MAX8559 Maxim, MAX8559 Datasheet
MAX8559
Manufacturer Part Number
MAX8559
Description
Dual / 300mA / Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN
Manufacturer
Maxim
Datasheet
1.MAX8559.pdf
(12 pages)
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The MAX8559 dual, low-noise, low-dropout (LDO) linear
regulator operates from a 2.5V to 6.5V input voltage
and delivers at least 300mA of continuous output cur-
rent. It offers low output noise and low dropout of only
60mV at 100mA. Typical output noise for this device is
32µV
an internal P-channel MOSFET pass transistor, the
MAX8559 maintains a low 115µA supply current per
LDO, independent of the load current and dropout volt-
age. Other features include short-circuit protection and
thermal-shutdown protection. The MAX8559 includes
two independent logic-controlled shutdown inputs and
is capable of operating without a bypass capacitor to
further reduce total solution size. The MAX8559 is avail-
able in a miniature 8-bump UCSP (2mm x 1mm) or
8-pin TDFN (3mm x 3mm) package.
19-3121; Rev 0; 1/04
Output Voltage Selector Guide appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
2.2µF
2.5V TO 6.5V
min
RMS
INPUT
Cellular and Cordless Phones
PDAs and Palmtop Computers
Notebook Computers
Digital Cameras
PCMCIA Cards
Wireless LAN Cards
Hand-Held Instruments
OFF
OFF
, and PSRR is 70dB at 10kHz. Designed with
ON
ON
with Independent Shutdown in UCSP or TDFN
Typical Operating Circuit
SHDNB
INA
INB
SHDNA
________________________________________________________________ Maxim Integrated Products
Dual, 300mA, Low-Noise Linear Regulator
General Description
MAX8559
GND
OUTA
OUTB
Applications
BP
0.01µF
(OPTIONAL)
1.5V TO 3.3V
1.5V TO 3.3V
2.2µF/150mA
4.7µF/300mA
2.2µF/150mA
4.7µF/300mA
*xy = Output voltage code (see the Output Voltage
Selector Guide).
**EP = Exposed pad.
†Future product—contact factory for availability.
MAX8559EBAxy*†
MAX8559ETAxy*
Pin Configurations continued at end of data sheet.
Two Low-Dropout-Voltage Regulators
Low 32µV
300mA Output Current for Each LDO
70dB PSRR at 10kHz
Independent Shutdown Controls
Low 60mV Dropout at 100mA Load
115µA Operating Supply Current per LDO
1.5V to 3.3V Factory-Preset Output
Small Ceramic Output Capacitors
Output Current Limit
Thermal-Overload and Short-Circuit Protection
1.95W Power-Dissipation Capability (TDFN)
2mm
PART
2
Footprint (UCSP)
TOP VIEW
RMS
Output Noise
-40 C to +85 C
-40 C to +85 C
8
1
Ordering Information
TEMP RANGE
3mm x 3mm
MAX8559ETA
TDFN
7
2
Pin Configurations
3
6
5
4
PIN-PACKAGE
8 UCSP (B8-1)
8 TDFN-EP**
Features
1
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