Rainbow Electronics MAX5071 - Manual (Page 8)

MAX5070/MAX5071
High-Performance, Single-Ended, Current-Mode
PWM Controllers
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= 15V, T
A
= +25°C, unless otherwise noted.)
TIMING RESISTANCE (R T )
vs. OSCILLATOR FREQUENCY
MAX5070 toc12
FREQUENCY (Hz)
R
T
RESISTANCE (k
Ω
)
1M 100k
1
10
100
1000
0.1
10k 10M
C T = 10nF
C T = 4.7nF
C T = 3.3nF
C
T
= 2.2nF
C T = 1nF
C T = 560pF
C T = 220pF
C T = 100pF
OUT IMPEDANCE vs. TEMPERATURE
(R DS_ON PMOS DRIVER)
MAX5070 toc13
TEMPERATURE (°C)
R
DS_ON
(Ω
)
110 95 65 80 -10 5 20 35 50 -25
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
2.0
-40 125
I SOURCE = 100mA
OUT IMPEDANCE vs. TEMPERATURE
(R DS_ON NMOS DRIVER)
MAX5070 toc14
TEMPERATURE (°C)
R
DS_ON
(Ω
)
110 95 65 80 -10 5 20 35 50 -25
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
3.0
-40 125
I SINK = 200mA
PROPAGATION DELAY FROM CURRENT-LIMIT
COMPARATOR TO OUT vs. TEMPERATURE
MAX5070 toc15
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
110 95 65 80 -10 5 20 35 50 -25 -40 125
10
20
30
40
50
60
70
80
90
100
0
ERROR-AMPLIFIER OPEN-LOOP GAIN
AND PHASE vs. FREQUENCY
MAX5070 toc16
FREQUENCY (Hz)
GAIN (dB)
1M 100k 1k 10k 10 100 1
0
20
40
60
80
100
120
140
-20
0.01 100M 10M
-165
-140
-115
-90
-65
-40
-15
10
-190
PHASE
GAIN
PHASE (DEGREES)
COMP VOLTAGE LEVEL TO TURN OFF DEVICE
vs. TEMPERATURE
MAX5070 toc17
TEMPERATURE (°C)
V
COMP
(V)
110 95 65 80 -10 5 20 35 50 -25 -40 125
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
1.5
10V < V CC < 18V
ADV_CLK RISING EDGE TO OUT RISING EDGE
PROPAGATION DELAY vs. TEMPERATURE
MAX5070 toc18
TEMPERATURE (°C)
PROPAGATION DELAY (ns)
110 95 65 80 -10 5 20 35 50 -25
92
94
96
98
100
102
104
106
108
110
112
114
90
-40 125
MAX5071C
ADV_CLK AND OUT WAVEFORMS
MAX5070 toc19
V CC = 15V
MAX5071C
OUT
10V/div
10kΩ LOAD
ADV_CLK
5V/div
20ns/div