MAX1976ETT150-T ,1.5 V, low-input-voltage, 300 mA LDO regulator with RESETELECTRICAL CHARACTERISTICS(V = (V + 0.5V) or 1.8V, whichever is greater; SHDN = IN, C = 1µF, C = 4. ..
MAX1976EZT085-T ,0.85 V, low-input-voltage, 300 mA LDO regulator with RESETfeatures include logic-controlled shutdown, Tiny 6-Pin Thin SOT23 Package (<1.1mm High)short-circu ..
MAX1976EZT180+T ,1.80 V, low-input-voltage, 300 mA LDO regulator with RESETFeaturesThe MAX1963/MAX1976 low-dropout linear regulators Low 1.62V Minimum Input Voltageoperate f ..
MAX1977EEI ,High-Efficiency / Quad Output / Main Power- Supply Controllers for Notebook Computersapplications. The MAX1999 provides a pin-selectableMAX1999EEI+ -40°C to +85°C 28 QSOP400kH z/500kH ..
MAX1977EEI+ ,High-Efficiency, Quad Output, Main Power-Supply Controllers for Notebook ComputersApplicationsPGOOD 2 27 LX3ON3 3 26 DH3Notebook and Subnotebook ComputersON5 4 25 LDO3PDAs and Mobil ..
MAX1977EEI+T ,High-Efficiency, Quad Output, Main Power-Supply Controllers for Notebook Computersfeatures a 200kHz/5V and 300kHz/3.3V200kH z/300kH z or MAX1999EEI -40°C to +85°C 28 QSOPSMPS for hi ..
MAX495ESA+ ,Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op AmpsApplicationsMAX492C/D 0°C to +70°C Dice*Portable Equipment MAX492EPA -40°C to +85°C 8 Plastic DIPBa ..
MAX495ESA-T ,Single/Dual/Quad, Micropower, Single-Supply, Rail-to-Rail Op AmpsFeatures♦ Low-Voltage Single-Supply Operation (+2.7V to +6V)The dual MAX492, quad MAX494, and singl ..
MAX496 ,375MHz Quad Closed Loop Video Buffers, Av = +1 and +2Applications♦ Low Distortion: 64dBc (f = 10MHz)Computer Workstations♦ Directly Drives 50Ω or 75Ω B ..
MAX4968ECM+ ,16-Channel, Linear, High-Voltage Analog SwitchesApplicationsMedical Ultrasound ImagingNondestructive Testing (NDT)/Industrial Ultrasound ImagingPri ..
MAX496CSE ,375MHz Quad Closed-Loop Video Buffers, AV = +1 and +2General Description ________
MAX497CPE ,375MHz Quad Closed-Loop Video Buffers, AV = +1 and +2ELECTRICAL CHARACTERISTICS(V = +5V, V = -5V, V = 0V, R = 150Ω, T = T to T , unless otherwise noted. ..
MAX1963EZT120-T-MAX1976ETT150-T-MAX1976EZT085-T-MAX1976EZT180+T
0.75 V, low-input-voltage, 300 mA LDO regulator with RESET
General DescriptionThe MAX1963/MAX1976 low-dropout linear regulators
operate from a +1.62V to +3.6V supply and deliver a
guaranteed 300mA continuous load current with a low
100mV dropout. The high-accuracy (±0.5%) output
voltage is preset to an internally trimmed voltage in the
+0.75V to +3.0V range. An active-low, open-drain reset
output remains asserted for at least 2.2ms (MAX1963)
or 70ms (MAX1976) after the output voltage reaches
regulation. These devices are offered in 6-pin thin
SOT23 and 6-pin 3mm x 3mm thin DFN packages.
An internal PMOS pass transistor allows the low supply
current to remain independent of load and dropout volt-
age, making these devices ideal for portable battery-pow-
ered equipment such as personal digital assistants
(PDAs), cell phones, cordless phones, and notebook com-
puters. Other features include logic-controlled shutdown,
short-circuit protection, and thermal-overload protection.
