19-1302; Rev 3; 7/02
Low-Noise, Low-Dropout,
150mA Linear Regulators in SOT23
_______________General Description
____________________________Features
The MAX8867/MAX8868 low-noise, low-dropout linear
regulators operate from a 2.5V to 6.5V input and deliver
up to 150mA. Typical output noise for these devices is
ꢀ Low Output Noise: 30µV
RMS
ꢀ Low 55mV Dropout at 50mA Output
(165mV at 150mA output)
just 30µV
, and typical dropout is only 165mV at
RMS
150mA. The output voltage is preset to voltages in the
range of 2.5V to 5.0V, in 100mV increments. The
MAX8867 and MAX8868 are pin-compatible with the
MAX8863 and MAX8864, except for the BP pin.
ꢀ Low 85µA No-Load Supply Current
ꢀ Low 100µA Operating Supply Current
(Even In Dropout)
Designed with an internal P-channel MOSFET pass tran-
sistor, the MAX8867/MAX8868 maintain a low 100µA
supply current, independent of the load current and
dropout voltage. Other features include a 10nA logic-
controlled shutdown mode, short-circuit and thermal-
shutdown protection, and reverse battery protection.
The MAX8868 also includes an auto-discharge function,
which actively discharges the output voltage to ground
when the device is placed in shutdown. Both devices
come in regular and thin 5-pin SOT23 packages.
ꢀ Thermal-Overload and Short-Circuit Protection
ꢀ Reverse Battery Protection
ꢀ Output Current Limit
ꢀ Preset Output Voltages ( 1.4% Accuracy)
ꢀ 10nA Logic-Controlled Shutdown
_________________Ordering Information
________________________Applications
Cellular Telephones
Cordless Telephones
PCS Telephones
PCMCIA Cards
Modems
TEMP
RANGE
PART**
PIN-PACKAGE
Hand-Held Instruments
Palmtop Computers
Electronic Planners
MAX8867EUKxy-T
MAX8867EZKxy-T
MAX8867C/Dxy
-40 C to +85 C SOT23-5 Regular
-40 C to +85 C SOT23-5 Thin
0 C to +70 C Dice*
MAX8868EUKxy-T
MAX8868EZKxy-T
MAX8868C/Dxy
-40 C to +85 C SOT23-5 Regular
-40 C to +85 C SOT23-5 Thin
0 C to +70 C Dice*
*Dice are tested at T = +25°C only.
A
**xy is the output voltage code (see Expanded Ordering
Information table at end of data sheet).
__________________Pin Configuration
__________Typical Operating Circuit
TOP VIEW
INPUT
OUTPUT
2.5V TO 6.5V
PRESET
SHDN
GND
IN
1
2
3
5
BP
IN
OUT
2.5V TO 5.0V
150mA
C
1 F
IN
C
OUT
1 F
MAX8867
MAX8868
MAX8867
MAX8868
ON
SHDN
OFF
BP
4
OUT
C
GND
BP
0.01 F
SOT23-5
________________________________________________________________ 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.