KA3525A Fairchild Semiconductor, KA3525A Datasheet

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KA3525A

Manufacturer Part Number
KA3525A
Description
IC CONTROLLER PWM SMPS 16-DIP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of KA3525A

Pwm Type
Voltage Mode
Number Of Outputs
2
Frequency - Max
430kHz
Duty Cycle
49%
Voltage - Supply
8 V ~ 35 V
Buck
No
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Operating Temperature
0°C ~ 70°C
Package / Case
16-DIP (0.300", 7.62mm)
Frequency-max
430kHz
Output Voltage
5 V
Output Current
500 mA
Supply Current
20 mA
Mounting Style
Through Hole
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Primary Input Voltage
35V
No. Of Outputs
2
No. Of Pins
16
Operating Temperature Range
0°C To +70°C
Termination Type
Through Hole
Startup Current
8000µA
Rohs Compliant
Yes
Filter Terminals
Through Hole
Controller Type
SMPS
Controller Type, Ic
Switching Regulator
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Features
• 5V 1% Reference
• Oscillator Sync Terminal
• Internal Soft Start
• Deadtime Control
• Under Voltage Lockout
Internal Block Diagram
©2002 Fairchild Semiconductor Corporation
KA3525A
SMPS Controller
EAOUT
C
(SOFT
START)
V
SHUT DOWN
EA(+)
EA(-)
GND
V
REF
CC
10
15
12
16
9
8
1
2
5K
_
ERR
AMP
+
5K
C
DISCHARGE
T
5
7
BAND GAP
REF 5V
OSCILLATOR
SYNC
PWM
COMP
+
_
3
R
6
T
Description
The KA3525A is a monolithic integrated circuit that
includes all of the control circuits necessary for a pulse width
modulating regulator. There are a voltage reference, an error
amplifier, a pulse width modulator, an oscillator, an under
voltage lockout, a soft start circuit, and the output driver in
the chip.
U.V.L.O.
OSC
OUTPUT
4
16-DIP
LATCH
S
1
F/F
R
Q
Q
www.fairchildsemi.com
OUTPUT B
OUTPUT A
Rev. 1.0.1
VC
13
14
11

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KA3525A Summary of contents

Page 1

... DISCHARGE ©2002 Fairchild Semiconductor Corporation Description The KA3525A is a monolithic integrated circuit that includes all of the control circuits necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, an under voltage lockout, a soft start circuit, and the output driver in the chip ...

Page 2

... KA3525A Absolute Maximum Ratings Parameter Supply Voltage Collector Supply Voltage Output Current, Sink or Source Reference Output Current Oscillator Charging Current Power Dissipation ( Operating Temperature Storage Temperature Lead Temperature (Soldering, 10sec) Electrical Characteristics (V = 20V +70 C, unless otherwise specified Parameter REFERENCE SECTION Reference Output Voltage ...

Page 3

... OL I SINK 100mA OL II SINK 20mA CH I SOURCE 100mA CH II SOURCE V V and V = High 35V LKG 1uF 1uF 35V CC CC =0.01uF Min. Typ. Max. Unit - - 1 0 0.7 0 3.2 3 0.3 0.7 - 0.9 1.3 1 0.1 0 200 - 80 600 - 70 300 - 12 20 KA3525A ...

Page 4

... KA3525A Test Circuit 16 Vcc 15 3k 0.1 RWM ADJ 12 10k 1 2 1.5K 10K 0. SOFT START 5.0uF 10 5.0k V REF SHUTDOWN 4 BAND GAP U.V.L.O. REF 5V _ ERR _ AMP LATCH ERR S + AMP OSCILLATOR CLOCK 5.0k 5. 100 RAMP 0.001 + 0.009 0.1 13 0.1 OUT 10k 10k B F/F ...

Page 5

... Mechanical Dimensions Package 6.40 0.20 0.252 0.008 #1 # 7.62 0.300 16-DIP 3.25 0.20 0.128 0.008 5.08 MAX 0.200 KA3525A 0.38 MIN 0.014 3.30 0.30 0.130 0.012 5 ...

Page 6

... KA3525A Ordering Information Product Number Package KA3525A 16-DIP DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS ...

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