RT9179GB footprint, schematic symbol and 3D model by RICHTEK

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Datasheet Download Datasheet
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Part Number RT9179GB
Manufacturer RICHTEK
Pin Count 5
Part Category Integrated Circuit
Package Category SOT23 (5-Pin)
Footprint Name SOT23 (5-Pin) - SOT-23-5.....
Released Date Apr 30, 2026
Last Modified Date Apr 30, 2026 6:39 AM UTC
Pinout / Pin List Click Here (Member Only)

RT9179GB Details

Manufacturer Part Number:
RT9179GB
Pbfree Code:
Yes
Rohs Code:
Yes
Part Life Cycle Code:
End Of Life
Part Package Code:
SOT23-5
Pin Count:
5
Manufacturer Package Code:
SOT23-5
ECCN Code:
EAR99
HTS Code:
8542.39.00.60
Manufacturer:
Richtek Technology Corp
YTEOL:
0
JESD-30 Code:
R-PDSO-G5
Length:
2.8955 mm
Number of Functions:
1
Number of Terminals:
5
Operating Temperature TJ-Max:
125 °C
Operating Temperature TJ-Min:
-40 °C
Output Current1-Max:
0.3 A
Output Voltage1-Max:
4.5 V
Output Voltage1-Min:
1.175 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
LSSOP
Package Equivalence Code:
TSOP5/6,.11,37
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
NOT SPECIFIED
Regulator Type:
ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
Seated Height-Max:
1.295 mm
Surface Mount:
YES
Terminal Form:
GULL WING
Terminal Pitch:
0.93 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
NOT SPECIFIED
Width:
1.6 mm

RT9179GB Frequently Asked Questions (FAQs)

A 4-layer PCB with a solid ground plane and thermal vias is recommended. Keep the thermal pad connected to the ground plane and ensure good thermal conduction to the surrounding components.
Use a high-quality output capacitor with low ESR, ensure the input voltage is within the recommended range, and add a 10nF-100nF ceramic capacitor between the VOUT and GND pins to filter out noise.
Although the datasheet specifies a maximum input voltage of 18V, it's recommended to limit the input voltage to 15V to ensure reliable operation and prevent damage to the internal components.
The RT9179GB is rated for operation up to 85°C, but it's recommended to derate the output current and ensure good airflow to prevent overheating. Consider using a heat sink or thermal interface material to improve heat dissipation.
Check the input voltage, output voltage, and current consumption. Verify the PCB layout and component placement. Use an oscilloscope to check for noise and oscillations. Consult the datasheet and application notes for guidance.

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RT9179GB Overview

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