參數(shù)資料
型號(hào): A3250JUATL
元件分類: 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PSSO3
封裝: ULTRA MINI, TO-92, SIP-3
文件頁(yè)數(shù): 9/15頁(yè)
文件大小: 730K
代理商: A3250JUATL
3
A3250-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Field-Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switches
A3250 and A3251
OPERATING CHARACTERISTICS valid over operating TA and VCC, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
ELECTRICAL CHARACTERISTICS
Supply Voltage1
VCC
Running mode
4.2
24
V
Output Saturation Voltage
VOUT(sat)
IOUT = 20 mA; Switch state = ON
175
400
mV
Output Leakage Current
IOFF
VOUT = 24 V; Switch state = OFF
10
A
Supply Current
ICC(off)
A3250; B < BRP; VOUT = HIGH
4.0
7.0
mA
A3251; B > BOP; VOUT = HIGH
4.0
7.0
mA
ICC(on)
A3250; B > BOP; VOUT = LOW
6.0
10.0
mA
A3251; B < BRP; VOUT = LOW
6.0
10.0
mA
Output Rise Time
tr
RLOAD = 820 , CLOAD = 10 pF
5.0
s
Output Fall Time
tf
RLOAD = 820 , CLOAD = 10 pF
5.0
s
Chopping Frequency
fC
340
kHz
Power-Up Time
ton
VOUT = HIGH
20
50
s
Output Current Limit1,2
IOUT(lim)
Short-circuit protection
60
90
120
mA
Power-On State
POS
A3250; B < BRP, t > ton
HIGH
mV
A3251; B < BRP, t > ton
LOW
mV
MAGNETIC CHARACTERISTICS
Initial Operate Point
BOP
–20
13
50
G
Temperature Drift of BOP
BOP
BOP ≤ 500 gauss
–35
35
G
Hysteresis (BOP – BRP)Bhys
Package TA range = J
5.0
18
35
G
Package TA range = L
5.0
13
35
G
PROGRAMMING CHARACTERISTICS
Programmable BOP Values3
BOP(prog)
50
≥350
G
Number of Programming Bits
Switchpoint set
6
Bit
Programming lock
1
Bit
Resolution
BRES
7.0
G
TRANSIENT PROTECTION CHARACTERISTICS
Supply Zener Voltage
VZ
28
V
Supply Zener Current
IZ
VCC = 28 V
13
mA
Reverse Battery Current
IRCC
VRCC = –18 V, TJ < TJ(max)
–5.0
mA
1 Do not exceed TJ(max): Additional information on power derating is provided in the applications section.
2 Short-circuit protection is not intended for continuous operation; permanent damage may result.
3 Device can be used below 50 G but is not guaranteed to be a unipolar switch. It is the responsibility of the programmer to verify that the desired
switchpoint has been achieved.
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