RT8004 RICHTEK [Richtek Technology Corporation], RT8004 Datasheet - Page 7

• Manufacturer Part Number: RT8004
• Description: 3A, 4MHz, Synchronous Step-Down Regulator
• Manufacturer: RICHTEK [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. The specifications over the -40°C to 85°C operation ambient temperature range are assured by design, characterization
Note 6. The external synchronous frequency must be equal to 1 to 1.3 times of the internal setting frequency. The switching
DS8004-03
Switching Frequency
Sync Frequency Range
Switch On Resistance, High
Switch On Resistance, Low
Peak Current Limit
Undervoltage Lockout Threshold
SW Leakage Current
EN/SS Leakage Current
Enable Threshold
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 51-7 thermal measurement standard. The case point of θ
and correlation with statistical process controls.
frequency reange is guaranteed by design but not production tested.
JA
is measured in the natural convection at T
September 2007
Parameter
f
V
OSC
R
R
I
LIM
EN
Symbol
PFET
NFET
A
= 25°C
R
Switching Frequency Range
(Note 6)
I
I
VDD Rising
Hysteresis
V
SW
SW
EN
OSC
= 1A
= 1A
= 0V, V
Test Conditions
= 309k
on 4-layers high effective thermal conductivity test board of
IN
= 5.5V
JC
is on the expose pad for the QFN package.
2.25
0.65
Min
0.8
0.3
0.3
45
45
--
--
--
4
2.52
0.15
Typ
5.2
75
69
--
--
--
--
--
1
RT8004
www.richtek.com
Max
0.95
110
100
1.2
2.7
--
4
4
7
1
1
Units
MHz
MHz
MHz
mΩ
mΩ
μA
μA
A
V
V
V
7