MAX1709ESE+T ,4A, Low-Noise, High-Frequency, Step-Up DC-DC ConverterFeaturesThe MAX1709 sets a new standard of space savings for On-Chip 10A Power MOSFEThigh-power, s ..
MAX1709ESE+T ,4A, Low-Noise, High-Frequency, Step-Up DC-DC ConverterELECTRICAL CHARACTERISTICS(V = V = +3.6V, ONA = ONB = FB = GND, T = 0°C to +85°C, unless otherwise ..
MAX170CCPA ,Serial Output 5.6us 12-Bit A/D Converter
MAX170CCPA ,Serial Output 5.6us 12-Bit A/D Converter
MAX170CCPA+ ,Serial Output, 5.6µs, 12-Bit ADC with ReferenceELECTRICAL CHARACTERISTICS (continued) a
(Wo 7 +5V f5%, Vss : -11.4V to -15.75V,' fCLK = 2.5MH2; T ..
MAX170CCPA+ ,Serial Output, 5.6µs, 12-Bit ADC with ReferenceELECTRICAL CHARACTERISTICS (continued) a
(Wo 7 +5V f5%, Vss : -11.4V to -15.75V,' fCLK = 2.5MH2; T ..
MAX452CSA ,CMOS Video Multiplexer/AmplifierELECTRICAL CHARACTERISTICS MAX452/3/4/5
(V + = +5V, V‘ = -w, -2vs Mn S +2V, Output Load Resistor=1 ..
MAX452CSA ,CMOS Video Multiplexer/Amplifier19-0978; Rev 0; T/87
lVl/JXI/VI
CMOS Video Multiplexer/Amplifier
MAX452CSA+ ,50MHz Video Amplifier and Mux AmpsFeatures
_ Unlty-galn bandwidth of 50MHz typ.
Low Input capacitance: 7pF typ.
No frequency ..
MAX452EPA ,CMOS Video Multiplexer/AmplifierFeatures
_ Unlty-galn bandwidth of 50MHz typ.
Low Input capacitance: 7pF typ.
No frequency ..
MAX452ESA+ ,50MHz Video Amplifier and Mux AmpsELECTRICAL CHARACTERISTICS MAX452/3/4/5
(V + = +5V, V‘ = -w, -2vs Mn S +2V, Output Load Resistor=1 ..
MAX4530CAP ,Low-Voltage / CMOS Analog Multiplexers/Switches with Enable Inputs and Address LatchingELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +5V ±10%, V- = -5V ±10%, GND = 0V, V = V = V = 2.4V, ..
MAX1709ESE+-MAX1709ESE+T
4A, Low-Noise, High-Frequency, Step-Up DC-DC Converter
General DescriptionThe MAX1709 sets a new standard of space savings for
high-power, step-up DC-DC conversion. It delivers up
to 20W at a fixed (3.3V or 5V) or adjustable (2.5V to
5.5V) output, using an on-chip power MOSFET from a
+0.7V to +5V supply.
Fixed-frequency PWM operation ensures that the
switching noise spectrum is constrained to the 600kHz
fundamental and its harmonics, allowing easy postfilter-
ing for noise reduction. External clock synchronization
capability allows for even tighter noise spectrum con-
trol. Quiescent power consumption is less than 1mW to
extend operating time in battery-powered systems.
Two control inputs (ONA, ONB) allow simple push-on,
push-off control through a single momentary pushbut-
ton switch, as well as conventional on/off logic control.
The MAX1709 also features programmable soft-start
and current limit for design flexibility and optimum per-
formance with batteries. The maximum RMS switch cur-
rent rating is 10A. For a device with a lower current
rating, smaller size, and lower cost, refer to the
MAX1708 data sheet.
________________________ApplicationsRouters, Servers, Workstations, Card Racks
Local 2.5V to 3.3V or 5V Conversion
Local 3.3V to 5V Conversion
3.6V or 5V RF PAs in Communications Handsets
FeaturesOn-Chip 10A Power MOSFET5V, 4A Output from a 3.3V InputFixed 3.3V or 5V Output Voltage or
Adjustable (2.5V to 5.5V)Input Voltage Range Down to 0.7VLow Power Consumption
1mW Quiescent Power
1µA Current in Shutdown ModeLow-Noise, Constant Frequency Operation
(600kHz)Synchronizable Switching Frequency
(350kHz to 1000kHz)
MAX1709
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter
Pin Configurationypical Operating Circuit19-1724; Rev 0; 5/00
Ordering Information
MAX1709
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICSStresses 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.
ONA, ONB, OUT, SS/LIM, 3.3/5 to GND...............-0.3V to +6.0V
LX to PGND...........................................................-0.3V to +6.0V
FB, CLK, REF to GND..............................-0.3V to (VOUT+ 0.3V)
PGND to GND.......................................................-0.3V to +0.3V
Continuous Power Dissipation (TA= +70°C)
16-Pin Narrow SO (derate 16.5mW/°C above +70°C).....1.3W
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature ........................................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX1709
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)
ELECTRICAL CHARACTERISTICS
Note 1:Output voltage is specified at 1A switch current ISW, which is equivalent to approximately 1A ✕(VIN/ VOUT) of load current.
Note 2:Load regulation is measured by forcing specified switch current and straight-line calculation of change in output voltage in
external feedback mode. Note that the equivalent load current is approximately ISW✕(VIN/ VOUT).
Note 3:Until undervoltage lockout is reached, the device remains in startup mode. Do not apply full load until this voltage is
reached.
Note 4:Startup is tested with Figure 1’s circuit. Output current is measured when both the input and output voltages are applied.
Note 5:Minimum operating voltage. The MAX1709 is bootstrapped and will operate down to a 0.7V input once started.
Note 6:Supply current is measured from the OUT pin to the output voltage (+3.3V). This correlates directly with actual input supply
current but is reduced in value according to the step-up ratio and efficiency.
Note 7:ONA and ONBinputs have approximately 0.15V hysteresis.
Note 8:Guaranteed by design, not production tested.
Note 9:Specifications to -40°C are guaranteed by design, not production tested.
MAX1709
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)
MAX1709
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter
Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
MAX1709
4A, Low-Noise, High-Frequency,
Step-Up DC-DC Converter100150200250300
SWITCH CURRENT LIMIT
vs. SS/LIM RESISTANCEMAX1709 TOC10
SS/LIM RESISTANCE (kΩ)
CURRENT LIMIT (A)
SWITCH CURRENT LIMIT
vs. TEMPERATURE
MAX1709-12
TEMPERATURE (°C)
CURRENT LIMIT (A)
Typical Operating Characteristics (continued)(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
