JAJSVB0 September   2024 TPS51388

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  PWM Operation and D-CAP3™ Control Mode
      2. 6.3.2  VCC Switchover Function
      3. 6.3.3  Soft Start
      4. 6.3.4  Large Duty Operation
      5. 6.3.5  Power Good
      6. 6.3.6  Overcurrent Protection and Undervoltage Protection
      7. 6.3.7  Overvoltage Protection
      8. 6.3.8  UVLO Protection
      9. 6.3.9  Output Voltage Discharge
      10. 6.3.10 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Light Load Operation
      2. 6.4.2 Advanced Eco-mode Control
      3. 6.4.3 Out-of-Audio™ Mode
      4. 6.4.4 Mode Selection
      5. 6.4.5 Standby Operation
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 External Component Selection
          1. 7.2.2.2.1 VOUT and FB Pin Configuration
          2. 7.2.2.2.2 MODE Selection
          3. 7.2.2.2.3 Inductor Selection
          4. 7.2.2.2.4 Output Capacitor Selection
          5. 7.2.2.2.5 Input Capacitor Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 ドキュメントの更新通知を受け取る方法
    4. 8.4 サポート・リソース
    5. 8.5 Trademarks
    6. 8.6 静電気放電に関する注意事項
    7. 8.7 用語集
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Tape and Reel Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • VAB|13
サーマルパッド・メカニカル・データ
発注情報

5.5 Electrical Characteristics

TJ = –20°C to 125°C, VIN = 12V, unless otherwise noted.
PARAMETERTEST CONDITIONMINTYPMAXUNIT
SUPPLY CURRENT
VINInput voltage range4.524V
IVINNon-switching supply currentNo load, VEN = 5V, non-switching90μA
IVINSDNShutdown supply currentNo load, VEN = 0V3μA
VCC OUTPUT
VCCVCC output voltageVIN > 5.2V, IVCC ≤ 1 mA, Bypasss switch off4.64.95.2V
FEEDBACK VOLTAGE
VFBFB voltageTJ = 25°C594600606mV
TJ = –20°C to 125°C591600609mV
DUTY CYCLE and FREQUENCY CONTROL
FSWSwitching frequencyCCM operation, MODE > 1V600kHz
CCM operation, MODE < 0.4V 1000 kHz
tON(MIN)SW minumum on time(1)60ns
tOFF(MIN)SW minimum off time(1)

130

ns
OOA Function
TOOAMode Operation Period

22

30

42

us
MOSFET and DRIVERS
RDS(ON)HHigh side switch resistanceTJ = 25°C9.2mΩ
RDS(ON)LLow side switch resistanceTJ = 25°C4.5mΩ
OUTPUT DISCHARGE and SOFT START
RDISDischarge resistanceVEN = 0V50Ω
tSSSoft-start timeInternal soft-start time1ms
POWER GOOD
tPGDLYPG delay risingPG from low to high160us
PG delay falling PG from high to low 30 us
VPGTHPG thresholdVFB falling (fault)83%
VFB rising (good)90%
VFB rising (fault)120%
VFB falling (good)115%
VPG_LPG sink current capabilityIOL = 4mA0.4V
IPGLKPG leak currentVPGOOD = 5.5V1μA
CURRENT LIMIT
IOCLOvercurrent threshold (valley)Valley current limit on LS FET, TJ = 25°C12.51416A
Overcurrent threshold (peak)Peak current limit on HS FET, TJ = 25°C22A
INOCLNegative over current thresholdSinking current limit on LS FET, OOA operation5.5A
LOGIC THRESHOLD
VENHEN high-level input voltageTJ = 25°C1V
VENLEN low-level input voltageTJ = 25°C0.4V
IENEnable internal pull down currentVEN = 0.3V2µA
VEN(OOA) OOA mode for EN pin 1 1.6 V
VEN(ECO) Eco-mode for EN pin 2.2 5.5 V
VMODE(600k) Mode threshold high-level TJ = 25°C 1 V
VMODE(1M) Mode threshold low-level TJ = 25°C 0.4 V
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVPOVP trip threshold120%
tOVPDLYOVP prop deglitch256us
VUVPUVP trip threshold60%
tUVPDLYUVP prop deglitch200us
UVLO
VUVLOVIN UVLO thresholdWake up4.254.45V
Shutdown3.43.6V
Hysteresis0.65V
OVERTEMPERATURE PROTECTION
TOTPOTP trip threshold(1)Shutdown temperature160°C
TOTPHSYOTP hysteresis(1)Hysteresis20°C
(1) Specified by design. Not production tested.