VIPER35LE footprint, schematic symbol and 3D model by STMicroelectronics

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Part Number VIPER35LE
Manufacturer STMicroelectronics
Pin Count 16
Part Category Integrated Circuit
Package Category Small Outline Packages
Footprint Name Small Outline Packages - SO16N mechanical data....
Released Date Apr 16, 2026
Last Modified Date Apr 16, 2026 10:57 AM UTC
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VIPER35LE Details

Manufacturer Part Number:
VIPER35LE
Brand Name:
STMicroelectronics
Rohs Code:
Yes
Part Life Cycle Code:
Obsolete
Package Description:
SDIP-10
Manufacturer Package Code:
SDIP 10
ECCN Code:
EAR99
HTS Code:
8542.39.00.60
Manufacturer:
STMicroelectronics
YTEOL:
0
Additional Feature:
SUPPLY VOLTAGE FROM 8.5V TO 23.5 V
Analog IC - Other Type:
SWITCHING CONTROLLER
Control Mode:
CURRENT/VOLTAGE-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
23.5 V
Input Voltage-Min:
8.5 V
JESD-30 Code:
R-PDIP-T10
Length:
9.59 mm
Number of Functions:
1
Number of Terminals:
10
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Output Current-Max:
1.05 A
Package Body Material:
PLASTIC/EPOXY
Package Code:
SDIP
Package Equivalence Code:
DIP10,.3,69
Package Shape:
RECTANGULAR
Package Style:
IN-LINE, SHRINK PITCH
Peak Reflow Temperature (Cel):
NOT SPECIFIED
Seated Height-Max:
5.33 mm
Supply Current-Max (Isup):
25 mA
Supply Voltage-Nom (Vsup):
14 V
Surface Mount:
NO
Switcher Configuration:
BUCK-BOOST
Switching Frequency-Max:
150 kHz
Terminal Form:
THROUGH-HOLE
Terminal Pitch:
1.77 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
NOT SPECIFIED
Width:
7.62 mm

VIPER35LE Frequently Asked Questions (FAQs)

STMicroelectronics provides a recommended PCB layout in the VIPER35LE application note (AN4571) which includes guidelines for component placement, thermal management, and routing to minimize electromagnetic interference (EMI) and ensure reliable operation.
The transformer selection depends on the input voltage, output voltage, and power rating of the VIPER35LE. STMicroelectronics provides a transformer selection guide in the VIPER35LE datasheet, and also recommends consulting with transformer manufacturers for custom designs.
The VIPER35LE has a high power density, and thermal management is critical to ensure reliable operation. Engineers should consider using a heat sink, thermal interface material, and ensuring good airflow around the device. The junction-to-case thermal resistance (RthJC) is specified in the datasheet.
The VIPER35LE has built-in OVP and UVP features, but engineers can also implement external protection circuits using resistors, zener diodes, and comparators. The VIPER35LE application note (AN4571) provides examples of OVP and UVP circuits.
The VIPER35LE is designed to meet EMC standards, but engineers should still consider implementing EMI filters, shielding, and grounding techniques to minimize electromagnetic radiation and ensure compliance with regulatory requirements.

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VIPER35LE Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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