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CA1524F

Description
0.1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, CDIP16
CategoryPower/power management    The power supply circuit   
File Size205KB,16 Pages
ManufacturerRenesas Electronics Corporation
Websitehttps://www.renesas.com/
Download Datasheet Parametric View All

CA1524F Overview

0.1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, CDIP16

CA1524F Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerRenesas Electronics Corporation
Parts packaging codeDIP
package instructionDIP, DIP16,.3
Contacts16
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage40 V
Minimum input voltage8 V
Nominal input voltage20 V
JESD-30 codeR-GDIP-T16
JESD-609 codee0
length9.585 mm
Number of functions1
Number of terminals16
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Maximum output current0.1 A
Package body materialCERAMIC, GLASS-SEALED
encapsulated codeDIP
Encapsulate equivalent codeDIP16,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height5.33 mm
surface mountNO
Switch configurationPUSH-PULL
Maximum switching frequency300 kHz
technologyBIPOLAR
Temperature levelMILITARY
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm

CA1524F Preview

SO
N OB
IS A
2524 RODUCT
CA
P
October 2000
LETE
CA1524, CA2524
CA3524
Regulating Pulse Width Modulator
Description
The CA1524 and CA3524 are silicon monolithic integrated
circuits designed to provide all the control circuitry for use in
a broad range of switching regulator circuits.
The CA1524 and CA3524 have all the features of the indus-
try types SG1524, SG2524, and SG3524, respectively. A
block diagram of the CA1524 series is shown in Figure 1.
The circuit includes a zener voltage reference, transconduc-
tance error amplifier, precision R-C oscillator, pulse-width
modulator, pulse-steering flip-flop, dual alternating output
switches, and current-limiting and shutdown circuitry. This
device can be used for switching regulators of either polarity,
transformer-coupled dc-dc converter, transformerless volt-
age doublers, dc-ac power inverters, highly efficient variable
power supplies, and polarity converter, as well as other
power-control applications.
Features
• Complete PWM Power Control Circuitry
• Separate Outputs for Single-Ended or Push-Pull
Operation
• Line and Load Regulation . . . . . . . . . . . . . . . 0.2% (Typ)
• Internal Reference Supply with 1% (Max) Oscillator
and Reference Voltage Variation Over Full
Temperature Range
• Standby Current of Less Than 10mA
• Frequency of Operation Beyond 100kHz
• Variable-Output Dead Time of 0.5µs to 5µs
• Low V
CE(sat)
Over the Temperature Range
Applications
• Positive and Negative Regulated Supplies
• Dual-Output Regulators
• Flyback Converters
• DC-DC Transformer-Coupled Regulating Converters
• Single-Ended DC-DC Converters
• Variable Power Supplies
Ordering Information
PART
NUMBER
CA1524E
CA1524F
CA2524E
CA2524F
CA3524E
CA3524F
TEMPERATURE
RANGE
-55
o
C to +125
o
C
-55
o
C to +125
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
0
o
C to +70
o
C
PACKAGE
16 Lead Plastic DIP
16 Lead CerDIP
16 Lead Plastic DIP
