LH1525ACDTR Vishay, LH1525ACDTR Datasheet - Page 7

• Manufacturer Part Number: LH1525ACDTR
• Description: Solid State Relays Normally Open Form 1A 400V
• Manufacturer: Vishay

Specifications of LH1525ACDTR

• Package / Case: PDIP
• Mounting Style: SMD/SMT
• Case Color: Black
• Relay Type: Solid State
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIONS
INPUT CONTROL
The LH1525 low turn-on current SSR has highly sensitive
photodetection circuits that will detect even the most minute
currents flowing through the LED. Leakage current must be
considered when designing a circuit to turn on and off these
relays.
Figure 23 shows a typical logic circuit for providing LED
drive current. R
of current flowing through the LED. For 5 V operation, a
2700  resistor will limit the drive current to about 1.4 mA.
Where high-speed actuation is desirable, use a lower value
resistor for R
required with the LH1525 relay.
R
high output (V
resistance is set at a high value to minimize the overall
current drawn from the VS. The primary purpose of this
resistor is to keep the differential voltage across the LED
below its turn-on threshold. LED dropout voltage is graphed
vs. temperature in the typical performance characteristics
section. When the logic gate is high, leakage current will flow
through R
PACKAGE DIMENSIONS in millimeters
Document Number: 83823
Rev. 1.8, 10-Mar-11
THE PRODUCT DESCRIBED HEREIN AND THIS DATASHEET ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
2
is an optional pull-up resistor which pulls the logic level
2
. R
1
2
OH
. An additional RC peaking circuit is not
1
will draw up to 8 mA before developing a
) up toward the VS potential. The pull-up
is the input resistor that limits the amount
i178001
DIP
6.5
6.3
4° typ.
For technical questions, contact:
1 min.
0.55
0.45
3
4
This datasheet is subject to change without notice.
1 Form A Solid State Relay
8.7
8.5
2
5
2.54 typ.
6
1
LH1525AT, LH1525AAB, LH1525AABTR
0.051 min.
0.9
0.8
Pin one ID
3.81
3.30
[e-mail]
voltage potential which may possibly turn on the LED.
Each application should be evaluated, over the full operating
temperature range to make sure that leakage current
through the input control LED is kept to a value less than the
minimum
specification.
ilh1525at_22
0.35
0.25
LED
ISO method A
18° typ.
7.62 typ.
buffered CMOS
8.82
7.62
Fig. 23 - Input Control Circuit
Any TTL or
forward
logic
Vishay Semiconductors
R 2
100 k Ω
current
3.81
2.79
www.vishay.com/doc?91000
for
switch
www.vishay.com
V S
R 1
2700 Ω
SSR
turn-off
7