STMicroelectronics, Voltage Regulator 18V HSOP 8-Pin

RS Stock No.:: 188-9210
Mfr. Part No.:: ST1S40IPHR
Brand:: STMicroelectronics

STMicroelectronics, Voltage Regulator 18V HSOP 8-Pin

This image is representative of the product range

Bulk discount available

Subtotal (1 reel of 2500 units)*

$6,940.00

(exc. GST)

$7,980.00

(inc. GST)

FREE delivery for orders over $60.00 ex GST

Temporarily out of stock

Shipping from 02 April 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Reel*
2500 - 2500	$2.776	$6,940.00
5000 - 7500	$2.706	$6,765.00
10000 +	$2.665	$6,662.50

*price indicative

RS Stock No.:: 188-9210
Mfr. Part No.:: ST1S40IPHR
Brand:: STMicroelectronics

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	STMicroelectronics
	Product Type	Voltage Regulator
	Package Type	HSOP
	Polarity	Positive
	Mount Type	Surface
	Quiescent Current	15μA
	Pin Count	8
	Length	5mm
	Width	4 mm
	Height	1.55mm
	Standards/Approvals	No
	Maximum Input Voltage	18V
	Minimum Input Voltage	4V
	Maximum Operating Temperature	150°C
	Automotive Standard	No

	Select all
	Brand STMicroelectronics
	Product Type Voltage Regulator
	Package Type HSOP
	Polarity Positive
	Mount Type Surface
	Quiescent Current 15μA
	Pin Count 8
	Length 5mm
	Width 4 mm
	Height 1.55mm
	Standards/Approvals No
	Maximum Input Voltage 18V
	Minimum Input Voltage 4V
	Maximum Operating Temperature 150°C
	Automotive Standard No

Datasheet ST1S40IPHR

The ST1S40 device is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S40 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN. The ST1S40 integrates a 95 mΩ high side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages. The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. The ST1S40 is available in HSOP-8, VFQFPN 4 mm x 4 mm - 8 lead, and standard SO8 package.

3 A DC output current

4.0 V to 18 V input voltage

Output voltage adjustable from 0.8 V

850 kHz switching frequency

Internal soft-start

Integrated 95 mΩ and 69 mΩ Power MOSFETs

All ceramic capacitor

Enable

Cycle-by-cycle current limiting

Current fold back short-circuit protection

Available in HSOP-8, VFQFPN4x4-8L, and SO8 packages

Applications

μP/ASIC/DSP/FPGA core and I/O supplies

Point of load for: STB, TVs, DVD

Optical storage, hard disk drive, printers, audio/graphic cards

STMicroelectronics, Voltage Regulator 18V HSOP 8-Pin

FREE delivery for orders over $60.00 ex GST

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