16 Lead CerDIP
16 Lead Plastic DIP
16 Lead CerDIP
Pinout
CA1524, CA3524
(PDIP, CERDIP)
TOP VIEW
INV. INPUT
NON-
INV. INPUT
OSC OUT
(+) C.L.
SENSE
(-) C.L.
SENSE
R
T
C
T
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
REF
V+
EMITTER B
COLLECTOR B
COLLECTOR A
EMITTER A
SHUTDOWN
COMPENSATION
AND COMPARATOR
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
©
Intersil Corporation 2000
File Number
1239.4
1
CA1524, CA2524, CA3524
Functional Block Diagram
REFERENCE
REGULATOR
5V
+5V TO ALL
INTERNAL CIRCUITS
+5V
16
V
REF
FLIP
FLOP
3
OSC OUT
+5V
OSCILLATOR
R
T
+5V
7
C
T
1
INV. INPUT
2
NON-INV.
INPUT
1kΩ
10
9
SHUTDOWN
10kΩ
COMPENSATION AND COMPARATOR
-
ERROR
AMP
+
+5V
COMPARATOR
+5V
+
C.L.
-
E
B
4
5
- SENSE
S
B
14
S
A
11
E
A
C
B
13
6
C
A
12
15
V+
+ SENSE
8
GND
Test Circuit
8 - 40V
ls
V+
15
13
OUT B
2kΩ
1W
2kΩ
1W
12
OUT A
CA1524
3
16
11
14
8
6
7
2
1
9
10
4
5
2kΩ
2kΩ
10
kΩ
0.1µF
R
T
C
T
10kΩ
1kΩ
2kΩ
2
Specifications CA1524, CA2524, CA3524
Absolute Maximum Ratings
Input Voltage (Between V
IN
and GND Terminals). . . . . . . . . . . . 40V
Operating Voltage Range (V
IN
to GND) . . . . . . . . . . . . . . . . 8 to 40V
Output Current Each Output:
(Terminal 11, 12 or 13, 14) . . . . . . . . . . . . . . . . . . . . . . . . . 100mA
Output Current (Reference Regulator) . . . . . . . . . . . . . . . . . . . 50mA
Oscillator Charging Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Thermal Information
Thermal Resistance
θ
JA
Plastic DIP Package . . . . . . . . . . . . . . . . . . . . . . . . 100
o
C/W
Device Dissipation
Up to T
A
= +25
o
C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25W
Above T
A
= +25
o
C . . . . . . . . . . . . . . .Derate Linearly at 10mW/
o
C
Operating Temperature Range . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
Storage Temperature Range . . . . . . . . . . . . . . . . . . -65
o
C to +150
o
C
Lead Temperature (During Soldering)
At distance 1/16
±
in. (1.59mm
±0.79mm)
from case for 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . . . +265
o
C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications
T
A
= -55
0
C to +125
o
C for CA1524, 0
o
C to +70
o
C for the CA2524 and CA3524; V+ = 20V and
f = 20kHz, Unless Otherwise Stated.
CA1524, CA2524
CA3524
MIN
TYP
MAX
UNITS
PARAMETER
REFERENCE SECTION
Output Voltage
Line Regulation
Load Regulation
Ripple Rejection
Short Circuit Current Limit
Temperature Stability
Long Term Stability
OSCILLATOR SECTION
Maximum Frequency
Initial Accuracy
Voltage Stability
Temperature Stability
Output Amplitude
Output Pulse Width (Pin 3)
Ramp Voltage Low (Note 1)
Ramp Voltage High (Note 1)
Capacitor Charging Current Range
Timing Resistance Range
Charging Capacitor Range
Dead Time Expansion Capacitor on
Pin 3 (when a small osc. cap is used)
ERROR AMPLIFIER SECTION
Input Offset Voltage
Input Bias Current
Open Loop Voltage Gain
Common Mode Voltage
Common Mode Rejection Ratio
Small Signal Bandwidth
TEST CONDITIONS
MIN
TYP
MAX
4.8
V+ = 8 to 40V
I
L
= 0 to 20mA
f = 120Hz, T
A
= 25
o
C
V
REF
= 0, T
A
= 25
o
C
Over Operating Temperature
Range
T
A
= 25
o
C
-
-
-
-
-
-
5
10
20
66
100
0.3
20
5.2
20
50
-
-
1
-
4.6
-
-
-
-
-
-
5
10
