ka2s0880b Fairchild Semiconductor, ka2s0880b Datasheet

no-image

ka2s0880b

Manufacturer Part Number
ka2s0880b
Description
Fairchild Power Switch Sps
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KA2S0880B
Manufacturer:
FAIRCHILD
Quantity:
12 500
Features
• 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
Internal Block Diagram
©2001 Fairchild Semiconductor Corporation
KA2S0880B
Fairchild Power Switch(SPS)
#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
Description
The SPS product family is specially designed for an off-line
SMPS with minimal external components. The SPS consist of
high voltage power SenseFET and current mode PWM Control-
ler IC. PWM controller features integrated fixed oscillator,
under voltage lockout, leading edge blanking, optimized gate
turn-on/turn-off driver, thermal shut down protection, over volt-
age protection, temperature compensated precision current
sources for loop compensation and fault protection circuit.
Compared to discrete MOSFET and controller or RCC switch-
ing 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 design in monitor power supply.
Q
1. DRAIN 2. GND 3. V
Power on reset
Internal
TO-3P-5L
bias
S
R
Q
SFET
CC
4. FB 5. Sync
www.fairchildsemi.com
#1 DRAIN
#2 GND
Rev.1.0.1

Related parts for ka2s0880b

ka2s0880b Summary of contents

Page 1

... KA2S0880B Fairchild Power Switch(SPS) Features • 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 • ...

Page 2

... KA2S0880B Absolute Maximum Ratings Parameter (1) Maximum Drain 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 Maximum Supply voltage Input voltage range Total power dissipation ...

Page 3

... GS DS Coss f=1MHz Crss td(on) V =0.5BV DD DSS (MOSFET switching tr time are essentially td(off) independent of tf operating temperature) V =10V, I =8.0A =0.5BV DS DSS switching time are Qgs essentially independent of Qgd operating temperature) 2% KA2S0880B Min. Typ. Max. 800 - - - - 200 - 1.2 1.5 1.5 2 2460 - - 210 - - =8. ...

Page 4

... KA2S0880B Electrical Characteristics (CONTROL part) (Ta=25 C unless otherwise specified) Parameter UVLO SECTION Start threshold voltage Stop threshold voltage OSCILLATOR SECTION Initial accuracy Frequency change with temperature Maximum duty cycle FEEDBACK SECTION Feedback source current Shutdown Feedback voltage Shutdown delay current SYNC. & SOFT START SECTION ...

Page 5

... C 1.15 1.1 1.05 V Vstart th(H) 1 0.95 0.9 0.85 100 125 150 ] C Figure 6. Start Threshold Voltage KA2S0880B Fig.2 Feedback Source Current 100 125 150 Temperature [ ] C Fig.4 Max Inductor Current 100 125 150 Temperature [ ] C Figure 4. Peak Current Limit Fig.6 Start Threshold Voltage ...

Page 6

... KA2S0880B Typical Performance Characteristics (These characteristic graphs are normalized at Ta=25 C) Fig.7 Stop Threshold Voltage 1.15 1.1 1.05 V Vstop th(L) 1 0.95 0.9 0.85 - Temperature [ Figure 7. Stop Threshold Voltage Fig.9 Vcc Zener Voltage 1.2 1.15 1.1 1. 0.95 0.9 0.85 0.8 - Temperature [ Figure 9. V Zener Voltage CC Fig.11 Shutdown Delay Current 1.2 1.15 1.1 1.05 Idelay 1 0.95 0.9 0.85 0.8 -25 ...

Page 7

... Ta=25 C) Fig.13 Soft Start Voltage 1.15 1.1 1.05 Vss 1 0.95 0.9 0.85 - Temperature [ Figure 13. Soft Start Voltage (Continued) 2.5 2 1.5 Rdson ( ) 1 0.5 0 100 125 150 ] C Figure 14. Static Drain-Source on Resistance Fig.14 Drain Source Turn-on Resistance - 100 125 150 Temperature [ ] C KA2S0880B 7 ...

Page 8

... KA2S0880B Package Dimensions 8 TO-3P-5L ...

Page 9

... Package Dimensions (Continued) TO-3P-5L (Forming) KA2S0880B 9 ...

Page 10

... KA2S0880B Ordering Information Product Number Package KA2S0880B-TU TO-3P-5L KA2S0880B-YDTU TO-3P-5L(Forming Non Forming Type YDTU : Forming Type 10 Rating Operating Temperature 800V,8A - +85 C ...

Page 11

... KA2S0880B 11 ...

Page 12

... KA2S0880B 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. ...

Related keywords