Rainbow Electronics MAX8727 - Manual (Page 5)

MAX8727
TFT-LCD Step-Up DC-DC Converter
_______________________________________________________________________________________ 5
SOFT-START
(R
LOAD
= 30 Ω)
MAX8727 toc07
1ms/div
OA
INDUCTOR
CURRENT
1A/div
OV
V OUT
5V/div
LOAD-TRANSIENT RESPONSE
(I
LOAD
= 50mA TO 550mA)
MAX8727 toc08
1 µs/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
1 µs/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
1 µs/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.)