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1L0380RB PDF 데이터시트 ( Data , Function )

부품번호 1L0380RB 기능
기능 KA1L0380RB
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1L0380RB 데이터시트, 핀배열, 회로
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




1L0380RB pdf, 반도체, 판매, 대치품
KA1L0380B/KA1L0380RB/KA1M0380RB/KA1H0380RB
Electrical Characteristics (CONTROL part)
(Ta=25°C unless otherwise specified)
Parameter
REFERENCE SECTION
Output voltage (1)
Temperature Stability (1)(2)
OSCILLATOR SECTION
Symbol
Vref
Vref/T
Initial accuracy
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Frequency change with temperature (2)
PWM SECTION
FOSC
F/T
Maximum duty cycle
Dmax
FEEDBACK SECTION
Feedback source current
IFB
Shutdown delay current
Idelay
OVER CURRENT PROTECTION SECTION
Over current protection
IL(max)
UVLO SECTION
Start threshold voltage
Vth(H)
Minimum operating voltage
Vth(L)
TOTAL STANDBY CURRENT SECTION
Start current
IST
Operating supply current
(control part only)
IOPR
VCC zener voltage
VZ
SHUTDOWN SECTION
Shutdown Feedback voltage
Thermal shutdown temperature (Tj) (1)
VSD
TSD
Over voltage protection voltage
VOVP
Condition
Ta=25°C
25°CTa+85°C
KA1L0380B
KA1L0380RB
KA1M0380RB
KA1H0380RB
25°CTa+85°C
KA1L0380B
KA1L0380RB
KA1M0380RB
KA1H0380RB
Ta=25°C, 0VVfb3V
Ta=25°C, 5VVfbVSD
Max. inductor current
-
After turn on
VCC=14V
Ta=25°C
ICC=20mA
-
-
-
Min. Typ. Max. Unit
4.80 5.00 5.20 V
- 0.3 0.6 mV/°C
45 50 55
45 50 55
kHz
61 67 73
90 100 110
- ±5 ±10 %
74 77 80
74 77 80
74 77 80
64 67 70
%
0.7 0.9 1.1 mA
4.0 5.0 6.0 µA
1.89 2.15 2.41 A
14 15 16
9 10 11
V
V
0.1 0.3 0.45 mA
6 12 18 mA
30 32.5 35
V
6.9 7.5 8.1
140 160
-
23 25 28
V
°C
V
Notes:
1. These parameters, although guaranteed, are not 100% tested in production
2. These parameters, although guaranteed, are tested in EDS (wafer test) process
4

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1L0380RB 전자부품, 판매, 대치품
KA1L0380B/KA1L0380RB/KA1M0380RB/KA1H0380RB
Typical Performance Characteristics (Continued)
(These characteristic grahps are normalized at Ta=25°C)
www.DataSheet4U.com
Fig.14 Drain Source Turn-on
Res is tance
2.5
2
1.5
Rdson 1
0.5
0
-25 0 25 50 75 100 125 150
Temperature [°C]
Figure 13. Drain Source Turn-on Resistance
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부품번호상세설명 및 기능제조사
1L0380RB

KA1L0380RB

Fairchild Semiconductor
Fairchild Semiconductor

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