MAX5068 Maxim Integrated Products, MAX5068 Datasheet - Page 7

• Manufacturer Part Number: MAX5068
• Description: Current-Mode PWM Controller
• Manufacturer: Maxim Integrated Products

(V
C
VCC
IN
63.0
62.9
62.8
62.7
62.6
62.5
62.4
62.3
62.2
62.1
62.0
52.0
51.6
51.2
50.8
50.4
50.0
49.6
49.2
48.8
48.4
48.0
High-Frequency, Current-Mode PWM Controller
= +12V for the MAX5068B/E/F; V
= 1µF; R
-40
-40
FLTINT CURRENT vs. TEMPERATURE
f
SW
NDRV SWITCHING FREQUENCY
= 50kHz
-15
-15
RT
70
65
60
55
50
45
40
vs. TEMPERATURE
= 100kΩ; NDRV = floating; V
10
10
TEMPERATURE (°C)
TEMPERATURE (°C)
-40
V
R
R
_______________________________________________________________________________________
IN
DT
RT
35
35
with Accurate Programmable Oscillator
= 24V
DEAD TIME vs. TEMPERATURE
= 100kΩ
-15
= 24.9kΩ
60
60
10
TEMPERATURE (°C)
85
85
35
110
110
60
IN
= +23.6V for MAX5068A/C/D at startup, then reduces to +12V; C
85
FB
= 0; V
110
Typical Operating Characteristics (continued)
13.0
12.5
12.0
11.5
11.0
10.5
10.0
505
503
502
501
500
499
498
497
496
495
504
9.5
9.0
8.5
8.0
-40
-50
COMP
f
V
SINKING 50mA
SW
IN
= 24V
NDRV SWITCHING FREQUENCY
= 500kHz
-25
-15
HYST R
= floating; V
vs. TEMPERATURE
0
10
TEMPERATURE (°C)
TEMPERATURE (°C)
ON
vs. TEMPERATURE
25
35
CS
50
60
= 0; T
75
85
A
100
= +25°C, unless otherwise noted.)
110
200
180
160
140
120
100
80
60
40
20
0
125
1
0.01
1.35
1.20
1.15
1.40
1.30
1.25
1.10
0.1
DEAD TIME vs. R
2
1
0.03
-40
MAX5068A/B
f
NDRV SWITCHING FREQUENCY (f
SW
R
DT
MAX5068C/D/E/F
NDRV SWITCHING FREQUENCY
= 1.25MHz
-15
10
(kΩ)
0.1
vs. TEMPERATURE
10
TEMPERATURE (°C)
DT
R
vs. R
IN
RT
35
(MΩ)
= C
MAX5068A/B
RT
60
REG5
100
85
= 0.1µF;
1
SW
110
)
2
7