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PDF ( 数据手册 , 数据表 ) A3161LT

零件编号 A3161LT
描述 HALL-EFFECT SWITCH FOR 2-WIRE APPLICATIONS
制造商 Allegro MicroSystems
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A3161LT 数据手册, 描述, 功能
V
CC
12
3
3161
HALL-EFFECT SWITCH
FOR 2-WIRE APPLICATIONS
This Hall-effect switch is a monolithic integrated circuit designed to
operate continuously over extended temperatures to +85°C. The unipo-
lar switching characteristic makes this device ideal for use with a simple
bar or rod magnet. The A3161ELT and A3161EUA are identical except
for package.
Each device includes a voltage regulator for operation with supply
voltages of 3.5 to 25 volts, reverse battery protection diode, quadratic
Hall-voltage generator, temperature compensation circuitry, small-signal
amplifier, Schmitt trigger, and a constant-current open-collector output.
Noise radiation is limited by control of the output current slew rate.
Two package styles provide a magnetically optimized package for
most applications. Suffix ‘LT’ is a miniature SOT-89/TO-243AA
transistor package for surface-mount applications; suffix ‘UA’ is a three-
lead ultra-mini SIP for through-hole mounting.
Dwg. PH-003-3
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC
Continuous ................................. 28 V
Surge (tw 100 ms) .................... 40 V
Reverse Battery Voltage, VRCC
Continuous ................................ -25 V
Surge (tw 100 ms) ................... -40 V
Magnetic Flux Density, B ....... Unlimited
Output OFF Voltage, VOUT .............. 28 V
Operating Temperature Range,
TA ............................. -40°C to +85°C
Storage Temperature Range,
TS ........................... -65°C to +170°C
FEATURES and BENEFITS
I Internal Current Regulator for 2-Wire Operation
I Output Slew Rate Controlled
I 3.5 V to 25 V Operation … Needs Only An Unregulated Supply
I Reverse Battery Protection
I Excellent Temp. Stability
I Activate with Small, Commercially Available Permanent Magnets
I Small Size
I Solid-State Reliability … No Moving Parts
I Resistant to Physical Stress
Always order by complete part number, e.g., A3161ELT .







A3161LT pdf, 数据表
3161
HALL-EFFECT SWITCH
FOR 2-WIRE APPLICATIONS
HALL-EFFECT SENSORS
Partial Part Avail. Oper.
Characteristics at TA = +25°C
Number
Temp.
BOP max BRP min Bhys typ
Features
Notes
3240
3209
3210
3361
3362
3161
3141
3235
5140
3142
3143
3144
3122
3123
3121
HALL-EFFECT UNIPOLAR SWITCHES in order of BOP and Bhys
E/L
+50 +5.0
10 chopper stabilized
1
E ±60 ±5.0 7.7 400 µW, chopper stabilized
E ±60 ±5.0 7.7 25 µW, chopper stabilized
E
+110
+55
5.0* 2-wire, chopper stabilized
E
+110
+55
5.0* 2-wire, chopper stabilized, inverted output
E
+160
+30
20 2-wire
E/L
+160
+10
55
S
+175
+25
15* output 1
2
-25 -175 15* output 2
2
E
+200
+50
55 300 mA power driver output
1
E/L
+230
+75
55
E/L
+340
+165
55
E/L
+350
+50
55
E/L
+400
+140
105
E/L
+440
+180
105
E/L
+450
+125
105
3260
3280
3134
3133
3281
3132
3187
3177
3625
3626
3195
3197
3175
3188
3283
3189
3275
3185
HALL-EFFECT LATCHES & BIPOLAR SWITCHES† in order of BOP and Bhys
E/L
E/L
E/L
K/L/S
E/L
K/L/S
E/L
S
S
S
E/L
L
S
E/L
E/L
E/L
S
+30
+40
+50
+75
+90
+95
+150
+150
+150
+150
+160
+160
+170
+180
+180
+230
+250
-30
-40
-50
-75
-90
-95
-150
-150
-150
-150
-160
-160
-170
-180
-180
-230
-250
20
45
27
52
100
52
100*
200
200
200
220
230
200
200*
300
100*
100*
bipolar switch, chopper stabilized
chopper stabilized
bipolar switch
bipolar switch
chopper stabilized
bipolar switch
900 mA power driver output
400 mA power driver output
active pulldown
chopper stabilized
E/L
+270
-270
340*
1, 3
1, 3
1
1
3
Operating Temperature Ranges:
S = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K = -40°C to +125°C, L = -40°C to +150°C
Notes 1. Protected.
2. Output 1 switches on south pole, output 2 switches on north pole for 2-phase, bifilar-wound, unipolar-driven brushless dc
motor control.
3. Complementary outputs for 2-phase bifilar-wound, unipolar-driven brushless dc motor control.
* Minimum. Maximum
Latches will not switch on removal of magnetic field; bipolar switches may switch on removal of field but require field reversal
for reliable operation over operating temperature range.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000














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