MAX1676EUB ,High-Efficiency / Low-Supply-Current / Compact / Step-Up DC-DC Convertersfeatures an adjustable cur-rent limit and circuitry to reduce inductor ringing._______________Order ..
MAX1676EUB ,High-Efficiency / Low-Supply-Current / Compact / Step-Up DC-DC ConvertersApplicationsMAX1674EUA -40°C to +85°C 8 µMAXPagersMAX1675EUA -40°C to +85°C 8 µMAXWireless PhonesMA ..
MAX1676EUB ,High-Efficiency / Low-Supply-Current / Compact / Step-Up DC-DC ConvertersApplicationsMAX1674EUA -40°C to +85°C 8 µMAXPagersMAX1675EUA -40°C to +85°C 8 µMAXWireless PhonesMA ..
MAX1676EUB+ ,High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC ConvertersFeaturesThe MAX1674/MAX1675/MAX1676 compact, high-effi-♦ 94% Efficient at 200mA Output Currentcienc ..
MAX1676EUB+ ,High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Convertersfeatures an adjustable cur-rent limit and circuitry to reduce inductor ringing._______________Order ..
MAX1676EUB+T ,High-Efficiency, Low-Supply-Current, Compact, Step-Up DC-DC Convertersfeatures an adjustable cur-rent limit and circuitry to reduce inductor ringing._______________Order ..
MAX4436ESA+ ,Single-Supply, 150MHz, 16-Bit Accurate, Ultra-Low Distortion Op Amps
MAX4444ESE+T ,Ultra-High-Speed, Low-Distortion, Differential-to-Single-Ended Line Receivers with Enable
MAX4447ESE ,6500V/s / Wideband / High-Output-Current / Single- Ended-to-Differential Line Drivers with Enable
MAX4447ESE+ ,6500V/µs, Wideband, High-Output-Current, Single-Ended-to-Differential Line Drivers with Enable
MAX4450EXK+T ,Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs
MAX4450EXK-T ,Ultra-Small / Low-Cost / 210MHz / Single-Supply Op Amps with Rail-to-Rail Outputs
MAX1674EUA-MAX1675EUA-MAX1676EUB
High-Efficiency / Low-Supply-Current / Compact / Step-Up DC-DC Converters
General DescriptionThe MAX1674/MAX1675/MAX1676 compact, high-effi-
ciency, step-up DC-DC converters fit in small µMAX
packages. They feature a built-in synchronous rectifier,
which improves efficiency and reduces size and cost
by eliminating the need for an external Schottky diode.
Quiescent supply current is only 16µA.
The input voltage ranges from 0.7V to VOUT, where
VOUTcan be set from 2V to 5.5V. Start-up is guaran-
teed from 1.1V inputs. The MAX1674/MAX1675/
MAX1676 have a preset, pin-selectable output for 5V or
3.3V. The outputs can also be adjusted to other volt-
ages using two external resistors.
All three devices have a 0.3ΩN-channel MOSFET
power switch. The MAX1674 has a 1A current limit. The
MAX1675 has a 0.5A current limit, which permits the
use of a smaller inductor. The MAX1676 comes in a
10-pin µMAX package and features an adjustable cur-
rent limit and circuitry to reduce inductor ringing.
________________________ApplicationsPagers
Wireless Phones
Medical Devices
Hand-Held Computers
PDAs
RF Tags
1 to 3-Cell Hand-Held Devices
____________________________Features94% Efficient at 200mA Output Current16µA Quiescent Supply CurrentInternal Synchronous Rectifier (no external diode)0.1µA Logic-Controlled ShutdownLBI/LBO Low-Battery DetectorSelectable Current Limit for Reduced RippleLow-Noise, Anti-Ringing Feature (MAX1676)8-Pin and 10-Pin µMAX PackagesPreassembled Evaluation Kit (MAX1676EVKIT)
MAX1674/MAX1675/MAX1676, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
Typical Operating Circuit
Pin Configurations
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VBATT= 2V, FB = OUT (VOUT= 3.3V), RL= ˙∞, 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.
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 +6.0VSHDN, LBOto 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) ...........444mWOperating 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
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
ELECTRICAL CHARACTERISTICS(VBATT= 2V, FB = OUT, RL= ∞, TA
= -40°C to +85°C, unless otherwise noted.) (Note 4)
Note 1:Start-up voltage operation is guaranteed with the addition of a Schottky MBR0520 external diode between the input and
output.
Note 2:Steady-state output current indicates that the device maintains output voltage regulation under load. See Figures 5 and 6.
Note 3:Device is bootstrapped (power to the IC comes from OUT). This correlates directly with the actual battery supply.
ELECTRICAL CHARACTERISTICS (continued)(VBATT= 2V, FB = OUT (VOUT= 3.3V), RL= ˙∞, TA
= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
Typical Operating Characteristics(L = 22µH, CIN= 47µF, COUT= 47µFœœ0.1µF, CREF= 0.1µF, TA= +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)(VBATT= 2V, FB = OUT, RL= ∞, TA
= -40°C to +85°C, unless otherwise noted.) (Note 4)
Note 4:Specifications to -40°C are guaranteed by design, not production tested.
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
Typical Operating Characteristics (continued)(L = 22µH, CIN= 47µF, COUT= 47µFœœ0.1µF, CREF= 0.1µF, TA= +25°C, unless otherwise noted.)
MAX1674/MAX1675/MAX1676
High-Efficiency, Low-Supply-Current,
Compact, Step-Up DC-DC Converters
Typical Operating Characteristics (continued)(L = 22µH, CIN= 47µF, COUT= 47µFœœ0.1µF, CREF= 0.1µF, TA= +25°C, unless otherwise noted.)
Pin DescriptionDual-Mode is a trademark of Maxim Integrated Products.
