ml4810cs Microsemi Corporation, ml4810cs Datasheet - Page 2

• Manufacturer Part Number: ml4810cs
• Description: High Frequency Power Supply Controller
• Manufacturer: Microsemi Corporation

ML4810, ML4811
PIN CONFIGURATION
PIN DESCRIPTION
2
PIN NAME
10 SYNC
1
2
3
4
5
6
7
8
9
INV
NI
E/A OUT
RC
CLOCK
R
C
RAMP
SOFT START Normally connected to Soft Start
T
T
RESET
SOFT START
E/A OUT
RC
RAMP
RESET
INV
NI
R
C
T
T
16-Pin SOIC (S16W)
16-Pin DIP (P16)
FUNCTION
Inverting input to error amp.
Non-inverting input to error amp.
Output of error amplifier and input to
main comparator.
Timing elements for Integrating Soft
Start reset.
Oscillator output.
Timing resistor for oscillator — sets
charging current for oscillator timing
capacitor (pin 6).
Timing capacitor for oscillator.
Non-inverting input to main
comparator. Connected to C
voltage mode operation or to current
sense resistor for current mode.
capacitor.
A high going pulse terminates the
PWM cycle and discharges C
1
2
3
4
5
6
7
8
ML4810
TOP VIEW
16
15
14
13
12
11
10
9
5.1V REF
V
OUTB
POWER V
PWR GND
OUTA
GND
I
LIM
CC
/S.D.
C
T
T
for
.
PIN NAME
12 I
13 GND
14 OUTA
15 PWR GND
16 V
17 OUTB
18 V
19 5.1V REF
20 RESET DELAY Timing capacitor to determine the
11 OVP
LIM
C
CC
/S.D.
SOFT START
E/A OUT
RC
CLOCK
RAMP
SYNC
RESET
INV
C
NI
R
20-Pin SOIC (S20)
20-Pin DIP (P20)
T
T
FUNCTION
Exceeding 2.5V terminates the PWM
cycle and inhibits the outputs.
Current limit sense pin. Normally
connected to current sense resistor.
Analog signal ground.
High current totem pole output. This
output is the first one energized after
power on reset.
Return for the high current totem
pole outputs.
Positive supply for the high current
totem pole outputs.
High current totem pole output.
Positive supply for the IC.
Buffered output for the 5.1V voltage
reference.
amount of delay between fault.
10
ML4811
1
2
3
4
5
6
7
8
9
TOP VIEW
20
19
18
17
16
15
14
13
12
11
RESET DELAY
5.1V REF
V
OUTB
POWER V
PWR GND
OUTA
GND
I
OVP
LIM
CC
/S.D.
C