Typical operating characteristics (continued) – Rainbow Electronics MAX8815A User Manual
Page 6
MAX8815A
1A, 97% Efficiency, 30µA Quiescent Current
Step-Up Converter with True Shutdown
6
_______________________________________________________________________________________
200ns/div
HEAVY-LOAD SWITCHING
WAVEFORMS
50mV/div
AC-COUPLED
V
OUT
V
LX
I
LX
MAX8815A toc14
0A
5V/div
0V
1A/div
I
OUT
= 500mA
2
μs/div
LIGHT-LOAD SWITCHING
WAVEFORMS (SKIPB = LOW)
20mV/div
AC-COUPLED
V
OUT
V
LX
I
LX
MAX8815A toc15
0A
2V/div
0V
500mA/div
I
OUT
= 10mA
200ns/div
LIGHT-LOAD SWITCHING
WAVEFORMS (SKIPB = HIGH)
20mV/div
AC-COUPLED
V
OUT
V
LX
I
LX
MAX8815A toc16
0A
2V/div
0V
500mA/div
I
OUT
= 10mA
100
μs/div
LINE TRANSIENT
20mV/div
AC-COUPLED
V
IN
V
OUT
MAX8815A toc17
2V/div
0V
3V
4.2V
3V
1ms/div
LOAD TRANSIENT
V
OUT
200mV/div
5V DC OFFSET
500mV/div
MAX8815A toc18
I
OUT
800mA
10mA
0A
200
μs/div
STARTUP WAVEFORM
(NO LOAD)
V
EN
V
OUT
V
LX
I
LX
MAX8815A toc19
5V/div
5V/div
0V
5V/div
0V
1A/div
0A
Typical Operating Characteristics (continued)
(V
OUTS
= V
POUT
= 5V, V
BATT
= V
ON
= 3.6V, V
SKIPB
= GND.)