ChipFind - документация

Электронный компонент: A1184ELH

Скачать:  PDF   ZIP
A1180/81/82/83
A1180-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
AB SO LUTE MAX I MUM RAT INGS
Supply Voltage, V
CC
..........................................28 V
Reverse-Supply Voltage, V
RCC
........................18 V
Magnetic Flux Density, B .........................Unlimited
Operating Temperature
Ambient,
T
A
, Range E.................. 40C to 85C
Ambient,
T
A
, Range L................ 40C to 150C
Maximum
Junction,
T
J(max)
........................165C
Storage Temperature, T
S
.................. 65C to 170C
On-chip protection
Supply transient protection
Reverse-battery protection
On-board voltage regulator
3.5 V to 24 V operation
Sensitive Two-Wire Field-Programmable Chopper-Stabilized
Unipolar Hall-Effect Switches
Package LH, 3-pin SOT
Features and Benefi ts
1. VCC
2. No connection
3. GND
NC
1
2
3
PTCT
1
2
3
1. VCC
2. GND
3. GND
Package UA, 3-pin SIP
Chopper stabilization
Low switchpoint drift over operating
temperature range
Low stress sensitivity
Field-programmable for optimized
switchpoints
The A1180, A1181, A1182, and A1183 devices are sensitive, two-wire, unipolar,
Hall effect switches. The operate point, B
OP
, can be fi eld-programmed, after fi nal
packaging of the sensor and placement into the application. This advanced feature
allows the optimization of the sensor switching performance, by effectively
accounting for variations caused by mounting tolerances for the device and the
target magnet.
This family of devices are produced on the Allegro MicroSystems advanced
BiCMOS wafer fabrication process, which implements a patented, high-frequency,
chopper-stabilization technique that achieves magnetic stability and eliminates
the offsets that are inherent in single-element devices exposed to harsh applica-
tion environments. Commonly found in a number of automotive applications,
the A1180-83 family of devices are utilized to sense: seat track position, seat belt
buckle presence, hood/trunk latching, and shift selector position.
Two-wire unipolar switches are particularly advantageous in price-sensitive appli-
cations, because they require one less wire than the more traditional open-collec-
tor output switches. Additionally, the system designer gains inherent diagnostics
because output current normally fl ows in either of two narrowly-specifi ed ranges.
Any output current level outside of these two ranges is a fault condition. The
A1180-83 family of devices also features on-chip transient protection, and a Zener
clamp to protect against overvoltage conditions on the supply line.
The output currents of the A1181 and A1183 switch
HIGH
in the presence of a south
polarity magnetic fi eld of suffi cient strength; and switch
LOW
otherwise, including
when there is no signifi cant magnetic fi eld present. The A1180 and A1182 have
inverted output current levels: switching
LOW
in the presence of a south polarity
magnetic fi eld of suffi cient strength, and
HIGH
otherwise. The devices also differ in
their specifi ed
LOW
current supply levels.
All family members are offered in two package styles: SOT-23W, a miniature low-
profi le package for surface-mount applications (suffi x LH), and TO-92, three-
lead ultra-mini Single Inline Package (SIP) for through-hole mounting
(suffi x UA).
Factory-programmed versions are also available. Refer to: A1140, A1141, A1142,
A1143, A1145, and A1146.
2
A1180-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
Part Number
Package
T
A
(C)
Supply Current at
Low Output, I
CC(L)
(mA)
Output
South
(+) Field
1
Other
Field
2
A1180ELH
Surface Mount
40 to 85
2 to 5
Low
High
A1180EUA
SIP
A1180LLH
Surface Mount
40 to 150
A1180LUA
SIP
A1181ELH
Surface Mount
40 to 85
2 to 5
High
Low
A1181EUA
SIP
A1181LLH
Surface Mount
40 to 150
A1181LUA
SIP
A1182ELH
Surface Mount
40 to 85
5 to 6.9
Low
High
A1182EUA
SIP
A1182LLH
Surface Mount
40 to 150
A1182LUA
SIP
A1183ELH
Surface Mount
40 to 85
5 to 6.9
High
Low
A1183EUA
SIP
A1183LLH
Surface Mount
40 to 150
A1183LUA
SIP
1
South (+) magnetic fi elds must be of suffi cient strength.
2
Includes north () magnetic fi elds of suffi cient strength, and weak fi elds of either polarity.
Product Selection Guide
Use the complete part numbers when ordering
Functional Block Diagram
Amp
Regulator
Program/Lock
Low-Pass
Filter
GND
VCC
GND
Programming
Logic
Package UA Only
0.01 uF
V+
Offset
Clock/Logic
Dyna
mic
O
ffse
t
Ca
nce
ll
a
t
i
o
n
Sam
p
le
and
H
old
3
A1180-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
MAGNETIC CHARACTERISTICS
1
over the operating voltage and temperature range, unless otherwise specifi ed
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Programmable Operate Point Range
B
OPrange
I
CC
= I
CC(H)
for A1180 and A1182
I
CC
= I
CC(L)
for A1181 and A1183
60
200
G
Switchpoint Step Size
B
RES
V
CC
= 5 V, T
A
= 25C
4
8
12
G
Number of Programming Bits
Switchpoint setting
5
Bit
Programming locking
1
Bit
Termperature Drift of B
OP
B
OP
20
G
Hysteresis
B
HYS
B
HYS
= B
OP
B
RP
5
15
30
G
1
Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic
polarity; therefore greater B values indicate a stronger south polarity fi eld (or a weaker north polarity fi eld, if present).
