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參數(shù)資料
| 型號： | 8182 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | LOW-DROPOUT, 3 V REGULATOR . HIGH EFFICIENCY |
| 中文描述： | 低壓差，3 V穩(wěn)壓器。高效 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 111K |
| 代理商： | 8182 |
8182
LOW-DROPOUT,
3 V REGULATOR
LOAD TRANSIENT PERFORMANCE
V
I
= 3.2 V to 6.2 V, C
O
= 1
μ
F, T
A
= 25
°
C
ENABLE TRANSIENT PERFORMANCE
V
I
= 3.2 V to 6.2 V, C
O
= 1
μ
F, I
O
= 60 mA, T
A
= 25
°
C
Dwg. WP-026
V
O
I
O
100 mA
1 mA
3.5 V
3.0 V
2.5 V
<100
μ
s
<300
μ
s
Dwg. WP-027
V
O
V
E
0
3.0 V
0
<125
μ
s
<250
μ
s
V
I
The RESET output of the comparator pro-
duces a logic low whenever the COMP input is
below 1.23 V. An out-of-regulation detector can
be configured by dividing down the regulator
output (an R/R divider is typical) and connecting it
to the COMP input. As tne regulator input is
ramped up, the RESET signal becomes valid
(low) at approximately V
I
= 1.3 V. The RESET
signal will go high when V
C
= 1.23 V (V
O
= 2.46 V
with an R/R divider). Comparator hysteresis
prevents oscillations under low battery conditions.
The RESET open-drain output requires an
external pull-up resistor. This can be returned to
either the input supply or the regulator output,
depending on suystem requirements. Note that
the RESET sink current is adds to the battery
drain in a low-battery condition. Suggested
values range from 100 k
to 1 M
. RESET
should be left unconnected if it is not used.
INPUT, COMPARATOR, & OUTPUT RELATIONSHIPS
*Comparator input voltage is normally obtained
from a resistive divider off of the output.
10 V
MAX.
1.23 V
V
V
V *
1.3 V
3.0 V
V
Dwg. WP-025
C(hys)
V
OUTPUT UNDEFINED
I
O
OR
TYPICAL CHARACTERISTICS (concluded)
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