max5974 Maxim Integrated Products, Inc., max5974 Datasheet - Page 8

• Manufacturer Part Number: max5974
• Description: Active-clamped, Spread-spectrum, Current-mode Pwm Controllers
• Manufacturer: Maxim Integrated Products, Inc.

(V
V
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
8
GND
IN
-100
-101
-102
-103
-104
-105
-106
-107
3.40
3.39
3.38
3.37
3.36
3.35
3.34
3.33
3.32
3.31
3.30
400
350
300
250
200
150
100
-97
-98
-99
= 12V (for MAX5974A/MAX5974C, bring V
50
, V
0
-40
-40
10
EN
REVERSE CURRENT-LIMIT THRESHOLD
20
= 2V, NDRV = AUXDRV = SS = COMP = unconnected, R
DEAD TIME vs. R
-15
-15
30
CURRENT-SENSE GAIN
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
TEMPERATURE (°C)
40
R
DT
10
10
50
VALUE (kΩ)
60
35
35
DT
70
VALUE
80
60
60
90
100
85
85
1.220
1.219
1.218
1.217
1.216
1.215
1.214
1.213
1.212
1.211
1.210
IN
54.0
53.5
53.0
52.5
52.0
51.5
51.0
50.5
50.0
Typical Operating Characteristics (continued)
102
100
98
96
94
92
90
88
up to 21V for startup), V
-40
-40
-40
MAX5974C/MAX5974D
SLOPE COMPENSATION CURRENT
DEAD TIME vs. TEMPERATURE
-15
-15
-15
FEEDBACK VOLTAGE
vs. TEMPERATURE
vs. TEMPERATURE
10
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
10
10
35
RT
35
= 34.8kI, R
60
35
CS
85
= V
60
60
110
CSSC
DT
85
85
= 25kI, unless otherwise noted. )
= V
DITHER/SYNC
1.522
1.521
1.520
1.519
1.518
1.517
1.516
398
397
396
395
394
393
392
391
390
389
388
170
165
160
155
150
145
140
-40
-40
-40
PEAK CURRENT-LIMIT THRESHOLD
-15
-15
NDRV MINIMUM ON-TIME
-15
= V
FEEDBACK VOLTAGE
vs. TEMPERATURE
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
FB
10
10
10
= V
FFB
35
35
35
= V
60
60
60
DCLMP
85
85
85
=