ZHCSN50H november   2007  – april 2023 TPS74701

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: Other Orderable Devices (non-M3 Suffix)
    6. 6.6  Electrical Characteristics: Orderable Device (M3 Suffix)
    7. 6.7  Typical Characteristics: VEN = VIN (All Other Orderable Devices, Non-M3 Suffix)
    8. 6.8  Typical Characteristics: VEN = VIN = 1.8 V, VOUT = 1.5 V (All Other Orderable Devices, Non-M3 Suffix)
    9. 6.9  Typical Characteristics: IOUT = 50 mA (M3 Suffix)
    10. 6.10 Typical Characteristics: VEN = VIN = 1.8 V, VOUT = 1.5 V (M3 Suffix)
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Programmable Soft-Start
      2. 7.3.2 Enable and Shutdown
      3. 7.3.3 Power Good
      4. 7.3.4 Internal Current Limit
      5. 7.3.5 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Disabled
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Input, Output, and Bias Capacitor Requirements
      2. 8.1.2 Transient Response
      3. 8.1.3 Dropout Voltage
      4. 8.1.4 Sequencing Requirements
      5. 8.1.5 Output Noise
    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
        1. 8.4.1.1 Power Dissipation
        2. 8.4.1.2 Estimating Junction Temperature
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 Evaluation Module
        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 静电放电警告
    7. 9.7 术语表
  11. 10Mechanical, Packaging, and Orderable Information

6.5 Electrical Characteristics: Other Orderable Devices (non-M3 Suffix)

At VEN = 1.1 V, VIN = VOUT + 0.3 V, CBIAS = 0.1 μF, CIN = COUT = 10 μF, CNR = 1 nF, IOUT = 50 mA, VBIAS = 5.0 V, and TJ = –40°C to 125°C, (unless otherwise noted); typical values are at TJ = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VREF Internal reference (Adj.) TA = +25°C 0.796 0.8 0.804 V
ΔVOUT(ΔVIN) Output voltage range VIN = 5 V, IOUT = 0.5 A VREF 3.6 V
Accuracy(1) 2.97 V ≤ VBIAS ≤ 5.5 V, 50 mA ≤ IOUT ≤ 0.5 A –2 ±0.5 2 %
ΔVOUT(ΔIOUT) Line regulation VOUT(nom) + 0.3 ≤ VIN ≤ 5.5 V 0.03 %/V
VOUT Load regulation 50 mA ≤ IOUT ≤ 0.5 A 0.09 %/A
VDO VIN dropout voltage(2) IOUT = 0.5 A, VBIAS – VOUT(nom) ≥ 3.25 V(3) 50 120 mV
VBIAS dropout voltage(2) IOUT = 0.5 A, VIN = VBIAS 1.31 1.39 V
ICL Output current limit VOUT = 80% × VOUT(nom) 800 1350 mA
IBIAS BIAS pin current 1 2 mA
ISHDN Shutdown supply current (IGND) VEN ≤ 0.4 V 1 50 µA
IFB Feedback pin current –1 0.15 1 µA
PSRR Power-supply rejection (VIN to VOUT) 1 kHz, IOUT = 0.5 A, VIN = 1.8 V, VOUT = 1.5 V 60 dB
300 kHz, IOUT = 0.5 A, VIN = 1.8 V, VOUT = 1.5 V 30 dB
Power-supply rejection (VBIAS to VOUT) 1 kHz, IOUT = 0.5 A, VIN = 1.8 V, VOUT = 1.5 V 50 dB
300 kHz, IOUT = 0.5 A, VIN = 1.8 V, VOUT = 1.5 V 30 dB
Vn Output noise voltage BW = 100 Hz to 100 kHz, IOUT = 0.5 A, CSS = 1 nF 25 μVrms x Vout
Vn Output noise voltage BW = 100 Hz to 100 kHz, IOUT = 0.5 A, CSS = 1 nF 25 × VOUT μVrms
tSTR Minimum start-up time RLOAD for IOUT = 0.5 A, CSS = open 200 µs
ISS Soft-start charging current VSS = 0.4 V 440 nA
VEN(hi) Enable input high level 1.1 5.5 V
VEN(lo) Enable input low level 0 0.4 V
VEN(hys) Enable pin hysteresis 50 mV
VEN(dg) Enable pin deglitch time 20 µs
IEN Enable pin current VEN = 5 V 0.1 1 µA
VIT PG trip threshold VOUT decreasing 85 90 94 %VOUT
VHYS PG trip hysteresis 3 %VOUT
VPG(lo) PG output low voltage IPG = 1 mA (sinking), VOUT < VIT 0.3 V
IPG(lkg) PG leakage current VPG = 5.25 V, VOUT > VIT 0.1 1 µA
TSD Thermal shutdown temperature Shutdown, temperature increasing 165 ℃
Reset, temperature decreasing 140
(1) Adjustable devices tested at 0.8 V; resistor tolerance is not taken into account.
(2) Dropout is defined as the voltage from VIN to VOUT when VOUT is 3% below nominal.
(3) 3.25 V is a test condition of this device and can be adjusted by referring to Figure 6-6.
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