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参数资料
| 型号： | LM2635MX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | PLASTIC, SO-20 |
| 文件页数： | 7/13页 |
| 文件大小： | 290K |
| 代理商： | LM2635MX/NOPB |
Pin Descriptions (Continued)
nary code from outside the chip (typically from the CPU) for
generating the desired output voltage. Each VID pin is inter-
nally pulled up to V
CC via a 90 A current source. Table 1
shows the code table.
OUTEN (Pin 19): Output Enable. The output voltage is dis-
abled when this pin is pulled low. It is internally pulled up to
V
CC via a 90 A current source.
HSGATE (Pin 20): Gate drive for the high-side N-channel
MOSFET. This signal is interlocked with LSGATE (Pin 1) to
avoid a shoot-through problem.
TABLE 1. VID Code and DAC Output
V
ID4
V
ID3
V
ID2
V
ID1
V
ID0
Rated Output
Voltage (V)
01111
(#) (1.30)
01110
(#) (1.35)
01101
(#) (1.40)
01100
(#) (1.45)
01011
(#) (1.50)
01010
(#) (1.55)
01001
(#) (1.60)
01000
(#) (1.65)
00111
(#) (1.70)
00110
(#) (1.75)
00101
1.80
00100
1.85
00011
1.90
00010
1.95
00001
2.00
00000
2.05
11111
(shutdown)
11110
2.1
11101
2.2
11100
2.3
11011
2.4
11010
2.5
11001
2.6
11000
2.7
10111
2.8
10110
2.9
10101
3.0
10100
3.1
10011
3.2
10010
3.3
10001
3.4
10000
3.5
#: These voltages are disabled, can be enabled upon request.
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