rt9232b Richtek Technology Corporation, rt9232b Datasheet - Page 7

• Manufacturer Part Number: rt9232b
• Description: Programmable Frequency Synchronous Buck Controller
• Manufacturer: Richtek Technology Corporation

(500mV/Div)
Typical Operating Characteristics
DS9232B-03 March 2007
COMP
(10V/Div)
(10V/Div)
(2V/Div)
(2V/Div)
(1A/Div)
(2V/Div)
(2V/Div)
V
EN
V
EN
SS
SS
OUT
OUT
I
L
100
90
80
70
60
50
0
V
V
V
IN
IN
IN
Efficiency vs. Output Current
= 3.3V
= 5V
= 12V
5
Output Current (A)
Time (10ms/Div)
Time (25ms/Div)
Power On
Power On
10
15
V
f = 300kHz
OUT
20
= 1.6V
25
(500mV/Div)
(10V/Div)
(20V/Div)
(10V/Div)
(10A/Div)
V
UGATE
LGATE
(2V/Div)
(2V/Div)
(1A/Div)
OUT
V
EN
SS
I
OUT
I
L
10000
L
1000
100
10
1
0
Pull high to V
100
R
RT
vs. Oscillator Frequency
200
CC
Time (10ms/Div)
Frequency (kHz)
Time (10μs/Div)
Power On
Power Off
12
300
Pull down to GND
400
RT9232B
www.richtek.com
500
600
700
7