This is information on a product in full production.
May 2013 DocID13866 Rev 6 1/18
ST2S06
Dual synchronous rectification with reset or inhibit, 0.5 A, 1.5 MHz
adjustable step-down switching regulator
Datasheet - production data
Features
Step-down current mode PWM (1.5 MHz) DC-
DC converter
Fixed or adjustable output voltage from 0.8 V
2% DC output voltage tolerance
Synchronous rectification
Reset function for A version
Inhibit function for B version
Internal soft start for startup current limitation
and power ON delay of 50-100 µs
Typical efficiency: > 90%
0.5 A output current capability
Non-switching quiescent current: max 1.2 mA
over temperature range
R
DS(ON)
150 m (typ.)
Uses tiny capacitors and inductors
Available in QFN12L (4x4 mm)
Description
The ST2S06A33 and ST2S06B are dual step-
down DC-DC converters optimized for powering
low-voltage digital cores in ODD applications and,
generally, to replace high current linear solutions
when the power dissipation may cause high
heating of the application environment. It provides
up to 0.5 A over an input voltage range of 2.5 V to
5.5 V.
A high switching frequency of 1.5 MHz allows the
use of tiny surface-mount components as well as
a resistor divider to set the output voltage value.
Only an inductor and two capacitors are required.
A low output ripple is guaranteed by the current
mode PWM topology and the utilization of low
ESR SMD ceramic capacitors. The devices are
thermally protected and current-limited to prevent
damage due to accidental short-circuit. The
ST2S06A33 and ST2S06B are available in the
QFN12L (4x4 mm) package.
Table 1. Device summary
Order codes Package Packaging
ST2S06A33PQR
QFN12L (4 x 4 mm) Tape and reel
ST2S06BPQR
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