MAX4838EXT-T ,Overvoltage Protection Controllers with Status FLAGApplicationsTypical Operating CircuitCell PhonesDigital Still CamerasPDAs and Palmtop DevicesINPUTO ..
MAX483CPA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversFeaturesThe MAX481, MAX483, MAX485, MAX487–MAX491, and' In µMAX Package: Smallest 8-Pin SOMAX1487 a ..
MAX483CPA+ ,Low-Power, Slew-Rate-Limited RS-485/RS-422 TransceiversELECTRICAL CHARACTERISTICS(V = 5V ±5%, T = T to T , unless otherwise noted.) (Notes 1, 2)CC A MIN M ..
MAX483CSA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversApplicationsMAX481C/D 0°C to +70°C Dice*Industrial-Control Local Area NetworksOrdering Information ..
MAX483CSA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversApplications ______________Ordering InformationLow-Power RS-485 TransceiversPART TEMP. RANGE PIN-PA ..
MAX483CSA ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversApplications ______________Ordering InformationLow-Power RS-485 TransceiversPART TEMP. RANGE PIN-PA ..
MAX8880ETT ,12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POKELECTRICAL CHARACTERISTICS(V = V + 1V, SHDN = IN, C = 4.7µF, T = -40°C to +85°C, unless otherwise n ..
MAX8880ETT+ ,12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POKapplications with long standby periods. Unlike ♦ 200mA max Output CurrentPNP-based designs, a 2Ω PM ..
MAX8880ETT+T ,12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POKMAX8880/MAX888119-1679; Rev 2; 12/0712V, Ultra-Low-I , Low-DropoutQLinear Regulators with POK
MAX8880EUT+T ,12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POKApplicationsSmoke Detectors PDAs Handy TerminalsBattery-Powered AlarmsCMOS Backup PowerRemote Trans ..
MAX8880EUT-T ,12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POKELECTRICAL CHARACTERISTICS(V = V + 1V, SHDN = IN, C = 4.7µF, T = -40°C to +85°C, unless otherwise n ..
MAX8881EUT18+T ,12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POKFeaturesThe MAX8880/MAX8881 are ultra-low supply current,♦ 3.5µA Supply Current at 12Vlow-dropout l ..
MAX4838EXT-T
Overvoltage Protection Controllers with Status FLAG
General DescriptionThe MAX4838–MAX4841 are overvoltage protection ICs
that protect low-voltage systems against voltages of up
to 28V. If the input voltage exceeds the overvoltage trip
level, the MAX4838–MAX4841 turn off the low-cost
external N-channel FET(s) to prevent damage to the
protected components. An internal charge pump elimi-
nates the need for external capacitors and drives the
FET gate for a simple, robust solution.
The MAX4838/MAX4839 have a 7.4V overvoltage
threshold, and the MAX4840/MAX4841 have a 5.8V
overvoltage threshold. All devices have an undervolt-
age lockout threshold of 3.25V. In addition to the single
FET configuration, the devices can be configured with
back-to-back external FETs to prevent currents from
being back-driven into the adapter.
On power-up, the device waits for 50ms before driving
GATE high. FLAGis held low for an additional 50ms
after GATE goes high before deasserting. The
MAX4838/MAX4840 have an open-drain FLAGoutput,
and the MAX4839/MAX4841 have a push-pull FLAG
output. The FLAGoutput asserts immediately to an
overvoltage fault.
Additional features include a 15kV ESD-protected input
(when bypassed with a 1µF capacitor) and a shutdown
pin (EN) to turn off the device (MAX4838/MAX4840).
All devices are offered in a small 6-pin SC70 package
and are specified for operation from -40°C to +85°C.
ApplicationsCell Phones
Digital Still Cameras
PDAs and Palmtop Devices
MP3 Players
FeaturesOvervoltage Protection Up to 28VPreset 7.4V or 5.8V Overvoltage Trip LevelDrive Low-Cost NMOS FETInternal 50ms Startup DelayInternal Charge PumpUndervoltage Lockout15kV ESD-Protected InputVoltage Fault FLAGIndicator6-Pin SC70 Package
MAX4838–MAX4841
Overvoltage Protection Controllers with
Status FLAGypical Operating Circuit19-3044; Rev 0; 10/03
Pin Configuration appears at end of data sheet.
MAX4838–MAX4841
Overvoltage Protection Controllers with
Status FLAG
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VIN= +5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
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.
IN to GND ..............................................................-0.3V to +30V
GATE to GND ........................................................-0.3V to +12V
EN, FLAGto GND ....................................................-0.3V to +6V
Continuous Power Dissipation (TA= +70°C)
6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW
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
MAX4838–MAX4841
Overvoltage Protection Controllers with
Status FLAG
ELECTRICAL CHARACTERISTICS (continued)(VIN= +5V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
SUPPLY CURRENT vs. INPUT VOLTAGEMAX4838 toc01
INPUT VOLTAGE (V)
SUPPLY CURRENT (2015105
REVERSE CURRENT
vs. OUTPUT VOLTAGE
MAX4838 toc02
OUTPUT VOLTAGE (V)
REVERSE CURRENT (
GATE VOLTAGE vs. INPUT VOLTAGE
MAX4838 toc03
INPUT VOLTAGE (V)
GATE VOLTAGE (V)654
Typical Operating Characteristics(VIN= +5V, MAX4838; Si9936DY external MOSFET in back-to-back configuration; TA= +25°C, unless otherwise noted.)
Note 1:All parts are 100% tested at +25°C. Electrical limits across the full temperature range are guaranteed by design and
correlation.
MAX4838–MAX4841
Overvoltage Protection Controllers with
Status FLAGypical Operating Characteristics (continued)(VIN= +5V, MAX4838; Si9936DY external MOSFET in back-to-back configuration; TA= +25°C, unless otherwise noted.)
MAX4838–MAX4841
Overvoltage Protection Controllers with
Status FLAGFigure 1. Startup Timing Diagram
Figure 2. Shutdown Timing Diagram
Figure 3. Power-Up Overvoltage Timing Diagram
Figure 4. Disable Timing Diagram
MAX4838–MAX4841
Overvoltage Protection Controllers with
Status FLAG
