MAX8860 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Low-Dropout, 300mA Linear Regulator in μMAX

19-1422; Rev 1; 12/99
Low-Dropout, 300mA
Linear Regulator in µMAX
General Description
The MAX8860 low-noise, low-dropout linear regulator
operates from a +2.5V to +6.5V input and is guaran-
teed to deliver 300mA. Typical output noise for this
device is 60µV_RMS, and typical dropout is 105mV at
200mA. In addition to the six available preset output
voltages (+1.8V, +2.5V, +2.77V, +2.82V, +3.0V, and
+3.3V), the Dual Mode™ feature allows the device to
be configured as an adjustable output regulator from
+1.25V to +6.5V.
Designed with an internal P-channel MOSFET pass tran-
sistor, the MAX8860 has a low 120µA supply current. An
output fault-detection circuit indicates loss of regulation.
Other features include a 10nA, logic-controlled shut-
down mode, short-circuit and thermal-shutdown protec-
tion, and reverse battery protection. The MAX8860 is
available in a miniature 8-pin µMAX package.
Features
o High Output Current (300mA)
o Low Output Voltage Noise: 60µV_RMS
o Low 105mV Dropout at 200mA Output
o Low 120µA No-Load Supply Current
o Thermal-Overload and Short-Circuit Protection
o Reverse Battery Protection
o 10nA Logic-Controlled Shutdown
o FAULT Indicator
o Small, Space-Saving µMAX Package
(1.1mm max height)
o Small 2.2µF Output Capacitor
Saves Space and Cost
Wireless Handsets
DSP Core Power
PCMCIA Cards
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Applications
Typical Operating Circuit
Ordering Information
PART
MAX8860EUA18
MAX8860EUA25
MAX8860EUA27
MAX8860EUA28
MAX8860EUA30
MAX8860EUA33
TEMP. RANGE
PIN-
PACKAGE
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
V_OUT
(V)
+1.80
+2.50
+2.77
+2.82
+3.00
+3.30
INPUT
+2.5V TO
+6.5V
C1
2.2µF
IN
OUT
MAX8860
SHDN
OUT
SET
FAULT
GND
CC
OUTPUT
UP TO
300mA
C2
R1
2.2µF
100k
FAULT-
DETECT
OUTPUT
C3
33nF
Pin Configuration
TOP VIEW
OUT 1
IN 2
GND 3
OUT 4
MAX8860
µMAX
8 FAULT
7 SHDN
6 CC
5 SET
Dual Mode is a trademark of Maxim Integrated Products.
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