MAX5026EUT-T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX5026EUT-T ,500kHz / 36V Output / SOT23 / PWM Step-Up DC-DC ConvertersApplications Small, 6-Pin SOT23 PackageTV Tuner Power SupplyLow-Noise Varactor Diode BiasingOrderi ..
MAX5026EUT-T ,500kHz / 36V Output / SOT23 / PWM Step-Up DC-DC ConvertersFeaturesThe MAX5025–MAX5028 constant-frequency, pulse- Input Voltage Range:width modulating (PWM), ..
MAX502ACNG+ ,Voltage-Output, 12-Bit Multiplying DACsFeatures . 12-Blt Voltage Output DAC . i10V and SmA Output Drive . Monotonic Over Temperat ..
MAX502ACWG+T ,Voltage-Output, 12-Bit Multiplying DACsApplications Digital Attenuators Gain Amplifiers Digital to 4mA-to-20mA Converters Automatic ..
MAX502AEWG+ ,Voltage-Output, 12-Bit Multiplying DACsELECTRICAL CHARACTERISTICS Dual Supply (VDD = +11.4V to +15.75V, Vss = -11.4V to -15.75V, VREF = ..
MAX502AEWG+T ,Voltage-Output, 12-Bit Multiplying DACsGeneral Description The MAX501/MAX502 are 12-bit, 4-quadrant, voltage- output, multiplying digi ..
MAX9209EUM+D ,Programmable DC-Balanced 21-Bit SerializersApplications♦ Low-Profile 48-Lead TSSOP and Space-SavingAutomotive Navigation SystemsTQFN PackagesA ..
MAX9209EUM+TD ,Programmable DC-Balanced 21-Bit SerializersMAX9209/MAX921319-2828; Rev 5; 3/12Programmable DC-Balanced 21-Bit Serializers
MAX920ESA ,SOT23 / 1.8V / Nanopower / Beyond-the-Rails Comparators With/Without ReferenceApplicationsOrdering Information2-Cell Battery Monitoring/ManagementTEMP. PIN- SOT Ultra-Low-Power ..
MAX920ESA ,SOT23 / 1.8V / Nanopower / Beyond-the-Rails Comparators With/Without ReferenceFeaturesThe MAX917–MAX920 nanopower comparators in♦ Ultra-Low Supply Currentspace-saving SOT23 pack ..
MAX920ESA+ ,SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without ReferenceMAX917–MAX92019-1512; Rev 2; 10/10SOT23, 1.8V, Nanopower, Beyond-the-RailsComparators With/Without ..
MAX920ESA+T ,SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without ReferenceELECTRICAL CHARACTERISTICS—MAX917/MAX918 (continued)(V = +5V, V = 0V, V = V , T = -40°C to +85°C, u ..

MAX5026EUT-T
500kHz / 36V Output / SOT23 / PWM Step-Up DC-DC Converters
General Description
The MAX5025–MAX5028 constant-frequency, pulse-
width modulating (PWM), low-noise boost converters
are intended for low-voltage systems that often need a
locally generated high voltage. These devices are
capable of generating low-noise, high output voltages
required for varactor diode biasing in TV tuners, set-top
boxes, and PCI cable modems. The MAX5025–
MAX5028 operate from as low as 3V and switch at
500kHz.
The constant-frequency, current-mode PWM architec-
ture provides for low output noise that is easy to filter. A
40V lateral DMOS device is used as the internal power
switch, making the devices ideal for boost converters
up to 36V. The MAX5025/MAX5026 adjustable versions
require the use of external feedback resistors to set the
output voltage. The MAX5027/MAX5028 offer a fixed
30V output. These devices are available in a small, 6-
pin SOT23 package.
Applications
TV Tuner Power Supply
Low-Noise Varactor Diode Biasing
Set-Top Box Tuner Power Supply
PCI Cable Modem
Voice-Over-Cable
LCD Power Supply
Avalanche Photodiode Biasing
FeaturesInput Voltage Range:
3V to 11V (MAX5026/MAX5028)
4.5V to 11V (MAX5025/MAX5027)Wide Output Voltage Range: VCCto 36VOutput Power: 120mW (max)User-Adjustable Output Voltage with
MAX5025/MAX5026 Using External Feedback
ResistorsFixed 30V Output Voltage: MAX5027/MAX5028Internal 1.3Ω(typ), 40V SwitchConstant PWM Frequency Provides Easy Filtering
in Low-Noise Applications500kHz (typ) Switching Frequency1µA (max) Shutdown CurrentSmall, 6-Pin SOT23 Package
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
Pin Configuration
Typical Operating Circuit
19-2239; Rev 1; 12/01
Ordering Information
Selector Guide appears at end of data sheet.
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
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.
VCCto GND............................................................-0.3V to +12V
PGND to GND.......................................................-0.1V to +0.1V
FB to GND (MAX5025/MAX5026)...............-0.3V to (VCC+ 0.3V)
FB to GND (MAX5027/MAX5028)...........................-0.3V to +40V
SHDNto GND.............................................-0.3V to (VCC+ 0.3V)
LX to GND..............................................................-0.3V to +45V
Peak LX Current................................................................600mA
Operating Temperature Range...........................-40°C to +85°C
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 7.1mW/°C above +70°C)..........695.7mW
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +165°C
Lead Temperature (soldering 10s)..................................+300°C
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
ELECTRICAL CHARACTERISTICS (continued)
(VCC= 5V, SHDN= VCC, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
Note 2:Switch current-limit accuracy is typically ±20% and is a function of the input voltage. ILIM= (VIN/5) (260mA).
