Hall-Effect Switches. A1156-F Datasheet

A1156-F Switches. Datasheet pdf. Equivalent

Part A1156-F
Description Chopper-Stabilized Two-Wire Hall-Effect Switches
Feature A1152-F, A1153-F, A1155-F, and A1156-F Chopper-Stabilized Two-Wire Hall-Effect Switches FEATURES A.
Manufacture Allegro
Datasheet
Download A1156-F Datasheet



A1156-F
A1152-F, A1153-F, A1155-F, and A1156-F
Chopper-Stabilized Two-Wire Hall-Effect Switches
FEATURES AND BENEFITS
▪ AEC-Q100 automotive qualified
▪ Factory-set temperature coefficient (TC) for use with
ferrite magnets
▪ High-speed, 4-phase chopper stabilization
▪ Low switchpoint drift throughout temperature range
▪ Low sensitivity to thermal and mechanical stresses
▪ On-chip protection
▫ Supply transient protection
▫ Reverse-battery protection
▫ On-board voltage regulator
▫ 3 to 24 V operation
▪ Solid-state reliability
Continued on the next page…
PACKAGE: 2-Pin, Ultra-Mini SIP (suffix UB)
1.5 mm × 4 mm × 4 mm
DESCRIPTION
The A1152-F, A1153-F, A1155-F, and A1156-F comprise a
family of two-wire, unipolar, Hall-effect switches, which are
factory-trimmed to optimize magnetic switchpoint accuracy.
These devices are produced on the Allegro™ advanced
BiCMOS wafer fabrication process, which implements a
high-frequency, 4-phase, chopper stabilization technique. This
technique achieves magnetic stability over the full operating
temperature range, and eliminates offsets inherent in devices
with a single Hall element that are exposed to harsh application
environments.
The A115x family has a number of automotive applications.
These include sensing seat track position, seat belt buckle
presence, hood/trunk latching, and shift selector position.
Two-wire unipolar switches are particularly advantageous in
cost-sensitive applications because they require one less wire
for operation versus the more traditional open-collector output
switches. Additionally, the system designer inherently gains
diagnostics because there is always output current flowing,
which should be in either of two narrow ranges. Any current
level not within these ranges indicates a fault condition.
Continued on the next page…
Not to scale
Functional Block Diagram
VCC
0.1 µF
Regulator
To all subcircuits
Clock/Logic
Amp
Low-Pass
Filter
Schmitt
Trigger
Polarity
A1152-F-DS, Rev. 5
MCO-0000556
GND
January 22, 2020



A1156-F
A1152-F, A1153-F,
A1155-F, and A1156-F
Chopper-Stabilized Two-Wire Hall-Effect Switches
FEATURES AND BENEFITS (CONTINUED)
▪ Robust EMC and ESD performance
▪ Industry-leading ISO 7637-2 performance through use of
proprietary, 40 V clamping structures
▪ Extended Operating Ambient temperature range,
–40°C to 150°C
▪ UB package with integrated 0.1 µF bypass capacitor
DESCRIPTION (CONTINUED)
The UB is a 2-pin, ultra-mini, single inline package (SIP) for
through-hole mounting, and it is lead (Pb) free, with 100% matte-
tin leadframe plating.
Part Number
Packing
A1152LUBTN-F-T
A1153LUBTN-F-T
A1155LUBTN-F-T
A1156LUBTN-F-T
13-in. reel, 4000 pieces/reel
13-in. reel, 4000 pieces/reel
13-in. reel, 4000 pieces/reel
13-in. reel, 4000 pieces/reel
SELECTION GUIDE
Package
Output (ICC) in
South Polarity
Field
Supply Current
at ICC(L)
(mA)
2-pin SIP through-hole
2-pin SIP through-hole
2-pin SIP through-hole
2-pin SIP through-hole
Low
High
Low
High
5 to 6.9
5 to 6.9
5 to 6.9
5 to 6.9
Magnetic Operate
Point, BOP,
at TA = 25°C
(G)
58 to 100
58 to 100
16 to 60
16 to 60
Allegro MicroSystems
955 Perimeter Road
Manchester, NH 03103-3353 U.S.A.
www.allegromicro.com
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