MAX8863 Просмотр технического описания (PDF) - Maxim Integrated
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MAX8863 Datasheet PDF : 10 Pages
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MAX8863T/S/R,
MAX8864T/S/R
Low-Dropout, 120mA Linear Regulators
General Description
The MAX8863T/S/R and MAX8864T/S/R low-dropout linear
regulators operate from a +2.5V to +6.5V input range and
deliver up to 120mA. A PMOS pass transistor allows the
low, 80μA supply current to remain independent of load,
making these devices ideal for battery-operated portable
equipment such as cellular phones, cordless phones, and
modems.
The devices feature Dual Mode™ operation: their output
voltage is preset (at 3.15V for the T versions, 2.84V for
the S versions, or 2.80V for the R versions) or can be
adjusted with an external resistor divider. Other features
include low-power shutdown, short-circuit protection, thermal
shutdown protection, and reverse battery protection. The
MAX8864 also includes an auto-discharge function, which
actively discharges the output voltage to ground when the
device is placed in shutdown mode. Both devices come in
a miniature 5-pin SOT23 package.
Applications
●● Cordless Telephones
●● PCS Telephones
●● Cellular Telephones
●● PCMCIA Cards
●● Modems
●● Hand-Held Instruments
●● Palmtop Computers
●● Electronic Planners
Typical Operating Circuit
Benefits and Features
●● Low Cost
●● Low, 55mV Dropout Voltage at 50mA IOUT
●● Low, 68μA No-Load Supply Current
Low, 80μA Operating Supply Current (even in
dropout)
●● Low, 350μVRMS Output Noise
●● Miniature External Components
●● Thermal Overload Protection
●● Output Current Limit
●● Reverse Battery Protection
●● Dual Mode Operation: Fixed or Adjustable
(1.25V to 6.5V) Output
●● Low-Power Shutdown
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX8863TEUK+T
MAX8863TMUK/PR3+T
MAX8863SEUK+T
-40°C to +85°C
-55°C to +125°C
-40°C to +85°C
5 SOT23
5 SOT23
5 SOT23
MAX8863REUK+T
-40°C to +85°C
5 SOT23
MAX8864TEUK+T
MAX8864SEUK+T
-40°C to +85°C
-40°C to +85°C
5 SOT23
5 SOT23
MAX8864REUK+T
-40°C to +85°C
5 SOT23
*Alternate marking information: CY_ _ = MAX8863T,
CZ_ _ = MAX8863S, DA_ _ = MAX8864T, DB_ _ = MAX8864S
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration
CIN
1µF
BATTERY
IN
OUT
MAX8863
MAX8864
SHDN
GND SET
OUTPUT
VOLTAGE
COUT
1µF
Dual Mode is a trademark of Maxim Integrated Products, Inc.
TOP VIEW
+
SHDN 1
5 SET
GND 2
MAX8863
MAX8864
IN 3
4 OUT
SOT23
19-0466; Rev 6; 5/16
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