ST1S03AIPMR STMICROELECTRONICS [STMicroelectronics], ST1S03AIPMR Datasheet

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ST1S03AIPMR

Manufacturer Part Number
ST1S03AIPMR
Description
1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
Description
The ST1S03A 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
Order codes
May 2007
Step-down current mode PWM (1.5MHz) DC-
DC converter
2% DC output voltage tolerance
Internal soft start for start-up current limitation
and power on delay of 50-100µs
Typical efficiency: > 85%
Inhibit function
1.5A Output current capability
Not switching quiescent current: max 1.5mA
over temperature range
Switch V
Uses tiny capacitors and inductors
Available in DFN6 3x3 exposed pad
ST1S03AIPMR
ST1S03AIPUR
ST1S03APMR
ST1S03APUR
Part number
DS
: max 200mV @ I
SW
1.5A, 1.5 MHz Adjustable, with inhibit function
=750mA
Step-down switching regulator in DFN6 3x3
Tape & reel
Tape & reel
Tape & reel
Tape & reel
Packaging
Rev. 3
dissipation may cause an high heating of the
application environment. It provides up to 1.5A
over an input voltage range of 3V to 5.5V. An high
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 ST1S03A is
available in DFN6 (3x3).
DFN6 (3x3)
DFN6D (3x3 mm)
DFN6D (3x3 mm)
DFN6 (3x3 mm)
DFN6 (3x3 mm)
Package
ST1S03A
www.st.com
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