rt8009 Richtek Technology Corporation, rt8009 Datasheet - Page 5

• Manufacturer Part Number: rt8009
• Description: 1.25mhz, 600ma, High Efficiency Step-down Dc/dc Converter
• Manufacturer: Richtek Technology Corporation

Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for
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
Note 5. ΔV = I
DS8009-03 March 2007
Oscillator Frequency
Output Voltage
Accuracy
FB Input Current
R
R
P-Channel Current Limit
EN High-Level Input Voltage
EN Low-Level Input Voltage
Undervoltage Lock Out threshold
Hysteresis
Thermal Shutdown Temperature T
Min. On Time
Max. Duty Cycle
LX Leakage Current
DS (ON)
DS (ON)
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.
JEDEC 51-3 thermal measurement standard.
of P-Channel MOSFET
of N-Channel MOSFET
JA
is measured in the natural convection at T
OUT
x R
Parameter
DS(ON)_P
Adjustable
ΔV
I
R
R
I
V
V
f
FB
LIM_P
OSC
Symbol
EN_H
EN_L
SD
DS (ON)_P
DS (ON)_N
OUT
V
V
0A < I
V
I
I
V
V
V
V
OUT
OUT
IN
IN
IN
IN
IN
IN
FB
= 3.6V, I
= 3.6V, V
= V
= 2.5V to 5.5 V
= 2.5V to 5.5V
= 2.5V to 5.5V
= V
= 200mA
= 200mA
OUT
A
OUT
IN
= 25°C on a low effective thermal conductivity test board of
Test Conditions
< 600mA
+ ΔV to 5.5V
O UT
L X
= 0V or V
= 100mA
V
V
V
V
IN
IN
IN
IN
= 3.6V
= 2.5V
= 3.6V
= 2.5V
LX
(Note 5)
= 3.6V
Min
−50
100
1.5
0.8
−
-1
--
--
--
--
1
--
--
--
--
--
3
0.25
0.35
1.25
Typ
160
0.3
0.4
1.8
0.1
50
--
--
--
--
--
--
--
RT8009
www.richtek.com
Max
0.65
0.80
0.55
0.65
1.85
1.8
0.4
+3
50
--
--
--
--
--
--
1
Units
MHz
μA
nA
°C
ns
%
Ω
Ω
%
A
V
V
V
V
5