Datasheet

LTC1535
12
1535fc
For more information www.linear.com/LTC1535
applicaTions inForMaTion
Table 1. Examples of Transformers Compatible with the LTC1535
MANUFACTURER PART NUMBER
DC ISOLATION VOLTAGE
(1 SECOND) PHONE NUMBER/WEBSITE
WE-Midcom 750311542 1.25kV [phone]
http://www.we-online.com
750031160
31160R
1.25kV
760390014 3.125kVAC
750313638 6.25kVAC
Eaton CTX02-14659
CTX02-14659-R
500V [phone]
CTX02-14608 3.75kVAC
Murata Power Solutions
78253/55JC 1.5kV http://www.murata-ps.com
78253/55JVC 4kV
Minntronix 4810796R 3kVAC [phone]
http://minntronix.com/
Pulse Electronics P1597NL 500V
http://www.pulseelectronics.com/
PH9085.034NL 2.5kV
Sumida (Japan) S-167-5779 100V 03-3667-3320
http://www.sumida.com/
Table 2. Fault Mode Behavior
FUNCTION (PINS)
V
CC
> V
UVH
V
CC2
> V
UVH
V
CC
< V
UVL
V
CC2
> V
UVH
V
CC
> V
UVH
V
CC2
< V
UVL
V
CC
< V
UVL
V
CC2
> V
UVL
THERMAL
SHUTDO
WN
DC/DC Converter (2, 3) On On On On Off
RO (28) RE = 0V Active Forced-High Forced-High Forced High Forced-High
RE = V
CC
Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z
RE = Floating Active Hi-Z Hi-Z Hi-Z Hi-Z
RO2 (17) Active Active Active Active Active
Driver Outputs
Y and Z (13, 12)
Active Hi-Z Hi-Z Hi-Z Hi-Z
Communications Across Isolation Barrier Active Disabled Disabled Disabled Disabled
Fault Indicator on RE
(27) Low High High High High
Table 3. Driver Function Table
INPUTS OUTPUTS
RE DE DI Y Z
X 1 1 1 0
X 1 0 0 1
X 0 X Z 2
Note: Z = high impedance, X = don’t care
Table 4. Receiver Function Table
INPUTS OUTPUTS
RE DE A-B RO R02
0 X ≥ V
TH(MAX
1 1
0 X ≤ V
TH(MIN)
0 0
0 X Inputs Open 1 1
0 X Inputs Shorted 1 1
1 X ≥ V
TH(MAX)
Z 1
1 X ≤ V
TH(MIN)
Z 0
1 X Inputs Open Z 1
1 X Inputs Shorted Z 1
Note: Z = high impedance, X = don’t care
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