Siemens LH1540 Datasheet

Package Dimensions in Inches (mm)

A

K

NC

S

NC

S'

.010 (.25)
.014 (.35)

.110 (2.79)
.150 (3.81)

.130 (3.30)
.150 (3.81)

.020 (.051) Min.

.300 (7.62)

Typ.

.031 (0.80)
.035 (0.90)

.100 (2.54) Typ.

.039

(1.00)

Min.

.018 (0.45)
.022 (0.55)

.248 (6.30)
.256 (6.50)

.335 (8.50)
.343 (8.70)

Pin One ID.

6

5

4

12

3

18° Typ.

.300 (7.62)
.347 (8.82)

4°

Typ.

1

2

3

6

5

4

LH1540

HIGH VOLTAGE, SOLID STATE RELAY

OPTOCOUPLER

FEATURES

• Normally Open, Single Pole Single Throw Operation

• Control 350 VAC or DC Voltage

• Switch 150 mA Loads

• LED Control Current, 1 mA, Typical

• Low ON-Resistance, 20 Ω Typ. at 50 mA

• Isolation T est V oltage, 3750 VA C

• Current Limit Protection

• Underwriters Lab File # E52744
APPLICATIONS

• Telephone Switch Hook

• High V oltage T est Equipment

• TRIAC Driver

• Motor Control

• Industrial Control Systems

RMS

DESCRIPTION

The LH1540 is a single pole single throw (SPST), normally open
(NO), solid state relay. The relay can control AC or DC loads
currents up to 100 mA, with a supply voltage up to 350 V. The
device is packaged in a six pin 0.3 inch dual-in line package.
This package offers an insulation dielectric withstand of 3750
VAC

RMS

.

The coupler consists of a AlGaAs LED that is optically coupled
to a dielectrically isolated photodiode array which drives two
series connected high voltage MOS transistors. The typical
ON-resistance is 20 Ω
There is built-in current limiting circuitry in the detector chip,
enabling it to pass FCC 68-302 and other regulatory voltage
surge requirements when over voltage protection is provided.

at 25 mA and is linear up to 50 mA.

Absolute Maximum Ratings (T
Emitter

Reverse Voltage...................................................................6.0 V

Continuous Forward Current .............................................60 mA

Peak Forward Current (1 µ

Power Dissipation...........................................................100 mW

Derate Linearly from 25 °

C..........................................1.3 mW/ ° C

Detector

Output Breakdown Voltage.................................................350 V

Continous Load Current ..................................................150 mA

Total Power Dissipation...................................................400 mW

Derate Linearly from 25 °

C.......................................See Figure 3

Package

Isolation Test Voltage.............................................3750 VAC

Isolation Resistance

V

=500 V, T

IO

V

=500 V, T

IO

=25 ° C.................................................... ≥ 10

A

=100 ° C.................................................. ≥ 10

A

Power Dissipation...........................................................500 mW

Derate Linearly from 25 °

C..........................................2.5 mW/ ° C

Storage Temperature Range ................................–40 to +150 °

Operating Temperature Range...............................–40 to +85 °

Junction Temperature........................................................100 °

Soldering Temperature, 2 mm from case, 10 sec. ............260 °

5–205

=25 ° C)

A

s) ..................................................1 A

RMS

12
11

Ω

Ω

C
C
C
C

Characteristics (T

=25 ° C)

A

Description Symbol Min. Typ. Max. Unit Test Condition
Emitter

Forward Voltage V
V

Temperature Coefficient

F

Reverse Current I
Junction Capacitance C
Dynamic Resistance
Switching Time t

F

∆ V

/ ∆ T –2.2 mV/ ° C

F

R

J

∆ V

/ ∆ I

F

F

, t

R

F

1.25 1.5 V I

110

µ

AV
15 pF V
6WI
1

sI

µ

=10 mA

F

=6 V

R

=0 V, f=1 MHz

F

=10 mA

F

=10 mA

F

Detector

Output Breakdown Voltage V
Output Off-State Leakage Current I
Feed through Capacitance, pins 4 to 6 C

Current Limit I

B

T(OFF)

T

LMT

350 V I

.02 200 nA V
55 pF I

170 210 250 mA I

=50 µ A

B

= ± 100 V, I

T

=0, f=1 KHz,

F

V

=1 VP-P

L

=5 mA, t=5 ms

F

Package

LED Forward Current for Turn-on I
LED Forward Current for Turn-off I
ON-resistance R
Turn-on Time t
Turn-off Time t

FTh
FOFF

ON
ON
OFF

12 20 25 W I

12mAI

0.2 0.9 mA V

1.2 2.0 ms I

0.5 2.0 ms

=100 mA, t=10 ms

L

= ± 300 V, I

L

=5 mA, I

F

=5 mA, V

F

R

=1 k Ω

L

=0 mA

F

=<5 µ A

L

=50 mA

L

=+50 V

L

Figure 1. LED forward current vs. forward voltage

120
100

85°C

80
60

40

25°C

20

0

1.81.61.41.21.00.80.6

IF Forward current in mA

VF- Input LED forward Voltage

Figure 2. Forward current vs. forward voltage

+Iss' (mA)

ILmt

Vss' (v)

-Vss' (v)

ILmt

-1.0

210

50

-50

-210

-Iss' (mA)

1.0

Figure 3. Recommended load current vs. temp.

120
100

80
60
40

IF=2 ma 3

4

20

IL-Load Current in mA

0

Ambient Temperature in °C

Figure 4. Current limit vs. temperature

40
30
20

10

IF=5 mA
t=5 ms
Vl=see Elec.Char

0

-10

-20

ILmt in %

-30

-40
806040200-20-40

Ambient Temperature in °C

>5

806040200-20-40

5–206

LH1540