Specification	TPS5103IDBR

Clock Sync	False
Control Features	Current Limit, Frequency Control, Soft Start
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 / Case	20-SSOP
Supplier Device Package	20-SSOP
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	25 V
Voltage - Supply (Vcc/Vdd) [Min]	4.5 V

TPS5103 Series

4.5-V to 25-V, synchronous buck controller with three operating modes

Part	Frequency - Switching	Number of Outputs	Output Configuration	Topology	Clock Sync	Package / Case	Supplier Device Package	Mounting Type	Output Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Control Features	Operating Temperature [Max]	Operating Temperature [Min]	Function	Synchronous Rectifier	Output Phases
Texas Instruments TPS5103IDBR	200 kHz	1	Positive	Buck		20-SSOP	20-SSOP	Surface Mount	Transistor Driver	25 V	4.5 V	Current Limit Frequency Control Soft Start	85 °C	-40 °C	Step-Down		1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2000	$ 1.98
Texas Instruments	LARGE T&R	1	$ 3.27
		100	$ 2.86
		250	$ 2.01
		1000	$ 1.62

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.

Documents

Technical documentation and resources

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

Data sheet