20
66
100
0.3
20
5.4
30
50
-
-
1
-
V
mV
mV
db
mA
%
mV/khr
C
T
= 0.001µF, R
T
= 2KΩ
R
T
and C
T
Constant
V+ = 8 to 40V, T
A
= 25
o
C
Over Operating Temperature
Range
Terminal 3, T
A
= 25
o
C
C
T
= 0.01µF, T
A
= 25
o
C
Pin 7
Pin 7
Pin 7 (5-2 V
BE
)/R
T
Pin 6
Pin 7
Pin 3
-
-
-
-
-
-
-
-
0.03
1.8
0.001
100
300
5
-
-
3.5
0.5
0.6
3.5
-
-
-
-
-
-
1
2
-
-
-
-
2
120
0.1
1000
-
-
-
-
-
-
-
-
0.03
1.8
0.001
100
300
5
-
-
3.5
0.5
0.6
3.5
-
-
-
-
-
-
1
2
-
-
-
-
2
120
0.1
1000
kHz
%
%
%
V
µs
V
V
mA
kΩ
µF
pF
V
CM
= 2.5V
V
CM
= 2.5V
-
-
72
0.5
1
80
-
70
3
5
10
-
3.4
-
-
-
-
60
1.8
-
-
2
1
80
-
70
3
10
10
-
3.4
-
-
mV
µA
dB
V
dB
MHz
T
A
= 25
o
C
T
A
= 25
o
C
A
V
= 0dB, T
A
= 25
o
C
1.8
-
-
3
Specifications CA1524, CA2524, CA3524
Electrical Specifications
T
A
= -55
0
C to +125
o
C for CA1524, 0
o
C to +70
o
C for the CA2524 and CA3524; V+ = 20V and
f = 20kHz, Unless Otherwise Stated. (Continued)
CA1524, CA2524
PARAMETER
Output Voltage
Amplifier Pole
Pin 9 Shutdown Current
COMPARATOR SECTION
Duty Cycle
Input Threshold
Input Threshold
Input Bias Current
CURRENT LIMITING SECTION
Sense Voltage for 25% Output Duty
Cycle
Sense Voltage T.C.
Common Mode Voltage
Rolloff Pole of R51 C3 + Q64
OUTPUT SECTION (EACH OUTUT)
Collector-Emitter Voltage
Collector Leakage Current
Saturation Voltage
Emitter Output Voltage
Rise Time
Fall Time
Total Standby Current: (Note 2) I
S
NOTES:
1. Ramp voltage at Pin 7
High
Low
where
V
CE
= 40V
V+ = 40V, I
C
= 50mA
V+ = 20V
R
C
= 2KΩ, T
A
= 25
o
C
R
C
= 2KΩ, T
A
= 25
o
C
V+ = 40V
40
-
-
17
-
-
-
-
0.1
0.8
18
0.2
0.1
4
-
50
2
-
-
-
10
40
-
-
17
-
-
-
-
0.1
0.8
18
0.2
0.1
4
-
50
2
-
-
-
10
V
µA
V
V
µs
µs
mA
Terminal 9 = 2V with Error
Amplifier Set for Max Out,
T
A
= 25
o
C
190
200
210
180
200
220
mV
% Each Output On
Zero Duty Cycle
Max. Duty Cycle
0
-
-
-
-
1
3.5
1
45
-
-
-
0
-
-
-
-
1
3.5
1
45
-
-
-
%
V
V
µA
External Sink
TEST CONDITIONS
T
A
= 25
o
C
MIN
0.5
-
-
TYP
-
250
200
MAX
3.8
-
-
MIN
0.5
-
-
CA3524
TYP
-
250
200
MAX
3.8
-
-
UNITS
V
Hz
µA
-
-1
-
0.2
-
300
-
+1
-
-
-1
-
0.2
-
300
-
+1
-
mV/
o
C
V
Hz
t = OSC period in microseconds
t
R
T
C
T
with C
T
in microfarads and R
T
in ohms.
t
Output frequency at each output transistor is half OSC frequency when each output is used separately and is equal to the OSC frequency
when each output is connected in parallel.
2. Excluding oscillator charging current, error and current limit dividers, and with outputs open.
4
CA1524, CA2524, CA3524
Schematic Diagram
15 V
IN
A
R1
500
Q1
Q2
Q7
Q6
R12
10K
Q3 Q4
R2
2.7K
Q10
RC
10K
R3
6.3K
D1
10K
Q11
1.9K
R14
450
C4
Q19
RA
5.3K
R8
8.4K
QA
R19 R18
18.7 18.7
K
K
Q12
R6
500
C2
20pF
Q14
R9
500
Q15
N
+
R4
500
8
GND
OSC SECTION
ERROR
AMP
Q42
Q43
Q47
Q48
R43
7.4K
Q59
Q60
R10
1K
P
Q20
Q22
R15
25K
F
G
H
I
Q24
PULSE
STEERING
FLIP-FLOP
R17 R18
18.7 18.7
K
K
Q21
Q23
C
Q9
C1
20pF
RD
Q16
R11
500
R13
6Ω
Q13
Q17
Q18
R5
1K
R7
1K
B
R16
16.2K
16
V
REF
+5V
D2
RB
4.8K
D
E
Q5
6
R
T
Q44
Q49
Q50
R44
1.8K
Q51
Q46
Q45
R39
1K
R41
24K
R40
560
R42
19.8K
Q52
R45
25K
Q53
Q54
Q55 INV.
IN
1
Q56 Q57
2
Q61
NON-INV.
INPUT
J
7
C
T
Q58
OSC.
OUT
3
R47
1K
R46
3.3K
R48
2K
Q62
K
L
5

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