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ST1S40IPHR
Integrated Circuits (ICs)

ST1S40IPHR

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STMicroelectronics

CONV DC-DC SINGLE STEP DOWN 4V TO 18V 8-PIN HSOP EP

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ST1S40IPHR
Integrated Circuits (ICs)

ST1S40IPHR

Active
STMicroelectronics

CONV DC-DC SINGLE STEP DOWN 4V TO 18V 8-PIN HSOP EP

Deep-Dive with AI

Documents+8

Technical Specifications

Parameters and characteristics for this part

SpecificationST1S40IPHR
Current - Output3 A
Frequency - Switching850 kHz
FunctionStep-Down
Mounting TypeSurface Mount
Number of Outputs1
Operating Temperature [Max]150 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output TypeAdjustable
Package / CaseExposed Pad, 8-SOIC
Package / Case [x]0.154 in
Package / Case [y]3.9 mm
Supplier Device Package8-HSOP
Synchronous RectifierTrue
TopologyBuck
Voltage - Input (Max) [Max]18 V
Voltage - Input (Min) [Min]4 V
Voltage - Output (Max) [Max]18 V
Voltage - Output (Min/Fixed)0.8 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyN/A 16532$ 2.01
NewarkEach 1$ 1.50
10$ 1.18
100$ 1.11
500$ 1.04
1000$ 0.98
2500$ 0.93
5000$ 0.92

Description

General part information

ST1S40 Series

The ST1S40 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. 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.