AD260BND-0 Analog Devices Inc, AD260BND-0 Datasheet - Page 7

• Manufacturer Part Number: AD260BND-0
• Description: Power Supply IC
• Manufacturer: Analog Devices Inc
• Series: IsoLogic™r

Specifications of AD260BND-0

• Output Current Min: -25mA
• Output Current Max: 25mA
• Rohs Status: RoHS non-compliant
• Inputs - Side 1/side 2: 0/5
• Number Of Channels: 5
• Isolation Rating: 3500Vrms
• Voltage - Supply: 4 V ~ 5.75 V
• Data Rate: 40MBd
• Propagation Delay: 14ns
• Output Type: Tri-State
• Package / Case: 22-DIP Module
• Operating Temperature: -25°C ~ 85°C

The power transformer is designed to operate between 150 kHz
and 250 kHz and will easily deliver more than 1 W of isolated
power when driven push-pull (5 V) on the system side. Different
transformer tap, rectifier and regulator schemes will provide
combinations of 5 V, 15 V, 24 V or even 30 V or higher.
The output voltage when driven with a low voltage-drop drive
(@ 5 V push-pull) will be 37 V p-p across the entire secondary.
This will drop to 33 V p-p at 4.5 V drive.
REV. 0
52T
52T
CT
CT
Figure 3. System Side Transformer Driver Examples
+
–
+
–
3.3 F
TANT.
3.3 F
TANT.
12
11
13
14
4.7k
1
8
D
D
COMP V
1
2
G
9
LM2524
1
2
MAX
GND
253
IN
8
15
6
G
V
2
7
REF
C
C
INV
16
S
R
C
F
L
NI
L
D
+
S
–
T
T
10
1
2
4
5
6
7
4
3
3.3k
470pF
SHUTDOWN (ON/OFF)
0.1 F
LOGIC/SHUTDOWN (H
+5Vdc
+5Vdc
I
)
–7–
Application Examples
The following is an example of a typical transformer system-side
drive circuit and a field-side regulation circuit suitable for use in
most general applications.
5V DRIVE
V
OUT
Figure 5. Field Side Power Supply Rectifier Examples
+8.55
17.63
+26.3
+8.64
8.64
@
(PWR-UP ENABLE)
15.79
7.72
23.5
7.72
7.62
4.5V DRIVE
ENABLE FLD
V(MIN) @
+5V ISO
–5V ISO
20mA
40mA
"a" DIODES
"b" DIODES
80mA
20mA
20mA
V
DD
20mA
40mA
FLD
I
IN5818/MBR0530
IN5819/MBR0540
COM
Figure 4.
COM
+
+
LOAD
COM
+
–
+
20mA
20mA
COM
COM
+
+
–
–
REG
REG
+5V
–5V
b
a
b
a
a
b
b
b
b
a
a
a
a
+5Vdc/+4.5Vdc
+5Vdc/+4.5Vdc
+5Vdc/+4.5Vdc
+5Vdc/+4.5Vdc
AD260
150mA
150mA
150mA
150mA
96T
CT.