參數(shù)資料
型號(hào): RT8020DPQW
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(zhuǎn)換器
文件頁數(shù): 5/14頁
文件大小: 229K
代理商: RT8020DPQW
RT8020
5
DS8020-03 August 2007
www.richtek.com
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Output Voltage
Accuracy
Adjustable
V
OUT
V
IN
= V
OUT
+
V to 5.5V (Note 5)
0A < I
OUT
< 1A
3
--
+3
%
FB Input Current
I
FB
V
FB
= V
IN
50
--
--
50
nA
V
IN
= 2.5V
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 3.6V
0.38
--
R
DS(ON)
of P-MOSFET
R
DS(ON)_P
I
OUT
= 200mA
--
0.28
--
--
0.35
--
R
DS(ON)
of N-MOSFET
R
DS(ON)_N
I
OUT
= 200mA
--
0.25
--
P-Channel Current Limit
I
LIM_P
V
IN
= 2.5V to 5.5 V
1.4
1.5
2
A
EN High-Level Input Voltage
V
EN_H
V
IN
= 2.5V to 5.5V
1.5
--
V
IN
EN Low-Level Input Voltage
V
EN_L
V
IN
= 2.5V to 5.5V
--
--
0.4
V
Oscillator Frequency
f
OSC
V
IN
= 3.6V, I
OUT
= 100mA
1.2
1.5
1.8
MHz
Thermal Shutdown Temperature T
SD
--
160
--
°
C
Maximum Duty Cycle
100
--
--
%
LX Leakage Current
I
LX
V
IN
= 3.6V, V
LX
= 0V or V
LX
= 3.6V
1
--
1
μ
A
Note 1.
Stresses listed as the above
Absolute Maximum Ratings
may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
Note 2.
Devices are ESD sensitive. Handling precaution recommended.
Note 3.
The device is not guaranteed to function outside its operating conditions.
Note 4.
θ
JA
is measured in the natural convection at T
A
= 25
°
C on a high effective four layers thermal conductivity test board of
JEDEC 51-7 thermal measurement standard.
Note 5.
V = I
OUT
x P
RDS(ON)
Note 6.
Guarantee by design.
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