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Fairchild Semiconductor Electronic Components Datasheet

KA5M0765RQC Datasheet

Fairchild Power Switch(SPS)

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KA5M0765RQC
Fairchild Power Switch(SPS)
www.fairchildsemi.com
Features
• Precision fixed operating frequency (70KHz)
• Low start-up current (Typ. 100µA)
• Pulse by pulse current limiting
• Over load protection
• Over current protection
• Over voltage protection (Min. 25V)
• Internal thermal shutdown function
• Under voltage lockout
• Internal high voltage sense FET
• Auto-restart mode
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 IC.
Included PWM controller features integrated fixed frequency
oscillator, under voltage lock-out, leading edge blanking, opti-
mized gate turn-on/turn-off driver, thermal shutdown protec-
tion, over voltage protection, and temperature compensated
precision current sources for loop compensation and fault pro-
tection circuitry. Compared to discrete MOSFET and PWM
controller or RCC solution, a SPS can reduce total component
count, design size, weight and at the same time increase effi-
ciency, productivity, and system reliability.
It has a basic platform well suited for cost-effective design in
either a flyback converter or a forward converter.
TO-220-5L
1
1. DRAIN 2. GND 3. VCC 4. FB 5. S/S
Internal Block Diagram
Vcc Drain
31
OVP
+
OVP - ou t
27V -
VCC VREF 15V/9V
5uA 1mA
Feedback 4
Soft Start 5
2.5R
+ 5V
7.5V
- OLP
TSD
(TJ=150)
OVP - ou t
( VC C =2 7V)
OCL
( VS= 1 .4 V)
R
UVL O
Vref
OSC
CLK
INTERNAL
BIA S
Good Logic
SQ
-
LEB R
+
VO F FSE T
VOLTAG E
LIMIT Sense
CIRCUIT
FET
14V
VS
Power-on Reset
/Auto-restart
S
Q
R
Sh utd o wn
L at ch
Rsen se
2 GND
LEB : Leading Edge Blanking
OCL : Over Current Limit
©2001 Fairchild Semiconductor Corporation
Rev.1.0.1


Fairchild Semiconductor Electronic Components Datasheet

KA5M0765RQC Datasheet

Fairchild Power Switch(SPS)

No Preview Available !

KA5M0765RQC
Absolute Maximum Ratings
Parameter
Maximum Drain voltage (1)
Drain-Gate voltage (RGS=1M)
Gate-source (GND) voltage
Drain current pulsed (2)
Single pulsed avalanche energy (3)
Continuous drain current (TC=25°C)
Continuous drain current (TC=100°C)
Maximum Supply voltage
Input voltage range
Total power dissipation
Symbol
VD,MAX
VDGR
VGS
IDM
EAS
ID
ID
VCC,MAX
VFB
PD
Derating
Operating ambient temperature
Storage temperature
TA
TSTG
Notes:
1. Tj=25°C to 150°C
2. Repetitive rating: Pulse width limited by maximum junction temperature
3. L=24mH, starting Tj=25°C
Value
650
650
±30
28.0
570
7.0
5.6
30
0.3 to VSD
140
1.11
25 to +85
55 to +150
Unit
V
V
V
ADC
mJ
ADC
ADC
V
V
W
W/°C
°C
°C
2


Part Number KA5M0765RQC
Description Fairchild Power Switch(SPS)
Maker Fairchild
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