ST1S03A datasheet, PDF - EEWORLD Datasheet

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ST1S03A: Description1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3; File Size214KB，14 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3

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ST1S03A

1.5A, 1.5 MHz Adjustable, with inhibit function

Step-down switching regulator in DFN6 3x3

Features

■

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

: max 200mV @ I

=750mA

Uses tiny capacitors and inductors

Available in DFN6 3x3 exposed pad

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)

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

Part number

ST1S03APMR

ST1S03AIPMR

ST1S03APUR

ST1S03AIPUR

May 2007

Packaging

Tape & reel

Rev. 3

Package

DFN6 (3x3 mm)

DFN6D (3x3 mm)

1/14

www.st.com

ST1S03A Related Products

	ST1S03A	ST1S03AIPMR	ST1S03APMR
Description	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3	1.5A, 1.5 MHz Adjustable, with inhibit function Step-down switching regulator in DFN6 3x3
Is it Rohs certified?	-	conform to	conform to
Maker	-	STMicroelectronics	STMicroelectronics
Parts packaging code	-	DFN	DFN
package instruction	-	3 X 3 MM, LEAD FREE, DFN-6	3 X 3 MM, LEAD FREE, DFN-6
Contacts	-	6	6
Reach Compliance Code	-	compli	compli
ECCN code	-	EAR99	EAR99
Analog Integrated Circuits - Other Types	-	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	-	CURRENT-MODE	CURRENT-MODE
Control Technology	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	-	5.5 V	5.5 V
Minimum input voltage	-	2.7 V	2.7 V
Nominal input voltage	-	5 V	5 V
JESD-30 code	-	S-XDSO-N6	S-XDSO-N6
length	-	3 mm	3 mm
Number of functions	-	1	1
Number of terminals	-	6	6
Maximum operating temperature	-	125 °C	125 °C
Maximum output current	-	2.5 A	2.5 A
Package body material	-	UNSPECIFIED	UNSPECIFIED
encapsulated code	-	HVSON	HVSON
Package shape	-	SQUARE	SQUARE
Package form	-	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	-	260	260
Certification status	-	Not Qualified	Not Qualified
Maximum seat height	-	1 mm	1 mm
surface mount	-	YES	YES
Switch configuration	-	BUCK	BUCK
Maximum switching frequency	-	1800 kHz	1800 kHz
Temperature level	-	OTHER	OTHER
Terminal form	-	NO LEAD	NO LEAD
Terminal pitch	-	0.95 mm	0.95 mm
Terminal location	-	DUAL	DUAL
Maximum time at peak reflow temperature	-	40	40
width	-	3 mm	3 mm

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