ApplicationsNotebook Computers
Cellular and PCS Telephones
Personal Digital Assistants (PDAs)
Hand-Held Computers
Digital Cameras
PCMCIA Cards
CD and MP3 Players
FeaturesLow 1.62V Minimum Input VoltageGuaranteed 300mA Output Current±1.5% Accuracy Over Load/Line/TempLow 100mV Dropout at 300mA Load2.2ms (MAX1963) or 70ms (MAX1976) RESET
Output FlagSupply Current Independent of Load and
Dropout VoltageLogic-Controlled ShutdownThermal-Overload and Short-Circuit ProtectionPreset Output Voltages (0.75V to 3.0V)Tiny 6-Pin Thin SOT23 Package (<1.1mm High)Thin 6-Pin TDFN Package (<0.8mm High)
MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with RESETin SOT and TDFN
Ordering Information19-3040; Rev 0; 10/03
Pin Configurations*Insert the desired three-digit suffix (see the Selector Guide) into
the blanks to complete the part number. Contact the factory for
other output voltages.
Selector Guide appears at end of data sheet.ypical Operating Circuit
MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with RESETin SOT and TDFN
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, 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, SHDN, RESETto GND.....................................-0.3V to +4.0V
OUT to GND................................................-0.3V to (VIN+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
6-Pin TDFN (derate 24.4mW/°C above +70°C).........1951mW
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
MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with RESETin SOT and TDFN
Note 2:The dropout voltage is defined as VIN- VOUT, when VOUTis 4% lower than the value of VOUTwhen VIN = VOUT+ 0.5V.
Typical Operating Characteristics(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with RESETin SOT and TDFN
GROUND-PIN CURRENT
vs. LOAD CURRENTMAX1963/76 toc04
LOAD CURRENT (mA)
GROUND-PIN CURRENT (
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
MAX1963/76 toc05
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX1963/76 toc06
TEMPERATURE (°C)
GROUND-PIN CURRENT (40200-20
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1963/76 toc07
LOAD CURRENT (mA)
DROPOUT
(mV)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX1963/76 toc08
FREQUENCY (kHz)
PSRR (dB)
LINE-TRANSIENT RESPONSE
MAX1963/76 toc09
40µs/div
VIN500mV/div
1.5V
10mV/div
AC-COUPLED
VOUT
3.5V
Typical Operating Characteristics (continued)(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= +25°C, unless otherwise noted.)
MAX1963/MAX1976
Low-Input-Voltage, 300mA LDO Regulators
with RESETin SOT and TDFN
LOAD-TRANSIENT RESPONSEMAX1963/76 toc11
20µs/div
200mA/div
20mV/div
AC-COUPLED
200mA
VOUT
IOUT
20mA
VIN = 3.6V
VOUT = 1.5V
LOAD-TRANSIENT RESPONSE
NEAR DROPOUTMAX1963/76 toc12
20µs/div
200mA/div
20mV/div
AC-COUPLED
200mA
VOUT
VIN = 1.8V
VOUT = 1.5V
IOUT
20mA
ypical Operating Characteristics (continued)(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= +25°C, unless otherwise noted.)
MAX1963/MAX1976
Detailed DescriptionThe MAX1963/MAX1976 are low-dropout, high-accuracy,
low-quiescent-current linear regulators designed primarily
for battery-powered applications. These devices supply
loads up to 300mA and are available with preset output
voltages from +0.75V to +3.0V. As illustrated in Figure 1,
the MAX1963/MAX1976 consist of a reference, an error
amplifier, a P-channel pass transistor, an internal feed-
back voltage-divider, and a power-good comparator.
The reference is connected to the error amplifier, which
compares this reference with the feedback voltage and
amplifies the difference. If the feedback voltage is
lower than the reference voltage, the pass-transistor
gate is pulled lower, which allows more current to pass
to the output and increases the output voltage. If the
feedback voltage is too high, the pass-transistor gate is
pulled up, allowing less current to pass to the output.
Low-Input-Voltage, 300mA LDO Regulators
with RESETin SOT and TDFN
Pin DescriptionFigure 1. Functional Diagram
