RT8004 RICHTEK [Richtek Technology Corporation], RT8004 Datasheet - Page 8

• Manufacturer Part Number: RT8004
• Description: 3A, 4MHz, Synchronous Step-Down Regulator
• Manufacturer: RICHTEK [Richtek Technology Corporation]

(10mV/Div)
RT8004
Typical Operating Characteristics
www.richtek.com
8
V
(2V/Div)
(2A/Div)
(1V/Div)
(1V/Div)
OUT
(1A/Div)
V
V
V
I
LX
100%
L
OUT
I
SS
90%
80%
70%
60%
50%
40%
30%
20%
10%
L
100
0%
90
80
70
60
50
40
30
20
10
0
0
V
R
V
IN
LOAD
IN
V
IN
= 3.3V, V
= 3.3V, V
V
= 3.3V
500
V
Efficiency vs. Output Current
= 0.83Ω
IN
OUT
= 5V
= 2.5V, 1M Continuous Mode Operation
Soft-Star Power On
OUT
OUT
1000
Output Current (mA)
Ripple Voltage
Time (500ns/Div)
Time (2.5ms/Div)
= 2.5V, I
= 2.5V
1500
OUT
= 3A
2000
2500
3000
(50mV/Div)
(2V/Div)
(2V/Div)
(2A/Div)
(5V/Div)
V
V
V
V
(1A/Div)
-0.10%
-0.20%
OUT
OUT
0.30%
0.20%
0.10%
0.00%
I
LX
L
IN
-0.10
-0.20
0.30
0.20
0.10
I
L
0
50
V
V
V
I
LOAD
IN
IN
IN
= 3.3V, V
= 3.3V, V
= 3.3V, V
550
= No Load to 3A
Load Transien Response
OUT
OUT
OUT
1050
Output Current (mA)
Load Regulation
Time (25ms/Div)
= 2.5V
Time (25μs/Div)
= 2.5V, I
= 2.5V
DS8004-03
Power Off
1550
OUT
= 0A
2050
September 2007
2550
3050