TPS5103IDBR

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Texas Instruments

4.5-V TO 25-V, SYNCHRONOUS BUCK CONTROLLER WITH THREE OPERATING MODES

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TPS5103IDBR

Active

Texas Instruments

4.5-V TO 25-V, SYNCHRONOUS BUCK CONTROLLER WITH THREE OPERATING MODES

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Description Specifications Series Pricing CAD Documents

Description

General part information

TPS5103 Series

The TPS5103 is a synchronous buck dc/dc controller, designed for notebook PC system power. The controller has three user-selectable operation modes available: hysteretic mode, fixed-frequency PWM control, or SKIP control.

In high-current applications, where fast transient response is advantageous for reducing bulk capacitance, the hysteretic mode is selected by connecting the RTpin to VREF5. Selecting the PWM/SKIP modes for less demanding transient applications is ideal for conserving notebook battery life under light load conditions. The device includes high-side and low-side MOSFET drivers capable of driving low rds(on)N-channel MOSFETs.

The user-selectable overcurrent protection (OCP) threshold is set by an external TRIP-pin resistor in order to protect the system. The TPS5103 is configured so that a current-sense resistor is not required, improving the operating efficiency.

Technical Specifications

Parameters and characteristics for this part

Specification	TPS5103IDBR

Clock Sync	No
Control Features	Current Limit, Soft Start, Frequency Control
Frequency - Switching	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package Length	0.209 in
Package Name	20-SSOP
Package Width	5.3 mm
Synchronous Rectifier	Yes
Topology	Buck
Voltage - Supply (Vcc/Vdd) Maximum	25 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

TPS5103 Series

Part	Package Width	Package Name	Package Length	Control Features	Synchronous Rectifier	Number of Outputs	Output Type	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Output Configuration	Topology	Mounting Type	Clock Sync	Function	Output Phases	Operating Temperature (Max)	Operating Temperature (Min)	Frequency - Switching
Texas Instruments TPS5103IDBR	5.3 mm	20-SSOP	0.209 in	Current Limit Frequency Control Soft Start	Yes	1	Transistor Driver	4.5 V	25 V	Positive	Buck	Surface Mount	No	Step-Down	1	85 °C	-40 °C	200 kHz
Texas Instruments TPS5103IDB	5.3 mm	20-SSOP	0.209 in	Current Limit Frequency Control Soft Start	Yes	1	Transistor Driver	4.5 V	25 V	Positive	Buck	Surface Mount	No	Step-Down	1	85 °C	-40 °C	200 kHz

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Multiple Mode Synchronous DC/DC Controller datasheet (Rev. A)