SLVSE48C january   2018  – may 2023 TPS65268-Q1

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Revision History
  6. Pin Configuration and Functions
  7. 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 Timing Requirements
    7. 6.7 Typical Characteristics
  8. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Adjusting the Output Voltage
      2. 7.3.2  Enable and Adjusting UVLO
      3. 7.3.3  Soft-Start Time
      4. 7.3.4  Power-Up Sequencing
      5. 7.3.5  V7V Low-Dropout Regulator and Bootstrap
      6. 7.3.6  Out-of-Phase Operation
      7. 7.3.7  Output Overvoltage Protection (OVP)
      8. 7.3.8  Slope Compensation
      9. 7.3.9  Overcurrent Protection
        1. 7.3.9.1 High-Side MOSFET Overcurrent Protection
        2. 7.3.9.2 Low-Side MOSFET Overcurrent Protection
      10. 7.3.10 Power Good
        1. 7.3.10.1 Adjustable Switching Frequency
      11. 7.3.11 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Standby Operation
  9. 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 Output Inductor Selection
        2. 8.2.2.2 Output Capacitor Selection
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Loop Compensation
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Electrical Characteristics

VIN = 5 V, fSW = 2 MHz, –40°C ≥ TJ ≥ 125°C, typical values are at TJ = 25°C (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT SUPPLY VOLTAGE
VINInput voltage range48V
UVLOVIN UVLOVIN rising3.53.84V
VIN falling3.13.33.5V
UVLOhysVIN UVLO hysteresis500mV
IDDSDNShutdown supply currentVEN1 = VEN2 = VEN3 = 0 V2.5615µA
IDDQ_NSWInput quiescent current without BUCK1, BUCK2, BUCK3 switchingVEN1 = VEN2 = VEN3 = 3 V, VFB1 = VFB2 = VFB3 = 0.8 V5507801150µA
IDDQ_NSW1VEN1 = 3 V, VEN2 = VEN3 = 0 V, VFB1 = 0.8 V180370590
IDDQ_NSW2VEN2 = 3 V, VEN1 = VEN3 = 0 V, VFB2 = 0.8 V180370590
IDDQ_NSW3VEN3 = 3 V, VEN1 = VEN2 = 0 V, VFB3 = 0.8 V180370590
VV7VV7V LDO output voltageVIN = 5 V, VV7V load current = 0 A4.96V
VIN = 8 V, VV7V load current = 0 A6.3V
IOCP_V7VV7V LDO current limit78185260mA
FEEDBACK VOLTAGE REFERENCE
VFBFeedback voltageVCOMP = 1.2 V0.5940.60.606V
BUCK1, BUCK2, BUCK3
VENxHEN1, EN2, EN3 high-level input voltage1.121.21.26V
VENxLEN1, EN2, EN3 low-level input voltage1.051.151.21V
IENx1EN1, EN2, EN3 pullup currentVENx = 1 V2.53.95.9µA
IENx2VENx = 1.5 V5.16.99.2
IENhysHysteresis current2.633.3µA
ISSXSoft-start charging current3.95.26.5µA
tON_MINMinimum on-time5075110ns
Gm_EAError amplifier transconductance–2 µA < ICOMPx < 2 µA140300450µs
Gm_PS1/2/3COMP1/2/3 voltage to inductor current Gm(1)ILX = 0.5 A7.4A/V
ILIMIT1BUCK1 peak inductor current limit4.85.97A
ILIMITSINK1BUCK1 low-side sink current limit0.71.31.8A
ILIMIT2/3BUCK2/BUCK3 peak inductor current limit2.553.34A
ILIMITSINK2/3BUCK2/BUCK3 low-side sink current limit0.511.4A
Rdson_HS1BUCK1 high-side switch resistanceVIN = 5 V110
Rdson_LS1BUCK1 low-side switch resistanceVIN = 5 V67
Rdson_HS2BUCK2 high-side switch resistanceVIN = 5 V149
Rdson_LS2BUCK2 low-side switch resistanceVIN = 5 V94
Rdson_HS3BUCK3 high-side switch resistanceVIN = 5 V149
Rdson_LS3BUCK3 low-side switch resistanceVIN = 5 V94
POWER GOOD
Vth_PGFeedback voltage thresholdFBx undervoltage falling92.5%Vref
FBx undervoltage rising95
FBx overvoltage rising107.5
FBx overvoltage falling105
tDEGLITCH(PG)_FPGOOD falling edge deglitch time112cycles
tRDEGLITCH(PG)_RPGOOD rising edge deglitch time616cycles
IPGPGOOD pin leakage0.1µA
VLOW_PGPGOOD pin low voltageISINK = 1 mA0.4V
OSCILLATOR
fSWSwitching frequencyROSC = 88.7 kΩ430500560kHz
fSW_rangeSwitching frequency2002300kHz
fSYNC_wClock sync minimum pulse width80ns
fSYNC_HIClock sync high threshold2V
fSYNC_LOClock sync low threshold0.4V
fSYNCClock sync frequency range2002300kHz
THERMAL PROTECTION
TTRIP_OTPThermal protection trip point(1)Temperature rising160°C
THYST_OTPThermal protection trip point hysteresis(1)20°C
Lab validation result