ML4827IS-2 Просмотр технического описания (PDF) - Fairchild Semiconductor
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ML4827IS-2 Datasheet PDF : 16 Pages
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ML4827
PRODUCT SPECIFICATION
Pin Configuration
ML4827
16-Pin PDIP (P16)
16-Pin Wide SOIC (S16W)
IEAO 1
16 VEAO
IAC 2
15 VFB
ISENSE 3
VRMS 4
14 VREF
13 VCC
SS 5
12 PFC OUT
VDC 6
11 PWM OUT
RAMP 1 7
10 GND
RAMP 2 8
9 DC ILIMIT
TOP VIEW
Pin Description
PIN
NAME
1
IEAO
2
IAC
3
ISENSE
4
VRMS
5
SS
6
VDC
7
RAMP 1
8
RAMP 2
9
DC ILIMIT
10
GND
11
PWM OUT
12
PFC OUT
13
VCC
14
VREF
15
VFB
16
VEAO
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
PFC (master) oscillator input; fOSC set by RTCT
When in current mode, this pin functions as as the current sense input; when in
voltage mode, it is the PWM (slave) oscillator input.
PWM current limit comparator input
Ground
PWM driver output
PFC driver output
Positive supply (connected to an internal shunt regulator)
Buffered output for the internal 7.5V reference
PFC transconductance voltage error amplifier input, and TriFault Detect input
PFC transconductance voltage error amplifier output
Absolute Maximum Ratings
Absolute Maximum Ratings are those values, beyond which the device could be permanently damaged. Absolute maximum
ratings are stress ratings only and functional device operation is not implied.
Parameter
VCC Shunt Regulator Current
ISENSE Voltage
Voltage on any other Pin
IREF
IAC Input Current
Min.
–3
GND-0.3
Max.
55
5
VCCZ +0.3
20
10
Units
mA
V
V
mA
mA
2
REV. 1.0.1 6/27/01
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