High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
MAX1674/MAX1675/MAX1676
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (OUT to GND) ..............................-0.3V to +6.0V
Switch Voltage (LX to GND) .....................-0.3V to (V
OUT
+ 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 (V
OUT
+ 0.3V)
Switch Current (LX) ...............................................-1.5A to +1.5A
Output Current (OUT) ...........................................-1.5A to +1.5A
Continuous Power Dissipation (T
A
= +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, 10sec) .............................+300°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.
ELECTRICAL CHARACTERISTICS
(V
BATT
= 2V, FB = OUT (V
OUT
= 3.3V), R
L
= ˙∞,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
Minimum Input Voltage
Operating Voltage
Start-Up Voltage
Start-Up Voltage Tempco
Output Voltage
Output Voltage Range
FB = OUT
(V
OUT
= 3.3V)
Steady-State Output Current
(Note 2)
I
OUT
FB = GND
(V
OUT
= 5V)
Reference Voltage
Reference Voltage Tempco
Reference Voltage Load
Regulation
Reference Voltage Line
Regulation
FB, LBI Input Threshold
Internal NFET, PFET
On-Resistance
LX Switch Current
Limit (NFET)
LX Leakage Current
R
DS(ON)
I
LIM
I
LEAK
I
LX
= 100mA
MAX1674, MAX1676 (CLSEL = OUT)
MAX1675, MAX1676 (CLSEL = GND)
V
LX
= 0, 5.5V; V
OUT
= 5.5V
0.80
0.4
V
REF
TEMPCO
V
REF_LOAD
V
REF_LINE
I
REF
= 0 to 100µA
V
OUT
= 2V to 5.5V
1.274
I
REF
= 0
MAX1674,
MAX1676 (CLSEL = OUT)
MAX1675,
MAX1676 (CLSEL = GND)
MAX1674,
MAX1676 (CLSEL = OUT)
MAX1675,
MAX1676 (CLSEL = GND)
V
OUT
FB = OUT
FB = GND
3.17
4.80
2
300
150
180
90
1.274
420
220
mA
285
130
1.30
0.024
3
0.08
1.30
0.3
1
0.5
0.05
15
2.5
1.326
0.6
1.20
0.65
1
1.326
V
mV/°C
mV
mV/V
V
Ω
A
µA
V
IN
T
A
= +25°C
T
A
= +25°C, R
L
= 3kΩ (Note 1)
1.1
0.9
-2
3.30
5
3.43
5.20
5.5
SYMBOL
CONDITIONS
MIN
TYP
0.7
5.5
1.1
MAX
UNITS
V
V
V
mV/°C
V
V
2
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
