RT8055GQW Richtek USA Inc, RT8055GQW Datasheet - Page 4

• Manufacturer Part Number: RT8055GQW
• Description: IC DCDC CONV STP-DN SYNC 10WDFN
• Manufacturer: Richtek USA Inc
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of RT8055GQW

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 5 V
• Current - Output: 3A
• Frequency - Switching: 300kHz ~ 2MHz
• Voltage - Input: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-WFDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RT8055
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
(V
www.richtek.com
4
Parameter
Input Voltage Range
Feedback Reference Voltage
Feedback Leakage Current
DC Bias Current
Output Voltage Line Regulation
Output Voltage Load Regulation ΔV
Error Amplifier
Transconductance
Current Sense Transresistance
RT Leakage Current
Switching Frequency
SOP-8 (Exposed Pad) ------------------------------------------------------------------------------------------- 1.333W
SOP-8 (Exposed Pad), θ
Supply Input Voltage, VDD, PVDD ---------------------------------------------------------------------------- −0.3V to 6.5V
LX Pin Switch Voltage -------------------------------------------------------------------------------------------- −0.3V to (PVDD + 0.3V)
<30ns ---------------------------------------------------------------------------------------------------------------- −5V to 7.5V
Other I/O Pin Voltages ------------------------------------------------------------------------------------------- −0.3V to 6.5V
LX Pin Switch Current -------------------------------------------------------------------------------------------- 4A
Power Dissipation, P
WDFN-10L 3x3 ----------------------------------------------------------------------------------------------------- 1.667W
Package Thermal Resistance (Note 2)
WDFN-10L 3x3, θ
WDFN-10L 3x3, θ
SOP-8 (Exposed Pad), θ
Junction Temperature --------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------- 260°C
Storage Temperature Range ------------------------------------------------------------------------------------ −65°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Mode) -------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ---------------------------------------------------------------------------------------------- 200V
Supply Input Voltage ---------------------------------------------------------------------------------------------- 2.6V to 5.5V
Junction Temperature Range ------------------------------------------------------------------------------------ −40°C to 125°C
Ambient Temperature Range ------------------------------------------------------------------------------------ −40°C to 85°C
DD
= 3.3V, T
A
= 25°C, unless otherwise specified)
JA
JC
----------------------------------------------------------------------------------------------- 60°C/W
----------------------------------------------------------------------------------------------- 7.8°C/W
D
@ T
JA
JC
A
------------------------------------------------------------------------------------- 75°C/W
------------------------------------------------------------------------------------- 15°C/W
= 25°C
V
R
V
I
ΔV
gm
FB
Symbol
DD
REF
S
LINE
LOAD
(Note 1)
V
Active , V
Shutdown
V
V
I
SHDN/RT = V
R
Adjustable Switching Frequency
Range
OUT
FB
IN
IN
OSC
= 2.6V to 5.5V
= 5V, V
= 3.3V
= 0A to 3A
= 180kΩ
FB
Test Conditions
OUT
(Note 4)
= 0.7V, Not Switching
IN
= 3.3V,
= 5.5V
0.784
1.44
Min
2.6
0.3
--
--
--
--
--
--
--
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DS8055-03 March 2011
Typ
500
400
0.8
0.1
0.4
0.4
1.8
--
--
--
--
--
To be continued
0.816
Max
2.16
5.5
0.1
--
--
--
--
--
1
1
2
μA/V
MHz
MHz
Unit
%/V
μA
μA
μA
μA
%
Ω
V
V