Typical operating characteristics (continued) – Rainbow Electronics MAX608 User Manual
Page 4
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller
4
_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
0
100
150
200
250
50
2
4
6
8
10
12
EXT RISE/FALL TIME vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
EXT RISE/FALL TIME (ns)
C
EXT
= 2200pF
C
EXT
= 1000pF
C
EXT
= 470pF
C
EXT
= 100pF
MAX608-07
250
0
-60
-20
60
140
REFERENCE OUTPUT RESISTANCE vs.
TEMPERATURE
50
MAX608-08
TEMPERATURE (
°
C)
REFERENCE OUTPUT RESISTANCE (
Ω
)
20
100
150
-40
0
80
40
120
100
200
100µA
50µA
10µA
1.502
-60
-20
60
140
REFERENCE vs. TEMPERATURE
MAX608-09
TEMPERATURE (
°
C)
REFERENCE (V)
20
100
-40
0
80
40
120
1.500
1.498
1.496
1.494
1.492
1.504
1.506
V
IN
= 3V, I
OUT
= 490mA, V
OUT
= 5V
A = EXT VOLTAGE, 5V/div
B = INDUCTOR CURRENT, 1A/div
C = V
OUT
RIPPLE, 50mV/div, AC-COUPLED
MEDIUM-LOAD SWITCHING WAVEFORMS
(V
OUT
= 5V)
A
B
C
V
OUT
0V
I
LIM
0A
20
µ
s/div
4.0
-60
-20
60
140
SHUTDOWN CURRENT vs. TEMPERATURE
MAX608-11
TEMPERATURE (
°
C)
SHUTDOWN CURRENT (µA)
20
100
-40
0
80
40
120
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V+ = 15V
V+ = 4V
V+ = 8V
2.20
2.25
2.30
-60 -30
0
30
60
90
120
150
MINIMUM SWITCH OFF-TIME vs.
TEMPERATURE
TEMPERATURE (°C)
t OFF(min) (µs)
MAX608-12
15.5
16.0
16.5
-60 -30
0
30
60
90
120
150
MAXIMUM SWITCH ON-TIME vs.
TEMPERATURE
TEMPERATURE (°C)
t ON(max) (µs)
MAX608-10
V
IN
= 3V, I
OUT
= 930mA, V
OUT
= 5V
A = EXT VOLTAGE, 5V/div
B = INDUCTOR CURRENT, 1A/div
C = V
OUT
RIPPLE, 50mV/div, AC-COUPLED
HEAVY-LOAD SWITCHING WAVEFORMS
(V
OUT
= 5V)
A
B
C
V
OUT
0V
I
LIM
0A
2
µ
s/div