These Hall-effect latches are temperature-stable and stress-resistant
sensors especially suited for electronic commutation in brushless dc
motors using multipole ring magnets. Each device includes a voltage
regulator, quadratic Hall voltage generator, temperature compensation
circuit, signal amplifier, Schmitt trigger, and an open-collector output on
a single silicon chip. The on-board regulator permits operation with
supply voltages of 4.5 volts to 18 volts. The switch output can sink
10 mA. With suitable output pull up, they can be used directly with
bipolar or MOS logic circuits.
The three package styles available provide a magnetically optimized
package for most applications. Suffix ‘LT’ is a surface-mount SOT89/
TO-243AA package; suffixe ‘UA’ features wire leads for through-hole
mounting.
HALL-EFFECT LATCHES
Always order by complete part number, e.g., UGN3175LT .
See Magnetic Characteristics table for differences between devices.
Data Sheet
27609.4C
FEATURES
a73 Symmetrical Response
a73 4.5 V to 18 V Operation
a73 Open-Collector Output
a73 Reverse Battery Protection
a73 Activate With Small, Commercially Available Permanent Magnets
a73 Solid-State Reliability
a73 Small Size
a73 Superior Temperature Stability
a73 Resistant to Physical Stress
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
. . . . . . . . . . . . . 18 V
Reverse Battery Voltage, V
RCC
. . . . -18 V
Magnetic Flux Density, B . . . . Unlimited
Output OFF Voltage, V
OUT
. . . . . . . . 18 V
Continuous Output Current, I
OUT
. 15 mA
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . -20°C to +85°C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . -65°C to +150°C
Pinning is shown viewed from branded side.
3175 AND
3177
Dwg. PH-003A
1
SUPPLY
V
CC
GROUND
32
OUTPUT
X