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MAX1982

Maxim
Part Number MAX1982
Manufacturer Maxim
Description Low-Dropout Linear Regulators
Published May 6, 2005
Detailed Description 19-2560; Rev 0; 7/02 KIT ATION EVALU E L B AVAILA Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply...
Datasheet PDF File MAX1982 PDF File

MAX1982
MAX1982

Overview
19-2560; Rev 0; 7/02 KIT ATION EVALU E L B AVAILA 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 applications 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.
o Low-Cost 1.
2V, 300mA VID Supply o ±3% Output Voltage Accuracy o No Minimum Load Current Required o 1.
25V to 5.
5V Input Supply Voltage o 5V Input Bias Supply Voltage o Power-Good (PGOOD) Open-Drain Output with 1ms Rising Edge Propagation Delay (MAX1982) o Adjustable Output Voltage (MAX1983) o Low Supply Current (IBIAS + IIN = 165µA typ) o 5µA (max) Shutdown Supply Current o Tiny 6-Pin SOT23 Package Features MAX1982/MAX1983 Applications Notebook Computers VID Power Supplies PDAs Cell Phones Low-Dropout Regulators with External Bias Supply Ordering Information PART MAX1982EUT-T MAX1983EUT-T TEMP RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 6 SOT23-6 6 SOT23-6 TOP MARK ABEA ABEB Typical Operating Circuit TOP VIEW 4.
5V TO 5.
5V BIAS IN 1.
25V TO 5.
5V 10µF Pin Configurations BIAS 1 GND 2 6 IN OUT PGOOD MAX1982 0.
1µF GND OUT MAX1982 5 4 1.
2V 10µF SHDN 3 ON SHDN OFF PGOOD PGOOD SOT23-6 Fixed Output Voltage 100kΩ BIAS 1 GND 2 SHDN 3 6 IN OUT ADJ MAX1983 5 4 SOT23-6 Adjustable Output ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Max...


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