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ML4805IS Datasheet(PDF) 2 Page - Micro Linear Corporation

Part # ML4805IS
Description  Variable Feedforward PFC/PWM Controller Combo
Download  13 Pages
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Manufacturer  MICRO-LINEAR [Micro Linear Corporation]
Direct Link  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4805IS Datasheet(HTML) 2 Page - Micro Linear Corporation

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ML4805
2
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NAME
FUNCTION
9
RAMP 2
PWM ramp sense input
10
ILIM
PWM current limit sense input
11
AGND
Analog ground
12
PGND
Power ground
13
PWM OUT PWM driver output
14
PFC OUT
PFC driver output
15
VCC
Positive supply (connected to an
internal shunt regulator).
16
VREF
Buffered output for the internal 7.5V
reference
17
VFB
PFC transconductance voltage error
amplifier input
18
VEAO
PFC transconductance voltage error
amplifier output
PIN
NAME
FUNCTION
1
IEAO
PFC transconductance current error
amplifier output
2IAC
PFC gain control reference input
3ISENSE
Current sense input to the PFC current
limit comparator
4VRMS
Input for PFC RMS line voltage
compensation
5
SS
Connection point for the PWM soft start
capacitor
6VDC
PWM voltage feedback input
7RTCT
Connection for oscillator frequency
setting components
8
RAMP 1
PFC ramp input
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
IEAO
IAC
ISENSE
VRMS
SS
VDC
RTCT
RAMP 1
RAMP 2
VEAO
VFB
VREF
VCC
PFC OUT
PWM OUT
PGND
AGND
ILIM
TOP VIEW
ML4805
18-Pin PDIP (P18)
18-Pin SOIC (S18)


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