MAX5095A View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX5095A Datasheet PDF : 22 Pages
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High-Performance, Single-Ended, Current-Mode
PWM Controllers
Typical Operating Characteristics (continued)
(VCC = 15V, TA = +25°C, unless otherwise noted.)
OUT SOURCE AND SINK CURRENTS
MAX5094/95 toc20
VCC = 15V
COUT = 10nF
VOUT
10V/div
t = 400ns/div
IOUT
4A/div
SUPPLY CURRENT
vs. OSCILLATOR FREQUENCY
7.0
6.5 MAX5095C
CT = 100pF
6.0
5.5
5.0
TA = +125°C
4.5
TA = -40°C
4.0
3.5
3.0
2.5
2.0
20 120 220 320 420 520 620 720 820 920 1020
FREQUENCY (kHz)
MAXIMUM DUTY CYCLE
vs. RT MAX5094A/MAX5095A
100
90
80
CT = 1000pF
CT = 560pF
70
60
CT = 220pF
50
40
CT = 100nF
30
20
100
1000
10,000
RT (Ω)
100,000
MAX5094_
PIN
NAME
1
COMP
2
FB
3
CS
4
RT/CT
5
GND
6
OUT
7
VCC
8
REF
Pin Descriptions
FUNCTION
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 RT from RT/CT to REF and capacitor CT from RT/CT
to GND set the oscillator frequency.
Power-Supply Ground. Place the VCC and REF bypass capacitors close to the IC to minimize ground
loops.
MOSFET Driver Output. OUT connects to the gate of the external n-channel MOSFET.
Power-Supply Input. Bypass VCC to GND with a 0.1µF ceramic capacitor or a parallel combination of
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.
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