CA3524E Intersil, CA3524E Datasheet - Page 10

• Manufacturer Part Number: CA3524E
• Description: REGUL. PULSE WIDTH MODULATOR
• Manufacturer: Intersil

Specifications of CA3524E

• Rohs Status: RoHS non-compliant
• Other names: CA3524

FIGURE 14. FOLDBACK CURRENT-LIMITING CIRCUIT USED
FIGURE 15. CAPACITOR-DIODE COUPLED VOLTAGE
FIGURE 16. SINGLE-ENDED INDUCTOR CIRCUITS WHERE THE
S
-
+
A
//S
V+
V+
V+
NOTE: Diode D1 Is Necessary To Prevent Reverse
B
V+
V+
V+
Emitter-Base Breakdown of Transistor Switch S
TO
SHORTED OUTPUT CONDITIONS
MULTIPLIER OUTPUT STAGES
TWO OUTPUTS OF THE 1524 ARE CONNECTED IN
PARALLEL
S
S
S
SENSE
A
A
A
S
S
A
A
5
4
S
/S
/S
D1
A
REDUCE
D1
B
/S
B
D1
S
S
S
B
B
B
B
R2
R1
RS
POWER
I
MAX
V
I
SC
TH
DISSIPATION
=
=
= 200mV
V
O
V
R
R
= 5V
I
TH
| V+ | < | V
S
V+ > V
V+ < V
S
(
CA1524, CA2524, CA3524
V+ < V
| V+ | > | V
V
V+ > V
WHERE
TH
-V
+V
-V
+V
O
O
O
O
+
O
O
+V
+V
O
O
O
R1 + R2
O
|
V
O
UNDER
O
O
A
R
.
|
2
)
10
TABLE 1. INPUT vs. OUTPUT VOLTAGE, AND FEEDBACK
+
-
FIGURE 17. TRANSFORMER-COUPLED OUTPUTS
V+
S
V
S
V+
-0.5
-2.5
B
O
A
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-3
-4
-5
-6
-7
-8
-9
S
(V)
A-B
RESISTOR VALUES FOR I
TOR-DIODE OUTPUT CIRCUIT IN FIGURE 18)
V+
PUSH-PULL
+
-
FLYBACK
V
O
R
V+
V
2
O
10
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
FULL BRIDGE
(K )
6
S
S
A
B
L
= 40mA (FOR CAPACI-
Q1
Q2
V
V+ (Min.) (V)
O
CAN BE S
S
CAN BE S
S
A
B
CAN DRIVEQ1
CAN DRIVEQ2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
8
9
V
A
B
O
OR
OR