ML4823
PIN CONFIGURATION
ML4823
16-PIN DIP (P16)
16-PIN SOIC (S16W)
INV
NI
E/A OUT
CLOCK
R
T
C
T
RAMP
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ML4823
20-PIN PLCC (Q20)
5.1V REF
20
V
CC
19
18
17
16
15
14
9
RAMP
10
SS
11
NC
12
I
LIM
/S.D.
13
GND
OUTPUT
V
C
NC
PWR GND
I
LIM
REF
INV
2
5.1V REF
V
CC
OUTPUT
V
C
PWR GND
I
LIM
REF
GND
I
LIM
/S.D.
CLOCK
NC
R
T
C
T
5
6
7
8
E/A OUT
4
3
TOP VIEW
TOP VIEW
PIN DESCRIPTION
(Pin Numbers in Parentheses are for PLCC Version)
PIN
NAME
FUNCTION
PIN
NAME
FUNCTION
1 (2)
2 (3)
3 (4)
4 (5)
5 (7)
INV
NI
Inverting input to error amp.
Non-inverting input to error amp.
9 (12) I
LIM
/S.D.
10 (13) GND
11 (14) I
LIM
REF
Current limit sense pin. Normally
connected to current sense resistor.
Analog signal ground.
Reference input for cycle-by-cycle
current limit comparator.
E/A OUT Output of error amplifier and input to
main comparator.
CLOCK
R
T
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
T
for
Voltage mode operation or to current
sense resistor for current mode.
Normally connected to soft start
capacitor.
12 (15) PWR GND Return for the high current totem
pole output.
13 (17) V
C
14 (18) OUT B
15 (19) V
CC
16 (20) 5.1V REF
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.
6 (8)
7 (9)
C
T
RAMP
8 (10)
SS
2
NC
1
NI
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
