RT9164C-33GG Richtek USA Inc, RT9164C-33GG Datasheet - Page 9

• Manufacturer Part Number: RT9164C-33GG
• Description: IC REG LDO 3.3V 1A SOT223
• Manufacturer: Richtek USA Inc

Specifications of RT9164C-33GG

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 12V
• Voltage - Dropout (typical): 1.3V @ 1A
• Number Of Regulators: 1
• Current - Output: 1A (Max)
• Current - Limit (min): 1A
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TO-261-4, TO-261AA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

P
T
Current Limit Protection
RT9164C is protected against overload conditions. Current
protection is triggered at typically 1.8A.
Thermal Consideration
The RT9164C series contain thermal limiting circuitry
designed to protect itself from over-temperature conditions.
Even for normal load conditions, maximum junction
temperature ratings must not be exceeded. As mention in
thermal protection section, we need to consider all sources
of thermal resistance between junction and ambient. It
includes junction-to-case, case-to-heat-sink interface, and
heat sink thermal resistance itself.
Junction-to-case thermal resistance is specified from the
IC junction to the bottom of the case directly below the
die. Proper mounting is required to ensure the best possible
thermal flow from this area of the package to the heat
sink. The case of all devices in this series is electrically
connected to the output. Therefore, if the case of the device
must be electrically isolated, a thermally conductive spacer
is recommended.
DS9164C-02 April 2010
JUNCTION
Note : T
D
= (V
IN
JUNCTION
− V
= T
OUT
AMBIENT
) x I
must not exceed 125° ° ° ° ° C
OUT
+ (P
D
x θ
JA
)
RT9164C
www.richtek.com
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