MAX8860EUA27+ Maxim Integrated Products, MAX8860EUA27+ Datasheet - Page 8

• Manufacturer Part Number: MAX8860EUA27+
• Description: IC REG LDO 2.77V/ADJ .3A 8-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX8860EUA27+

• Regulator Topology: Positive Fixed or Adjustable
• Voltage - Output: 2.77V, 1.25 ~ 6.5 V
• Voltage - Input: 2.5 ~ 6.5 V
• Voltage - Dropout (typical): 0.155V @ 300mA
• Number Of Regulators: 1
• Current - Output: 300mA (Min)
• Current - Limit (min): 330mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 6.5 V
• Output Voltage: 2.7 V
• Output Type: Fixed
• Dropout Voltage (max): 0.22 V at 200 mA
• Output Current: 300 mA
• Line Regulation: 0.1 %
• Load Regulation: 0 %
• Voltage Regulation Accuracy: 1.4 %
• Maximum Power Dissipation: 0.33 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

When operating the MAX8860 with an input voltage
above 5.5V, a minimum load current of 50µA is required
to maintain regulation in preset voltage mode. When
setting the output with external resistors, ensure that the
minimum current through the external feedback resis-
tors and load is at least 60µA. This applies only when
the input voltage exceeds 5.5V. For input voltages less
than 5.5V, the MAX8860 maintains regulation and sta-
bility without external loading.
Typically, use a 2.2µF capacitor on the input and a
2.2µF capacitor on the output of the MAX8860.
Capacitor type is not critical, as long as it has an ESR
less than 0.5Ω. Larger capacitor values and lower ESR
provide better supply-noise rejection and transient
response. Use higher-value capacitors (10µF) if large,
fast input or load transients are anticipated or if the
device is located several inches from the power source.
For stable operation over the full temperature range,
with load currents up to 300mA, a minimum output-
capacitor value of 2.2µF is recommended. There is no
upper limit to capacitor size. The circuit used to gener-
ate the typical operating characteristics data used
2.2µF, X7R, 16V (1206) ceramic capacitors. These
capacitors typically have an ESR of 50mΩ.
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2001 Maxim Integrated Products
Low-Dropout, 300mA
Linear Regulator in µMAX
Applications Information
V
IN
Capacitor Selection and
> +5.5V Minimum Load
Current Requirements
Regulator Stability
Printed USA
The MAX8860 is designed to deliver low dropout volt-
age and low quiescent current in battery-powered sys-
tems. Power-supply rejection is 67dB at low frequencies
and rolls off above 100kHz. At high frequencies, the out-
put capacitor is the major contributor to the rejection of
power-supply noise (see the Power-Supply Rejection
Ratio vs. Frequency graph in the Typical Operating
Characteristics).
When operating from sources other than batteries,
improve supply-noise rejection and transient response
by increasing the values of the input and output capaci-
tors, and by using passive filtering techniques (see the
supply and load-transient responses in the Typical
Operating Characteristics).
The MAX8860 load-transient response graph (see the
Typical Operating Characteristics) shows the output
response due to changing load current. Reduce over-
shoot by increasing the output capacitor’s value and
decreasing its ESR.
A regulator’s minimum input-output voltage differential
(or dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this deter-
mines the useful end-of-life battery voltage. Because
the MAX8860 uses a P-channel MOSFET pass transis-
tor, its dropout voltage is a function of R
ly 0.5Ω) multiplied by the load current (see the
Electrical Characteristics table).
TRANSISTOR COUNT: 148
Power-Supply Rejection and Operation
is a registered trademark of Maxim Integrated Products.
from Sources Other than Batteries
Input-Output (Dropout) Voltage
Load-Transient Considerations
Chip Information
DS(ON)
(typical-