Stable operation over full operating temperature range
▪
Reverse battery protection
▪
Solid-state reliability
▪
Factory-programmed at end-of-line for optimum
performance
▪
Robust EMC performance
▪
High ESD rating
▪
Regulator stability without a bypass capacitor
Description
The Allegro
™
A1210-A1214 Hall-effect latches are next
generation replacements for the popular Allegro 317x and
318x lines of latching switches. The A121x family, pro-
duced with BiCMOS technology, consists of devices that
feature fast power-on time and low-noise operation. Device
programming is performed after packaging, to ensure
increased switchpoint accuracy by eliminating offsets that
can be induced by package stress. Unique Hall element
geometries and low-offset amplifiers help to minimize noise
and to reduce the residual offset voltage normally caused by
device overmolding, temperature excursions, and thermal
stress.
The A1210-A1214 Hall-effect latches include the following
on a single silicon chip: voltage regulator, Hall-voltage gen-
erator, small-signal amplifier, Schmitt trigger, and NMOS
output transistor. The integrated voltage regulator permits
operation from 3.8 to 24 V. The extensive on-board protec-
tion circuitry makes possible a ±30 V absolute maximum
voltage rating for superior protection in automotive and
industrial motor commutation applications, without adding
external components. All devices in the family are identical
except for magnetic switchpoint levels.
The small geometries of the BiCMOS process allow these
devices to be provided in ultrasmall packages. The package
styles available provide magnetically optimized solutions
for most applications. Package LH is an SOT23W, a min-
iature low-profile surface-mount package, while package
UA is a three-lead ultramini SIP for through-hole mounting.
Each package is lead (Pb) free, with 100% matte tin plated
leadframes.
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
1
2
3
1
2
3
Not to scale
Functional Block Diagram
VCC
Regulator
To all subcircuits
VOUT
Amp
Gain
Offset
Trim
Control
GND
A1210-DS, Rev. 10
A1210, A1211,
A1212, A1213,
and
A1214
Continuous-Time Latch Family
Selection Guide
Part Number
A1210ELHLT-T
A1210LLHLT-T
A1210LUA-T
A1211LUA-T
A1212LLHLT-T
A1212LUA-T
A1213LLHLT-T
A1213LUA-T
A1214LLHLT-T
A1214LUA-T
Packing*
7-in. reel, 3000 pieces/reel
7-in. reel, 3000 pieces/reel
Bulk, 500 pieces/bag
Bulk, 500 pieces/bag
7-in. reel, 3000 pieces/reel
Bulk, 500 pieces/bag
7-in. reel, 3000 pieces/reel
Bulk, 500 pieces/bag
7-in. reel, 3000 pieces/reel
Bulk, 500 pieces/bag
Mounting
3-pin SOT23W surface mount
3-pin SOT23W surface mount
3-pin SIP through hole
3-pin SIP through hole
3-pin SOT23W surface mount
3-pin SIP through hole
3-pin SOT23W surface mount
3-pin SIP through hole
3-pin SOT23W surface mount
3-pin SIP through hole
Ambient, T
A
–40ºC to 85ºC
–40ºC to 150ºC
–40ºC to 150ºC
–40ºC to 150ºC
–40ºC to 150ºC
–40ºC to 150ºC
–200
–300
200
300
–150
–180
150
180
B
RP
(Min)
B
OP
(Max)
*Contact Allegro for additional packing options.
