MAX1606EUA ,28V Internal Switch LCD Bias Supply with True ShutdownFeaturesThe MAX1606 is a step-up DC-DC converter that con- Adjustable Output Voltage up to 28Vtain ..
MAX1606EUA ,28V Internal Switch LCD Bias Supply with True ShutdownApplicationsLCD Bias GeneratorsPART TEMP. RANGE PIN-PACKAGECellular or Cordless PhonesMAX1606EUA -4 ..
MAX1606EUA ,28V Internal Switch LCD Bias Supply with True ShutdownELECTRICAL CHARACTERISTICS(V = 3.3V, V = BATT = SHDN, T = 0°C to +85°C, unless otherwise noted. Typ ..
MAX1606EUA+ ,28V Internal Switch LCD Bias Supply with True Shutdown™ELECTRICAL CHARACTERISTICS(V = 3.3V, V = BATT = SHDN, T = 0°C to +85°C, unless otherwise noted. Typ ..
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MAX4305ESA+ ,740MHz, Low-Noise, Low-Distortion Op Amps in SOT23-5applications. These op amps also feature a wideoutput voltage swing of ±3.7V and ±70mA output curre ..
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MAX4309ESA ,400MHz / Ultra-Low-Distortion Op AmpsGeneral Description ________
MAX430CPA ,【15V Chopper-Stabilized Operational AmplifierApplications
Precision Amplifiers
Signal Conditioning for:
Thermocouples
Strain Gauges, Load Ce ..
MAX430CPA ,【15V Chopper-Stabilized Operational AmplifierGeneral Description
The MAX430 and MAX432 are CMOS :15V chopper-stabs
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MAX430EPA ,【15V Chopper-Stabilized Operational AmplifierFeatures
. No External Capacitors Required
. 10pV Max Offset Voltage
. 30pA Input Bias Cur ..
MAX1606EUA
28V Internal Switch LCD Bias Supply with True Shutdown
General DescriptionThe MAX1606 is a step-up DC-DC converter that con-
tains a 0.5A internal power switch and a 0.5A output
isolation switch in an 8-pin µMAX package. The IC
operates from a 2.4V to 5.5V supply voltage but can
boost battery voltages as low as 0.8V up to 28V.
The MAX1606 uses a unique control scheme that pro-
vides high efficiency over a wide range of load condi-
tions. An internal 0.5A MOSFET reduces external
component count, and a high switching frequency (up
to 500kHz) allows for tiny surface-mount components.
The current limit can be set to 500mA, 250mA, or
125mA, allowing the user to reduce the output ripple
and component size in low-current applications.
Additional features include a low quiescent supply cur-
rent and a true shutdown mode that saves power by
disconnecting the output from the input. The MAX1606
is ideal for small LCD panels with low current require-
ments but can also be used in other applications. A
MAX1606 evaluation kit is available to help speed up
design time.
________________________ApplicationsLCD Bias Generators
Cellular or Cordless Phones
Palmtop Computers
Personal Digital Assistants (PDAs)
Organizers
Handy Terminals
FeaturesAdjustable Output Voltage up to 28V20mA at 20V from a Single Li+ BatteryTrue Shutdown (Output Disconnected from Input)Output Short-Circuit Protection88% EfficiencyUp to 500kHz Switching FrequencySelectable Inductor Current Limit
(125mA, 250mA, or 500mA)0.1µA Shutdown Current8-Pin µMAX Package
MAX1606
28V Internal Switch LCDBias Supply
with True Shutdown
Pin Configurationypical Operating Circuit19-1744; Rev 0; 7/00
Ordering Information
MAX1606
28V Internal Switch LCDBias Supply
with True Shutdown
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.
VCC, FB, BATT, SW to GND.....................................-0.3V to +6V
BATT to SW..............................................................-0.3V to +6V
SHDN, LIM to GND.....................................-0.3V to (VCC + 0.3V)
LX to GND..............................................................-0.3V to +30V
Current into LX or BATT..............................................600mARMS
Current out of SW.......................................................600mARMS
Output Short-Circuit Duration........................................Indefinite
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C).............330mW
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
MAX1606
28V Internal Switch LCDBias Supply
with True Shutdown
ELECTRICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS (continued)
OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
MAX1606 toc01
VCC (V)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE vs. BATTERY VOLTAGE
MAX1606 toc02
VBATT (V)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE vs. LOAD CURRENT
MAX1606 toc03
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
Typical Operating Characteristics(VCC= 3.3V, VBATT= 3.6V, L1 = 10µH, SHDN= LIM = VCC, VOUT(NOM) = 18V (Figure 3), TA= +25°C, unless otherwise noted.)
Note 1:The MAX1606 requires a supply voltage between +2.4V and +5.5V; however, the input voltage (VBATT) used to power the
inductor can vary from +0.8V to 5.5V.
Note 2:Specifications to -40°C are guaranteed by design and not production tested.
MAX1606
28V Internal Switch LCDBias Supply
with True Shutdown
ELECTRICAL CHARACTERISTICS (continued)
MAX1606
28V Internal Switch LCDBias Supply
with True ShutdownEFFICIENCY vs. SUPPLY VOLTAGE
MAX1606 toc04
VCC (V)
EFFICIENCY (%)
EFFICIENCY vs. LOAD CURRENT
(L1 = 10µH)
MAX1606 toc06
LOAD CURRENT (mA)
EFFICIENCY (%)
ypical Operating Characteristics (continued)(VCC= 3.3V, VBATT= 3.6V, L1 = 10µH, SHDN= LIM = VCC, VOUT(NOM) = 18V (Figure 3), TA= +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
(L1 = 47µH)
MAX1607 toc07
LOAD CURRENT (mA)
EFFICIENCY (%)
EFFICIENCY vs. LOAD CURRENT
(L1 = 100µH)
MAX1607 toc08
LOAD CURRENT (mA)
EFFICIENCY (%)
PEAK INDUCTOR CURRENT LIMIT
vs. SUPPLY VOLTAGE
MAX1606 toc09
VCC (V)
CURRENT LIMIT (mA)
PEAK INDUCTOR CURRENT LIMIT
vs. BATTERY VOLTAGE
MAX1606 toc10
VBATT (V)
CURRENT LIMIT (mA)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1606 toc11
VCC (V)
ICC
(mA)
EFFICIENCY vs. BATTERY VOLTAGE
MAX1606 toc05
VBATT (V)
EFFICIENCY (%)
SUPPLY CURRENT
vs. LOAD CURRENT
MAX1606 toc12
LOAD CURRENT (mA)
ICC
(mA)
MAX1606
28V Internal Switch LCDBias Supply
with True Shutdown17.9V
18.1V
18VA
100µs/div
LINE TRANSIENTMAX1606 toc13
A: VBATT = VCC = 2.4V TO 5.5V, 2V/div
B: VOUT = 18V, ROUT = 3.6kΩ, 100mV/div
20V
10V
400µs/div
SHUTDOWN WAVEFORMMAX1606 toc15
A: VSHDN, 2V/div
B: VOUT, 10V/div, ROUT = 1.8kΩ
C: IL1, 500mA/div
Typical Operating Characteristics (continued)(VCC= 3.3V, VBATT= 3.6V, L1 = 10µH, SHDN= LIM = VCC, VOUT(NOM) = 18V (Figure 3), TA= +25°C, unless otherwise noted.)
