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TPS53126

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4.5-V to 24-V, synchronous dual-D-CAP2 buck controller with selectable switching frequency

Product details

Vin (min) (V) 4.5 Vin (max) (V) 24 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Iout (max) (A) 15 Iq (typ) (mA) 0.45 Switching frequency (min) (kHz) 350 Switching frequency (max) (kHz) 700 Features Enable, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 2 Number of phases 1 Rating Catalog Control mode D-CAP2 Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 24 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Iout (max) (A) 15 Iq (typ) (mA) 0.45 Switching frequency (min) (kHz) 350 Switching frequency (max) (kHz) 700 Features Enable, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 2 Number of phases 1 Rating Catalog Control mode D-CAP2 Type Controller
TSSOP (PW) 24 49.92 mm² 7.8 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • D-CAP2™ Mode Control
    • Fast Transient Response
    • No External Parts Required For Loop
      Compensation
    • Compatible with Ceramic Output Capacitors
  • High Initial Reference Accuracy (±1%)
  • Low Output Ripple
  • Wide Input Voltage Range: 4.5 V to 24 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(on) Loss-Less Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Internal 1.2 ms Voltage-Servo Soft Start
  • Pre-Biased Soft Start
  • Selectable Switching Frequency: 350 kHz / 700
    kHz
  • Cycle-by-Cycle Over-Current Limiting Control
  • 30 mV to 300 mV OCP Threshold Voltage
  • Thermally Compensated OCP by 4000 ppm/C° at
    ITRIP
  • D-CAP2™ Mode Control
    • Fast Transient Response
    • No External Parts Required For Loop
      Compensation
    • Compatible with Ceramic Output Capacitors
  • High Initial Reference Accuracy (±1%)
  • Low Output Ripple
  • Wide Input Voltage Range: 4.5 V to 24 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Low-Side RDS(on) Loss-Less Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Internal 1.2 ms Voltage-Servo Soft Start
  • Pre-Biased Soft Start
  • Selectable Switching Frequency: 350 kHz / 700
    kHz
  • Cycle-by-Cycle Over-Current Limiting Control
  • 30 mV to 300 mV OCP Threshold Voltage
  • Thermally Compensated OCP by 4000 ppm/C° at
    ITRIP

The TPS53126 is a dual, adaptive on-time, D-CAP2™ mode synchronous Buck controller. The TPS53126 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low external component count, and low standby current solution. The main control loop for the TPS53126 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS53126 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltages from 0.76 V to 5.5 V.

The TPS53126 is available in 4mm × 4mm 24 pin VQFN (RGE) or 24 pin TSSOP (PW) packages and is specified from –40°C to 85°C ambient temperature range.

The TPS53126 is a dual, adaptive on-time, D-CAP2™ mode synchronous Buck controller. The TPS53126 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low external component count, and low standby current solution. The main control loop for the TPS53126 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS53126 also has a proprietary circuit that enables the device to adapt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5 V to 24 V and output voltages from 0.76 V to 5.5 V.

The TPS53126 is available in 4mm × 4mm 24 pin VQFN (RGE) or 24 pin TSSOP (PW) packages and is specified from –40°C to 85°C ambient temperature range.

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Technical documentation

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Type Title Date
* Data sheet TPS53126 Dual Synchronous Step-down Controller For Low Voltage Power Rails datasheet (Rev. B) PDF | HTML 28 Apr 2014
User guide TPS53126 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 25 Jan 2022
User guide TPS53127 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 25 Jan 2022
User guide TPS53128 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 25 Jan 2022
User guide TPS53129 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 10 Jan 2022
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018

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TSSOP (PW) 24 View options
VQFN (RGE) 24 View options

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