MAX1543ETP+T Maxim Integrated Products, MAX1543ETP+T Datasheet - Page 6

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

Specifications of MAX1543ETP+T

• 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
6
(V
IN
_______________________________________________________________________________________
= 3.3V, V
95
90
85
80
75
70
65
50
0.7
0.6
0.5
0.4
0.3
0.2
0.1
60
55
0
2.5
STEP-UP REGULATOR SUPPLY CURRENT
1
NO LOAD
f
R
R
SUP DISCONNECTED
OSC
MAX1543
f
L = 4.7µH
1
2
OSC
STEP-UP REGULATOR EFFICIENCY
= 75kΩ
= 13.7kΩ
vs. LOAD CURRENT (V
= 1.2MHz
3.0
= 1.2MHz
MAIN
1.75
1.50
1.25
1.00
0.75
vs. SUPPLY VOLTAGE
CURRENT INTO INDUCTOR
LOAD CURRENT (mA)
3.5
= 8V, f
10
4.5
V
NO LOAD
BUFFER CONFIGURATION
POS_ = V
IN
V
CURRENT INTO IN PIN
= 5V
IN
4.0
6.0
(V)
OSC
SUP SUPPLY CURRENT
SUP
V
IN
vs. SUP VOLTAGE
4.5
100
/2
7.5
MAIN
= 1.2MHz, T
V
= 3.3V
IN
= 2.7V
V
= 8V)
SUP
5.0
9.0
(V)
1000
5.5
10.5
A
= +25°C, unless otherwise noted.)
12.0
95
90
85
80
75
70
65
50
60
55
2.0
1.6
1.2
0.8
0.4
13.5
0
-40
STEP-UP REGULATOR SUPPLY CURRENT
1
NO LOAD
V
f
R
R
SUP DISCONNECTED
MAX1543
f
L = 10µH
OSC
OSC
STEP-UP REGULATOR EFFICIENCY
IN
1
2
V
vs. LOAD CURRENT (V
IN
= 75kΩ
= 13.7kΩ
= 3.3V
= 1.2MHz
= 640kHz
= 5V
-15
vs. TEMPERATURE
CURRENT INTO IN PIN
LOAD CURRENT (mA)
CURRENT INTO INDUCTOR
TEMPERATURE (°C)
10
10
Typical Operating Characteristics
V
35
IN
= 3.3V
100
V
MAIN
V
IN
IN
= 2.7V
= 5V
60
= 8V)
2.0
1.6
1.2
0.8
-40
1000
85
V
V
V
SUP
SUP
SUP
-15
= 13V
= 8V
= 5V
SUP SUPPLY CURRENT
vs. TEMPERATURE
1400
1200
1000
TEMPERATURE (°C)
800
600
400
8.1
8.0
7.9
7.8
7.7
7.6
7.5
10
2.5
STEP-UP REGULATOR OUTPUT VOLTAGE
1
NO LOAD
BUFFER CONFIGURATION
V
V
f
POS
MAX1543
I
OSC
MAIN
IN
vs. LOAD CURRENT (V
= 3.3V
= V
35
= 1.2MHz
3.0
= 200mA
SWITCHING FREQUENCY
SUP
vs. INPUT VOLTAGE
/2
LOAD CURRENT (mA)
3.5
10
60
FREQ = IN
FREQ = AGND
V
IN
4.0
(V)
85
100
4.5
MAIN
= 8V)
5.0
1000
5.5