MAX1817EUB ,Compact / High-Efficiency / Dual-Output Step-Up DC-DC ConverterELECTRICAL CHARACTERISTICS(V = V =V = +3.3V, FB = GND, T = 0°C to +85°C, unless otherwise noted. Ty ..
MAX1817EUB ,Compact / High-Efficiency / Dual-Output Step-Up DC-DC ConverterFeaturesThe MAX1817 is a compact, high-efficiency, dual-out- Dual Step-Up Converter in a Tiny 10-P ..
MAX1817EUB ,Compact / High-Efficiency / Dual-Output Step-Up DC-DC ConverterApplications Ordering InformationOrganizers/Translators PART TEMP. RANGE PIN-PACKAGE MAX1817EUB -40 ..
MAX1817EUB ,Compact / High-Efficiency / Dual-Output Step-Up DC-DC ConverterELECTRICAL CHARACTERISTICS (continued)(V = V = V = +3.3V, FB = GND, T = 0°C to +85°C, unless otherw ..
MAX1817EUB+ ,Compact, High-Efficiency, Dual-Output, Step-Up DC-DC ConverterApplications Ordering InformationOrganizers/Translators PART TEMP. RANGE PIN-PACKAGE MAX1817EUB -40 ..
MAX1818EUT15#TG16 ,500mA, Low-Dropout Linear Regulator in SOT23FeaturesThe MAX1818 low-dropout linear regulator operates♦ Guaranteed 500mA Output Currentfrom a +2 ..
MAX4684EBC+T ,0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSPELECTRICAL CHARACTERISTICS—+3V SUPPLY(V+ = +2.7V to +3.3V, V = +1.4V, V = +0.5V, T = T to T , unles ..
MAX4684EBC-T ,0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSPfeatures a 0.5Ω (max) R for its NCON♦ NO Switch RONswitch and a 0.8Ω (max) R for its NO switch at a ..
MAX4684EBC-T ,0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSPELECTRICAL CHARACTERISTICS—+3V SUPPLY(V+ = +2.7V to +3.3V, V = +1.4V, V = +0.5V, T = T to T , unles ..
MAX4684EBC-T ,0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSPApplications Ordering InformationSpeaker Headset Switching PIN/B U M P- TOPPART TEMP RANGEMARKMP3 ..
MAX4684ETB ,0.5 /0.8 Low-Voltage / Dual SPDT Analog Switches in UCSPApplicationsSpeaker Headset Switching PIN/BUMP-TOPPART TEMP RANGEMARKPACKAGEMP3 PlayersMAX4684EBC - ..
MAX4684ETB+ ,0.5Ω/0.8Ω Low-Voltage, Dual SPDT Analog Switches in UCSPFeatures♦ 12-Bump, 0.5mm-Pitch UCSPThe MAX4684/MAX4685 low on-resistance (R ), low-ON♦ NC Switch Rv ..
MAX1817EUB
Compact / High-Efficiency / Dual-Output Step-Up DC-DC Converter
General DescriptionThe MAX1817 is a compact, high-efficiency, dual-out-
put step-up converter for portable devices that pro-
vides both the main logic supply and the LCD bias. The
device operates from an input voltage of +1.5V to
+5.5V, allowing the use of 2- or 3-cell alkaline batteries,
or 1-cell lithium-ion (Li+) batteries.
The MAX1817’s main regulator supplies 125mA at
either a preset 3.3V or an adjustable 2.5V to 5.5V out-
put voltage with up to 88% efficiency. A 0.1µA shut-
down state also minimizes battery drain. The
MAX1817’s secondary step-up converter provides the
LCD bias voltage and is adjustable up to +28V.
Other features include a fast switching frequency to
reduce the size of external components and a low qui-
escent current to maximize battery life. Both outputs can
be independently shut down for improved flexibility.
The MAX1817 is supplied in a compact 10-pin µMAX
package. The MAX1817 evaluation kit (MAX1817EVKIT)
is available to speed up design.
________________________ApplicationsOrganizers/Translators
PDAs
MP3 Players
GPS Receivers
FeaturesDual Step-Up Converter in a Tiny 10-Pin µMAX
Package Main Output
Up to 125mA Load Current
Fixed 3.3V or Adjustable 2.5V to 5.5V
Up to 88% Efficiency
Internal SwitchLCD Output
Up to 28V for LCD Bias
Internal SwitchInput Voltage Range +1.5V to +5.5VMinimal External Components Required0.1µA Logic-Controlled ShutdownLow 15µA Quiescent Supply Current
MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC Converter
Pin Configurationypical Operating Circuit19-1794 Rev 0; 10/00
Ordering Information
MAX1817
Compact, High-Efficiency, Dual-Output
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.
OUT to GND.............................................................-0.3V to +6V
ON, ONLCD, FB, FBLCD, LX to GND......-0.3V to (VOUT+ 0.3V)
LXLCD to GND.......................................................-0.3V to +30V
AGND to GND.......................................................-0.3V to +0.3V
Continuous Power Dissipation (TA= +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C)...........444mW
LXLCD, LX Maximum Current........................................0.5ARMS
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Dual Mode is a trademark of Maxim Integrated Products.
MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)(VON= VONLCD = VOUT= +3.3V, FB = GND, TA
= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS
MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC Converter
ELECTRICAL CHARACTERISTICS (continued)(VON= VONLCD = VOUT= +3.3V, FB = GND, TA
= -40°C to +85°C, unless otherwise noted.) (Note 1)
Note 1:Specifications to -40°C are guaranteed by design and not production tested.
MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC ConverterMAIN OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1817-01
LOAD CURRENT (mA)
EFFICIENCY (%)
LCD OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1817-02
LOAD CURRENT (mA)
EFFICIENCY (%)45
STARTUP VOLTAGE vs. LOAD CURRENT
MAX1817 toc03
STARTUP VOLTAGE (V)
LOAD CURRENT (mA)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (LCD OFF)
MAX1817 toc04
INPUT VOLTAGE (V)
SUPPLY CURRENT (
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1817-05
INPUT VOLTAGE (V)
SUPPLY CURRENT (
10µs/div
MAIN CONVERTER
SWITCHING WAVEFORMMAX1817-06
A: ILX, 500mA/div
B: VOUT, 50mV/div, AC-COUPLED
C: VLX, 5V/div
VIN = 2.4V, VOUT = 3.3V, ILOAD,OUT = 50mA, VONLCD = 0
4µs/div
LCD CONVERTER
SWITCHING WAVEFORMMAX1817-07
A: ILXLCD, 500mA/div
B: VLCD, 100mV/div, AC-COUPLED
C: VLXLCD, 10V/div
VIN = 2.4V, VOUT = 3.3V, ILOAD,OUT = 0,
VLCD = 18V, ILOAD,LCD = 5mA
Typical Operating Characteristics(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)
MAX1817
Compact, High-Efficiency, Dual-Output
Step-Up DC-DC Converter
Typical Operating Characteristics (continued)(Circuit of Figure 3, TA= +25°C, unless otherwise specified)
