
MAX8727
TFT-LCD Step-Up DC-DC Converter
_______________________________________________________________________________________ 5
SOFT-START
(R
LOAD
= 30Ω)
MAX8727 toc07
1ms/div
OA
INDUCTOR
CURRENT
1A/div
OV
V
OUT
5V/div
LOAD-TRANSIENT RESPONSE
(I
LOAD
= 50mA TO 550mA)
MAX8727 toc08
1µs/div
OA
INDUCTOR
CURRENT
1A/div
50mA
15V
V
OUT
5mV/div
AC-COUPLED
I
OUT
500mA/div
PULSED LOAD-TRANSIENT RESPONSE
(I
LOAD
= 100mA TO 1.1A)
MAX8727 toc09
1µs/div
OA
INDUCTOR
CURRENT
1A/div
0.1A
15V
V
OUT
5mV/div
AC-COUPLED
I
OUT
1A/div
SWITCHING WAVEFORMS
(I
LOAD
= 600mA)
MAX8727 toc10
1µs/div
OA
INDUCTOR
CURRENT
1A/div
OV
LX
10V/div
Typical Operating Characteristics (continued)
(Circuit of Figure 1. V
IN
= 5V, V
MAIN
= 15V, T
A
= +25°C unless otherwise noted.)
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