MAX8902BATAT Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Low-Noise 500mA LDO Regulators in a 2mm x 2mm TDFN Package

EVALUATION KIT AVAILABLE
MAX8902A/MAX8902B
Low-Noise 500mA LDO Regulators
in a 2mm x 2mm TDFN Package
General Description
The MAX8902A/MAX8902B low-noise linear regulators
deliver up to 500mA of output current with only
16µV_RMS of output noise in a 100kHz bandwidth. These
regulators maintain their output voltage over a wide
input range, requiring only 100mV of input-to-output
headroom at full load.
These LDOs maintain a low 80µA typical supply cur-
rent, independent of the load current and dropout volt-
age. The regulator control circuitry includes a
programmable soft-start circuit and short circuit,
reverse current, and thermal-overload protection. Other
features include an enable input and a power-OK out-
put (MAX8902B only).
The MAX8902A output voltage can be set to 1.5V, 1.8V,
2.0V, 2.5V, 3.0V, 3.1V, 3.3V, 4.6V, or 4.7V using the
SELA and SELB inputs. The MAX8902B output voltage
can be set between 0.6V and 5.3V with an external
resistor voltage-divider.
Applications
Notebook Computers
MP3 and Portable Media Players
Wireless Headphones
GPS Portable Navigation Devices
Smartphones
INPUT
4.7V TO 5.5V
10μF
ON
IN
OUT
MAX8902A
BYP
EN
OFF
OUTS
OUTPUT
4.6V
0.01μF
10μF
SELA
SELB
EP
GND
Features
o 1.7V to 5.5V Input Voltage Range
o 0.6V to 5.3V Output Voltage Range
o 16µV_RMS Output Noise, 10Hz to 100kHz
o 80µA Operating Supply Current
o 92dB PSRR at 5kHz
o Guaranteed 500mA Output Current
o ±1.5% Output Accuracy Over Load, Line, and
Temperature
o 100mV (max) Dropout at 500mA Load
o < 1µA Shutdown Supply Current
o 700mA Short-Circuit Protection
o Thermal-Overload Protection
o Output-to-Input Reverse Current Protection
o 2mm x 2mm x 0.8mm TDFN Package
Ordering Information
PART
FEATURES
TOP
MARK
MAX8902AATA+
Pin-selectable output
voltage
ABG
MAX8902BATA+ Adjustable output voltage ABH
MAX8902BATA/V+ Adjustable output voltage ADL
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Note: All devices are in an 8-pin, 2mm x 2mm TDFN package
with an exposed paddle and operate over the -40°C to +125°C
automotive temperature range.
Typical Operating Circuits
INPUT
1.7V TO 5.5V
10μF
ON
OFF
LOGIC
SUPPLY
TO μC
R3
100kΩ
IN
OUT
MAX8902B
BYP
EN
FB
GS
POK
EP
GND
OUTPUT ADJUSTABLE
0.6V TO 5.3V
0.01μF
10μF
R1
R2
Pin Configurations appear at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-0990; Rev 5; 10/12