ka2s0880 Fairchild Semiconductor, ka2s0880 Datasheet

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ka2s0880

Manufacturer Part Number
ka2s0880
Description
Smps Controller
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number:
KA2S0880
Manufacturer:
SEC
Quantity:
20 000
Part Number:
ka2s0880B
Manufacturer:
FAIRCHILD
Quantity:
12 500
BLOCK DIAGRAM
SPS
SPS
The SPS product family is specially designed for an off line
SMPS with minimal external component. The SPS consist of
high voltage Power SenseFET and current mode PWM IC.
Included control IC features a tr-immed oscillator, under
voltage lock out, leading edge blanking, optimized gate turn-
on/turn-off driver, thermal shut down protection, over voltage
protection, and temperature compensated precision current
source for loop compensation and fault protection circuitry.
Compared to discrete MOSFET and controller or RCC
switching converter solution, a SPS can reduce total
component count, design size, weight and at the same time
increase efficiency, productivity and system reliability. It has
a basic platform well suited for cost effective monitor power
supply.
FEATURES
1999 Fairchild Semiconductor Corporation
Wide operating frequency range up to 150kHz
Pulse by pulse over current limiting
Over load protection
Over voltage protection (Min. 23V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
External sync terminal
Latch up Mode
#5 Sync
#3 V
#4 FB
CC
5V
2 A
7.5V
25V
32V
1mA
+
+
9V
+
2.5R
OVER VOLTAGE S/D
1R
6.4V
Thermal S/D
+
OSC
Vref
5V
0.1V
L.E.B
Good
logic
S
R
ORDERING INFORMATION
KA2S0880
Q
Device
Power on reset
Internal
bias
S
R
Q
TO-3P-5L
Package
1.DRAIN 2. GND 3. V
TO-3P-5L
SFET
800V, 8A
Rating
CC
#1 DRAIN
#2 GND
25 C to +85 C
4. FB 5. Sync
Topr ( C)
KA2S0880
Rev. B
1

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ka2s0880 Summary of contents

Page 1

... Fairchild Semiconductor Corporation ORDERING INFORMATION Device KA2S0880 5V Internal Vref bias Good logic OSC + S 6. L.E Thermal S/D Power on reset OVER VOLTAGE S/D KA2S0880 TO-3P-5L 1.DRAIN 2. GND Sync CC Package Rating Topr ( C) TO-3P-5L 800V + DRAIN SFET #2 GND Q Rev ...

Page 2

... KA2S0880 ABSOLUTE MAXIMUM RATINGS Characteristic (1) Drain-source (GND) voltage Drain-Gate voltage (R = Gate-source (GND) voltage (2) Drain current pulsed Single pulsed avalanche energy (4) Avalanche current Continuous drain current (T = Continuous drain current (T =100 C) C Supply voltage Analog input voltage range Total power dissipation ...

Page 3

... DD DSS (MOSFET switching tr time are essentially td(off) independent of operating temperature =10V, I =8.0A =0.5BV DS DSS switching time are Qgs essentially independent of Qgd operating temperature) 2% KA2S0880 Min. Typ. Max. 800 = 200 1.2 1.5 1.5 2.5 2460 210 =8. 200 150 450 60 150 ...

Page 4

... KA2S0880 ELECTRICAL CHARACTERISTICS (Control part) (Ta=25 C unless otherwise specified) Characteristic REFERENCE SECTION (1) Output voltage (1)(2) Temperature Stability OSCILLATOR SECTION Initial accuracy Frequency change with temperature (3) Sync threshold voltage PWM SECTION Maximum duty cycle FEEDBACK SECTION Feedback source current Shutdown delay current OVER CURRENT PROTECTION SECTION ...

Page 5

... SPS TYPICAL PERFORMANCE CHARACTERISTICS (These characteristic graphs are normalized at Ta=25 C) Figure 1. Operating Frequency Figure 3. Operating Current Figure 5. Start up Current Figure 2. Feedback Source Current Figure 4. Max. Inductor Current Figure 6. Start Threshold Voltage KA2S0880 5 ...

Page 6

... KA2S0880 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (These characteristic graphs are normalized at Ta=25 C) Figure 7. Stop Threshold Voltage Figure 9. V Zener Voltage CC Figure 11. Shutdown Delay Current 6 Figure 8. Maximum Duty Cycle Figure 10. Shutdown Feedback Voltage Figure 12. Over Voltage Protection SPS ...

Page 7

... SPS TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (These characteristic grahps are normalized at Ta=25 C) Figure 13. Soft Start Voltage Figure 14. Drain Source Turn-on Resistance KA2S0880 7 ...

Page 8

... TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ACEx™ CoolFET™ CROSSVOLT™ CMOS FACT™ FACT Quiet Series™ ® FAST FASTr™ ...

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