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MAX1677 Datasheet(PDF) 2 Page - Maxim Integrated Products

Part No. MAX1677
Description  Compact, High-Efficiency, Dual-Output Step-Up and LCD Bias DC-DC Converter
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX1677 Datasheet(HTML) 2 Page - Maxim Integrated Products

 
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Compact, High-Efficiency, Dual-Output
Step-Up and LCD Bias DC-DC Converter
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VOUT = 3.3V, CREF = 0.1µF, POUT = OUT, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
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.
OUT, LCDON, ON, POUT, LBI, LBO,
LX to GND .............................................................-0.3V to +6V
CLK/SEL, LCDPOL, REF, LCDFB,
FB to GND .............................................-0.3V to (VOUT + 0.3V)
LCDLX to GND .......................................................-0.3V to +30V
PGND, LCDGND to GND ......................................-0.3V to +0.3V
POUT to OUT.........................................................-0.3V to +0.3V
Continuous Power Dissipation (TA = +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........696mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
TA = +25°C, ILOAD < 1mA
No load, current into OUT
No load, current into OUT
IREF = 0
IREF = 0 to 50µA (Note 2)
VOUT = 2.5V to 5.5V
No load, current into OUT
V
0.9
1.1
VSTARTUP
Minimum Start-Up Voltage
µA
0.3
5
Supply Current in Shutdown
µA
115
300
IPWM
Supply Current All On,
Main DC-DC in PWM Mode
µA
35
60
IPFM
Supply Current All On,
Main DC-DC in PFM Mode
V
1.23
1.25
1.27
VREF
Reference Voltage
mV
2
15
Reference Load Regulation
mV
0.2
5
Reference Line Rejection
µA
20
40
ILCDOFF
Supply Current
Main DC On, LCD Off
MAIN BOOST DC-DC
Output Voltage
VOUT
FB = GND, 0
≤ ILX ≤ 350mA,
CLK/SEL = OUT (Note 3)
3.20
3.30
3.43
V
FB Regulation Voltage
VFB(REG)
Adjustable mode, CLK/SEL = OUT (Note 3)
1.225
1.25
1.275
V
FB Input Current
IFB
VFB = 1.3V
0.02
50
nA
Output Voltage Adjustment
Range
2.5
5.5
V
Start-Up to Normal Mode
Transition Voltage (Note 4)
VLOCKOUT
2.1
2.4
V
Line Regulation
IOUT = 150mA, VIN = 2V to 3V
0.6
%
Load Regulation
CLK/SEL = OUT, VIN = 2.4V,
I LOAD = 10mA to 200mA
1
%
Frequency in Start-Up Mode
fSTARTUP
VOUT = 1.5V
40
300
kHz
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
LX Leakage Current
ILX(LEAK)
0.2
5
µA
(Note 1)
V
0.7
5.5
VIN
Input Voltage Range
GENERAL
MAIN BOOST DC-DC


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