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ML4812IP bảng dữ liệu(PDF) 2 Page - Micro Linear Corporation

tên linh kiện ML4812IP
Giải thích chi tiết về linh kiện  Power Factor Controller
PDF  16 Pages
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nhà sản xuất  MICRO-LINEAR [Micro Linear Corporation]
Trang chủ  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4812IP bảng dữ liệu(HTML) 2 Page - Micro Linear Corporation

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ML4812
2
PIN CONFIGURATION
PIN
NAME
FUNCTION
1
ISENSE
Input from the current sense
transformer to the non-inverting input
of the PWM comparator.
2
GM OUT
Output of gain modulator.
A resistor to ground on this pin
converts the current to a voltage.
This pin is clamped to 5V and tied
to the inverting input of the PWM
comparator.
3
EA OUT
Output of error amplifier.
4
EA–
Inverting input to error amplifier.
5
OVP
Input to over voltage comparator.
6
ISINE
Current gain modulator input.
7
RAMP
COMP
Buffered output from the oscillator
ramp (CT). A resistor to ground sets the
current which is internally subtracted
from the product of ISINE and IEA in
the gain modulator.
PIN
NAME
FUNCTION
8RT
Oscillator timing resistor pin. A 5V
source sets a current in the external
resistor which is mirrored to charge
CT.
9
CLOCK
Digital clock output.
10
SHDN
A TTL compatible low level on this
pin turns off the output.
11
PWR GND Return for the high current totem pole
output.
12
OUT
High current totem pole output.
13
VCC
Positive Supply for the IC.
14
VREF
Buffered output for the 5V voltage
reference.
15
GND
Analog signal ground.
16
CT
Timing capacitor for the oscillator.
PIN DESCRIPTION
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ISENSE
GM OUT
EA OUT
EA–
OVP
ISINE
RAMP COMP
RT
CT
GND
VREF
VCC
OUT
PWR GND
SHDN
CLOCK
TOP VIEW
ML4812
16-Pin PDIP (P16)
TOP VIEW
ML4812
20-Pin PLCC (Q20)
EA OUT
EA–
NC
OVP
ISINE
VREF
VCC
NC
OUT
PWR GND
4
5
6
7
8
18
17
16
15
14
32
1 20 19
910 11 12 13



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