ZHCSK64B October   2019  – December 2020 TPSM265R1

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 (VIN = 5 V)
    7. 6.7  Typical Characteristics (VIN = 12 V)
    8. 6.8  Typical Characteristics (VIN = 24 V)
    9. 6.9  Typical Characteristics (VIN = 48 V)
    10. 6.10 Typical Characteristics (VIN = 65 V)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Adjustable Output Voltage (FB)
      2. 7.3.2 Input Capacitor Selection
      3. 7.3.3 Output Capacitor Selection
      4. 7.3.4 Precision Enable (EN), Undervoltage Lockout (UVLO), and Hysteresis (HYS)
      5. 7.3.5 PFM Operation
      6. 7.3.6 Power Good (PGOOD)
      7. 7.3.7 Configurable Soft Start (SS)
        1. 7.3.7.1 Prebiased Start-up
      8. 7.3.8 Overcurrent Protection (OCP)
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Standby Mode
      3. 7.4.3 Active Mode
      4. 7.4.4 Sleep Mode
  8. 8 Applications and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Setpoint
        3. 8.2.2.3 Input Capacitors
        4. 8.2.2.4 Output Capacitor Selection
        5. 8.2.2.5 UVLO Programming
        6. 8.2.2.6 Soft-Start Capacitor – CSS
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
      1. 10.2.1 Theta JA versus PCB Area
      2. 10.2.2 Package Specifications
      3. 10.2.3 EMI
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
      3. 11.1.3 Custom Design With WEBENCH® Tools
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

6.5 Electrical Characteristics

Limits apply over TA = –40°C to +125°C, VIN = 12 V, VOUT = 5 V,  (unless otherwise noted); CIN1 = 1 µF, 100-V, 1206 ceramic, CIN2 = 33 µF, 100-V, electrolytic (optional), and COUT = 47 µF, 16-V, 1210 ceramic. Minimum and maximum limits are specified through production test or by design. Typical values represent the most likely parametric norm and are provided for reference only.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY VOLTAGE
VIN Input supply voltage range Over IOUT range 3(1) 65 V
UVLO VIN UVLO rising threshold VIN rising 2.60 2.75 2.95 V
VIN UVLO falling threshold VIN falling 2.35 2.45 2.60 V
IQ(VIN) VIN operating non-switching supply current VFB = 1.5 V, TA = 25°C 10.5 15 µA
ISD(VIN) VIN shutdown supply current VEN = 0 V, TA = 25°C 4.6 6.0 µA
ENABLE
VEN(rise) EN voltage rising threshold EN voltage rising 1.163 1.212 1.262 V
VEN(fall) EN voltage falling threshold EN voltage falling 1.109 1.144 1.178 V
VEN(hyst) EN voltage hysteresis 68 mV
VEN(sd) EN shutdown threshold EN voltage falling 0.3 0.6 V
RHYS HYS on-resistance VEN = 1 V 80 200 Ω
IHYS(LKG) HYS off-state leakage current VEN = 1.5 V, VHYS = 5.5 V 10 100 nA
FEEDBACK (Adjustable option)
VFB Feedback voltage(2)(4) Lower regulation threshold 1.205 1.223 1.241 V
Upper regulation threshold 1.220 1.233 1.246 V
Hysteresis 10 mV
Line regulation Over VIN range, TA = 25°C, IOUT = 0 A 0.3%
Load regulation Over IOUT range, TA = 25°C 0.3%
Temperature variation -40°C ≤ TA = TJ ≤ 125°C, IOUT = 0 A 0.5%
IFB Input bias current into FB pin VFB = 1 V 100 nA
OUTPUT VOLTAGE (Fixed 5 V option)
VOUT Output voltage set-point SENSE+ connected to VOUT 4.9 5.0 5.1 V
Line regulation Over VIN range, TA = 25°C, IOUT = 0 A 0.3%
Load regulation Over IOUT range, TA = 25°C 0.3%
Temperature variation -40°C ≤ TA = TJ ≤ 125°C, IOUT = 0 A 0.5%
ISENSE+ SENSE+ input current 6.7 µA
eff Efficiency VOUT = 5.0 V, IOUT = 50 mA 83.0%
OUTPUT VOLTAGE (Fixed 3.3 V option)
VOUT Output voltage set-point SENSE+ connected to VOUT 3.23 3.3 3.37 V
Line regulation Over VIN range, TA = 25°C, IOUT = 0 A 0.3%
Load regulation Over IOUT range, TA = 25°C 0.3%
Temperature variation -40°C ≤ TA = TJ ≤ 125°C, IOUT = 0 A 0.5%
ISENSE+ SENSE+ input current 3.9 µA
eff Efficiency VOUT = 3.3 V, IOUT = 50 mA 77.2%
CURRENT
IOUT Output current See SOA curves for any thermal derating 0 100 mA
IOCL Overcurrent limit threshold VOUT foldback 130 mA
SOFT-START
ISS Soft-start charge current VSS = 1 V 10 µA
TSS Soft-start rise time SS pin open 900 µs
POWER GOOD
PGOOD PGOOD threshold PGOOD high, VOUT rising 94%
PGOOD PGOOD threshold PGOOD low, VOUT falling 87%
IPGOOD(LKG) PGOOD leakage current  VPGOOD = 5.5 V, PGOOD high 10 100 nA
RPGOOD PGOOD ON-resistance PGOOD low 80 200 Ω
Min VIN for valid PGOOD output IPGOOD = 0.1 mA, VPGOOD < 0.5 V 1.2 1.65 V
THERMAL SHUTDOWN
TSDN Thermal shutdown threshold (3) Temperature rising 170 °C
THYST Thermal shutdown hysteresis (3) 10 °C
(1) The recommended minimum input voltage is 3.0 V or (VOUT + 1 V), whichever is greater.
(2) The FB pin has both lower and upper thresholds associated with the hysteretic control scheme of the module.
(3) Specified by design. Not production tested.
(4) The overall output voltage tolerance will be affected by the tolerance of the external RFBT and RFBB resistors.
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