RT8282B RICHTEK [Richtek Technology Corporation], RT8282B Datasheet - Page 4

• Manufacturer Part Number: RT8282B
• Description: 2A, 23V, 1.2MHz Synchronous Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT8282B
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
(V
www.richtek.com
4
Shutdown Supply Current
Supply Current
Feedback Voltage
Error Amplifier
Transconductance
High Side Switch
On-Resistance
Low Side Switch
On-Resistance
High Side Switch Leakage
Current
Upper Switch Current Limit
Lower Switch Current Limit
COMP to Current Sense
Transconductance
Oscillation Frequency
Short Circuit Oscillation
Frequency
Maximum Duty Cycle
Minimum On Time
Supply Voltage, V
Input Voltage, SW --------------------------------------------------------------------------------------------------- −0.3V to (V
V
Power Dissipation, P
SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 1.333W
SOP-8 (Exposed Pad), θ
SOP-8 (Εxposed Pad), θ
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------- 260°C
Junction Temperature ----------------------------------------------------------------------------------------------- 150°C
Storage Temperature Range -------------------------------------------------------------------------------------- −40°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------ 200V
Supply Voltage, V
Junction Temperature Range -------------------------------------------------------------------------------------- −40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------------- −40°C to 85°C
IN
Package Thermal Resistance (Note 2)
Other Pin Voltages ------------------------------------------------------------------------------------------------- −0.3V to 6V
BOOT
= 12V, T
- V
Parameter
SW
A
= 25°C, unless otherwise specified)
----------------------------------------------------------------------------------------------------------- −0.3V to 6V
IN
IN
-------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------- 4.5V to 23V
D
@ T
JA
JC
---------------------------------------------------------------------------------------- 75°C/W
A
--------------------------------------------------------------------------------------- 15°C/W
= 25°C
V
GEA
R
R
G
F
F
D
t
ON
Symbol
OSC1
OSC2
FB
DS(ON)1
DS(ON)2
MAX
CS
V
From Drain to Source
V
4.5V ≤ V
ΔIC = ± 10μA
V
Min. Duty Cycle, V
V
V
(Note 1)
EN
EN
EN
FB
FB
= 3 V, V
= 0V
= 0.7V
= 0V
= 0V, V
IN
Test Conditions
≤ 23V
SW
FB
= 0.9V
= 0V
(Note 4)
BOOT
− V
SW
= 4.8V
0.788
Min
3.5
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1
DS8282B-01 March 2011
Typ
940
130
130
300
100
0.5
0.8
0.8
4.5
1.2
1.2
75
0
5
−
0.3V to 25V
To be continued
0.812
Max
1.2
1.4
10
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3
IN
+ 0.3V)
Unit
μA/V
kHz
mΩ
mΩ
A/V
mA
μHz
ns
μA
μA
%
V
A
A