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MAX1935ETAN/a2500avai500mA, Low-Voltage Linear Regulator in Tiny QFN
MAX1935ETAMAXN/a300avai500mA, Low-Voltage Linear Regulator in Tiny QFN
MAX1935ETAMAXIMN/a2573avai500mA, Low-Voltage Linear Regulator in Tiny QFN


MAX1935ETA ,500mA, Low-Voltage Linear Regulator in Tiny QFNApplications 8 Thin QFNMAX1935ETA* -40°C to +85°CNotebook Computers3mm x 3mmCellular and Cordless T ..
MAX1935ETA ,500mA, Low-Voltage Linear Regulator in Tiny QFNFeaturesThe MAX1935 low-dropout linear regulator operates Guaranteed 500mA Output Currentfrom a 2. ..
MAX1935ETA ,500mA, Low-Voltage Linear Regulator in Tiny QFNELECTRICAL CHARACTERISTICS(V = V + 500mV or V = 2.25V whichever is greater, SET = GND, SHDN = IN, T ..
MAX1935ETA+ ,500mA, Low-Voltage Linear Regulator in Tiny QFNELECTRICAL CHARACTERISTICS(V = V + 500mV or V = 2.25V whichever is greater, SET = GND, SHDN = IN, T ..
MAX1935ETA+T ,500mA, Low-Voltage Linear Regulator in Tiny QFNApplications 8 Thin QFNMAX1935ETA* -40°C to +85°CNotebook Computers3mm x 3mmCellular and Cordless T ..
MAX1935ETA+T ,500mA, Low-Voltage Linear Regulator in Tiny QFNFeaturesThe MAX1935 low-dropout linear regulator operates♦ Guaranteed 500mA Output Currentfrom a 2. ..
MAX489EESD+ ,±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 TransceiversApplicationsMAX481EESA -40°C to +85°C 8 SOIndustrial-Control Local Area Networks MAX483ECPA 0°C to ..
MAX489EESD+T ,±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 TransceiversApplications:state. The receiver input has a fail-safe feature that guar-MAX3440E–MAX3444E: ±15kV E ..
MAX489EPD ,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 ..
MAX489EPD+ ,±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 TransceiversApplications:EMI and reduce reflections caused by improperly termi-MAX3460–MAX3464: +5V, Fail-Safe, ..
MAX489ESD ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversMAX481/MAX483/MAX485/MAX487–MAX491/MAX148719-0122; Rev 5; 2/96Low-Power, Slew-Rate-LimitedRS-485/RS ..
MAX489ESD ,Low-Power / Slew-Rate-Limited RS-485/RS-422 TransceiversApplications ______________Ordering InformationLow-Power RS-485 TransceiversPART TEMP. RANGE PIN-PA ..


MAX1935ETA
500mA, Low-Voltage Linear Regulator in Tiny QFN
General Description
The MAX1935 low-dropout linear regulator operates
from a 2.25V to 5.5V supply and delivers a guaranteed
500mA load current with low 175mV dropout. The high-
accuracy (±1.5%) output voltage is preset at an inter-
nally trimmed voltage or can be adjusted from 0.8V to
4.5V with an external resistive-divider.
An internal PMOS pass transistor allows low 210µA
supply current, making this device ideal for portable
equipment such as personal digital assistants (PDAs),
cellular phones, cordless phones, and other equip-
ment, including base stations and docking stations.
Other features include an active-low, power-OK output
that indicates when the output is out of regulation, a
0.02µA shutdown mode, short-circuit protection, and
thermal-shutdown protection. The MAX1935 comes in a
tiny 1.9W, 8-pin 3mm x 3mm thin QFN package.
Applications

Notebook Computers
Cellular and Cordless Telephones
PDAs
Palmtop Computers
Base Stations
USB Hubs
Docking Stations
Features
Guaranteed 500mA Output CurrentOutput Down to 0.8VLow 175mV Dropout at 500mA±1.5% Output Voltage Accuracy
Preset at 1.5V
Adjustable from 0.8V to 4.5V
Power-OK OutputLow 210µA Ground Current 0.02µA Shutdown CurrentThermal-Overload ProtectionOutput Current LimitTiny 1.9W, 8-Pin 3mm x 3mm Thin QFN Package
MAX1935
500mA, Low-Voltage Linear Regulator
in Tiny QFN
Pin Configuration
Ordering Information
Typical Operating Circuit

19-2599; Rev 0; 10/02
Selector Guide

*Contact factory for preset output voltages.
MAX1935
500mA, Low-Voltage Linear Regulator
in Tiny QFN
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VIN= VOUT(SETPOINT)+ 500mV or VIN= 2.25V whichever is greater, SET = GND, SHDN= IN, TA= 0°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°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.
IN, SHDN, POK, SET to GND...................................-0.3V to +6V
OUT to GND................................................-0.3V to (VIN+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA= +70°C)
8-Pin Thin QFN (derate 24.4mW/°C above +70°C).......1.95W
Operating Temperature.......................................-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, Inc.
MAX1935
500mA, Low-Voltage Linear Regulator
in Tiny QFN
ELECTRICAL CHARACTERISTICS (continued)

(VIN= VOUT(SETPOINT)+ 500mV or VIN= 2.25V whichever is greater, SET = GND, SHDN= IN, TA= 0°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS

(VIN= VOUT(SETPOINT)+ 500mV or VIN= 2.25V whichever is greater, SET = GND, SHDN= IN, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 2)
MAX1935
500mA, Low-Voltage Linear Regulator
in Tiny QFN
ELECTRICAL CHARACTERISTICS (continued)

(VIN= VOUT(SETPOINT)+ 500mV or VIN= 2.25V whichever is greater, SET = GND, SHDN= IN, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 2)
For 2.25V ≤VOUT≤4V, dropout voltage limits are linearly interpolated from the values listed. For VOUT< 4V, dropout
voltage limit is equal to the value for VOUT= 4V.
Note 2:
Specifications to -40°C are guaranteed by design, not production tested.ypical Operating Characteristics
(VOUT= 3.3V, VIN= VOUT+ 500mV, SHDN= IN, CIN= 1µF, COUT= 10µF, TA= +25°C, unless otherwise noted.)
MAX1935
500mA, Low-Voltage Linear Regulator
in Tiny QFN
Typical Operating Characteristics (continued)

(VOUT= 3.3V, VIN= VOUT+ 500mV, SHDN= IN, CIN= 1µF, COUT= 10µF, TA= +25°C, unless otherwise noted.)
MAX1935
500mA, Low-Voltage Linear Regulator
in Tiny QFN
Pin Description
LINE-TRANSIENT RESPONSE

MAX1935 toc15
VIN
1V/div
VOUT
10mV/div
MAX1935 toc16
20µs/div
VOUT
1V/div
VSHDN
1V/div
Typical Operating Characteristics (continued)

(VOUT= 3.3V, VIN= VOUT+ 500mV, SHDN= IN, CIN= 1µF, COUT= 10µF, TA= +25°C, unless otherwise noted.)
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