2
The range of values specifi ed for B
RES
is a maximum, derived from the cumulative programming bit errors.
ELECTRICAL CHARACTERISTICS
over the operating voltage and temperature range, unless otherwise specifi ed
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage
V
CC
Device powered on
3.5
24
V
Supply Current
1
I
CC(L)
B >B
OP
for A1180; B <B
RP
for A1181
2
5
mA
B >B
OP
for A1182; B <B
RP
for A1183
5
6.9
mA
I
CC(H)
B >B
OP
for A1181, A1183
B <B
RP
for A1180, A1182
12
17
mA
Zener Clamp Supply Voltage
V
Z(supply)
I
CC
= I
CC(max)
+ 3 mA; T
A
= 25C
28
40
V
Zener Clamp Supply Current
2
I
Z(supply)
V
Z(supply)
= 28 V
10
mA
Output Slew Rate
3
di/dt
No bypass capacitor; capacitance of the
oscilloscope performing the measurement
= 20 pF
36
mA/s
Chopping Frequency
f
C
400
kHz
Power-On Time
4
t
on
After factory trimming; with and without
bypass capacitor (C
BYP
= 0.01 F)
25
s
Power-On State
5
POS
t
on
t
on(max)
;
V
CC
slew rate 25 mV/s
HIGH
1
Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic
polarity; therefore greater B values indicate a stronger south polarity fi eld (or a weaker north polarity fi eld, if present).
2
The maximum value for I
Z(supply)
is equal to I
CC(L)MAX
+ 3 mA.
3
The value of di is the difference between 90% of I
CC(H)
and 10% of I
CC(L)
, and the value of dt is time period between those two points. The value of di/dt
depends on the value of the bypass capacitor, if one is used, with greater capacitances resulting in lower rates of change.
4
The value of t
on
depends on the value of the bypass capacitor, if one is used, with greater capacitances resulting in longer t
on
.
5
A V
CC
slew rate less than 25 mV/s affects device performance, both while powering-on and while running. For t
on
> t
on(max)
, and B
RP
< B < B
OP
, POS
is undefi ned.
4
A1180-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
Characteristic Data
0
2
4
6
8
10
-40
-20
0
20
40
60
80
100 120 140
10
12
14
16
18
20
-40 -20
0
20
40
60
80
10
12
14
0
20
40
60
80
100
120
140
160
180
200
-40
-20
0
20
40
60
80
100
120
140
0
10
20
30
40
50
60
-40
-20
0
20
40
60
80
100
120
140
I
CC(L)
versus Ambient Temperature
at Various Levels of V
CC
(A1180, A1181, A1182, A1183)
Switchpoint Setting Result*
versus Ambient Temperature
(A1180, A1181, A1182, A1183)
Hysteresis versus Ambient Temperature
at V
CC
= 12 V
(A1180, A1181, A1182, A1183)
I
CC(H)
versus Ambient Temperature
at Various Levels of V
CC
(A1180, A1181, A1182, A1183)
Ambient Temperature, T
A
(C)
Ambient Temperature, T
A
(C)
Ambient Temperature, T
A
(C)
Ambient Temperature, T
A
(C)
I
CC(H)
(mA)
I
CC(L)
(mA)
Average
B
OP
(G)
B
HYS
(G)
V
CC
3.8 V
12.0 V
24.0 V
V
CC
3.8 V
12.0 V
24.0 V
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
* Factory default setting is Bit 0.
Device Qualifi cation Program
EMC (Electromagnetic Compatibility) Requirements
Test Name
Reference Specifi cation
ESD Human Body Model
AEC-Q100-002
ESD Machine Model
AEC-Q100-003
Conducted Transients
ISO 7637-1
Direct RF Injection
ISO 11852-7
Bulk Current Injection
ISO 11852-4
TEM Cell
ISO 11852-3
Contact Allegro MicroSystems for information.
Contact your local representative for EMC results.
5
A1180-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
115 Northeast Cutoff, Box 15036
www.allegromicro.com
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Symbol
Test Conditions
Min. Typ.
Max Units
Package Thermal Resistance
R
JA
Package LH, minimum-K PCB (single-sided with
copper limited to solder pads)
110
C/W
Package LH, low-K PCB (double-sided with
0.926 in
2
copper area)
228
C/W
Package UA, minimum-K PCB (single-sided with
copper limited to solder pads)
165
C/W
6
7
8
9
2
3
4
5
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
20
40
60
80
100
120
140
160
180
Maximum
Allowable
V
CC
(V)
T
J(max)
= 165C; I
CC
= I
CC(max)
Power Derating Curve
(R
JA
= 228 C/W)
Minimum-K PCB, Package LH
(R
JA
= 110 C/W)
Low-K PCB, Package LH
(R
JA
= 165 C/W)
Minimum-K PCB, Package UA
V
CC(min)
V
CC(max)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
20
40
60
80
100
120
140
160
180
Temperature (C)
P
o
w
e
r
D
i
s
s
i
pa
ti
on
,
P
D
(m
W)
T
J(max)
= 165C; V
CC
= V
CC(max)
; I
CC
= I
CC(max)
Maximum Power Dissipation, P
D(max)
(R
JA
= 165
C/W)
Minimum-K
PCB,
Package
UA
(R
JA
= 228
C/W)
Minim
um-K
PCB,
Packa
ge LH
(R
JA
= 110
C/W)
Low-K
PCB,
Pack
age
LH