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參數(shù)資料
| 型號： | RT9206PS |
| 廠商： | Richtek Technology Corporation |
| 英文描述： | High Efficiency, Synchronous Buck with Dual Linear Controllers |
| 中文描述： | 高效率，雙直線同步降壓控制器 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大小： | 351K |
| 代理商： | RT9206PS |
RT9206
DS9206-11 March 2007
www.richtek.com
7
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
PWM Section Reference Voltage
Feedback Voltage
V
FB
0.784
0.8
0.816
V
Internal Voltage
V
INT
I
INT
= 10mA
5.0
6
6.5
V
Internal Voltage Source Current
PWM Section
Oscillator
Free Run Frequency
I
INT
V
IN
= 12V
20
--
--
mA
F
OSC
160
200
240
kHz
Operation Frequency Setting
F
OSC
By setting RT (Note 5)
-30
--
+30
%
Ramp Amplitude
--
1.9
--
V
Maximum Duty Cycle
85
90
--
%
Error Amplifier
GM
--
1.6
--
ms
Compensation Source Current
45
90
140
μ
A
Compensation Sink Current
45
90
140
μ
A
Gate Driver
Upper Gate Source (UGATE1 & 2)
R
UGATE
--
5
8
ns
ns
ns
ns
Upper Gate Sink (UGATE1 & 2)
R
UGATE
--
5
8
Lower Gate Source (LGATE1 & 2)
R
LGATE
--
3
5
Lower Gate Sink (LGATE1 & 2)
R
LGATE
--
1.5
3
Upper Gate Rising Time
T
R_UGATE
V
DD
= 12V, C
LOAD
= 3nF
--
30
--
Upper Gate Falling Time
T
F_UGATE
V
DD
= 12V, C
LOAD
= 3nF
--
30
--
Lower Gate Rising Time
T
R_LGATE
V
DD
= 12V, C
LOAD
= 3nF
--
30
--
Lower Gate Falling Time
T
F_LGATE
V
DD
= 12V, C
LOAD
= 3nF
--
30
--
Minimum On Time
--
--
400
ns
Protection
Over Current Threshold
-270
-300
-330
mV
Over Voltage Protection
VFB
0.9
1
1.1
V
Under Voltage Protection
Linear Controller Section
Error Amplifier
Feedback Voltage
VFB
0.54
0.6
0.66
V
LFB1 / LFB2
0.780
0.8
0.824
V
Output Current
LDRV1/LDRV2
10
--
--
mA
Protection
Under Voltage Protection
LFB1 / LFB2
0.54
0.6
0.66
V
Over Temperature Protection
125
170
--
°
C
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