STMicroelectronics ST1S40IPHR, 1 Linear Voltage, Voltage Regulator 3A, 0.8 → 1.8 V 8-Pin, HSOP

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Subtotal (1 reel of 2500 units)*

£2,595.00

(exc. VAT)

£3,115.00

(inc. VAT)

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  • 999,997,500 unit(s) shipping from 05 February 2026
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Units
Per unit
Per Reel*
2500 +£1.038£2,595.00

*price indicative

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

STMicroelectronics

Regulator Type

Linear Voltage

Maximum Output Current

3A

Output Voltage

0.8 → 1.8 V

Number of Outputs

1

Line Regulation

0.4 %

Load Regulation

0.5 Typ.) %

Mounting Type

Surface Mount

Quiescent Current

15µA

Package Type

HSOP

Pin Count

8

Output Type

Adjustable

Dimensions

5 x 4 x 1.55mm

Minimum Input Voltage

4 V

Height

1.55mm

Minimum Operating Temperature

-40 °C

Maximum Operating Temperature

+150 °C

Maximum Input Voltage

18 V

Width

4mm

Length

5mm

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

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