19-2732; Rev 0; 1/03
Ultra-Low-Noise, High PSRR,
Low-Dropout,120mA Linear Regulators in SC70
General Description
Features
The MAX8510/MAX8511/MAX8512 ultra-low-noise, low-
dropout (LDO) linear regulators are designed to deliver up
to 120mA continuous output current from a tiny 5-pin
SC70 plastic package. These regulators achieve a low
120mV dropout for 120mA load current. The MAX8510
uses an advanced architecture to achieve ultra-low output
ꢀ Space-Saving 5-Pin SC70 Package
ꢀ 11µV Output Noise at 100Hz to 100kHz
RMS
Bandwidth (MAX8510)
ꢀ 78dB PSRR at 1kHz (MAX8510)
ꢀ 120mV Dropout at 120mA Load
voltage noise of 11µV
and PSRR of 54dB at 100kHz.
RMS
The MAX8511 does not require a bypass capacitor,
hence achieving the smallest PC board area. The
MAX8512’s output voltage can be adjusted with an
external divider.
ꢀ Stable with 1µF Ceramic Capacitor for Any Load
ꢀ Guaranteed 120mA Output
ꢀ Only Need Input and Output Capacitors (MAX8511)
The MAX8510/MAX8511 are preset to a variety of volt-
ages in the 1.5V to 4.5V range. Designed with a P-
channel MOSFET series pass transistor, the MAX8510/
MAX8511/MAX8512 maintain very low ground current
(40µA).
ꢀ Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V,
2.85V, 3V, 3.3V, 4.5V (MAX8510/MAX8511) and
Adjustable (MAX8512)
ꢀ Low 40µA Ground Current
The regulators are designed and optimized to work with
low-value, low-cost ceramic capacitors. The MAX8510
requires only 1µF (typ) of output capacitance for stability
with any load. When disabled, current consumption drops
to below 1µA.
ꢀ Excellent Load/Line Transient
ꢀ Overcurrent and Thermal Protection
Ordering Information
PART*
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
5 SC70-5
Applications
Cellular and Cordless Phones
PDA and Palmtop Computers
Base Stations
Bluetooth Portable Radios and Accessories
Wireless LANs
MAX8510EXKxy-T
MAX8511EXKxy-T
MAX8512EXK-T
5 SC70-5
5 SC70-5
*xy is the output voltage code (see Output Voltage Selector
Guide). Other versions between 1.5V and 4.5V are available in
100mV increments. Contact factory for other versions.
Digital Cameras
Personal Stereos
Output Voltage Selector Guide appears at end of data sheet.
Portable and Battery-Powered Equipment
Typical Operating Circuits
Pin Configuration
INPUT
OUTPUT PRESET
1.5V TO 4.5V
TOP VIEW
2V TO 6V
IN
OUT
BP
IN
GND
1
2
3
5
4
OUT
C
= 1µF
IN
MAX8510
C
BP
= 10nF
ON
MAX8510
MAX8511
MAX8512
SHDN
OFF
C
OUT
= 1µF
BP (MAX8510)
N.C. (MAX8511)
FB (MAX8512)
GND
SHDN
SC70-5
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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.