MAX1982EUT-T ,Low-Voltage / Low-Dropout Linear Regulators with External Bias SupplyApplications Tiny 6-Pin SOT23 PackageNotebook ComputersVID Power SuppliesOrdering InformationPDAsC ..
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MAX1983EUT+T ,Low-Voltage, Low-Dropout Linear Regulators with External Bias SupplyELECTRICAL CHARACTERISTICS(Circuit of Figure 3, V = 1.8V, I = 1mA, C = 10µF, T = 0°C to +85°C, unle ..
MAX1983EUT-T ,Low-Voltage, Low-Dropout Linear Regulators with External Bias SupplyApplications Tiny 6-Pin SOT23 PackageNotebook ComputersVID Power SuppliesOrdering InformationPDAsC ..
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MAX5014ESA ,Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power SuppliesApplicationsTelecom Power SuppliesV VIN OUTIndustrial Power SuppliesV+Networking Power SuppliesVDDI ..
MAX5014ESA ,Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power SuppliesFeaturesThe MAX5014/MAX5015 integrate all the building Wide Input Range: (18V to 110V) or (13V to ..
MAX5014ESA+ ,Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power SuppliesELECTRICAL CHARACTERISTICS(V = 13V, a 10µF capacitor connects V to GND, V = 0, V+ = 48V, 0.1µF capa ..
MAX1982EUT-T
Low-Voltage / Low-Dropout Linear Regulators with External Bias Supply
General DescriptionThe MAX1982/MAX1983 are low-voltage, low-dropout
linear regulators with an external bias supply input. The
5V bias supply drives the gate of the internal N-channel
pass transistor, making these devices ideal for applica-
tions that require low-voltage outputs from low-voltage
inputs. The MAX1982 delivers 1.2V (±3%) at 300mA
from an input voltage of 1.25V to 5.5V. The MAX1983
delivers an adjustable output voltage from 0.8V to 2V.
The MAX1982/MAX1983 include a current-limit and
thermal shutdown that protects the regulator in the
event of a fault condition. Both devices are offered in a
6-pin SOT23 package and are specified over the
extended (-40°C to +85°C) temperature range.
ApplicationsNotebook Computers
VID Power Supplies
PDAs
Cell Phones
Low-Dropout Regulators with External Bias
Supply
FeaturesLow-Cost 1.2V, 300mA VID Supply±3% Output Voltage AccuracyNo Minimum Load Current Required1.25V to 5.5V Input Supply Voltage5V Input Bias Supply VoltagePower-Good (PGOOD) Open-Drain Output with
1ms Rising Edge Propagation Delay (MAX1982)Adjustable Output Voltage (MAX1983)Low Supply Current (IBIAS+ IIN= 165µA typ)5µA (max) Shutdown Supply CurrentTiny 6-Pin SOT23 Package
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
Pin Configurations
Ordering Information
Typical Operating Circuit19-2560; Rev 0; 7/02
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(Circuit of Figure 3, VIN= 1.8V, ILOAD= 1mA, CLOAD= 10µF, TA
= 0°C to +85°C,unless otherwise noted. Typical values are at = +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.
ADJ, IN, BIAS, PGOOD, SHDN, OUT to GND..........-0.3V to +6V
Output Short-Circuit Duration............................................Infinite
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 8.7mW/oC above +70°C)............696mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65oC to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
ELECTRICAL CHARACTERISTICS (continued)(Circuit of Figure 3, VIN= 1.8V, ILOAD= 1mA, CLOAD= 10µF, TA
= 0°C to +85°C, unless otherwise noted. Typical values are at
ELECTRICAL CHARACTERISTICS
Typical Operating Characteristics(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
ELECTRICAL CHARACTERISTICS (continued)
Note 2:VOUT is 1.2V for MAX1982. For MAX1983 VOUTis set to 1.2V with circuit of Figure 4.
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
INPUT CURRENT vs. TEMPERATUREMAX1982/83 toc04
TEMPERATURE (°C)
IIN3510-15
BIAS SUPPLY CURRENT vs. TEMPERATURE
MAX1982/83 toc05
TEMPERATURE (°C)
IBIAS3510-15
DROPOUT VOLTAGE vs. OUTPUT CURRENT
MAX1982/83 toc06
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
OUTPUT VOLTAGE ERROR
vs. OUTPUT CURRENT
MAX1982/83 toc07
OUTPUT CURRENT (mA)
OUT
ERROR (%)
OUTPUT VOLTAGE ERROR vs. TEMPERATURE
MAX1982/83 toc08
TEMPERATURE (°C)
RELATIVE V
OUT
ERROR (%)35-1510
SHORT-CIRCUIT CURRENT LIMIT
vs. INPUT VOLTAGE
MAX1982/83 toc09
INPUT VOLTAGE (V)
SHORT-CIRCUIT CURRENT LIMIT (mA)
POWER-SUPPLY REJECTION RATIO (VIN)
vs. FREQUENCY
MAX1982/83 toc11
FREQUENCY (Hz)
PSRR (dB)
100k10k1k100
-1001M
SHORT-CIRCUIT CURRENT LIMIT
vs. TEMPERATUREMAX1982/83 toc10
TEMPERATURE (°C)
SHORT-CIRCUIT CURRENT LIMIT (mA)3510-15
Typical Operating Characteristics (continued)
(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)
MAX1982/MAX1983
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
Typical Operating Characteristics (continued)(Circuit of Figure 3, TA = +25°C, unless otherwise noted.)
