KA7552A Fairchild Semiconductor, KA7552A Datasheet

IC CONTROLLER PWM SMPS 8-DIP

KA7552A

Manufacturer Part Number
KA7552A
Description
IC CONTROLLER PWM SMPS 8-DIP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of KA7552A

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
600kHz
Duty Cycle
74%
Voltage - Supply
9.2 V ~ 30 V
Buck
No
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Operating Temperature
-25°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Frequency-max
600kHz
Operating Temperature Range
- 25 C to + 85 C
Mounting Style
Through Hole
Output Voltage
16.5V
Output Current
100mA
Frequency
135kHz
Power Dissipation Pd
800mW
Supply Voltage Range
10V To 30V
Digital Ic Case Style
DIP
No. Of Pins
8
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KA7552A
Manufacturer:
FAIRCHILD
Quantity:
256
Part Number:
KA7552A
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Features
• Built-in drive circuits for direct connection power
• Wide operating frequency range (5kHz ~ 600kHz)
• Pulse by pulse over current limiting
• Over load protection
• On/off control by external trigger
• Internal UVLO
• Low standby current (typ. 90uA)
• Soft start circuit
Internal Block Diagram
©2004 Fairchild Semiconductor Corporation
KA7552A/KA7553A
SMPS Controller
MOSFET (l
FB
2
4.3K
BIAS
(4V)
O
= ±1.5A)
2.8V
OFF
+
-
0.24V
3.6V
IS(+)
+
3
+
_
2.4V
1.9V
-
0.56 ~ 0.42V
_
+
+
-
7V
-
-
O.C.P
PWM
Description
The KA7552A/KA7553A are switching power control IC
for wide operating frequency range. The internal circuits
include pulse by pulse current limiting, protection, on/off
control by external trigger, low standby current, soft start,
and high current totempole output for driving a POWER
MOSFET. Maximum duty of the KA7552A is 70% and the
KA7553A is 46%. When duty is maximum, the input
threshold voltage of pin2 & pin8 are not same in KA7552A
and KA7553A.
CS
8
8-DIP
R
C
S
7
T
OSC
1
Q
R
1
T
10uA
UVLO
www.fairchildsemi.com
GND
V
CC
4
6
Rev. 1.0.2
5
OUTPUT

Related parts for KA7552A

KA7552A Summary of contents

Page 1

... POWER MOSFET. Maximum duty of the KA7552A is 70% and the KA7553A is 46%. When duty is maximum, the input threshold voltage of pin2 & pin8 are not same in KA7552A and KA7553A. 8-DIP 1 ...

Page 2

... KA7552A/KA7553A Absolute Maximum Ratings Parameter Supply voltage Output current Input voltage at overcurrent detection pin Input voltage at FB pin Input current at CS pin Total power dissipation (Ta = 25°C) Operating temperature Storage temperature range Junction temperature Electrical Characteristics (V = 18V 135kHz OSC Parameter OSCILLATOR SECTION ...

Page 3

... CC(OFF) PIN8 I V CC(SD) PIN8 Conditions Min. Typ. - 15.5 16.0 - 8.20 8.70 - 6.40 7. -15 : OFF->ON 0.45 0. -> OFF 0.30 0.42 = 18V - CC = 18V 16.0 16 14V - = 7.6V - KA7552A/KA7553A Max. Unit 16.5 V 9.20 V 8. 0.70 V 0.55 V 1.3 1 150 1.1 1.8 mA 1.1 1 ...

Page 4

... KA7552A/KA7553A Mechanical Dimensions Package 6.40 0.20 0.252 0.008 #1 #4 7.62 0.300 4 8-DIP #8 #5 5.08 MAX 0.200 3.40 0.20 0.134 0.008 Dimensions in millimeters 3.30 0.30 0.130 0.012 0.33 MIN 0.013 ...

Page 5

... Ordering Information Product Number Package KA7552A 8-DIP KA7553A Operating Temperature -25 ~ +85°C KA7552A/KA7553A 5 ...

Page 6

... KA7552A/KA7553A 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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