MAX1543ETP+ Maxim Integrated Products, MAX1543ETP+ Datasheet - Page 2

• 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

ABSOLUTE MAXIMUM RATINGS
IN, CTL, COMP, FB, DEL, FREQ (MAX1543)
COMP, FB, DEL to AGND .............................-0.3V to (IN + 0.3V)
PGND to AGND ..................................................................±0.3V
LX to PGND ............................................................-0.3V to +14V
SUP, POS1, NEG1, OUT1, POS2,
POS1, NEG1, OUT1, POS2, NEG2,
SRC, COM to AGND...............................................-0.3V to +30V
SRC to COM ...........................................................-0.3V to +30V
SRC to DRN (MAX1543).........................................-0.3V to +30V
COM to AGND ...........................................-0.3V to (SRC + 0.3V)
ELECTRICAL CHARACTERISTICS
(V
unless otherwise noted.)
TFT LCD DC-to-DC Converter with
Operational Amplifiers
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
IN Supply Range
IN Undervoltage Lockout
Threshold
IN Quiescent Current
Duration to Trigger Fault
Condition
Thermal Shutdown
MAIN STEP-UP REGULATOR
Output Voltage Range
Operating Frequency
Oscillator Maximum Duty Cycle
FREQ Input Low Voltage
FREQ Input High Voltage
FREQ Pulldown Current
FB Regulation Voltage
FB Fault Trip Level
FB Load Regulation
FB Line Regulation
IN
to AGND ...............................................................-0.3V to +6V
NEG2, OUT2 to AGND .......................................-0.3V to +14V
OUT2 to AGND ......................................-0.3V to (SUP + 0.3V)
_______________________________________________________________________________________
= 3V, V
PARAMETER
SUP
= 8V, V
SRC
= 28V, FREQ = IN (MAX1543), PGND = AGND = 0, T
SYMBOL
V
V
f
UVLO
V
V
MAIN
OSC
I
IN
FB
IN
V
V
V
V
MAX1542
MAX1543
Rising edge
Hysteresis
MAX1542
MAX1543
MAX1543, V
MAX1543, V
MAX1543, V
No load
V
0 ≤ I
V
IN
IN
FB
FB
FB
IN
rising
falling
= 2.6V to 5.5V
= 1.3V, LX not switching
= 1.1V, LX switching
falling
MAIN
≤ full load
IN
IN
FREQ
= 2.6V to 5.5V
= 2.6V to 5.5V
CONDITIONS
= 1.0V
DRN (MAX1543) to AGND .........................-0.3V to (SRC + 0.3V)
DRN (MAX1543) to COM.........................................-30V to +30V
MAX1542 COM RMS Output Current ...............................+75mA
MAX1543 COM RMS Output Current ...............................±50mA
OUT1, OUT2 Continuous Output Current.........................±75mA
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
20-Pin Thin QFN 5mm x 5mm
(derate 20.8mW/°C above +70°C) .............................1667mW
FREQ = AGND
FREQ = IN
FREQ = AGND
FREQ = IN
T
T
A
A
= +85°C
= 0°C to +85°C
A
= 0°C to +85°C, typical values at T
1.224
1.222
1020
1020
0.7 x
MIN
0.96
512
V
V
2.6
2.3
2.2
3.5
82
IN
IN
A
= +70°C)
1.240
1.240
-0.08
1200
1200
TYP
2.35
0.45
160
600
2.5
3.6
55
51
55
15
87
-1
5
1
0.3 x V
±0.15
1.256
1.258
MAX
1380
1380
0.65
1.04
768
5.5
2.7
2.5
6.5
6.5
13
92
IN
A
= +25°C,
UNITS
kHz
%/V
mA
ms
µA
°C
%
%
V
V
V
V
V
V
V