rt8100 Richtek Technology Corporation, rt8100 Datasheet - Page 9

• Manufacturer Part Number: rt8100
• Description: Synchronous Buck Dc/dc With Dual Voltage Control Mode
• Manufacturer: Richtek Technology Corporation

(200mV/Div)
Typical Operating Characteristics
DS8100-03 August 2007
(10V/Div)
(10V/Div)
(10A/Div)
V
UGATE
LGATE
OUT
(5V/Div)
I
Load
90.5
81.5
72.5
63.5
54.5
95
86
77
68
59
50
0
Load Transient Regulation (Rising)
V
Efficiency vs. Output Current
IN
= 12V
5
Dead Time (Rising)
Output Current (A)
Time (25ns/Div)
Time (10us/Div)
10
V
IN
= 5V
15
UGATE
20
−
PHASE
UGATE
PHASE
LGATE
Preliminary
25
(200mV/Div)
(10V/Div)
(10V/Div)
(10A/Div)
V
UGATE
LGATE
(5V/Div)
OUT
I
Load
1000
900
800
700
600
500
400
300
200
100
0
1
UGATE
PHASE
UGATE
LGATE
Load Transient Regulation (Falling)
−
PHASE
10
Dead Time (Falling)
Frequency vs. R
R
RT
Time (25ns/Div)
Time (50us/Div)
connected to GND
R
RT
100
(k π )
(kΩ)
R
RT
RT8100
connected to 5VSB
www.richtek.com
RT
1000
10000
9