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ST1S03RPM

Description
1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN DFN6
CategoryPower/power management    The power supply circuit   
File Size492KB,11 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
Environmental Compliance
Download Datasheet Parametric View All

ST1S03RPM Overview

1.5A, 1.5 MHZ ADJUSTABLE, STEP-DOWN SWITCHING REGULATOR IN DFN6

ST1S03RPM Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerSTMicroelectronics
Parts packaging codeDFN
package instruction3 X 3 MM, DFN-6
Contacts6
Reach Compliance Codecompli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage16 V
Minimum input voltage3 V
Nominal input voltage5 V
JESD-30 codeS-XDSO-N6
length3 mm
Number of functions1
Number of terminals6
Package body materialUNSPECIFIED
encapsulated codeHVSON
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency1800 kHz
Terminal formNO LEAD
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3 mm
ST1S03
1.5A, 1.5 MHZ ADJUSTABLE,
STEP-DOWN SWITCHING REGULATOR IN DFN6
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STEP-DOWN CURRENT MODE PWM
(1.5MHz) DC-DC CONVERTER
2% DC OUTPUT VOLTAGE TOLERANCE
INTERNAL SOFT START FOR START-UP
CURRENT LIMITIATION AND POWER ON
DELAY OF 50-100µs
TYPICAL EFFICIENCY: > 70% OVER ALL
OPERATING CONDITIONS
1.5A OUTPUT CURRENT CAPABILITY
NOT SWITCHING QUIESCENT CURRENT:
MAX 2.5mA OVER TEMPERATURE RANGE
SWITCH V
DS
: MAX 350mV @ISW=750mA
USES TINY CAPACITORS AND INDUCTORS
AVAILABLE IN DFN 3x3 EXPOSED PAD
DFN6 (3x3)
DESCRIPTION
The ST1S03 is a step down DC-DC converter
optimized for powering low-voltage digital core in
HDD applications and, generally, to replace the
high current linear solution when the power
dissipation may cause an high heating of the
application environment. It provides up to 1.5A
over an input voltage range of 3V to 16V. An high
Figure 1: Schematic Diagram
switching frequency (1.5MHz) allows the use of
tiny surface-mount components: as well as the
resistor divider to set the output voltage value,
only an inductor, a schottky diode and two
capacitors are required. Besides, a low output
ripple is guaranteed by the current mode PWM
topology and by the use of low E.S.R. SMD
ceramic capacitors. The device is thermal
protected and current limited to prevent damages
due to accidental short circuit. The ST1S03 is
available in DFN6 package.
March 2005
Rev. 3
1/11
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