ZHCSBE2A August   2013  – October 2022 TPS54625

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用范围
  3. 3 说明
  4. 4 ORDERING INFORMATION (1)
  5. 5 最大绝对额定值
  6. 6 THERMAL INFORMATION
  7. 7 RECOMMENDED OPERATING CONDITIONS
  8. 8 ELECTRICAL CHARACTERISTICS
  9. 9 DEVICE INFORMATION
  10. 10OVERVIEW
  11. 11DETAILED DESCRIPTION
    1. 11.1 PWM Operation
    2. 11.2 PWM Frequency and Adaptive On-Time Control
    3. 11.3 Soft Start and Pre-Biased Soft Start
    4. 11.4 Power Good
    5. 11.5 Output Discharge Control
    6. 11.6 Current Protection
    7. 11.7 Over/Under Voltage Protection
    8. 11.8 UVLO Protection
    9. 11.9 Thermal Shutdown
  12. 12TYPICAL CHARACTERISTICS
  13. 13DESIGN GUIDE
    1. 13.1 Step By Step Design Procedure
    2. 13.2 Output Voltage Resistors Selection
    3. 13.3 Output Filter Selection
    4. 13.4 Input Capacitor Selection
    5. 13.5 Bootstrap Capacitor Selection
    6. 13.6 VREG5 Capacitor Selection
  14. 14THERMAL INFORMATION
  15. 15LAYOUT CONSIDERATIONS
  16. 16Revision History

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

8 ELECTRICAL CHARACTERISTICS

over operating free-air temperature range, VIN = 12V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
IVIN Operating - non-switching supply current VIN current, TA = 25°C, EN = 5 V,
VVFB = 0.8 V		 950 1400 μA
IVINSDN Shutdown supply current VIN current, TA = 25°C, EN = 0 V 3.6 10 μA
LOGIC THRESHOLD
VENH EN high-level input voltage EN 1.6 V
VENL EN low-level input voltage EN 0.6 V
REN EN pin resistance to GND VEN = 12 V 200 400 800 kΩ
VFB VOLTAGE AND DISCHARGE RESISTANCE
VVFBTH VFB threshold voltage TA = 25°C, VO = 1.05 V, continuous mode 757 765 773 mV
TA = 0℃ to 85℃, VO = 1.05 V, continuous mode (1) 753 777
TA = –40°C to 85°C, VO = 1.05 V, continuous mode(1) 751 779
IVFB VFB input current VFB = 0.8 V, TA = 25°C 0 ±0.15 μA
RDischg VO discharge resistance VEN = 0 V, VO = 0.5 V, TA = 25°C 100 150 Ω
VREG5 OUTPUT
VVREG5 VREG5 output voltage TA = 25°C, 6.0 V < VIN < 18 V,
0 < IVREG5 < 5 mA		 5.2 5.5 5.7 V
IVREG5 Output current VIN = 6 V, VVREG5 = 4 V, TA = 25°C 20 mA
MOSFET
Rdsonh High side switch resistance TA = 25°C, VBST - VSW1,2 = 5.5 V 36 mΩ
Rdsonl Low side switch resistance TA = 25°C 28 mΩ
CURRENT LIMIT
Iocl Current limit LOUT = 1.5 μH(1) 7.2 8.2 9.5 A
THERMAL SHUTDOWN
TSDN Thermal shutdown threshold Shutdown temperature (1) 165 °C
Hysteresis (1) 35
ON-TIME TIMER CONTROL
TON On time VIN = 12 V, VO = 1.05 V 150 ns
TOFF(MIN) Minimum off time TA = 25°C, VVFB = 0.7 V 260 310 ns
SOFT START
ISSC SS charge current VSS = 1 V 4.2 6.0 7.8 μA
ISSD SS discharge current VSS = 0.5 V 1.5 3.3 mA
POWER GOOD
VTHPG PG threshold VVFB rising (good) 85% 90% 95%
VVFB falling (fault) 85%
IPG PG sink current VPG = 0.5 V 2.5 5 mA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVP Output OVP trip threshold OVP detect 120% 125% 130%
TOVPDEL Output OVP prop delay 10 μs
VUVP Output UVP trip threshold UVP detect 60% 65% 70%
Hysteresis 10%
TUVPDEL Output UVP delay 0.25 ms
TUVPEN Output UVP enable delay Relative to soft-start time X 1.7
UVLO
VUVLO UVLO threshold Wake up VREG5 voltage 3.45 3.75 4.05 V
Hysteresis VREG5 voltage 0.13 0.32 0.48
(1) Not production tested.