- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385546 > MAX6805US44D3-T (MAXIM INTEGRATED PRODUCTS INC) 4-Pin, Low-Power レP Reset Circuits with Manual Reset PDF資料下載
參數(shù)資料
| 型號： | MAX6805US44D3-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 4-Pin, Low-Power レP Reset Circuits with Manual Reset |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封裝： | TO-253, SOT-143, 4 PIN |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 161K |
| 代理商： | MAX6805US44D3-T |
4-Pin, Low-Power
μP Reset Circuits with Manual Reset
_______________________________________________________________________________________
5
M
V
CC
GND
MAX6804
RESET
MR
100k
(a)
V
CC
GND
MAX6803
RESET
100k
*
(b)
*ASSUMES HIGH-Z RESET INPUT TO THE
μ
P
MR
Figure 2. Ensuring Reset Valid down to V
CC
= 0
μPs and circuitry do not operate when V
CC
drops below
1V. For the MAX6804 application where
RESET
must be
valid down to 0, adding a pulldown resistor between
RESET
and GND removes stray leakage currents, hold-
ing
RESET
low (Figure 2a). The pulldown resistor value
is not critical; 100k
is large enough not to load
RESET
,
and small enough to pull it low. For the MAX6803, where
RESET must be valid to V
CC
= 0, a 100k
pullup resistor
between RESET and V
CC
will hold RESET high when
V
CC
falls below 0.7V (Figure 2b).
Since the MAX6805 has an open-drain, active-low out-
put, it typically uses a pullup resistor. With this device,
RESET
will most likely not maintain an active condition,
but will drift to a non-active level due to the pullup
resistor and the reduced sinking capability of the open-
drain device. Therefore, this device is not recommend-
ed for applications where the
RESET
pin is required to
be valid down to V
CC
= 0.
1
2
4
3
V
CC
MR
(RESET)
GND
MAX6803
MAX6804
MAX6805
SOT143
TOP VIEW
RESET
( ) ARE FOR MAX6803
MAX6804
V
CC
V
CC
RESET
MR
RESET
GND
PUSHBUTTON
SWITCH
V
CC
GND
μ
P
Pin Configuration
Typical Operating Circuit
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。