Rainbow Electronics MAX1676 User Manual
Page 2
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.)
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.
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, 10s) .................................+300°C
T
A
= +25°C, R
L
= 3k
Ω (Note 1)
V
LX
= 0, 5.5V; V
OUT
= 5.5V
T
A
= +25°C
MAX1675, MAX1676 (CLSEL = GND)
MAX1674, MAX1676 (CLSEL = OUT)
I
LX
= 100mA
FB = OUT
(V
OUT
= 3.3V)
V
OUT
= 2V to 5.5V
I
REF
= 0 to 100µA
90
130
MAX1675,
MAX1676 (CLSEL = GND)
FB = OUT
FB = GND
I
REF
= 0
CONDITIONS
µA
0.05
1
I
LEAK
LX Leakage Current
A
0.4
0.5
0.65
I
LIM
0.80
1
1.20
LX Switch Current
Limit (NFET)
Ω
0.3
0.6
R
DS(ON)
Internal NFET, PFET
On-Resistance
V
1.274
1.30
1.326
FB, LBI Input Threshold
mV/V
0.08
2.5
V
REF_LINE
Reference Voltage Line
Regulation
mV
3
15
V
REF_LOAD
Reference Voltage Load
Regulation
mV/°C
0.024
TEMPCO
Reference Voltage Tempco
V
1.274
1.30
1.326
V
REF
Reference Voltage
V
0.9
1.1
Start-Up Voltage
V
1.1
5.5
V
IN
V
0.7
Minimum Input Voltage
Operating Voltage
150
220
FB = GND
(V
OUT
= 5V)
MAX1675,
MAX1676 (CLSEL = GND)
180
285
I
OUT
MAX1674,
MAX1676 (CLSEL = OUT)
mA
300
420
Steady-State Output Current
(Note 2)
mV/°C
-2
Start-Up Voltage Tempco
V
3.17
3.30
3.43
V
OUT
Output Voltage
4.80
5
5.20
MAX1674,
MAX1676 (CLSEL = OUT)
V
2
5.5
Output Voltage Range
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER