ml4825cs Microsemi Corporation, ml4825cs Datasheet - Page 2

• Manufacturer Part Number: ml4825cs
• Description: High Frequency Power Supply Controller
• Manufacturer: Microsemi Corporation

ML4825
PIN CONFIGURATION
PIN DESCRIPTION
2
1 (2)
2 (3) NI
3 (4) E/A OUT
4 (5) CLOCK
5 (7) R
6 (8) C
7 (9) RAMP
8 (10) SS
PIN
INV
NAME
T
T
E/A OUT
CLOCK
RAMP
INV
NI
R
C
SS
T
T
FUNCTION
Inverting input to error amp.
Non-inverting input to error amp.
Output of error amplifier and input
to main comparator
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
Normally connected to soft start
capacitor
16-Pin PDIP
16-Pin SOIC
1
2
3
4
5
6
7
8
ML4825
TOP VIEW
(Pin number in parentheses is for PLCC version)
16
15
14
13
12
11
10
9
5.1V REF
V
OUT B
V
PWR GND
OUT A
GND
I
LIM
CC
C
/SD
T
for
9 (12) I
10 (13) GND
11 (14) OUT A
12 (15) PWR GND Return for the high current totem
13 (17) V
14 (18) OUT B
15 (19) V
16 (20) 5.1V REF
PIN
E/A OUT
LIM
NAME
C
CC
CLOCK
/SD
NC
C
R
T
T
4
5
6
7
8
3
9
FUNCTION
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
pole outputs
Positive supply for the high current
totem pole output
High current totem pole output
Positive supply for the IC
Buffered output for the 5.1V voltage
reference
20-Pin PLCC
10 11
2
TOP VIEW
ML4825
1
20 19
12 13
18
17
16
15
14
OUT B
V
NC
PWR GND
OUT A
C