參數(shù)資料
型號： RT8020DGQW
廠商： Richtek Technology Corporation
元件分類： DC/DC變換器
英文描述： Dual High-Efficiency PWM Step-Down DC-DC Converter
中文描述： 雙高效率的PWM降壓型DC - DC轉換器
文件頁數(shù)： 4/14頁
文件大?。?/td> 229K
代理商： RT8020DGQW
RT8020
4
DS8020-03 August 2007
www.richtek.com
Absolute Maximum Ratings
(Note 1)
l
Supply Input Voltage, V
IN1
, V
IN2
----------------------------------------------------------------------------------
0.3V to 6.5V
l
EN1, FB1, LX1, EN2, FB2 and LX2 Pin Voltage --------------------------------------------------------------
0.3V to V
IN
+ 0.3V
l
Power Dissipation, P
D
@ T
A
= 25
°
C
WDFN-12L 3x3 -------------------------------------------------------------------------------------------------------1.667W
l
Package Thermal Resistance (Note 4)
WDFN-12L 3x3,
θ
JA
--------------------------------------------------------------------------------------------------60
°
C/W
WDFN-12L 3x3,
θ
JC
-------------------------------------------------------------------------------------------------8.2
°
C/W
l
Lead Temperature (Soldering, 10 sec.)--------------------------------------------------------------------------260
°
C
l
Junction Temperature -----------------------------------------------------------------------------------------------150
°
C
l
Storage Temperature Range ---------------------------------------------------------------------------------------
65
°
C to 150
°
C
l
ESD Susceptibility (Note 2)
HBM (Human Body Mode) -----------------------------------------------------------------------------------------2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------200V
Electrical Characteristics
(V
IN
= 3.6V, V
OUT
= 2.5V, V
REF
= 0.6V, L = 2.2uH, C
IN
= 4.7uF, C
OUT
= 10uF, T
A
= 25
°
C, I
MAX
= 1A unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Channel 1 and Channel 2
Input Voltage Range
V
IN
2.5
--
5.5
V
Under Voltage Lock Out
threshold
UVLO
--
1.8
--
V
Hysteresis
--
0.1
--
V
Quiescent Current
I
Q
I
SHDN
I
OUT
= 0mA, V
FB
= V
REF
+ 5%
EN = GND
--
50
70
μ
A
Shutdown Current
--
0.1
1
μ
A
Reference Voltage
V
REF
For Adjustable Output Voltage
0.588
0.6
0.612
V
Adjustable Output Voltage
Range
V
OUT
(Note 6)
V
REF
--
V
IN
V
V
V
OUT
V
IN
= 2.5V to 5.5V, V
OUT
= 1.2V
0A < I
OUT
< 1A
V
IN
= 2.5V to 5.5V, V
OUT
= 1.3V
0A < I
OUT
< 1A
V
IN
= 2.5 to 5.5V, V
OUT
= 1.8V
0A < I
OUT
< 1A
V
IN
= V
OUT
+
V to 5.5V (Note 5)
V
OUT
= 2.5V, 0A < I
OUT
< 1A
V
IN
= V
OUT
+
V to 5.5V (Note 5)
V
OUT
= 3.3V, 0A < I
OUT
< 1A
3
--
+3
%
V
OUT
3
--
+3
%
V
OUT
3
--
+3
%
V
OUT
3
--
+3
%
Output Voltage
Accuracy
Fix
V
OUT
3
--
+3
%
To be continued
Recommended Operating Conditions
(Note 3)
l
Supply Input Voltage ------------------------------------------------------------------------------------------------2.5V to 5.5V
l
Junction Temperature Range --------------------------------------------------------------------------------------
40
°
C to 125
°
C
l
Ambient Temperature Range --------------------------------------------------------------------------------------
40
°
C to 85
°
C
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