參數(shù)資料
型號： A8287
廠商： Allegro MicroSystems, Inc.
英文描述： LNB Supply and Control Voltage Regulator
中文描述： LNB電源和控制穩(wěn)壓器
文件頁數(shù)： 3/17頁
文件大?。?/td> 527K
代理商： A8287
3
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
D
P
2
A8285/A8287
LNB Supply and Control Voltage Regulator
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Set-point Accuracy, load and line
regulation
V
O1
Relative to target voltage selected, with:
I
LOAD
= 0 to 500 mA
-4.5
0
4.5
%
Supply Current
I
CC
ENB = Low, LNB output disabled
–
–
7
mA
I
CCEN
ENB = High, LNB output enabled, I
LOAD
= 0mA
–
–
15
mA
Boost Switch-On Resistance
R
DSBOOST
T
J
= 25
°
C, I
LOAD
= 500mA
–
400
500
m
Switching Frequency
fo
–
320
352
384
kHz
Switch Current Limit
–
V
IN
= 12 V
2.0
3
4.0
A
Linear Regulator Voltage Drop
V
REG
V
BOOST
– V
LNB
, no tone signal, I
LOAD
= 500 mA
400
600
800
mV
Slew Rate Current on TCAP
I
CAP
Charging
–12.5
–10
–7.5
μA
Discharging
7.5
10
12.5
μA
Output Voltage Slew Period
t
slew
V
LNB
= 13 to 18 V, TCAP = 6.8 nF, I
LOAD
= 500 mA
–
500
–
μs
Output Reverse Current
I
OR
ENB = Low, V
LNB
= 28 V with C4 fully charged
–
1
5
mA
Ripple and Noise on LNB Output
V
RN
See notes 1 and 2
–
–
50
mV
pp
Protection Circuitry
Overcurrent Limit
I
LIM
High limit
Low limit
550
400
700
500
850
600
mA
mA
Overcurrent Disable Time
t
DIS
–
1.2
–
1.7
ms
V
IN
Undervoltage Threshold
UV
OFF
Guaranteed turn-off
8.65
9.15
9.65
V
V
IN
Turn-On Threshold
UV
ON
Guaranteed turn-on
8.75
9.25
9.75
V
Power-Not-Good Flag Set
PNG
set
–
77
85
93
%V
LNB
Power-Not-Good Flag Reset
PNG
reset
–
82
90
98
%V
LNB
Thermal Shutdown Threshold
T
J
See note 1
–
165
–
°C
Thermal Shutdown Hysteresis
T
J
See note 1
–
20
–
°C
ELECTRICAL CHARACTERISTICS
at T
A
= +25°C, V
IN
= 10 to 16 V (unless otherwise noted)
Continued on next page
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
A8287SLB 功能描述:IC REG LNB SUPPLY/CTRL 24-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
A8287SLB-T 制造商:Allegro MicroSystems LLC 功能描述:
A8287SLBTR 功能描述:IC REG LNB SUPPLY/CTRL 24-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR)
A8287SLBTR-T 功能描述:IC LNB SUPPLY/VOLTAGE REG 24SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:控制器，DSP 輸入電壓:4.5 V ~ 25 V 輸出數(shù):2 輸出電壓:最低可調(diào)至 1.2V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:30-TSSOP 包裝:帶卷 (TR)
A8290 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator
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