參數資料
型號: ML4823IS
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: High Frequency Power Supply Controller
中文描述: 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝: SOIC-16
文件頁數: 2/9頁
文件大?。?/td> 121K
代理商: ML4823IS
ML4823
2
REV. 1.0 10/12/2000
PIN CONFIGURATION
PIN
NAME
FUNCTION
PIN
NAME
FUNCTION
1 (2)
INV
Inverting input to error amp.
2 (3)
NI
Non-inverting input to error amp.
3 (4)
E/A OUT
Output of error amplifier and input to
main comparator.
4 (5)
CLOCK
Oscillator output.
Timing resistor for oscillator — sets
charging current for oscillator timing
capacitor (pin 6).
5 (7)
R
T
6 (8)
C
T
RAMP
Timing capacitor for oscillator.
7 (9)
Non-inverting input to main
comparator. Connected to C
T
for
Voltage mode operation or to current
sense resistor for current mode.
8 (10)
SS
Normally connected to soft start
capacitor.
PIN DESCRIPTION
(Pin Numbers in Parentheses are for PLCC Version)
9
(12) I
LIM
/S.D.
Current limit sense pin. Normally
connected to current sense resistor.
10 (13) GND
Analog signal ground.
11 (14) I
LIM
REF
Reference input for cycle-by-cycle
current limit comparator.
12 (15) PWR GND Return for the high current totem
pole output.
13 (17) V
C
Positive supply for the high current
totem pole output.
14 (18) OUT B
High current totem pole output.
15 (19) V
CC
16 (20) 5.1V REF
Positive supply for the IC.
Buffered output for the 5.1V voltage
reference.
INV
NI
E/A OUT
CLOCK
R
T
C
T
RAMP
SS
5.1V REF
V
CC
OUTPUT
V
C
PWR GND
I
LIM
REF
GND
I
LIM
/S.D.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TOP VIEW
3
2
1
20
19
18
17
16
15
14
9
10
11
12
13
4
5
6
7
8
R
S
N
I
L
/
G
N
I
N
5
V
C
OUTPUT
V
C
NC
PWR GND
I
LIM
REF
E/A OUT
CLOCK
NC
R
T
C
T
TOP VIEW
ML4823
16-PIN DIP (P16)
16-PIN SOIC (S16W)
ML4823
20-PIN PLCC (Q20)
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