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MAX8877EUK33+Datasheet PDF
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__________________General Description
The MAX8877/MAX8878 low-noise, low-dropout linear
regulators operate from a 2.5V to 6.5V input and deliver
up to 150mA. These devices are pin-compatible with
the industry-standard '2982 and offer an improved
dropout voltage. Typical output noise is 30µV
RMS
, and
typical dropout is only 165mV at 150mA. The output
voltage is preset to voltages in the range of 1.5V to
5.0V, in 100mV increments.
Designed with an internal P-channel MOSFET pass
transistor, the MAX8877/MAX8878 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 ther-
mal-shutdown protection, and reverse battery protec-
tion. The MAX8878 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 pack-
ages.
________________________Applications
Cellular Telephones
Cordless Telephones
PCS Telephones
PCMCIA Cards
Modems
Hand-Held Instruments
Palmtop Computers
Electronic Planners
____________________________Features
♦ Pin-Compatible with the Industry-Standard '2982
♦ Low Output Noise: 30µV
RMS
♦ Low 55mV Dropout at 50mA Output
(165mV at 150mA output)
♦ Low 85µA No-Load Supply Current
♦ Low 100µA Operating Supply Current
(even in dropout)
♦ Thermal-Overload and Short-Circuit Protection
♦ Reverse Battery Protection
♦ Output Current Limit
♦ Preset Output Voltages (±1.4% Accuracy)
♦ 10nA Logic-Controlled Shutdown
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX8877/MAX8878
Low-Noise, Low-Dropout, 150mA Linear
Regulators with '2982 Pinout
________________________________________________________________ Maxim Integrated Products 1
GND
BP
SHDN
1
5
OUT
IN
MAX8877
MAX8878
SOT23-5
REGULAR AND THIN
TOP VIEW
2
3
4
_____________________Pin Configuration
MAX8877
MAX8878
INPUT
2.5V TO 6.5V
IN OUT
SHDN
BP
GND
OUTPUT
PRESET
1.5V TO 5.0V
150mA
C
BP
0.01µF
C
OUT
3.3µF
C
IN
1µF
OFF
ON
____________Typical Operating Circuit
19-1301; Rev 2; 1/01
_________________Ordering Information
*Dice are tested at T
A
= +25°C only.
**xy is the output voltage code (see Expanded Ordering
Information table at end of data sheet).
PART**
TEMP.
RANGE
PIN-PACKAGE
MAX8877C/Dxy 0°C to +70°C Dice*
MAX8877EUKxy-T -40°C to +85°C 5 SOT23-5 Regular
MAX8877EZKxy-T -40°C to +85°C 5 SOT23-5 Thin
MAX8878C/Dxy 0°C to +70°C Dice*
MAX8878EUKxy-T -40°C to +85°C 5 SOT23-5 Regular
MAX8878EZKxy-T -40°C to +85°C 5 SOT23-5 Thin
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