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1L0380RB KA1L0380RB Datasheet |
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| Part Number | 1L0380RB |
| Description | KA1L0380RB |
| Manufacture | Fairchild Semiconductor |
| Total Page | 12 Pages |
| Datasheet |
www.fairchildsemi.com
KA1L0380B/KA1L0380RB/KA1M0380RB/
KA1H0380RB
Fairchild Power Switch(SPS)
Features
• Precision fixed operating frequency
• KA1L0380B/KA1L0380RB (50KHz)
• KA1M0380RB (67KHz)
• KA1H0380RB (100KHz)
www.DataSheet4U•.coPmulse 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
• Auto restart (KA1L0380RB/KA1M0380RB/KA1H0380RB)
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 lock out, 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 either a flyback converter or a
forward converter.
TO-220F-4L
Internal Block Diagram
1
1. GND 2. DRAIN 3. VCC 4. FB
#3 VCC
#4 FB
32V 5V Internal
Vref bias
Good
logic
5µA
7.5V
25V
9V
1mA
2.5R
1R
+
OSC
−
+
S
Q
R
L.E.B
0.1V
−
+ Thermal S/D
−
OVER VOLTAGE S/D
S
Q
R
Power on reset
©2000 Fairchild Semiconductor International
SFET
#2 DRAIN
#1 GND
Rev. .5.0
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KA1L0380B/KA1L0380RB/KA1M0380RB/KA1H0380RB
Absolute Maximum Ratings
Parameter
Drain-source (GND) voltage (1)
Drain-Gate voltage (RGS=1MΩ)
Gate-source (GND) voltage
Drain current pulsed (2)
Single pulsed avalanche energy (3)
Avalanche current(4)
Continuous drain current (TC=25°C)
Continuous drain current (TC=100°C)
www.DataSheet4U.cSoumpply voltage
Analog input voltage range
Total power dissipation
Symbol
VDSS
VDGR
VGS
IDM
EAS
IAS
ID
ID
VCC
VFB
PD
Derating
Operating temperature
Storage temperature
TOPR
TSTG
Notes:
1. Tj=25°C to 150°C
2. Repetitive rating: Pulse width limited by maximum junction temperature
3. L=51mH, VDD=50V, RG=25Ω, starting Tj=25°C
4. L=13µH, starting Tj=25°C
Value
800
800
±30
12
95
6
3.0
2.1
30
−0.3 to VSD
35
0.28
−25 to +85
−55 to +150
Unit
V
V
V
ADC
mJ
A
ADC
ADC
V
V
W
W/°C
°C
°C
2
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| Features | www.fairchildsemi.com KA1L0380B/KA1L038 0RB/KA1M0380RB/ KA1H0380RB Fairchild Po wer Switch(SPS) Features • Precision fixed operating frequency • KA1L0380B /KA1L0380RB (50KHz) • KA1M0380RB (67K Hz) • KA1H0380RB (100KHz) www.DataShe et4U.com • Pulse by pulse over curren t limiting • Over load protection • Over voltage protection (Min. 23V) • Internal thermal shutdown function • Under voltage lockout • Internal hig h voltage sense FET • Auto restart (K A1L0380RB/KA1M0380RB/KA1H0380RB) Descr iption The SPS product family is specia lly designed for an off-line SMPS with minimal external components. The SPS co nsist of high voltage power SenseFET an d current mode PWM controller IC. PWM c ontroller features integrated fixed osc illator, under voltage lock out, leadin g edge blanking, optimized gate turn-on /turn-off driver, thermal shut down pro tection, over voltage protection, tempe rature compensated precision current so urces for loop compensation and fault protection circuit. Compared to discrete MOSFET. |
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