Absolute Maximum Ratings
Characteristic
Supply Voltage
Reverse Supply Voltage
Output Off Voltage
Reverse Output Voltage
Output Current
Magnetic Flux Density
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
V
CC
V
RCC
V
OUT
V
ROUT
I
OUTSINK
B
T
A
T
J
(max)
T
stg
1 G = 0.1 mT (millitesla)
Range E
Range L
Notes
Rating
30
–30
30
–0.5
25
Unlimited
–40 to 85
–40 to 150
165
–65 to 170
Unit
V
V
V
V
mA
G
ºC
ºC
ºC
ºC
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2
A1210, A1211,
A1212, A1213,
and
A1214
Continuous-Time Latch Family
Pin-out Diagrams
Package LH, 3-pin Surface Mount
GND
Package UA, 3-pin SIP
3
1
VCC
2
VOUT
1
VCC
2
GND
3
VOUT
Terminal List
Name
VCC
VOUT
GND
Description
Connects power supply to chip
Output from circuit
Ground
Number
Package LH Package UA
1
1
2
3
3
2
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
A1210, A1211,
A1212, A1213,
and
A1214
Characteristic
Electrical Characteristics
Supply Voltage
1
Output Leakage Current
Output On Voltage
Power-On Time
2
Output Rise Time
3
Output Fall Time
3
Supply Current
Reverse Battery Current
Supply Zener Clamp Voltage
Supply Zener Current
4
Magnetic Characteristics
5
A1210
A1211
Operate Point
B
OP
A1212
A1213
A1214
A1210
A1211
Release Point
B
RP
A1212
A1213
A1214
A1210
A1211
Hysteresis
B
HYS
A1212
A1213
A1214
1
2
Continuous-Time Latch Family
Symbol
V
CC
I
OUTOFF
V
OUT(SAT)
t
PO
t
r
t
f
I
CCON
I
CCOFF
I
RCC
V
Z
I
Z
Test Conditions
Operating, T
J
< 165°C
V
OUT
= 24 V, B < B
RP
I
OUT
= 20 mA, B > B
OP
Slew rate (dV
CC
/dt) < 2.5 V/μs, B > B
OP
+ 5 G or
B < B
RP
– 5 G
V
CC
= 12 V, R
LOAD
= 820
Ω,
C
S
= 12 pF
V
CC
= 12 V, R
LOAD
= 820
Ω,
C
S
= 12 pF
B > B
OP
B < B
RP
V
RCC
= –30 V
I
CC
= 10.5 mA; T
A
= 25°C
V
Z
= 32 V; T
A
= 25°C
Min.
3.8
–
–
–
–
–
–
–
–
32
–
25
South pole adjacent to branded face
of device
15
50
80
140
–150
North pole adjacent to branded face
of device
–180
–175
–200
–300
50
80
B
OP
– B
RP
100
160
280
Typ.
–
–
215
–
–
–
4.1
3.8
–
–
–
78
87
107
–
–
–78
–95
–117
–
–
155
180
225
–
–
Max.
24
10
400
4
400
400
7.5
7.5
–10
–
10.5
150
180
175
200
300
–25
–15
–50
–80
–140
–
–
350
400
600
Units
V
μA
mV
μs
ns
ns
mA
mA
mA
V
mA
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
OPERATING CHARACTERISTICS
over full operating voltage and ambient temperature ranges, unless otherwise noted
Maximum voltage must be adjusted for power dissipation and junction temperature, see
Power Derating
section.
For V
CC
slew rates greater than 250 V/μs, and T
A
= 150°C, the Power-On Time can reach its maximum value.
3
C =oscilloscope probe capacitance.
S
4
Maximum current limit is equal to the maximum I
CC(max)
+ 3 mA.
5
Magnetic flux density, B, is indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity magnetic fields.
This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the field is indicated
by the absolute value of B, and the sign indicates the polarity of the field (for example, a –100 G field and a 100 G field have equivalent strength, but
opposite polarity).
DEVICE QUALIFICATION PROGRAM
Contact Allegro for information.
EMC (Electromagnetic Compatibility) REQUIREMENTS
Contact Allegro for information.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
A1210, A1211,
A1212, A1213,
and
A1214
Continuous-Time Latch Family
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Symbol
Test Conditions
Package LH, on single layer, single-sided PCB with copper
limited to solder pads
Package LH, on single layer, double-sided PCB with 0.926 in
2
copper area
Package UA on single layer, single-sided PCB with copper
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