datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

AD260AND-3 View Datasheet(PDF) - Analog Devices

Part Name
Description
View to exact match
AD260AND-3 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
AD260
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.
4.7k
9
15 16
COMP VIN VREF
12
10
11
52T
CT + 3.3F
– TANT.
13
14
LM2524
INV 1
2
NI
GND
CL+ 4
CL
RT
5
6
3.3k
CT 7
470pF
8
+5Vdc
LOGIC/SHUTDOWN (HI)
0.1F
1
D1
6
4
SD
52T
CT + 3.3F
– TANT.
MAX
253
8 D2
G1
2
FS 3
G2
7
+5Vdc
SHUTDOWN (ON/OFF)
Figure 3. System Side Transformer Driver Examples
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.
VDD FLD
+5V ISO
+5V
REG
96T
CT.
ENABLE FLD
(PWR-UP ENABLE)
–5V ISO
I
–5V
REG
Figure 4.
VOUT @
5V DRIVE
V(MIN) @
4.5V DRIVE
+8.55 7.62
80mA
+
LOAD
COM
؎17.63 15.79
20mA
+
20mA
+5Vdc/+4.5Vdc
150mA
a
a
b +5Vdc/+4.5Vdc
150mA
b
40mA
؎8.64 7.72
COM
+
40mA
COM
a +5Vdc/+4.5Vdc
150mA
a
a
a
+26.3
+8.64
23.5
20mA
7.72
+
+
20mA
b
+5Vdc/+4.5Vdc
150mA
a
COM
b
"a" DIODES IN5818/MBR0530
"b" DIODES IN5819/MBR0540
Figure 5. Field Side Power Supply Rectifier Examples
REV. 0
–7–
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]