Typical operating characteristics (continued) – Rainbow Electronics MAX8625A User Manual
Page 7
MAX8625A
High-Efficiency, Seamless Transition,
Step-Up/Down DC-DC Converter
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(V
IN
= 3.6V, SKIP = GND, T
A
= +25°C, Figure 4, unless otherwise noted.)
2.28
2.34
2.32
2.30
2.36
2.38
2.40
2.42
2.44
2.46
2.48
-50
0
-25
25
50
75
100
MINIMUM STARTUP VOLTAGE
vs. TEMPERATURE
MAX8625A toc22
TEMPERATURE (
°C)
MINIMUM STARTUP VOLTAGE (V)
V
OUT
= 3.3V, NO LOAD
1.22
1.24
1.23
1.26
1.25
1.27
1.28
-40
20
40
-20
0
60
80
100
REFERENCE vs. TEMPERATURE
NO LOAD
MAX8625A toc23
TEMPERATURE (
°C)
REFERENCE (V)
V
OUT
= 3.3V
V
IN
= 3.0V,
3.6V,
4.2V,
5.0V
1.22
1.24
1.23
1.26
1.25
1.27
1.28
-40
20
40
-20
0
60
80
100
REFERENCE vs. TEMPERATURE
WITH 300mA LOAD
MAX8625A toc24
TEMPERATURE (
°C)
REFERENCE (V)
V
OUT
= 3.3V
V
IN
= 3.0V,
3.6V,
4.2V,
5.0V
100
μs/div
SHUTDOWN DUE TO OVERLOAD
V
IN
= 3.6V, V
OUT
= 3.288V
MAX8625A toc25
V
LX2
2V/div
V
LX2
2V/div
V
OUT
500mV/div
I
LX
500mA/div
2
μs/div
BOOST-TO-BUCK TRANSITION
FPWM MODE V
IN
= 3.6V, V
OUT
= 3.288V
MAX8625A toc26
V
IN
1V/div
DC OFFSET = 3V
V
OUT
100mV/div
AC-COUPLED
I
LX
200mA/div