RT9193-18GB Richtek USA Inc, RT9193-18GB Datasheet - Page 9

• Manufacturer Part Number: RT9193-18GB
• Description: IC REG LDO 1.8V 300MA SOT23-5
• Manufacturer: Richtek USA Inc

Specifications of RT9193-18GB

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.8V
• Voltage - Input: 2.5 V ~ 5.5 V
• Number Of Regulators: 1
• Current - Output: 300mA (Max)
• Current - Limit (min): 360mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-74A, SOT-753
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Other names: 1028-1016-2

For recommended operating conditions specification of
RT9193, where T
temperature of the die (125°C) and T
ambient temperature. The junction to ambient thermal
resistance (θ
SOT-23-5 package is 250°C/W, SC-70-5 package is
333°C/W, WDFN-6L 2x2 package is 165°C/W and MSOP-
8 package is 160°C/W on standard JEDEC 51-3 thermal
test board. The maximum power dissipation at T
can be calculated by following formula :
P
SC-70-5
P
TSOT-23-5/SOT-23-5
P
WDFN-6L 2x2
P
MSOP-8
The maximum power dissipation depends on operating
ambient temperature for fixed T
resistance θ
derating curves allows the designer to see the effect of
rising ambient temperature on the maximum power
allowed.
DS9193-12 February 2009
D(MAX)
D(MAX)
D(MAX)
D(MAX)
700
600
500
400
300
200
100
= (125°C − 25°C) / 333 = 300mW for
= (125°C − 25°C) / 250 = 400mW for
= (125°C − 25°C) / 165 = 606mW for
= (125°C −25°C) / 160 = 625mW for
0
Figure 2. Derating Curve for Packages
0
SC 70-5
MSOP-8
TSOT-23-5/
SOT-23-5
JA
JA
. For RT9193 packages, the Figure 2 of
is layout dependent) for TSOT-23-5/
25
Ambient Temperature (°C)
J(MAX)
WDFN-6L 2x2
50
is the maximum junction
J(MAX)
75
A
is the maximum
and thermal
100
A
= 25°C
125
RT9193
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