MAX608ESA ,5V or Adjustable, Low-Voltage, Step-Up DC-DC ControllerFeaturesThe MAX608 low-voltage step-up controller operates' 1.8V to 16.5V Input Rangefrom a 1.8V to ..
MAX608ESA ,5V or Adjustable, Low-Voltage, Step-Up DC-DC ControllerELECTRICAL CHARACTERISTICS(V = 5V, I = 0mA, T = -40°C to +85°C where indicated. T = -25°C to +85°C ..
MAX608ESA ,5V or Adjustable, Low-Voltage, Step-Up DC-DC ControllerApplicationsMAX608C/D 0°C to +70°C Dice*Positive LCD-Bias GeneratorsMAX608EPA -40°C to +85°C 8 Plas ..
MAX608ESA ,5V or Adjustable, Low-Voltage, Step-Up DC-DC Controllerapplications (chip supply connect-ed to input voltage), refer to the pin-compatibleMAX1771. The MAX ..
MAX608ESA+ ,5V or Adjustable, Low-Voltage, Step-Up DC-DC ControllerELECTRICAL CHARACTERISTICS(V = 5V, I = 0mA, T = -40°C to +85°C where indicated. T = -25°C to +85°C ..
MAX608ESA-T ,5V or Adjustable, Low-Voltage, Step-Up DC-DC ControllerApplicationsMAX608C/D 0°C to +70°C Dice*Positive LCD-Bias GeneratorsMAX608EPA -40°C to +85°C 8 Plas ..
MAZS033 ,Small-signal deviceAbsolute Maximum Ratings T = 25°CaParameter Symbol Rating UnitRepetitive peak forward current I 20 ..
MAZS047 ,Small-signal deviceFeatures0.01±0.01• SS-Mini type 2-pin package (SSMini2-F1)• Low noise type2• V rank classified(V = ..
MAZS0510H ,Silicon planar typeZener DiodesMAZS000 SeriesSilicon planar typeUnit : mmFor constant voltage, constant-current, wavef ..
MAZS0510M ,Silicon planar typeFeatures•SS-mini type 2-pin package•Low noise type•V rank classified (V = 2.4 V to 39 V)Z Z
MAZS0510-M ,Silicon planar typeElectrical characteristics within part numbers T = 25°CaTemperature coefficientZener voltage Rever ..
MAZS0560M ,Silicon planar typeElectrical Characteristics T = 25°Ca Parameter Symbol Conditions Min Typ Max UnitForward voltage V ..
MAX608EPA-MAX608ESA
5V or Adjustable, Low-Voltage, Step-Up DC-DC Controller
_______________General DescriptionThe MAX608 low-voltage step-up controller operates
from a 1.8V to 16.5V input voltage range. Pulse-fre-
quency-modulation (PFM) control provides high effi-
ciency at heavy loads, while using only 85µA (typical)
when operating with no load. In addition, a logic-con-
trolled shutdown mode reduces supply current to 2µA
typical. The output voltage is factory-set at 5V or can be
adjusted from 3V to 16.5V with an external resistor
divider.
The MAX608 is ideal for two- and three-cell battery-
powered systems. An operating frequency of up to
300kHz allows use with small surface-mount compo-
nents.
The MAX608 operates in “bootstrapped” mode only
(with the chip supply, OUT, connected to the DC-DC
output). For a 12V output without external resistors, or
for nonbootstrapped applications (chip supply connect-
ed to input voltage), refer to the pin-compatible
MAX1771. The MAX608 is available in 8-pin DIP and
SO packages.
________________________ApplicationsHigh-Efficiency DC-DC Converters
Battery-Powered Applications
Positive LCD-Bias Generators
Portable Communicators
____________________________Features1.8V to 16.5V Input Range85% Efficiency for 30mA to 1.5A Load CurrentsUp to 10W Output Power110µA Max Supply Current5µA Max Shutdown CurrentPreset 5V or Adjustable Output (3V to 16.5V)Current-Limited PFM Control SchemeUp to 300kHz Switching FrequencyEvaluation Kit Available
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller
________________________________________________________________Maxim Integrated Products1
__________________Pin Configuration
__________Typical Operating Circuit
Call toll free 1-800-998-8800 for free samples or literature.19-0438; Rev 0; 9/95
* Contact factory for dice specifications.
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGSSupply Voltage
OUT to GND.............................................................-0.3V, 17V
EXT, CS, REF, SHDN, FB to GND...............-0.3V, (VOUT+ 0.3V)
GND to AGND.............................................................0.1V, -0.1V
Continuous Power Dissipation (TA= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C)............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°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.
ELECTRICAL CHARACTERISTICS(VOUT= 5V, ILOAD= 0mA, TA= -40°C to +85°C where indicated. TA= -25°C to +85°C for all other limits. Typical values are at = +25°C.)
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller3SUPPLY CURRENT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
SUPPLY CURRENT (2345
MAX608-06101001000
EFFICIENCY vs. LOAD CURRENT
(VOUT = 12V)MAX608-02
LOAD CURRENT (mA)
EFFICIENCY (%)
ELECTRICAL CHARACTERISTICS (continued)(VOUT= 5V, ILOAD= 0mA, TA= -40°C to +85°C where indicated. TA= -25°C to +85°C for all other limits. Typical values are at = +25°C.)
Note 1:Limits over this temperature range are guaranteed by design.
Note 2: The MAX608 must be operated in bootstrapped mode with OUT connected to the DC-DC circuit output. The minimum outputvoltage set point is +3V.
Note 3:Output voltage guaranteed using preset voltages. See Figures 4a–4d for output current capability versus input voltage.
Note 4: Output voltage line and load regulation depend on external circuit components.
Note 5:Operation in the external-feedback mode is guaranteed to be accurate to the VFBtrip level, and does not include resistor tolerance.
__________________________________________Typical Operating Characteristics(TA = +25°C, unless otherwise noted.)
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)(TA = +25°C, unless otherwise noted.)
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller
_______________________________________________________________________________________5
____________________________Typical Operating Characteristics (continued)(TA = +25°C, unless otherwise noted.)
MAX608
5V or Adjustable, Low-Voltage,
Step-Up DC-DC Controller_______________________________________________________________________________________
______________________________________________________________Pin DescriptionFigure 1. Functional Diagram
