Typical operating characteristics (continued) – Rainbow Electronics MAX1760 User Manual
Page 5
MAX1760
0.8A, Low-Noise, 1MHz,
Step-Up DC-DC Converter
_______________________________________________________________________________________
5
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
MAX1760-04
0.0
0.5
1.5
1.0
2.0
2.5
0
2
1
3
4
5
INPUT VOLTAGE (V)
INPUT CURRENT (mA)
V
OUT
= 3.3V
V
OUT
= 5V
TOTAL SHUTDOWN CURRENT
(I
LX
+ I
OUT
) vs. INPUT VOLTAGE
MAX1760-05
0.1
0
2
1
4
6
1
10
INPUT VOLTAGE (V)
SHUTDOWN CURRENT (nA)
3
5
INTERNAL OSCILLATOR
FREQUENCY vs. TEMPERATURE
MAX1760-06
0.75
0.85
0.80
1.00
0.95
0.90
1.15
1.10
1.05
1.20
-40
10
-15
35
60
85
TEMPERATURE (
°C)
FREQUENCY (MHz)
STARTUP VOLTAGE
vs. OUTPUT CURRENT
MAX1760-07
0.001
0.01
0.1
1
OUTPUT CURRENT (A)
STARTUP VOLTAGE (V)
3.0
0.0
0.5
1.0
1.5
2.0
2.5
CIRCUIT OF FIGURE 6
C
A
B
B = +25
°C
C = -40
°C
A = +85
°C
PEAK INDUCTOR CURRENT vs. V
ISET
MAX1760-08
0.0
0.4
0.2
0.8
0.6
1.2
1.0
1.4
0.1
0.5
0.7
0.3
0.9
1.1
1.3
V
ISET
(V)
PEAK INDUCTOR CURRENT (A)
HEAVY-LOAD SWITCHING WAVEFORMS
MAX1760-09
C
0V
A
B
A = LX PIN, 5V/div
B = INDUCTOR CURRENT, 200mA/div
C = OUTPUT RIPPLE, 50mV/div AC-COUPLED
t = 400ns/div
LIGHT-LOAD SWITCHING WAVEFORMS
MAX1760-10
C
t = 400ns/div
A
B
A = LX PIN, 5V/div
B = INDUCTOR CURRENT, 200mA/div
C = OUTPUT RIPPLE, 50mV/div, AC-COUPLED
LOAD-TRANSIENT RESPONSE
MAX1760-11
t = 200ms/div
A
B
V
IN
= 1.1V, V
OUT
= 3.3V, I
OUT
= 0 AND 0.2A
A = I
OUT
, 100mA/div
B = V
OUT
, 50mV/div, AC-COUPLED
LINE-TRANSIENT RESPONSE
MAX1760-12
400
µs/div
A
B
V
IN
=
2.4V TO 1.4V, I
OUT
=
70mA
A = V
IN
, 1V/div
B = V
OUT
, 5mA/div, AC-COUPLED
Typical Operating Characteristics (continued)
(Circuit of Figure 2, V
IN
= 2.4V, V
OUT
= 3.3V, T
A
= +25°C, unless otherwise noted.)