A1172_13 Datasheet, PDF (2/11 Pages) Allegro MicroSystems – Micropower Ultra-Sensitive Hall-Ef fect Switch

A1172
Micropower Ultra-Sensitive Hall-Effect Switch
Description (continued)
includes, on a single silicon chip, a Hall-voltage generator, a small-
signal amplifier, chopper stabilization, a latch, and a MOSFET
output.
TheA1172 device offers magnetically optimized solutions, suitable
for most applications. The wafer level chip scale package (WLCSP)
is approximately only 1 mm by 1 mm by 0.5 mm. This package is
smaller than most plastic packages and reduces the printed circuit
board area consumed by micropower Hall-effect switches.
Selection Guide
Part Number
Package¹
A1172ECGLT²
4 bumped wafer-level chip-scale
package (WLCSP)
1_{Contact Allegro}™ _{for additional packing options.}
Pb-free
Pb-free chip with high-temperature solder
balls (RoHS compliant)
2_{Allegro products sold in WLCSP package types are not intended for automotive applications.}
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_DD
V_RDD
V_OUTx
V_ROUTx
I_OUTx(Sink)
I_OUTx(Source)
B
T_A
T_J(max)
T_stg
Range E
Notes
Packing*
4000 pieces per reel
Rating
5
–0.3
5
–0.3
–1
1
Unlimited
–40 to 85
165
–65 to 170
Units
V
V
V
V
mA
mA
G
ºC
ºC
ºC
Pin-out Diagram
A1 A2
B1 B2
(Bump-down view)
Terminal List Table
Name
Number
VOUTPS
A1
VOUTPN
A2
GND
B1
VDD
B2
Function
Push-pull output
Inverted push-pull output
Ground
Connects power supply to chip
Allegro MicroSystems, LLC
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com