KA7500B Fairchild Semiconductor, KA7500B Datasheet

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KA7500B

Manufacturer Part Number
KA7500B
Description
IC CTLR SMPS 42V 250MA 16-DIP
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of KA7500B

Pwm Type
Controller
Number Of Outputs
1
Frequency - Max
300kHz
Duty Cycle
45%
Voltage - Supply
7 V ~ 42 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
300kHz
Output Current
0.25 A
Input Voltage
42.3 V
Mounting Style
Through Hole
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Manufacturer
Quantity
Price
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KA7500B
Manufacturer:
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Features
• Internal Regulator Provides a Stable 5V Reference Supply
• Uncommitted Output TR for 200mA Sink or Source
• Output Control For Push-Pull or Single Ended Operation
• Variable Duty Cycle By Dead Time Control (Pin 4)
• On-Chip Oscillator With Master or Slave Operation
• Internal Circuit Prohibits Double Pulse at Either Output
Internal Block Diagram
©2002 Fairchild Semiconductor Corporation
KA7500B
SMPS Controller
Trimmed to 5%
Current
Complete PWM Control Circuit
Description
The KA7500B is used for the control circuit of the PWM
switching regulator. The KA7500B consists of 5V reference
voltage circuit, two error amplifiers, a flip flop, an output
control circuit, a PWM comparator, a dead time comparator
and an oscillator. This device can be operated in the
switching frequency of 1kHz to 300kHz.
16-SOP
16-DIP
1
1
www.fairchildsemi.com
Rev. 1.0.0

Related parts for KA7500B

KA7500B Summary of contents

Page 1

... Internal Block Diagram ©2002 Fairchild Semiconductor Corporation www.fairchildsemi.com Description The KA7500B is used for the control circuit of the PWM switching regulator. The KA7500B consists of 5V reference voltage circuit, two error amplifiers, a flip flop, an output control circuit, a PWM comparator, a dead time comparator and an oscillator. This device can be operated in the switching frequency of 1kHz to 300kHz ...

Page 2

... KA7500B Absolute Maximum Ratings Parameter Supply Voltage Collector Supply Voltage Output Current Amplifier Input Voltage Power Dissipation ( Operating Temperature Range Storage Temperature Range 2 Symbol Value 250 +0 (KA7500B 0.9 (KA7500BD +70 OPR T -65 ~ +150 STG Unit ...

Page 3

... V 40V 0. . Zero Duty Cycle ITH I V =0.7V SINK 200mA CE(SAT 15V -200mA CC(SAT 40V 40V C(OFF 40V E(OFF Pin 15V CC REF KA7500B Min. Typ. Max. Unit 4.75 5 0. kHz - - -2.0 - 3 250 mA - 0.2 1 650 - ...

Page 4

... KA7500B Typical Application Pulse Width Modulated Step-down Converter KSA1010 V =10V to 40V Vcc C2 C1 KA7500B E1 D.T E2 GND 50uF 50V 4 150 1M 0.1uF COMP INPUT V 14 REF - + 0.001uF 47k Vo=5V 1mH,2A Io=1A 50uF 10V 5.1k 5.1k 5.1k 150 + 50uF 10V GND 0.1 ...

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 KA7500B 0.38 MIN 0.014 3.30 0.30 0.130 0.012 5 ...

Page 6

... KA7500B Mechanical Dimensions Package #1 #8 6.00 0.236 3.95 0.156 0.225 0.70 0.20 0.0275 0.008 6 (Continued) 16-SOP 0.05 MIN 0.002 1.55 0.10 0.061 0.004 #16 #9 0.30 1.80 MAX 0.071 0.012 0.20 0.008 5.72 ...

Page 7

... Ordering Information Product Number Package KA7500B 16-DIP KA7500BD 16-SOP Operating Temperature 0 ~ +70 C KA7500B 7 ...

Page 8

... KA7500B 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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