MEMORY存储芯片MAX1615EUK+T中文规格书
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M A X 1615/M A X 1616ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V IN = 15V, SHDN = V IN , I LOAD = 5µA, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 2)
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 to GND.................................................................-0.3V to 30V Terminal Voltages to GND SHDN to GND...........................................-0.3V to (V IN + 0.3V)5/3to GND ............................................-0.3V to (V OUT + 0.3V)FB (MAX1616) to GND .........................-0.3V to (V OUT + 0.3V)OUT to GND...........................................................-0.3V to 30V OUT Short-Circuit to GND...............................................30sec Continuous OUT Current.....................................................40mA Continuous Power Dissipation (T A = +70°C) (Note 1)SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW Operating Temperature Range MAX161_EUK-T ...............................................-40°C to +85°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10s).................................+300°C
Note 1:See Operating Region and Power Dissipation section.找MEMORY 、二三极管上美光存储
_______________Detailed Description The MAX1615/MAX1616 low-quiescent-current linear regulators are designed primarily for high input voltage applications. The MAX1615 supplies a preselected 3.3V or 5.0V output for loads up to 30mA. The MAX1616
provides an adjustable voltage from 1.24V to 28V. The maximum output current is a function of the package’s maximum power dissipation for a given temperature. A 5µA load is required to maintain output regulation.The MAX1615’s output voltage is fed back through an
internal resistor voltage divider connected to OUT. Set
the output voltage to either 3.3V or 5.0V with the 5/3pin.
Select the 5V output by connecting 5/3to OUT, or the
3.3V output by connecting 5/3to GND.
The MAX1616 uses external feedback, allowing the out-
put voltage to be set by external resistors (see Setting
the MAX1616 Output Voltage section). The typical FB
threshold is at 1.24V.
Shutdown
The device enters shutdown mode when SHDN is low.
In shutdown mode, the pass transistor, control circuit,
reference, and all biases turn off, reducing the supply
current to below 1µA. Connect SHDN to IN for automatic
start-up.
Current Limit
Output current is limited to 100mA (typical). The current
limit exceeds the 30mA (max) safe operating limit. The
output can be shorted to ground for 30 seconds without
damaging the part.
Thermal-Overload Protection When the junction temperature exceeds T J = +150°C,
the thermal sensor sends a signal to the shutdown
logic, turning off the pass transistor and allowing the IC
to cool. The thermal sensor turns the pass transistor on again after the IC’s junction temperature cools by +20°C (typical), resulting in a pulsating output during continuous thermal-overload conditions.Operating Region and Power Dissipation Maximum power dissipation depends on the thermal resistance of the case and circuit board, the tempera-ture difference between the die junction and ambient
air, and the rate of air flow. The device’s power dissipa-
MAX1615/MAX1616High-Voltage, Low-Power Linear Regulators for Notebook Computers _______________________________________________________________________________________5______________________________________________________________Pin Description
Figure 1. Functional Diagram。