A8282SLB Allegro Microsystems Inc, A8282SLB Datasheet - Page 4

• Manufacturer Part Number: A8282SLB
• Description: IC REG LNB SUPPLY/CTRL 24-SOIC
• Manufacturer: Allegro Microsystems Inc

Specifications of A8282SLB

• Applications: Converter, Analog and Digital Satellite Receivers
• Voltage - Input: 16.5 ~ 48 V
• Number Of Outputs: 1
• Voltage - Output: 12 ~ 20 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Primary Input Voltage: 47V
• No. Of Outputs: 1
• Output Voltage: 20V
• No. Of Pins: 24
• Operating Temperature Range: -20°C To +85°C
• Termination Type: SMD
• Supply Voltage Min: 17.5V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ELECTRICAL CHARACTERISTICS: unless otherwise noted at T
4.5
NOTES: 1. Typical data is for design information only.
Supply Voltage Range
Output Voltage Error
(reference Output Voltage
Select table)
Output Reverse Current
Buck Switch On Resist.
Buck Switch Current Limit
Switching Frequency
Linear Reg. Volt. Drop
Logic Input Voltage
Logic Input Current
Supply Current
Tone Characteristics
Tone Frequency
Tone Amplitude
Tone Duty Cycle
Tone Rise or Fall Time
External Modulation
Tone Amplitude
External Modulation Input
Voltage Range
External Modulation Input
Impedance
www.allegromicro.com
-
V + V
Characteristic
2. Negative current is defi ned as coming out of (sourcing) the specifi ed device terminal.
LNB
< V
IN
< 47
-
V
V
V
tone(PP)(EXTM)
tone(PP)(ENT)
V
Symbol
∆V
EXTM(PP)
E
r
Z
dc
I
DS(on)
I
RLNB
f
t
V
V
EXTM
BSM
V
VLNB
tone
I
I
r
f
BUCK
, t
IH
IN
O
tone
IN
IH
IL
f
Operating
6 mA ≤ I
12 mA ≤ I
average V
EN = L, V
T
T
16 x f
V
V
Outputs disabled (EN = L)
EN = H, I
ENT = H
ENT = H, 12 mA ≤ I
ENT = H, 12 mA ≤ I
ENT = H, 12 mA ≤ I
f = 22 kHz square wave, I
450 mA, V
V
AC coupled
f = 22 kHz
J
J
SENSE
IH
PP
= 25°C, I
= 125°C, I
= 5 V
ac coupled
CONTROL-VOLTAGE REGULATORS
tone
– V
LNB
LNB
LNB
LNB
LNB
IN
LNB
LNB
≤ 750 mA, ENT = L
Test Conditions
= 100mV to 125 mV;
LNB
= 0
= 22 V, V
≤ 750 mA, ENT = H,
, ENT = L, I
= 750 mA
= 750 mA
LNB
LNB
LNB
IN
≤ 750 mA
≤ 750 mA
≤ 750mA
= 22 V or fl oating
LNB
LOAD
= 750 mA
= 12 mA to
J
< 125°C, C
LNB SUPPLY AND
4.5 +V
Min.
320
700
400
400
100
20
40
—
—
—
—
—
—
—
—
—
8281
1
2
5
4
LNB
LNB
= 0.1 µF,
Typ.
0.57
0.84
<1.0
0.25
continued next page
352
900
650
550
Limits
22
10
—
—
—
—
—
—
—
AND
0
0
1
6
Max.
1100
±4.5
±4.5
0.67
0.94
384
900
800
125
2.5
0.8
47
10
10
24
60
15
10
—
5
1
8282
Units
kHz
kHz
mV
mV
mV
mV
mA
mA
mA
kΩ
µA
µs
%
%
%
Ω
Ω
V
V
V
A
3