MAX1543ETP+ Maxim Integrated Products, MAX1543ETP+ Datasheet - Page 8

• Manufacturer Part Number: MAX1543ETP+
• Description: IC DC-DC CONV TFT-LCD 20-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1543ETP+

• Applications: Controller, TFT, LCD
• Voltage - Input: 2.6 ~ 5.5 V
• Number Of Outputs: 2
• Voltage - Output: 2.6 ~ 13 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TFT LCD DC-to-DC Converter with
Operational Amplifiers
8
(V
IN
_______________________________________________________________________________________
= 3.3V, V
SOFT-START WAVEFORMS
AC-COUPLED
HEAVY-LOAD
500mA/div
100mV/div
MAIN
2ms/div
1A/div
V
I
MAIN
MAIN
+50
-50
I
L
4V
0
= 8V, f
PULSED LOAD-TRANSIENT RESPONSE
R
LOAD
LOAD-TRANSIENT RESPONSE
OSC
MAX1542 toc18
OPERATIONAL AMPLIFIER
STEP-UP REGULATOR
= 10Ω
= 1.2MHz, T
10µs/div
1µs/div
V
5V/div
V
5V/div
I
500mA/div
L
IN
MAIN
BUFFER CONFIGURATION
L = 4.7µH
R
C
COMP
COMP
A
= +25°C, unless otherwise noted.)
= 120kΩ
= 470pF
MAX1542 toc16
MAX1542 toc21
Typical Operating Characteristics (continued)
RESPONSE TO OVERLOAD
TIMER DELAY LATCH
V
1V/div
AC-COUPLED
I
50mA/div
OUT1
OUT1
10ms/div
MAX1542 toc19
4V
V
5V/div
I
2A/div
V
5V/div
V
20V/div
L
MAIN
OUT1
COM
LARGE-SIGNAL STEP RESPONSE
OPERATIONAL AMPLIFIER
STARTUP SEQUENCE
V
BUFFER CONFIGURATION
V
A
SUP
1µs/div
1ms/div
RAIL-TO-RAIL I/O PERFORMANCE
SUP
V
= 10
= 8V
OPERATIONAL AMPLIFIER
= 8V
100µs/div
MAX1542 toc22
MAX1542 toc17
V
500mV/div
AC-COUPLED
V
2V/div
V
2V/div
V
8V/div
V
5V/div
V
10V/div
POS1
OUT1
IN
MAIN
GOFF
COM
MAX1542 toc20
V
5V/div
V
5V/div
POS1
OUT1