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| MAX1674 Datasheet, PDF (2/12 Pages) Maxim Integrated Products – High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Converters | |||
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High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (OUT to GND) ..............................-0.3V to +6.0V
Switch Voltage (LX to GND) .....................-0.3V to (VOUT + 0.3V)
Battery Voltage (BATT to GND).............................-0.3V to +6.0V
SHDN, LBO to GND ..............................................-0.3V to +6.0V
LBI, REF, FB, CLSEL to GND ...................-0.3V to (VOUT + 0.3V)
Switch Current (LX) ...............................................-1.5A to +1.5A
Output Current (OUT) ...........................................-1.5A to +1.5A
Continuous Power Dissipation (TA = +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under âAbsolute Maximum Ratingsâ 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.
ELECTRICAL CHARACTERISTICS
(VBATT = 2V, FB = OUT (VOUT = 3.3V), RL = Ëâ, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Minimum Input Voltage
Operating Voltage
Start-Up Voltage
Start-Up Voltage Tempco
Output Voltage
Output Voltage Range
Steady-State Output Current
(Note 2)
Reference Voltage
Reference Voltage Tempco
Reference Voltage Load
Regulation
SYMBOL
CONDITIONS
VIN
TA = +25°C
TA = +25°C, RL = 3k⦠(Note 1)
VOUT
FB = OUT
FB = GND
IOUT
VREF
TEMPCO
FB = OUT
(VOUT = 3.3V)
MAX1674,
MAX1676 (CLSEL = OUT)
MAX1675,
MAX1676 (CLSEL = GND)
FB = GND
(VOUT = 5V)
MAX1674,
MAX1676 (CLSEL = OUT)
MAX1675,
MAX1676 (CLSEL = GND)
IREF = 0
VREF_LOAD IREF = 0 to 100µA
MIN TYP MAX UNITS
0.7
V
1.1
5.5
V
0.9
1.1
V
-2
mV/°C
3.17 3.30 3.43
V
4.80
5
5.20
2
5.5
V
300
420
150
220
mA
180
285
90
1.274
130
1.30
0.024
3
1.326
V
mV/°C
15
mV
Reference Voltage Line
Regulation
FB, LBI Input Threshold
Internal NFET, PFET
On-Resistance
LX Switch Current
Limit (NFET)
LX Leakage Current
VREF_LINE VOUT = 2V to 5.5V
RDS(ON)
ILIM
ILEAK
ILX = 100mA
MAX1674, MAX1676 (CLSEL = OUT)
MAX1675, MAX1676 (CLSEL = GND)
VLX = 0, 5.5V; VOUT = 5.5V
1.274
0.80
0.4
0.08
1.30
0.3
1
0.5
0.05
2.5
1.326
0.6
1.20
0.65
1
mV/V
V
â¦
A
µA
2 _______________________________________________________________________________________
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