RT9164A-18GM Richtek USA Inc, RT9164A-18GM Datasheet - Page 11
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RT9164A-18GM
Manufacturer Part Number
RT9164A-18GM
Description
IC REG LDO 1.8V 1A TO263
Manufacturer
Richtek USA Inc
Datasheet
1.RT9164A-15GG.pdf
(14 pages)
Specifications of RT9164A-18GM
Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
Up to 14V
Voltage - Dropout (typical)
1.3V @ 1A
Number Of Regulators
1
Current - Output
1A (Max)
Current - Limit (min)
1A
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TO-263-4, D²Pak (3 leads + Tab), TO-263AA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
RT9164A-18GM
Manufacturer:
RICHTEK
Quantity:
20 000
Thermal Protection
RT9164A has thermal protection which limits junction
temperature to 150°C. However, device functionality is only
guaranteed to a maximum junction temperature of 125°C.
The power dissipation and junction temperature for RT9164A
are given by
Current Limit Protection
RT9164A is protected against overload conditions. Current
protection is triggered at typically 1.8A.
Thermal Consideration
The RT9164A 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.
DS9164A-14 April 2010
Note: T
P
T
V
IN
JUNCTION
D
Figure 6. Best Load Regulation Using Adjustable
= (V
JUNCTION
IN
− V
= T
VIN
OUT
AMBIENT
RT9164A
must not exceed 125 ° C
) x I
ADJ
+ (P
VOUT
OUT
Output Regulator
D
x θ
R
Line Resistance
JA
P
Parasitic
)
(Connect R1 to VOUT
or case)
R1
R2
Connect R2 to load
R
L
RT9164A
www.richtek.com
11