4.2-V to 18-V, 3-A, synchronous buck converter with 1% accuracy, PG/SS and PFM/forced-PWM in SOT583

The TPS563211 is a cost

effective and highly flexible synchronous buck converter that provides selectable

Eco-mode operation or FCCM (Force Continuous Conduction Mode) operation. A

selectable Power-Good indicator or external soft start is also configurable through

the MODE pin. Power sequencing is possible by correctly configuring Enable,

Power-Good indicator, or external soft start. A wide input voltage range of 4.2 V to

18 V supports a wide variety of common input rails like 12 V and 15 V. It supports

up to 3-A continuous output current at output voltages between 0.6 V and 7

V.

The device provides fast transient

response with true fixed switching frequency through the use of the Advanced

Emulated Current Mode (AECM) control topology. With internal smart loop bandwidth

control, the device provides fast transient response over a wide output voltage

range without the need for external compensation.

Cycle-by-cycle current limit on the

high-side peak current protects the device in overload situations and is enhanced by

a low-side valley current limit, which prevents current runaway. Hiccup mode would

be triggered under overvoltage protection (OVP), undervoltage protection (UVP), UVLO

protection, and thermal shutdown.

The device is available in 1.6-mm ×

2.1-mm SOT583 package.