MAX1982EUT+T-MAX1983EUT+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1983EUT+T ,Low-Voltage, Low-Dropout Linear Regulators with External Bias SupplyFeaturesThe MAX1982/MAX1983 are low-voltage, low-dropout ♦ Low-Cost 1.2V, 300mA VID Supplylinear re ..
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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MAX1989MEE ,Multichannel Remote/Local Temperature SensorsGeneral Description ________
MAX1989MEE ,Multichannel Remote/Local Temperature SensorsFeaturesThe MAX1668/MAX1805/MAX1989 are precise multi- Multichannelchannel digital thermometers th ..
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 ..
MAX5014ESA+T ,Current-Mode PWM Controllers with Integrated Startup Circuit for Isolated Power SuppliesApplicationsTelecom Power SuppliesV VIN OUTIndustrial Power SuppliesV+Networking Power SuppliesVDDI ..
MAX5015CSA ,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 ..
MAX5015ESA ,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-MAX1983EUT+T
Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
General Description
The 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.
Applications
Notebook 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
GND
PGOODSHDNINOUT
BIAS
MAX1982
SOT23Fixed Output Voltage
TOP VIEW
GND
ADJSHDNINOUT
BIAS
MAX1983
SOT23Adjustable Output
Pin Configurations
Ordering Information
0.1μF
BIAS
GND
SHDN
OFF
OUT
PGOOD
PGOOD
100kΩ
10μF
10μF
4.5V TO 5.5V1.25V TO 5.5V
1.2V
MAX1982
Typical Operating Circuit
19-2560; Rev 1; 10/08
EVALUATION KIT
AVAILABLE
PARTTEMP RANGEPIN-
PACKAGE
TOP
MARK
MAX1982EUT-T-40°C to +85°C 6 SOT23-6 ABEA
MAX1983EUT-T-40°C to +85°C 6 SOT23-6 ABEB
MAX1982EUT+T-40°C to +85°C 6 SOT23-6 ABEA+
MAX1983EUT+T-40°C to +85°C 6 SOT23-6 ABEB+
+Denotes lead(Pb)-free package/RoHS-compliant package.
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
PARAMETERSYM B O L CONDITIONSMINTYPMAXUNITS
Input VoltageVIN1.255.5V
BIAS VoltageVBIAS4.55.5V
VOUT Voltage RangeVOUTMAX19830.82.0V
BIAS Input Undervoltage Lockout3.84.14.35V
Shutdown Supply CurrentIIN1.25V < VIN < 5.5V15µA
Quiescent BIAS CurrentIQ4.5V < VBIAS < 5.5V140250µA
Shutdown BIAS CurrentI SHDN4.5V < VBIAS < 5.5V15µA
MAX1982: VIN = open, VOUT = 1.20V30VOUT Input Bias CurrentMAX1983: VIN = open, 0.8V < VOUT < 2.0V2µA
MAX1983 ADJ Input Current0V < VADJ < 2.0V1µA
REGULATOR CHARACTERISTICS
Line RegulationΔVOUT/
ΔVINILOAD = 10mA, 1.5V < VIN < 5.5V-0.15+0.15%/V
TA = +25°C, IOUT = 100mA-1+1
MAX1982 1.20V
Output Voltage AccuracyVOUTTA = 0°C to +85°C, IOUT = 1mA to 300mA,
VOUT + 0.5V < VIN < 5.5V-3+3%
TA = +25°C, IOUT = 100mA-1+1
MAX1983 0.80V
Output Voltage AccuracyVOUTTA = 0°C to +85°C, IOUT = 1mA to 300mA,
VOUT + 0.5V < VIN < 5.5V-3+3%
ILOAD = 300mA350Dropout VoltageVDOILOAD = 150mA175mV
Current LimitILIMVIN - VOUT = 1.3V3306001400mA
Thermal-Shutdown TemperatureT SHDN160°C
Thermal-Shutdown Hysteresis20°C
RMS Output Noise10Hz to 100kHz65µVRMS
PGOOD COMPARATOR
Comparator Threshold% of regulated output voltage-12.5-9-6%
Comparator HysteresisVHYST10mV
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 = +25°C.) (Note 1)
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 3, VIN= 1.8V, ILOAD= 1mA, CLOAD= 10µF, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETERSYM B O L CONDITIONSMINTYPMAXUNITS
LOGIC AND I/O
SHDN Input High VoltageVIH2.4V
SHDN Input Low VoltageVIL0.8V
SHDN Input Current-1+1µA
PGOOD Output Low VoltagePGOOD sinking 1mA0.1V
PGOOD Output
High Leakage Current0 < VPGOOD < VIN-1+1µA
DYNAMICS
Positive Load SteptRISEILOAD = 1mA to full load, CLOAD = 10µF10µs
Negative Load SteptFALLILOAD = full load to 1mA, CLOAD = 10µF50µs
Ripple Rejection at VIN10Hz < f < 10kHz, ILOAD = 300mA,
CLOAD = 10µF-60dB
Startup Response TimetONILOAD = 300mA, CLOAD = 10µF, 0% to 90%
of nominal output voltage100µs
Startup OvershootILOAD = 300mA, CLOAD = 10µF0.5%
Falling edge, 3mV under trip threshold10µsPGOOD Propagation DelaytPDRising edge within 5% of regulation level14ms
