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A1101LLHLT-T

Part # A1101LLHLT-T
Description IC SWITCH HALL EFFECT SOT23W
Category IC
Availability In Stock
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Allegro Microsystems
Date Code: 0838
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

Description
The Allegro
®
A1101-A1104 and A1106 Hall-effect switches
are next generation replacements for the popular Allegro
312x and 314x lines of unipolar switches. The A110x family,
produced 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 A1101-A1104 and A1106 Hall-effect switches include
the following on a single silicon chip: voltage regulator,
Hall-voltage generator, 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 protection circuitry makes possible a ±30 V absolute
maximum voltage rating for superior protection in automotive
and industrial motor commutation applications, without adding
A1101-DS, Rev. 1
Features and Benefits
Continuous-time operation
Fast power-on time
Low noise
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
Continuous-Time Switch Family
Continued on the next page…
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Functional Block Diagram
Not to scale
A1101, A1102, A1103, A1104, and A1106
Amp
Regulator
GND
VCC
VOUT
OffsetGain
Trim
Control
To all subcircuits
Continuous-Time Switch Family
A1101, A1102, A1103,
A1104, and A1106
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Part Number Packing* Mounting Ambient, T
A
B
RP
(Min) B
OP
(Max)
A1101ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 85ºC
10 175
A1101EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1101LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 150ºC
A1101LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1102ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 85ºC
60 245
A1102EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1102LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 150ºC
A1102LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1103ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 85ºC
150 355
A1103EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1103LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 150ºC
A1103LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1104ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 85ºC
25 450
A1104EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1104LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 150ºC
A1104LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1106ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 85ºC
160 430
A1106EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
A1106LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount
–40ºC to 150ºC
A1106LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole
*Contact Allegro for additional packing options.
Selection Guide
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 miniature 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.
Absolute Maximum Ratings
Characteristic Symbol Notes Rating Units
Supply Voltage V
CC
30 V
Reverse Supply Voltage V
RCC
–30 V
Output Off Voltage V
OUT
30 V
Reverse Output Voltage V
ROUT
–0.5 V
Output Current I
OUTSINK
25 mA
Magnetic Flux Density B Unlimited G
Operating Ambient Temperature T
A
Range E –40 to 85 ºC
Range L –40 to 150 ºC
Maximum Junction Temperature T
J
(max) 165 ºC
Storage Temperature T
stg
–65 to 170 ºC
Description (continued)
Continuous-Time Switch Family
A1101, A1102, A1103,
A1104, and A1106
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ELECTRICAL OPERATING CHARACTERISTICS over full operating voltage and ambient temperature ranges, unless otherwise noted
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Supply Voltage
1
V
CC
Operating, T
J
< 165°C 3.8 24 V
Output Leakage Current I
OUTOFF
V
OUT
= 24 V, B < B
RP
––10μA
Output On Voltage V
OUT(SAT)
I
OUT
= 20 mA, B > B
OP
215 400 mV
Power-On Time
2
t
PO
Slew rate (dV
CC
/dt) < 2.5 V/μs, B > B
OP
+ 5 G or
B < B
RP
– 5 G
––4μs
Output Rise Time
3
t
r
V
CC
= 12 V, R
LOAD
= 820 Ω, C
S
= 12 pF 400 ns
Output Fall Time
3
t
f
V
CC
= 12 V, R
LOAD
= 820 Ω, C
S
= 12 pF 400 ns
Supply Current
I
CCON
B > B
OP
4.1 7.5 mA
I
CCOFF
B < B
RP
3.8 7.5 mA
Reverse Battery Current I
RCC
V
RCC
= –30 V –10 mA
Supply Zener Clamp Voltage V
Z
I
CC
= 10.5 mA; T
A
= 25°C 32 V
Supply Zener Current
4
I
Z
V
Z
= 32 V; T
A
= 25°C 10.5 mA
1
Maximum voltage must be adjusted for power dissipation and junction temperature, see Power Derating section.
2
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
S
=oscilloscope probe capacitance.
4
Maximum current limit is equal to the maximum I
CC(max)
+ 3 mA.
DEVICE QUALIFICATION PROGRAM
Contact Allegro for information.
EMC (Electromagnetic Compatibility) REQUIREMENTS
Contact Allegro for information.
1
3
2
GND
VOUT
VCC
Package UA, 3-pin SIP
Package LH
1
2
3
GND
VOUT
VCC
Terminal List
Name Description
Number
Package LH Package UA
VCC Connects power supply to chip 1 1
VOUT Output from circuit 2 3
GND Ground 3 2
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