1 Features
• Configured for a wide range of applications
– 3.8V to 28V input voltage range
– 0.6V to 17V output voltage range
– Up to 3A continuous output current
– 0.6V ±1% reference voltage (–40°C to 125°C)
– Low quiescent current of 28uA (typical)
– 70ns, 114ns minimum switching on, off-time
– 8us maximum switching on-time
– 98% maximum duty cycle
• Ease of use and small design size
– Peak current control mode with internal
compensation
– 200kHz to 2.2MHz selectable frequency
– Synchronizable to an external clock (support
phase shift): 200kHz to 2.2MHz
– Selectable PFM / FCCM at light load condition
– Selectable adjustable soft-start time / powergood
indicator function
– Good EMI performance with frequency spread
spectrum and optimized pinout
– Hiccup OC limit for both high-side and low-side
MOSFETs
– Non-latched protections for OTP, OCP, OVP,
UVP, and UVLO
– Integrated bootstrap capacitor and inductor to
support easy PCB layout
– Operating junction temperature of –40°C to
125°C
– 3.3mm × 4.5mm × 2mm QFN package
• Create a custom design with the TPSM84338
using the WEBENCH® Power Designer

2 Applications
• Medical and healthcare
• Test and measurement
• Building automation
• Wired networking, wireless infrastructure
• Distributed power systems with 5V, 12V, 19V, and
24V input

3 Description
The TPSM84338 is a high efficiency, high voltage
input, and easy-to-use synchronous buck power
module with high design flexibility. With the wide
operating input voltage range of 3.8V to 28V, the
TPSM84338 is designed for systems powered from
5V, 12V, 19V, 24V power-bus rails. The device
supports up to 3A continuous output current and 98%
maximum duty cycle.
TPSM84338 uses fixed frequency peak current
control with internal compensation for fast transient
response and good line and load regulation. With
the optimized internal loop compensation, the device
eliminates the need for external compensation over a
wide output voltage range and switching frequency.