MAX5094DAUA Maxim Integrated Products, MAX5094DAUA Datasheet - Page 9

• Manufacturer Part Number: MAX5094DAUA
• Description: Current Mode PWM Controllers Single-Ended
• Manufacturer: Maxim Integrated Products

(V
MAX5094_
V
C
OUT SOURCE AND SINK CURRENTS
CC
OUT
High-Performance, Single-Ended, Current-Mode
CC
= 15V
= 10nF
= 15V, T
PIN
1
2
3
4
5
6
7
8
t = 400ns/div
A
= +25°C, unless otherwise noted.)
NAME
COMP
R
GND
OUT
V
REF
_______________________________________________________________________________________
CS
T
FB
CC
/C
T
MAX5094/95 toc20
Error-Amplifier Output. COMP can be used for soft-start.
Error-Amplifier Inverting Input
PWM Comparator and Overcurrent Protection Comparator Input. The current-sense signal is
compared to a signal proportional to the error-amplifier output voltage.
Timing Resistor/Capacitor Connection. A resistor R
to GND set the oscillator frequency.
Power-Supply Ground. Place the V
loops.
MOSFET Driver Output. OUT connects to the gate of the external n-channel MOSFET.
Power-Supply Input. Bypass V
a 0.1µF and a higher value ceramic capacitor.
5V Reference Output. Bypass REF to GND with a 0.1µF ceramic capacitor or a parallel combination
of a 0.1µF and a higher value ceramic capacitor no larger then 4.7µF.
V
10V/div
I
4A/div
OUT
OUT
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
Typical Operating Characteristics (continued)
20
MAX5095C
C
120
T
= 100pF
vs. OSCILLATOR FREQUENCY
220 320 420
T
A
SUPPLY CURRENT
= +125 C
FREQUENCY (kHz)
CC
to GND with a 0.1µF ceramic capacitor or a parallel combination of
520 620 720
CC
and REF bypass capacitors close to the IC to minimize ground
T
A
= -40 C
820
FUNCTION
920
1020
T
from R
PWM Controllers
T
/C
100
T
90
80
70
60
50
40
30
20
to REF and capacitor C
100
vs. R
Pin Descriptions
MAXIMUM DUTY CYCLE
T
1000
MAX5094A/MAX5095A
R
T
( )
10,000
T
C
from R
T
C
C
T
= 220pF
C
T
T
= 1000pF
= 560pF
= 100nF
T
/C
100,000
T
9