOUT = 1 A COUT = 50 µF VIN = 3 V
VOUT = 1.4 V
Figure 11. Power-Supply Rejection Ratio vs CNR
TPS7A4701-EP G013_SLVSDQ3.gif
CNR = 1 µF COUT = 50 µF VIN = 3 V
VOUT = 1.4 V
Figure 13. Power-Supply Rejection Ratio vs IO
TPS7A4701-EP G015_SLVSDQ3.gif
VOUT = 3.3 V CNR = 1 µF COUT = 50 µF
IOUT = 500 mA
Figure 15. Power-Supply Rejection Ratio vs Dropout
TPS7A4701-EP G017_SLVSDQ3.gif
CNR = 1 µF COUT = 50 µF IOUT = 500 mA
Figure 17. Power-Supply Rejection Ratio vs Output Voltage
TPS7A4701-EP G060_SLVSDQ3.gif
VIN = 5 V VOUT = 3.3 V IOUT = 10 mA to 845 mA
Figure 19. Load Transient
TPS7A4701-EP G062_SLVSDQ3.gif
Startup Time = 65 ms VIN = 6 V VOUT = 5 V
IOUT = 500 mA CIN = 10 µF COUT = 50 µF
Figure 21. Startup
TPS7A4701-EP D002_SLVSDQ3.gif
Figure 2. Line Regulation
TPS7A4701-EP D004_SLVSDQ3.gif
Figure 4. UVLO Threshold vs Temperature
TPS7A4701-EP D006_SLVSDQ3.gif
IOUT = 0 µA
Figure 6. Quiescent Current vs Input Voltage
TPS7A4701-EP D008_SLVSDQ3.gif
Figure 8. Enable Current vs Input Voltage
TPS7A4701-EP D010_SLVSDQ3.gif
VOUT = 90% VOUT(NOM)
Figure 10. Current Limit vs Input Voltage
TPS7A4701-EP G012_SLVSDQ3.gif
IOUT = 0.5 A COUT = 50 µF VIN = 3 V
VOUT = 1.4 V
Figure 12. Power-Supply Rejection Ratio vs CNR
TPS7A4701-EP G014_SLVSDQ3.gif
VOUT = 3.3 V CNR = 1 µF COUT = 50 µF
IOUT = 50 mA
Figure 14. Power-Supply Rejection Ratio vs Dropout
TPS7A4701-EP G016_SLVSDQ3.gif
VOUT = 3.3 V CNR = 1 µF COUT = 50 µF
IOUT = 1 A
Figure 16. Power-Supply Rejection Ratio vs Dropout
TPS7A4701-EP G018_SLVSDQ3.gif
CNR = 1 µF COUT = 50 µF IOUT = 1000 mA
Figure 18. Power-Supply Rejection Ratio vs Output Voltage
TPS7A4701-EP G061_SLVSDQ3.gif
VIN = 5 V to 15 V VOUT = 3.3 V IOUT = 845 mA
Figure 20. Line Transient
TPS7A4701-EP G019_SLVSDQ3.gif
VOUT = 4.7 V COUT = 10 µF CNR = 1 µF
BWRMSNOISE (10 Hz, 100 kHz)
Figure 22. Noise vs Output Current