RT9020-15GU5 Richtek USA Inc, RT9020-15GU5 Datasheet - Page 8

• Manufacturer Part Number: RT9020-15GU5
• Description: IC REG LDO 1.5V 500MA SC70-5
• Manufacturer: Richtek USA Inc

Specifications of RT9020-15GU5

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.5V
• Voltage - Input: 2.2 V ~ 5.5 V
• Voltage - Dropout (typical): 0.25V @ 500mA
• Number Of Regulators: 1
• Current - Output: 500mA (Max)
• Current - Limit (min): 500mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-TSSOP (5 lead), SC-88A, SOT-353
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RT9020
Where T
temperature, T
the junction to ambient thermal resistance.
For recommended operating conditions specification of
RT9020, where T
temperature of the die (125°C) and T
ambient temperature. The junction to ambient thermal
resistance θ
package is 250°C/W and SC-70-5 package is 333°C/W
on the standard JEDEC 51-3 single-layer thermal test
board. The maximum power dissipation at T
be calculated by following formula :
P
packages
P
packages
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.
www.richtek.com
8
D(MAX)
D(MAX)
Figure 2. Derating Curves for RT9020 Packages
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
= (125°C − 25°C) / 250 = 0.400 W for SOT-23-5
= (125°C − 25°C) / 333 = 0.300 W for SC-70-5
0
J(MAX)
SOT-23-5
SC-70-5
12.5 25 37.5 50 62.5 75 87.5 100 113 125
JA
JA
. For RT9020 packages, the Figure 2 of
A
(θ
is the ambient temperature and the θ
is the maximum operation junction
JA
is layout dependent) for SOT-23-5
J(MAX)
Ambient Temperature (°C)
is the maximum junction
J(MAX)
Single Layer PCB
A
is the operated
and thermal
A
= 25°C can
JA
is
DS9020-03 June 2009