ML4801 查看數據表（PDF） - Micro Linear Corporation
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ML4801 Datasheet PDF : 14 Pages
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ML4801
PIN CONFIGURATION
ML4801
16-Pin PDIP (P16)
16-Pin Narrow SOIC (S16N)
IEAO 1
16 VEAO
IAC 2
ISENSE 3
VRMS 4
SS 5
15 VFB
14 VREF
13 VCC
12 PFC OUT
VDC 6
11 PWM OUT
RTCT 7
10 GND
RAMP 1 8
9 RAMP 2
TOP VIEW
PIN DESCRIPTION
PIN NAME
1 IEAO
2 IAC
3 ISENSE
4 VRMS
5 SS
6 VDC
7 RTCT
8 RAMP 1
FUNCTION
PFC transconductance current error
amplifier output
PFC gain control reference input
Current sense input to the PFC current
limit comparator
Input for PFC RMS line voltage
compensation
Connection point for the PWM soft start
capacitor
PWM voltage feedback input
Connection for oscillator frequency
setting components
PFC ramp input
PIN NAME
FUNCTION
9 RAMP 2 PWM ramp current sense input
10 GND
Ground
11 PWM OUT PWM driver output
12 PFC OUT PFC driver output
13 VCC
Positive supply (connected to an
internal shunt regulator).
14 VREF
Buffered output for the internal 7.5V
reference
15 VFB
PFC transconductance voltage error
amplifier input
16 VEAO
PFC transconductance voltage error
amplifier output
2
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