MAX1760EUB-T Maxim Integrated Products, MAX1760EUB-T Datasheet - Page 5

• Manufacturer Part Number: MAX1760EUB-T
• Description: DC/DC Switching Converters 0.8A Low-Noise 1MHz Step-Up
• Manufacturer: Maxim Integrated Products

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