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參數(shù)資料
| 型號(hào)： | US3012ACW |
| 廠商： | Unisem Group |
| 英文描述： | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC |
| 中文描述： | 5位可編程同步降壓控制器芯片 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 75K |
| 代理商： | US3012ACW |
US3012/3012A
4-3
Rev. 1.0
5/6/98
UVLO Section
UVLO Threshold-12V
UVLO Hysterises-12V
UVLO Threshold-5V
UVLO Hysterises-5V
Error Comparator Section
Input bias current
Input Offset Voltage
Delay to Output
Current Limit Section
C.S Threshold Set Current
C.S Comp Offset Voltage
Hiccup Duty Cycle
Supply Current
Operating Supply Current
Supply ramping up
9.2
0.3
4.1
0.2
10
0.4
4.3
0.3
10.8
0.5
4.5
0.4
V
V
V
V
Supply ramping up
2
+2
100
uA
mV
nS
-2
Vdiff=10mV
160
-5
200
240
+5
2
uA
mV
%
Css=0.1 uF
CL=3000pF
V5
V12
20
14
mA
Output Drivers Section
Rise Time
Fall Time
Dead band Time
Oscillator Section
Osc Frequency
Osc Valley
Osc Peak
Output Enable Section
Pull up Resistor to V5
HI Threshold Voltage
LO Threshold Voltage
CL=3000pF
CL=3000pF
CL=3000pF
70
70
200
100
130
300
nS
nS
nS
100
Ct=150pF
190
220
250
0.2
Khz
V
V
V5
35
k
V
V
2
0.8
Note 1: Vs refers to the set point voltage given in Table 1.
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
* Output voltage is disabled for US3012A.
** Output voltage is disabled for all versions.
D3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
D2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Vs
1.30*
1.35*
1.40*
1.45*
1.50*
1.55*
1.60*
1.65*
1.70*
1.75*
1.80
1.85
1.90
1.95
2.00
2.05
D4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
D2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Vs
**
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
Table 1 - Set point voltage vs. VID codes
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