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ST2S08B датащи(PDF) 1 Page - STMicroelectronics

номер детали ST2S08B
подробное описание детали  Dual synchronous rectification, 1.5 A, 1.5 MHz adjustable step-down switching regulator
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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This is information on a product in full production.
May 2012
Doc ID 18290 Rev 2
1/18
18
ST2S08B
Dual synchronous rectification, 1.5 A, 1.5 MHz
adjustable step-down switching regulator
Datasheet
production data
Features
Step-down current mode PWM (1.5 MHz) DC-
DC converter
Adjustable output voltage from 0.8 V
2 % DC output voltage tolerance
Synchronous rectification
Integrated current limit
Inhibit function
Soft-start for start delay of 800 µs typ.
Typical efficiency: > 80 % at VOUT = 1.2 V
1.5 A output current capability
Non-switching quiescent current: max 1.5 mA
over temperature range
RDS(ON) 150 mΩ (typ.)
Uses tiny capacitors and inductors
Available in QFN12L (4 x 4 mm)
Description
The ST2S08B is a dual step-down DC-DC
converter optimized for powering low-voltage
digital cores in ODD applications and, generally,
to replace the high current linear solution when
the power dissipation may cause a high heating of
the application environment. It provides up to 1.5
A over an input voltage range of 3 V to 5.5 V. A
high switching frequency of 1.5 MHz allows the
use of tiny surface-mounted 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 device is
thermally protected and current limited. The
ST2S08B is available in the QFN12L (4 x 4 mm)
package.
QFN12L (4 x 4 mm)
Table 1.
Device summary
Order code
Package
Packaging
ST2S08BPQR
QFN12L (4 x 4 mm)
Tape and reel
www.st.com


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