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參數(shù)資料
| 型號： | A8284 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Two Output Low-Noise Block Supply and Control-Voltage Regulator(雙輸出低噪聲組件,電源和控制電壓穩(wěn)壓器) |
| 中文描述： | 兩個輸出低噪聲塊供應(yīng)和控制穩(wěn)壓器（雙輸出低噪聲組件，電源和控制電壓穩(wěn)壓器） |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 177K |
| 代理商： | A8284 |
8284
TWO-OUTPUT LNB SUPPLY AND
CONTROL-VOLTAGE REGULATOR
www.allegromicro.com
3
ELECTRICAL CHARACTERISTICS at T
A
= 25
°
C, OSEL = H for LNBB, OSEL = L for LNBA (each
output tested separately), ENT = L, EN = H, LLC = L, V
IN
= 24 V, I
O
= 50 mA (unless otherwise
noted).
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage
V
IN
V
O
I
O
= 600 mA, VSEL0 = L, VSEL1 = L, LLC = L
I
O
= 600 mA, VSEL0 = L, VSEL1 = L, LLC = L
I
O
= 600 mA, VSEL0 = L, VSEL1 = L, LLC = H
I
O
= 600 mA, VSEL0 = L, VSEL1 = H, LLC = L
I
O
= 600 mA, VSEL0 = L, VSEL1
= H, LLC = H
I
O
= 600 mA, VSEL0 = H, VSEL1 = L, LLC = L
I
O
= 600 mA, VSEL0 = H, VSEL1 = L, LLC = H
I
O
= 600 mA, VSEL0 = H, VSEL1 = H, LLC = L
I
O
= 600 mA, VSEL0 = H, VSEL1 = H, LLC = H
V
O
= 13 V, V
I
= 16 to 40 V
V
O
= 18 V, V
I
= 21 to 40 V
V
O
= 13 or 18 V, I
O
= 50 to 600 mA
—
3.3 +
V
BUCK
47
12.5
13
V
Output Voltage
13.5
V
13.4
14
14.6
V
17.3
18
18.7
V
18.2
19
19.8
V
11.5
12
12.5
V
12.5
13
13.5
V
19.2
20
20.8
V
20.2
21
21.8
V
Line Regulation
V
O
—
4.0
40
mV
—
4.0
40
mV
Load Regulation
V
O
V
OM(th)
f
tone
V
tone(PP)
dc
tone
t
r
, t
f
G
mod
V
mod(PP)
—
80
180
mV
Current-Limiting Threshold
125
135
145
mV
Tone Frequency
ENT = H
20
22
24
kHz
Tone Amplitude
ENT = H
550
680
800
mV
Tone Duty Cycle
ENT = H
40
50
60
%
Tone Rise or Fall Time
ENT = H
5.0
10
15
μ
s
External Modulation Gain
V
O
/
V
mod
, f = 10 Hz to 40 kHz
AC coupling
—
5.0
—
V/V
External Modulation
Input Voltage
—
—
160
mV
External Modulation
Impedance
Z
mod
f = 10 Hz to 40 kHz
—
5.0
—
k
continued next page ...
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