rt9232a Richtek Technology Corporation, rt9232a Datasheet - Page 6

• Manufacturer Part Number: rt9232a
• Description: Programmable Frequency Synchronous Buck Controller
• Manufacturer: Richtek Technology Corporation

RT9232A
Typical Operating Characteristics
www.richtek.com
6
(5V/Div)
100
90
80
70
60
50
0
Loading = 0A
UGATE
LGATE
UGATE (10V/Div)
FB (500mV/Div)
V
SS (5V/Div)
CC
V
V
V
IN
IN
IN
Efficient vs. Output Current
5
= EN (2V/Div)
= 5V
= 3.3V
= 12V
PHASE
VGS
10
Time (20ms/Div)
Output Current (A)
Time (25ns/Div)
Dead Time
UVP
15
20
25
30
(5V/Div)
1000
100
10
1
0
LGATE
PHASE
UGATE
V
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OUT
100
R
RT
Bootstrap Wave Form
200
vs. Oscillator Frequency
Pull high to V
Pull down to GND
Frequency (kHz)
Time (25ns/Div)
Time (1us/Div)
300
(500mV/Div)
(5V/Div)
(5V/Div)
(5V/Div)
Dead Time
DS9232A-02 March 2007
400
CC
500
PHASE
VGS
600
700
UGATE
LGATE
800