MAX5974A MAXIM [Maxim Integrated Products], MAX5974A Datasheet - Page 5

• Manufacturer Part Number: MAX5974A
• Description: Active-Clamped, Spread-Spectrum, Current-Mode PWM Controllers
• Manufacturer: MAXIM [Maxim Integrated Products]

ELECTRICAL_CHARACTERISTICS_(continued)
(V
V
unless otherwise noted. Typical values are at T
Note_2: All devices are 100% production tested at T
Note_3: See the Output Short-Circuit Protection with Hiccup Mode section.
Note_4: The parameter is measured at the trip point of latch with V
GND
ERROR_AMPLIFIER
FB Reference Voltage
FB Input Bias Current
Voltage Gain
Transconductance
Transconductance Bandwidth
Source Current
Sink Current
FREQUENCY_FOLDBACK_(FFB)
V
Gain
FFB Bias Current
NDRV Switching Frequency
During Foldback
IN
CSAVG
= 12V (for MAX5974A/MAX5974C, bring V
, V
EN
DV
-to-FFB Comparator
PARAMETER
= +2V, NDRV = AUXDRV = SS = COMP = unconnected, R
CSSC
< 0.25V.
Active-Clamped, Spread-Spectrum,
SYMBOL
A
f
SW-FB
V
I
EAMP
BW
I
g
FFB
REF
FB
M
Current-Mode PWM Controllers
A
IN
= +25NC.) (Note 2)
up to 21V for startup), V
V
V
V
Open loop (typical gain
= 1) -3dB frequency
V
V
V
A
FB
COMP
FB
FB
FB
FFB
= +25NC. Limits over temperature are guaranteed by design.
when I
= 0 to 1.75V
= 1V, V
= 1.75V, V
= 0V, V
= 2.5V
COMP
COMP
CS
CONDITIONS
COMP
FB
= 0V (not in FFB mode)
= 0,
= 2.5V
= 0V. Gain is defined as DV
RT
= 1V
CS
= 34.8kI, R
= V
MAX5974A/
MAX5974B
MAX5974C/
MAX5974D
MAX5974A/
MAX5974B
MAX5974C/
MAX5974D
MAX5974A/
MAX5974B
MAX5974C/
MAX5974D
MAX5974A/
MAX5974B
MAX5974C/
MAX5974D
CSSC
DT
= V
= 25kI, C
DITHER/SYNC
1.202
-250
-500
MIN
300
300
1.5
1.8
1.8
26
COMP
IN
= 1FF, T
/DV
= V
1.215
f
TYP
1.52
2.55
2.66
SW
375
375
80
30
10
30
2
CSSC
FB
/2
= V
A
= -40NC to +85NC,
for 0.15V <
1.227
MAX
+250
+100
1.54
FFB
455
455
3.2
3.5
33
= V
DCLMP
UNITS
MHz
kHz
mS
V/V
nA
dB
FA
FA
FA
V
=
5