MAX8863T_11 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Low-Dropout, 120mA Linear Regulators Miniature External Components

19-0466; Rev 3; 5/11
Low-Dropout, 120mA Linear Regulators
_______________General Description
The MAX8863T/S/R and MAX8864T/S/R low-dropout lin-
ear regulators operate from a +2.5V to +6.5V input
range and deliver up to 120mA. A PMOS pass transis-
tor allows the low, 80µA supply current to remain inde-
pendent 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 out-
put 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 fea-
tures include low-power shutdown, short-circuit protec-
tion, thermal shutdown protection, and reverse battery
protection. The MAX8864 also includes an auto-dis-
charge function, which actively discharges the output
voltage to ground when the device is placed in shut-
down mode. Both devices come in a miniature 5-pin
SOT23-5 package.
________________________Applications
Cordless Telephones
Modems
PCS Telephones
Hand-Held Instruments
Cellular Telephones
Palmtop Computers
PCMCIA Cards
Electronic Planners
__________Typical Operating Circuit
____________________________Features
o Low Cost
o Low, 55mV Dropout Voltage @ 50mA I_OUT
o Low, 68µA No-Load Supply Current
Low, 80µA Operating Supply Current (even in
dropout)
o Low, 350µV_RMS Output Noise
o Miniature External Components
o Thermal Overload Protection
o Output Current Limit
o Reverse Battery Protection
o Dual Mode™ Operation: Fixed or Adjustable
(1.25V to 6.5V) Output
o Low-Power Shutdown
______________Ordering Information
PART
TEMP RANGE
PIN- SOT TOP
PACKAGE MARK*
MAX8863TEUK+T -40°C to +85°C 5 SOT23-5 AABE
MAX8863SEUK+T -40°C to +85°C 5 SOT23-5 AABF
MAX8863REUK+T -40°C to +85°C 5 SOT23-5 AABV
MAX8864TEUK+T -40°C to +85°C 5 SOT23-5 AABG
MAX8864SEUK+T -40°C to +85°C 5 SOT23-5 AABH
MAX8864REUK+T -40°C to +85°C 5 SOT23-5 AABW
*Alternate marking information: CY_ _ = MAX8863T,
CZ_ _ = MAX8863S, DA_ _ = MAX8864T, DB_ _ = MAX8864S
+Denotes a lead(Pb)-free/RoHS-compliant package.
__________________Pin Configuration
C_IN
1µF
BATTERY
IN
OUT
MAX8863
MAX8864
SHDN
GND
SET
OUTPUT
VOLTAGE
C_OUT
1µF
TOP VIEW
SHDN 1
5 SET
MAX8863
GND 2 _MAX8864
IN 3
OUT
4
SOT23-5
Dual Mode is a trademark of Maxim Integrated Products.
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