Allegro UGN5275K Datasheet
5275
COMPLEMENTARY OUTPUT
POWERHALL® LATCH
X
Data Sheet
27632A
5275
COMPLEMENTARY OUTPUT
POWER HALL® LATCH
Type UGN5275K latching Hall-effect sensors are bipolar integrated
circuits designed for electronic commutation of brushless dc motors.
They feature open-collector complementary power outputs that are
capable of sinking up to 300 mA continuously. Increased current
ratings, complementary outputs, and sensitive switching points that are
stable over temperature and time ideally suit these devices for minimum-component brushless dc motor designs.
V
CC
1
SUPPLY
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at T
A
Supply Voltage, VCC. . . . . . . . . . . . . . . 14 V
Magnetic Flux Density, B . . . . . . Unlimited
Output OFF Voltage, VCE. . . . . . . . . . . 60 V
DISCONTINUED PRODUCT
Output ON Current, I
Continuous . . . . . . . . . . . . . . . . . 0.5 A
Peak (Start Up) . . . . . . . . . . . . . . 0.9 A
Operating Temperature Range,
TA . . . . . . . . . . . . . . . . . -20°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . . -65°C to +150°C
Package Power Dissipation,
PD .. . . . . . . . . . . . . . . . . . . . . 750 mW
— FOR REFERENCE ONLY
32
OUTPUT
= +25°C
C
4
OUTPUT
Dwg. PH-002
GROUND
Each sensor IC includes a Hall-voltage generator, an operational
amplifier, a Schmitt trigger, a voltage regulator, and large-area dual
npn-output transistors. The regulator allows the IC to operate with
supply voltages ranging from 4.5 V to 14 V. On-chip compensation
circuitry stabilizes switch point performance over temperature. The
large bipolar junction output transistors are fed by a unique driver
stage, which minimizes power dissipation within the IC. The magnetic
operation of this device is similar to that of the UGN3275K complementary-output Hall-effect latch.
Output Q of the IC switches to the LOW state when the internal
Hall generator experiences a magnetic field that exceeds the rated
operate point. Output Q switches HIGH within one µs of the Output Q
change of state. When the device is exposed to a sufficient magnetic
field of opposite polarity, Output Q returns to the HIGH state, and
Output Q returns to the LOW state.
The UGN5275K is rated for operation over a temperature range of
-20°C to +85°C, and is supplied in an environmentally rugged, four-pin
miniature plastic SIP. Consult the factory for alternate packaging and
custom magnetic requirements.
FEATURES
■ High Sink-Current Capability
■ Magnetic Sensing, Complementary-Output Latch
■ On-Chip Schmitt Trigger Provides Hysteresis
■ Temperature-Compensated Switch Points
■ Rugged, Low-Profile SIP
Always order by complete part number: UGN5275K .
5275
3
2
4
COMPLEMENTARY OUTPUT
POWERHALL® LATCH
ELECTRICAL CHARACTERISTICS at T
= +25°C, V
A
= 4.5 V to 14 V
CC
(unless otherwise noted).
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Supply Voltage V
Output Saturation Voltage V
Output Leakage Current I
Supply Current l
Output Rise Time t
Output Fall Time t
Switch Time
Differential ∆tV
CC
CE(SAT)
CEX
CC
r
f
VCC = 14 V, IC = 300 mA — 400 600 mV
VCE = 14 V, VCC = 14 V — — 10 µA
VCC = 14 V, Output Open — 18 30 mA
VCC = 14 V, RL = 45 Ω, CL = 20 pF — 0.3 1.5 µs
VCC = 14 V, RL = 45 Ω,CL = 20 pF — 0.3 1.5 µs
= 14 V, RL = 45 Ω, CL = 20 pF — 1.0 3.0 µs
CC
4.5 — 14 V
MAGNETIC CHARACTERISTICS
TA = +25°CT
Characteristic Symbol Min. Max. Min. Max. Units
Operate Point B
Release Point B
Hysteresis B
OP
RP
hys
25 250 15 250 G
-250 -25 -250 -15 G
100 — 100 — G
= -20°C to +85°C
A
NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention).
TEST CIRCUIT
FUNCTIONAL BLOCK DIAGRAM
V
1
CC
REG.
X
OUTPUT
OUTPUT
GROUND
Dwg. FH-002
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1988, 1995, Allegro MicroSystems, Inc.
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