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters46810
MAX5025-28 toc01
LOAD CURRENT (mA)
EFFICIENCY (%)
EFFICIENCY vs. LOAD CURRENT
(VOUT = 12V)268
MAX5025-28 toc02
LOAD CURRENT (mA)
EFFICIENCY (%)
EFFICIENCY vs. LOAD CURRENT
(VOUT = 15V)2345
MAX5025-28 toc03
LOAD CURRENT (mA)
EFFICIENCY (%)
EFFICIENCY vs. LOAD CURRENT
(VOUT = 24V)
MAX5025-28 toc04
LOAD CURRENT (mA)
EFFICIENCY (%)
EFFICIENCY vs. LOAD CURRENT
(VOUT = 30V)
MAX5025-28 toc05
LOAD CURRENT (mA)
STARTUP VOLTAGE (V)
MAX5026 MINIMUM STARTUP VOLTAGE
vs. LOAD CURRENT
MAX5025-28 toc06
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
MAX5026/MAX5028
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX5025-28 toc07
NO LOAD SUPPLY CURRENT (mA)
MAX5026
NO LOAD SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
MAX5025-28 toc08
SUPPLY CURRENT (
MAX5025-28 toc09
SWITCHING FREQUENCY (kHz)
MAX5026
SWITCHING FREQUENCY vs. TEMPERATURE
Typical Operating Characteristics
(VCC= 5V, VOUT= 30V, TA= +25°C, unless otherwise noted.)
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
EXITING SHUTDOWN
MAX5025-28 toc10
OUTPUT
VOLTAGE
20V/div
INDUCTOR
CURRENT
50mA/div
SHUTDOWN
VOLTAGE
5V/div
30V
2ms/div
MAX5026, VCC = 5V, VOUT = 30V, ILOAD = 1mA.
CIRCUIT OF FIGURE 3
ENTERING SHUTDOWN
MAX5025-28 toc11
30V
OUTPUT
VOLTAGE
20V/div
SHUTDOWN
VOLTAGE
5V/div
100ms/div
MAX5026, VCC = 5V, VOUT = 30V, ILOAD = 1mA.
CIRCUIT OF FIGURE 3
MAX5025-28 toc12
LX PIN
20V/div
VOUT
2mV/div
AC-COUPLED
100mA/div
0mA
1µs/div
MAX5026, VCC = 5V, VOUT = 30V, ILOAD = 0.1mA.
CIRCUIT OF FIGURE 2
LIGHT-LOAD SWITCHING WAVEFORM
WITHOUT RC FILTER
MAX5025-28 toc13
LX PIN
20V/div
VOUT
1mV/div
AC-COUPLED
100mA/div
0mA
1µs/div
MAX5026, VCC = 5V, VOUT = 30V, ILOAD = 0.1mA.
CIRCUIT OF FIGURE 3
LIGHT-LOAD SWITCHING WAVEFORM
WITH RC FILTER
MAX5025-28 toc14
LX PIN
20V/div
VOUT
5mV/div
AC-COUPLED
200mA/div
0mA
1µs/div
MAX5026, VCC = 5V, VOUT = 30V, ILOAD = 2mA.
MEDIUM-LOAD SWITCHING WAVEFORM
WITHOUT RC FILTER
MAX5025-28 toc15
LX PIN
20V/div
VOUT
1mV/div
AC-COUPLED
200mA/div
0mA
1µs/div
MAX5026, VCC = 5V, VOUT = 30V, ILOAD = 2mA.
MEDIUM-LOAD SWITCHING WAVEFORM
WITH RC FILTER
Typical Operating Characteristics (continued)
(VCC= 5V, VOUT= 30V, TA= +25°C, unless otherwise noted.)
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
Typical Operating Characteristics (continued)
(VCC= 5V, VOUT= 30V, TA= +25°C, unless otherwise noted.)
MAX5025–MAX5028
500kHz, 36V Output, SOT23, PWM Step-Up
DC-DC Converters
MAX5025-28 toc23
TEMPERATURE (°C)
LX LEAKAGE CURRENT (
LX LEAKAGE CURRENT vs. TEMPERATURE1345
LOAD REGULATION
MAX5025-28 toc24
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
MAX5025-28 toc25
INPUT VOLTAGE (V)
MAXIMUM LOAD CURRENT (mA)
MAX5026
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE75
Typical Operating Characteristics (continued)
(VCC= 5V, VOUT= 30V, TA= +25°C, unless otherwise noted.)

Partno	Mfg	Dc	Qty	Available	Descript
MAX5026EUT-T \|MAX5026EUTT	MAXIM ?	N/a	15	avai	500kHz / 36V Output / SOT23 / PWM Step-Up DC-DC Converters
MAX5026EUT-T \|MAX5026EUTT	MAXIM	N/a	5900	avai	500kHz / 36V Output / SOT23 / PWM Step-Up DC-DC Converters