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MAX1615 fiches techniques PDF

Maxim Integrated - High-Voltage / Low-Power Linear Regulators for Notebook Computers

Numéro de référence MAX1615
Description High-Voltage / Low-Power Linear Regulators for Notebook Computers
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX1615 fiche technique
19-1225; Rev 2; 1/98
High-Voltage, Low-Power Linear Regulators
for Notebook Computers
________________General Description
The MAX1615/MAX1616 are micropower, SOT23-5 lin-
ear regulators that supply always-on, keep-alive power
to CMOS RAM and microcontrollers (µCs) in systems
with high-voltage batteries. Key features include wide
input voltage range, low dropout voltage, and low qui-
escent supply current.
Despite a miserly 8µA (max) no-load supply current, the
MAX1615/MAX1616 have excellent line-transient
response and AC power-supply rejection ratio. They
provide a clean, fixed 5V or 3.3V output (MAX1615) or
an adjustable 1.24V to 28V output (MAX1616), even
when subjected to fast supply-voltage changes that
occur during the switchover from battery to AC adapter
input power. The space-saving SOT23-5 package has
excellent thermal characteristics and tolerates up to
571mW of power dissipation. Fault protection is provid-
ed by internal foldback current limiting and thermal-
shutdown circuitry.
________________________Applications
CMOS/RTC Backup Power
Microcontroller Power
Notebook Computers
Smart-Battery Packs
PDAs and Handy-Terminals
Battery-Powered Systems
____________Typical Operating Circuit
____________________________Features
o 4V to 28V Input Range
o 8µA (max) Quiescent Supply Current
o <1µA Shutdown Supply Current
o 3.3V or 5V, Pin-Selectable Output (MAX1615)
Adjustable 1.24V to 28V Output (MAX1616)
o 30mA Output Current
o ±2% Initial Output Accuracy
o Thermal-Overload Protection
o 5-Pin SOT23 Package
o Low Cost
_______________Ordering Information
PART
TEMP. RANGE
MAX1615EUK-T -40°C to +85°C
MAX1616EUK-T -40°C to +85°C
PIN-
SOT
PACKAGE TOP MARK
5 SOT23-5 ABZD
5 SOT23-5 ABZE
___________________Pin Configuration
BATTERY
CIN
0.1µF
IN OUT
MAX1615
SHDN
GND
5/3
OUTPUT
VOLTAGE
COUT
4.7µF
TOP VIEW
IN 1
5 SHDN
MAX1615
GND 2 MAX1616
OUT 3
4 5/3 (FB)
SOT23-5
( ) ARE FOR MAX1616.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.

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