Allegro A8920SLR Datasheet
Data Sheet
29801.10
8920
DUAL SCHOTTKY DIODE
Schottky barrier diodes combine high rectification efficiency with
high switching speeds and low series resistance. The A8920SLR dualdiode is designed specifically for hard-disk drive applications requiring
low voltage drop rectification of the spindle motor back-EMF during
1
3
power-down head retraction. It is supplied in a 3-lead small-outline
transistor package (SOT-23/TO-236AB) for surface-mounting for use
over the operating temperature range of -20°C to +85°C.
2
Dwg. PD-002
FEATURES
■ Low Forward Voltage Drop 440 mV Typical at 150 mA
■ 500 mA Forward Current
■ 20 V Reverse Voltage
TYPICAL APPLICATION
V
DD
Dwg. ED-002A
ABSOLUTE MAXIMUM RATINGS
at T
=+25°C
A
Forward Current, IF.......................... 500 mA
Reverse Voltage, V
Operating Temperature Range,
T
.................................. -20°C to +85°C
A
Storage Temperature Range,
T
................................ -65°C to +150°C
S
..............................20 V
R
Always order by complete part number: A8920SLR .
8920
DUAL SCHOTTKY DIODE
ELECTRICAL CHARACTERISTICS at T
= +25°C (unless otherwise specified).
A
Limits
Characteristic Symbol Test Conditions Min. Typ. Max. Units
Reverse Breakdown Voltage V
Reverse Leakage Current I
Forward Voltage V
Junction Capacitance C
Reverse Recovery Time t
(BR)
R
F
T
rr
IR = 100 µA20——V
VR = 10 V — 1.6 20 µA
IF = 50 mA — 346 400 mV
= 150 mA — 440 500 mV
I
F
VR = 0 V, f = 1 MHz — 370 — pF
IF = IR = 100 mA — 32 — ns
TYPICAL CHARACTERISTICS
600
250
500
200
400
R = 575°C/W
θJA
300
TA = 0°C
FORWARD VOLTAGE IN mV
200
100
0.1 1.0 10
FORWARD CURRENT IN mA
100
30
10
TA = +25°C
TA = +75°C
T = +75°C
A
100 1 k
Dwg. GD-003
150
100
50
0
ALLOWABLE PACKAGE POWER DISSIPATION IN mW
25
50 75 100 125 150
AMBIENT TEMPERATURE IN °C
Dwg. GD-002
3.0
1.0
REVERSE CURRENT IN µA
0.3
0.1
0 5.0 10
T = +25°C
A
T = 0°C
A
REVERSE VOLTAGE IN VOLTS
Allegro MicroSystems, Inc. reserves the right to make, from time to
time, such departures from the detail specifications as may be required
to permit improvements in the design of its products.
The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third
15 20
Dwg. GD-004
parties which may result from its use.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
W
Copyright © 1991, 1995, Allegro MicroSystems, Inc.
Loading...