MAX5068 データシートの表示（PDF） - Maxim Integrated
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MAX5068
Maxim Integrated
MAX5068 Datasheet PDF : 20 Pages
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High-Frequency, Current-Mode PWM Controller
with Accurate Programmable Oscillator
Typical Operating Characteristics (continued)
(VIN = +12V for the MAX5068B/E/F; VIN = +23.6V for MAX5068A/C/D at startup, then reduces to +12V; CIN = CREG5 = 0.1µF;
CVCC = 1µF; RRT = 100kΩ; NDRV = floating; VFB = 0; VCOMP = floating; VCS = 0; TA = +25°C, unless otherwise noted.)
FLTINT CURRENT vs. TEMPERATURE
63.0
62.9
62.8
62.7
62.6
62.5
62.4
62.3
62.2
62.1
62.0
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
NDRV SWITCHING FREQUENCY
vs. TEMPERATURE
52.0
51.6 fSW = 50kHz
51.2
50.8
50.4
50.0
49.6
49.2
48.8
48.4
48.0
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
HYST RON vs. TEMPERATURE
13.0
12.5
VIN = 24V
SINKING 50mA
12.0
11.5
11.0
10.5
10.0
9.5
9.0
8.5
8.0
-40 -15 10 35 60 85 110
TEMPERATURE (°C)
NDRV SWITCHING FREQUENCY
vs. TEMPERATURE
505
504 fSW = 500kHz
503
502
501
500
499
498
497
496
495
-50 -25
0 25 50 75 100 125
TEMPERATURE (°C)
NDRV SWITCHING FREQUENCY (fSW)
vs. RRT
2
1
MAX5068A/B
0.1
MAX5068C/D/E/F
0.01
0.03
0.1
RRT (MΩ)
12
NDRV SWITCHING FREQUENCY
vs. TEMPERATURE
1.40
MAX5068A/B
fSW = 1.25MHz
1.35
1.30
1.25
1.20
1.15
1.10
-40 -15
10 35 60 85 110
TEMPERATURE (°C)
DEAD TIME vs. TEMPERATURE
70
VIN = 24V
RDT = 24.9kΩ
65 RRT = 100kΩ
60
55
50
45
40
-40 -15
10 35 60 85 110
TEMPERATURE (°C)
200
180
160
140
120
100
80
60
40
20
0
1
DEAD TIME vs. RDT
10
100
RDT (kΩ)
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