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