PARAMETERSYM B O L CONDITIONSMINMAXUNITS
Input VoltageVIN1.255.5V
BIAS VoltageVBIAS4.55.5V
VOUT Voltage RangeVOUTMAX19830.82.0V
BIAS Input Undervoltage Lockout3.84.2V
Shutdown Supply CurrentIIN1.25V < VIN < 5.5V5µA
Quiescent BIAS CurrentIQ4.5V < VBIAS < 5.5V250µA
Shutdown BIAS CurrentI SHDN4.5V < VBIAS < 5.5V5µA
MAX1982: VIN = open, VOUT = 1.20V30VOUT Input Bias CurrentMAX1983: VIN = open, 0.8V < VOUT < 2.0V2µA
REGULATOR CHARACTERISTICS
Line RegulationΔVOUT/
ΔVINILOAD = 10mA, 1.5V < VIN < 5.5V-0.15+0.15%/V
MAX1982 1.20V
Output Voltage AccuracyVOUTIOUT = 1mA to 300mA,
VOUT + 0.5V < VIN < 5.5V-3+3%
INPUT CURRENT vs. INPUT VOLTAGE
MAX1982/83 toc01
INPUT VOLTAGE (V)
INPUT CURRENT (
VBIAS = 5V
BIAS INPUT CURRENT
vs. INPUT VOLTAGE
MAX1982/83 toc02
INPUT VOLTAGE (V)
BIAS INPUT CURRENT (
VBIAS = 5V
GROUND CURRENT vs. OUTPUT CURRENT
MAX1982/83 toc03
OUTPUT CURRENT (mA)
GROUND CURRENT (
VBIAS = 5V
VIN = 1.8V
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)
(Circuit of Figure 3, VIN= 1.8V, VOUT= 1.2V, ILOAD= 1mA, CLOAD= 10µF, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETERSYM B O L CONDITIONSMINMAXUNITS
MAX1983 0.80V
Output Voltage AccuracyVOUTIOUT = 1mA to 300mA,
VOUT + 0.5V < VIN < 5.5V-3+3%
ILOAD = 300mA350Dropout VoltageVDOILOAD = 150mA175mV
Current LimitILIMVIN - VOUT = 1.3V3301400mA
PGOOD COMPARATOR
Comparator Threshold% of regulated output voltage-12.5-6%
LOGIC AND I/O
SHDN Input High VoltageVIH2.4V
SHDN Input Low VoltageVIL0.8V
SHDN Input Current-1+1µA
PGOOD Output Low VoltagePGOOD sinking 1mA0.1V
PGOOD Output High Leakage
Current0 < VPGOOD < VIN-1+1µA
DYNAMICS
PGOOD Propagation DelaytPDRising edge within 5% of regulation level14ms
Note 1:Specifications over temperature are guaranteed by design, not production tested.
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. TEMPERATURE
MAX1982/83 toc04
TEMPERATURE (°C)
IIN3510-15
VBIAS = 5V
BIAS SUPPLY CURRENT vs. TEMPERATURE
MAX1982/83 toc05
TEMPERATURE (°C)
IBIAS3510-15
VBIAS = 5V
DROPOUT VOLTAGE vs. OUTPUT CURRENT
MAX1982/83 toc06
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
VBIAS = 5V
OUTPUT VOLTAGE ERROR
vs. OUTPUT CURRENT
MAX1982/83 toc07
OUTPUT CURRENT (mA)
OUT
ERROR (%)
VBIAS = 5V
VIN = 1.8V
OUTPUT VOLTAGE ERROR vs. TEMPERATURE
MAX1982/83 toc08
TEMPERATURE (°C)
RELATIVE V
OUT
ERROR (%)35-1510
VIN = 1.8V
ILOAD = 300mA
ILOAD = 200mA
ILOAD = 0mA
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
VIN = 2.1V
VP-P = 0.6V
ILOAD = 0
SHORT-CIRCUIT CURRENT LIMIT
vs. TEMPERATURE
MAX1982/83 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.)
POWER-SUPPLY REJECTION RATIO (VBIAS)
vs. FREQUENCY
MAX1982/83 toc12
FREQUENCY (Hz)
PSRR (dB)
100k10k1k100
-1001M
VBIAS = 5V
VP-P = 0.6V
ILOAD = 0
RIPPLE REJECTION RATIO (VIN)
vs. FREQUENCY
MAX1982/83 toc13
FREQUENCY (Hz)
PSRR (dB)
100k10k1k100
-1001M
VIN = 3V
VP-P = 0.4V
IL = 300mA
IL = 200mA
IL = 100mA
LINE TRANSIENT (NO LOAD)
MAX1982/83 toc14
100μs/div
2.4V
1.8V
1mV/div
VOUT
VIN
500mV/
div
1mV/
div
LOAD TRANSIENT (1mA TO 300mA)
MAX1982/83 toc15
10μs/div
300mA
ILOAD
VOUT
200mA/
div
10mV/
div
LOAD TRANSIENT (300mA TO 1mA)
MAX1982/83 toc16
10μs/div
300mA
ILOAD
VOUT
200mA/
div
10mV/
div
LOAD TRANSIENT IN DROPOUT
MAX1982/83 toc17
20μs/div
300mA
ILOAD
VOUT
200mA/
div
50mV/
div
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.)
PGOOD RESPONSE
MAX1982/83 toc20
1ms/div
VPGOOD
VOUT2V/
div
500mV/
div
UNDERVOLTAGE LOCKOUT
MAX1982/83 toc18
100μs/div
1.2V
VOUT
VBIAS2V/
div
500mV/
div
ILOAD = 300mA
SHUTDOWN RESPONSE
MAX1982/83 toc19
100μs/div
VOUT
2V/
div
500mV/
div
ILOAD = 300mA
VSHDN

Partno	Mfg	Dc	Qty	Available	Descript
MAX1982EUT+T \|MAX1982EUTT	MAXIM	N/a	139	avai	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
MAX1983EUT+T \|MAX1983EUTT	MAXIM	N/a	2696	avai	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
MAX1983EUT+T \|MAX1983EUTT	MAX	N/a	2111	avai	Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply