MAX608 Maxim, MAX608 Datasheet - Page 4

• Manufacturer Part Number: MAX608
• Description: 5V or Adjustable / Low-Voltage / Step-Up DC-DC Controller
• Manufacturer: Maxim

5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller
(T
4
15.5
____________________________Typical Operating Characteristics (continued)
16.5
16.0
A
250
200
150
100
50
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
0
EXT RISE/FALL TIME vs. SUPPLY VOLTAGE
-60 -30
2
MAXIMUM SWITCH ON-TIME vs.
4
A
B
C
SUPPLY VOLTAGE (V)
0
TEMPERATURE (°C)
TEMPERATURE
V
A = EXT VOLTAGE, 5V/div
B = INDUCTOR CURRENT, 1A/div
C = V
IN
6
HEAVY-LOAD SWITCHING WAVEFORMS
30
= 3V, I
C
C
C
C
OUT
EXT
EXT
EXT
EXT
RIPPLE, 50mV/div, AC-COUPLED
OUT
60
= 2200pF
= 1000pF
= 470pF
= 100pF
8
= 930mA, V
90
(V
10
120 150
OUT
2 s/div
OUT
= 5V)
= 5V
12
250
200
150
100
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
50
0
0
-60
-60
SHUTDOWN CURRENT vs. TEMPERATURE
REFERENCE OUTPUT RESISTANCE vs.
-40
-40
I
0A
V
0V
LIM
OUT
V+ = 4V
-20
-20
TEMPERATURE ( C)
TEMPERATURE ( C)
V+ = 8V
0
0
TEMPERATURE
20
20
50µA
40
40
60
60
10µA
V+ = 15V
80
80
C
A
B
100
100
V
A = EXT VOLTAGE, 5V/div
B = INDUCTOR CURRENT, 1A/div
C = V
100µA
IN
MEDIUM-LOAD SWITCHING WAVEFORMS
120
120
= 3V, I
OUT
140
140
RIPPLE, 50mV/div, AC-COUPLED
OUT
= 490mA, V
1.506
1.504
1.502
1.500
1.498
1.496
1.494
1.492
(V
2.20
2.30
2.25
OUT
20 s/div
OUT
-60 -30
-60
= 5V)
= 5V
MINIMUM SWITCH OFF-TIME vs.
-40
REFERENCE vs. TEMPERATURE
-20
0
TEMPERATURE (°C)
TEMPERATURE ( C)
0
TEMPERATURE
20
30
40
60
60
V
0V
I
0A
LIM
OUT
80
90
100
120 150
120
140