rt8020 Richtek Technology Corporation, rt8020 Datasheet - Page 4

• Manufacturer Part Number: rt8020
• Description: Dual High-efficiency Step-down Dc-dc Converter
• Manufacturer: Richtek Technology Corporation

www.richtek.com
4
RT8020
Absolute Maximum Ratings
l
l
l
l
l
l
l
l
Recommended Operating Conditions
l
l
l
Electrical Characteristics
(V
Channel 1 and Channel 2
Accuracy
Input Voltage Range
Under Voltage Lock Out
threshold
Hysteresis
Quiescent Current
Shutdown Current
Reference Voltage
Adjustable Output Voltage
Range
Output Voltage
Supply Input Voltage, V
EN1, FB1, LX1, EN2, FB2 and LX2 Pin Voltage -------------------------------------------------------------- 0.3V to V
Power Dissipation, P
WDFN-12L 3x3 ------------------------------------------------------------------------------------------------------- 1.667W
Package Thermal Resistance (Note 4)
WDFN-12L 3x3,
WDFN-12L 3x3,
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------- 260 C
Junction Temperature ----------------------------------------------------------------------------------------------- 150 C
Storage Temperature Range --------------------------------------------------------------------------------------- 65 C to 150 C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------ 200V
Supply Input Voltage ------------------------------------------------------------------------------------------------ 2.5V to 5.5V
Junction Temperature Range -------------------------------------------------------------------------------------- 40 C to 125 C
Ambient Temperature Range -------------------------------------------------------------------------------------- 40 C to 85 C
IN
= 3.6V, V
Parameter
OUT
= 2.5V, V
Fix
JA
JC
-------------------------------------------------------------------------------------------------- 60 C/W
------------------------------------------------------------------------------------------------- 8.2 C/W
D
@ T
REF
IN1
, V
= 0.6V, L = 2.2uH, C
A
= 25 C
IN2
Symbol
V
UVLO
I
I
V
V
Q
SHDN
V
V
V
V
V
IN
REF
OUT
---------------------------------------------------------------------------------- 0.3V to 6.5V
OUT
OUT
OUT
OUT
OUT
I
EN = GND
For Adjustable Output Voltage
(Note 6)
V
0A < I
V
0A < I
V
0A < I
V
V
V
V
OUT
IN
IN
IN
IN
OUT
IN
OUT
(Note 1)
= 2.5V to 5.5V, V
= 2.5V to 5.5V, V
= 2.5 to 5.5V, V
= V
= V
IN
= 0mA, V
OUT
OUT
OUT
= 2.5V, 0A < I
= 3.3V, 0A < I
= 4.7uF, C
OUT
OUT
Test Conditions
< 1A
< 1A
< 1A
+ V to 5.5V
+ V to 5.5V
FB
OUT
= V
(Note 3)
= 10uF, T
OUT
OUT
OUT
REF
OUT
OUT
= 1.8V
< 1A
< 1A
+ 5%
= 1.2V
= 1.3V
(Note 5)
(Note 5)
A
= 25° C, I
MAX
0.588
V
Min
2.5
REF
= 1A unless otherwise specified)
--
--
--
--
3
3
3
3
3
Typ
1.8
0.1
0.1
0.6
50
--
--
--
--
--
--
--
DS8020-03 August 2007
V
0.612
IN
Max
5.5
70
+3
+3
+3
+3
+3
To be continued
--
--
1
V
IN
Units
+ 0.3V
%
%
%
%
%
V
V
V
V
V
A
A