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參數(shù)資料
| 型號(hào)： | US3007CW |
| 廠商： | Unisem Group |
| 英文描述： | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS NON SYNCHRONOUS , LDO CONTROLLER AND 200MmA LDO ON BOARD |
| 中文描述： | 5位可編程同步降壓加上非同步，LDO控制器及船上200MmA穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大?。?/td> | 101K |
| 代理商： | US3007CW |
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4-4
Rev. 1.8
12/8/00
US3007
I/O O.V. upper trip point
I/O O.V. lower trip point
FAULT Output HI
Note 1: Vs refers to the set point voltage given in Table 1.
Vsen2 ramping up
Vsen2 ramping down
Io=3mA
4.3
4.2
10
V
V
V
Pin Description
LSB input to the DAC that programs the output voltage. This pin is TTL compatible that
realizes a logic “1” as either HI or Open. When left open,his pin is pulled up internally by
a 27k
resistor to 5V supply.
Input to the DAC that programs the output voltage. This pin is TTL compatible that real-
izes a logic “1” as either HI or Open. When left open,his pin is pulled up internally by a
27k
resistor to 5V supply.
Input to the DAC that programs the output voltage. This pin is TTL compatible that real-
izes a logic “1” as either HI or Open. When left open,his pin is pulled up internally by a
27k
resistor to 5V supply.
MSB input to the DAC that programs the output voltage. This pin is TTL compatible that
realizes a logic “1” as either HI or Open. When left open,his pin is pulled up internally by
a 27k
resistor to 5V supply.
This pin selects a range of output voltages for the DAC.When in the LOW state the range
is 1.3V to 2.05V and when it switches to HI state the range is 2.0V to 3.5V. This pin is
TTL compatible that realizes a logic “1” as either HI or Open. When left open,his pin is
pulled up internally by a 27k
resistor to 5V supply.
This pin is an open collector output that switches LO when any of the outputs are outside
of the specified under voltage trip point. It also switches low when Vsen1 pin is more than
10% above the DAC voltage setting.
This pin provides the feedback for the synchronous switching regulator. Typically this pin
can be connected directly to the output of the switching regulator. However, a resistor
divider is recommended to be connected from this pin to vout1 and GND to adjust the
output voltage for any drop in the output voltage that is caused by the trace resistance.
The value of the resistor connected from Vou1 to FB1 must be less than 100
.
PIN# PIN SYMBOL
7
VID0
6
VID1
5
VID2
4
VID3
3
VID4
8
PGOOD
21
FB1
PIN DESCRIPTIONS
D4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
2.0
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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