Product details

Iout (Max) (A) 3 Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.4 Vout (Max) (V) 5.5 Soft start Adjustable Features Enable, Light Load Efficiency, Output Discharge, Power Good, Tracking Operating temperature range (C) -40 to 125 Iq (Typ) (uA) 4 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2500 Switching frequency (Min) (kHz) 1000 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
Iout (Max) (A) 3 Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.4 Vout (Max) (V) 5.5 Soft start Adjustable Features Enable, Light Load Efficiency, Output Discharge, Power Good, Tracking Operating temperature range (C) -40 to 125 Iq (Typ) (uA) 4 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 2500 Switching frequency (Min) (kHz) 1000 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck
  • High efficiency for wide duty cycle and load range
    • IQ: 4-µA typical
    • 62-mΩ high-side and 22-mΩ low-side RDS(ON)
  • 3-mm × 2.8-mm × 1.6-mm MicroSiP™ package
  • Up to 3-A continuous output current
  • ±0.9% feedback voltage accuracy across temp (–40°C to 125°C)
  • Configurable output voltage options:
    • VFB external divider: 0.6 V to 5.5 V
    • VSET internal divider: 16 options between 0.4 V and 5.5 V
  • DCS-Control™ topology with 100% mode
  • Flexibility through MODE/S-CONF pin
    • 2.5-MHz or 1.0-MHz switching frequency
    • Forced PWM or auto (PFM) power save mode with dynamic mode change option
    • Automatic efficiency enhancement (AEE)
    • Output discharge on/off
  • Highly flexible and easy to use
    • Optimized pinout for single-layer routing
    • Precise enable input
    • Power-good output
    • Adjustable soft start and tracking
  • No external bootstrap capacitor required
  • Create a custom design using the TPSM82903 using the WEBENCH Power Designer
  • High efficiency for wide duty cycle and load range
    • IQ: 4-µA typical
    • 62-mΩ high-side and 22-mΩ low-side RDS(ON)
  • 3-mm × 2.8-mm × 1.6-mm MicroSiP™ package
  • Up to 3-A continuous output current
  • ±0.9% feedback voltage accuracy across temp (–40°C to 125°C)
  • Configurable output voltage options:
    • VFB external divider: 0.6 V to 5.5 V
    • VSET internal divider: 16 options between 0.4 V and 5.5 V
  • DCS-Control™ topology with 100% mode
  • Flexibility through MODE/S-CONF pin
    • 2.5-MHz or 1.0-MHz switching frequency
    • Forced PWM or auto (PFM) power save mode with dynamic mode change option
    • Automatic efficiency enhancement (AEE)
    • Output discharge on/off
  • Highly flexible and easy to use
    • Optimized pinout for single-layer routing
    • Precise enable input
    • Power-good output
    • Adjustable soft start and tracking
  • No external bootstrap capacitor required
  • Create a custom design using the TPSM82903 using the WEBENCH Power Designer

The TPSM82903 is a highly efficient, small, and flexible synchronous step-down DC-DC converter MicroSiP module that is easy to use. A selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small components and provides fast transient response. The device supports high VOUT accuracy of ± 1% with the DCS-Control topology. The wide input voltage range of 3 V to 17 V supports a variety of nominal inputs, like 12-V supply rails, single-cell or multi-cell Li-Ion, and 5-V or 3.3-V rails.

The TPSM82903 can automatically enter power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to provide high efficiency at very small loads, the device has a low typical quiescent current of 4 µA. AEE, if enabled, provides high efficiency across VIN, VOUT, and load current. The device includes a MODE/Smart-CONF input to set the internal/external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.

The device is available in small 11-pin MicroSiP package measuring 3.0 mm × 2.8 mm × 1.6 mm with an integrated 1-µH inductor.

The TPSM82903 is a highly efficient, small, and flexible synchronous step-down DC-DC converter MicroSiP module that is easy to use. A selectable switching frequency of 2.5 MHz or 1.0 MHz allows the use of small components and provides fast transient response. The device supports high VOUT accuracy of ± 1% with the DCS-Control topology. The wide input voltage range of 3 V to 17 V supports a variety of nominal inputs, like 12-V supply rails, single-cell or multi-cell Li-Ion, and 5-V or 3.3-V rails.

The TPSM82903 can automatically enter power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to provide high efficiency at very small loads, the device has a low typical quiescent current of 4 µA. AEE, if enabled, provides high efficiency across VIN, VOUT, and load current. The device includes a MODE/Smart-CONF input to set the internal/external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.

The device is available in small 11-pin MicroSiP package measuring 3.0 mm × 2.8 mm × 1.6 mm with an integrated 1-µH inductor.

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Technical documentation

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* Data sheet TPSM82903, 3-A, 3-V to 17-V, High Efficiency and Low IQ Buck Converter Module in a MicroSiPTM Package with an Integrated Inductor datasheet PDF | HTML 15 Feb 2022
Certificate TPSM82903EVM EU RoHS Declaration of Conformity (DoC) 01 Apr 2022
Application note Detailed Comparison Between TPSM82903 and TPS82130 PDF | HTML 31 Mar 2022
User guide TPSM8290x Step-Down Converter Evaluation Module User's Guide PDF | HTML 01 Mar 2022

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Evaluation board

TPSM82903EVM — TPSM82903 evaluation module 3-V to 17-V input, 3-A, low-IQ buck converter with integrated inductor

The TPSM82903EVM evaluation module (EVM) facilitates the evaluation of the TPSM82903 buck converter module in a small 3.0-mm by 2.8-mm MicroSiP™ package with integrated inductor. The EVM outputs a 1.2-V output voltage from input voltages between 3 V and 17 V. The TPSM82903 is a (...)

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