1 Features
• Functional Safety-Capable
– Documentation available to aid functional safety
system design
• Input voltage range: 2.7 V to 6 V
• Output voltage from 0.6 V to 5.5 V
• 1% feedback voltage accuracy
(full temperature range)
• TJ = –40°C to +150°C
• Family of 1-A, 2-A (continuous), and 3-A (peak)
devices
• Adjustable switching frequency and sync of
1.8 MHz to 4 MHz
• Forced PWM or PWM and PFM operation
• Quiescent current 17 μA (typical)
• Precise ENABLE input allows:
– User-defined undervoltage lockout
– Exact sequencing
• 100% duty cycle mode
• Active output discharge
• Power-good output with window comparator
• For device options with adjustable soft start, see
the TPS628511

2 Applications
• Motor drives
• Factory automation and control
• Building automation
• Test and measurement
• General purpose POL

3 Description
The TPS62850x is a family of pin-to-pin 1-A, 2-A
(continuous), and 3-A (peak) high efficiency, easyto-
use synchronous step-down DC/DC converters.
They are based on a peak current mode control
topology. Low resistive switches allow up to 2-A
continuous output current and 3-A peak current. The
switching frequency is externally adjustable from 1.8
MHz to 4 MHz and can also be synchronized to
an external clock in the same frequency range. In
PWM and PFM mode, the TPS62850x automatically
enters power save mode at light loads to maintain
high efficiency across the whole load range. The
TPS62850x provides a 1% output voltage accuracy
in PWM mode, which helps design a power supply
with high output voltage accuracy, fulfilling tight supply
voltage requirements of digital processors and FPGA.
The TPS62850x is available in an 8-pin 1.60-mm ×
2.10-mm SOT583 package.