MAX8815A Maxim Integrated Products, MAX8815A Datasheet - Page 6

• Manufacturer Part Number: MAX8815A
• Description: Step-Up Converter
• Manufacturer: Maxim Integrated Products

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