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MAX8860EUA28+

P1-P3P4-P6P7-P8
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.
General Description
The MAX8860 low-noise, low-dropout linear regulator
operates from a 2.5V to 6.5V input and is guaranteed to
deliver 300mA. Typical output noise for this device is
60µV
RMS
, and typical dropout is 105mV at 200mA. In
addition to the six available preset output voltages
(1.8V, 2.5V, 2.77V, 2.82V, 3V, and 3.3V), the Dual
Mode™ feature allows the device to be configured as
an adjustable output regulator from 1.25V to 6.5V.
Designed with an internal P-channel MOSFET pass tran-
sistor, the MAX8860 has a low 120µA supply current. An
output fault-detection circuit indicates loss of regulation.
Other features include a 10nA, logic-controlled shut-
down mode, short-circuit and thermal-shutdown protec-
tion, and reverse battery protection. The MAX8860 is
available in a miniature 8-pin µMAX package.
Applications
Wireless Handsets
DSP Core Power
PCMCIA Cards
Hand-Held Instruments
Palmtop Computers
Electronic Planners
Features
♦ High Output Current (300mA)
♦ Low Output Voltage Noise: 60µV
RMS
♦ Low 105mV Dropout at 200mA Output
♦ Low 120µA No-Load Supply Current
♦ Thermal Overload and Short-Circuit Protection
♦ Reverse Battery Protection
♦ 10nA Logic-Controlled Shutdown
♦ FAULT Indicator
♦ Small, Space-Saving µMAX Package
(1.1mm max height)
♦ Small 2.2µF Output Capacitor
Saves Space and Cost
MAX8860
Low-Dropout, 300mA
Linear Regulator in µMAX
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
8
7
6
5
FAULT
SHDN
CC
SETOUT
GND
IN
OUT
MAX8860
µMAX
TOP VIEW
MAX8860
OUT
OUT
CC
SET
FAULT
GND
IN
SHDN
C1
2.2µF
C2
2.2µF
C3
33nF
OUTPUT
UP TO
300mA
INPUT
+2.5V TO
+6.5V
FAULT-
DETECT
OUTPUT
R1
100kΩ
Typical Operating Circuit
19-1422; Rev 2; 1/01
MAX8860EUA18
MAX8860EUA28 -40°C to +85°C
-40°C to +85°C 8 µMAX
8 µMAX
Pin Configuration
Ordering Information
Dual Mode is a trademark of Maxim Integrated Products.
MAX8860EUA33 -40°C to +85°C 8 µMAX
PART TEMP RANGE
PIN-
PACKAGE
+1.80
+2.82
+3.30
V
OUT
(V)
+2.77MAX8860EUA27 -40°C to +85°C 8 µMAX
+2.50MAX8860EUA25 -40°C to +85°C 8 µMAX
MAX8860EUA30 -40°C to +85°C +3.008 µMAX
MAX8860
Low-Dropout, 300mA
Linear Regulator in µMAX
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.6V, C
CC
= 33nF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, SHDN to GND .......................................................-7V to +7V
SHDN to IN ...............................................................-7V to +0.3V
SET, CC, FAULT to GND ..........................................-0.3V to +7V
OUT to GND .............................................. -0.3V to (V
IN
+ 0.3V)
FAULT Sink Current ...........................................................20mA
Continuous Output Current ..............................................330mA
Output Short-Circuit Duration ....................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.1mW/°C above +70°C) ............330mW
Thermal Resistance (θ
JA
)
8-Pin µMAX ............................................................+244°C/W
Operating Temperature Range
MAX8860EUA_ _ ...........................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10sec) ............................+300°C
I
OUT
= 100µA to 300mA
V
IN
= 2.5V to 6.5V, SET = OUT, I
OUT
= 1mA
I
OUT
= 300mA
I
OUT
= 200mA
I
OUT
= 1mA
DC average current rating
V
OUT
= 0, SHDN = GND
SET = GND
CONDITIONS
%/mA
0.0006
Load Regulation
0.0001
%/V-0.1 0.01 0.1Line Regulation
mV
155
Dropout Voltage (Note 4) 105 220
0.6
µA
0.05
Shutdown Supply Current
0.01 1
µA
165
Supply Current
120 270
3.24 3.3 3.35
V2.5 6.5Input Voltage (Note 2)
mA330 770Output Current Limit
mA300Maximum Output Current
1.230 1.248 1.267
UNITSMIN TYP MAXPARAMETER
V1.25 6.5
Adjustable Output Voltage
Range (Note 3)
T
A
= +25°C
MAX8860EUA33
T
A
= -40°C to +85°C 3.21 3.38
T
A
= +25°C
MAX8860EUA30
T
A
= -40°C to +85°C 2.92 3.08
2.95 3.00 3.05
T
A
= +25°C
MAX8860EUA28
T
A
= -40°C to +85°C 2.75 2.90
2.78 2.82 2.87
I
OUT
= 0
I
OUT
= 300mA
T
A
= +25°C
T
A
= +85°C
SET = OUT
SET = GND
SET Threshold Voltage V
SET = OUT, V
IN
= 2.5V to 6.5V,
I
OUT
= 1mA
1.220 1.275
T
A
= +25°C
T
A
= -40°C to +85°C
100µA < I
OUT
< 300mA,
V
IN
= V
OUT
1V,
SET = GND
T
A
= +25°C
MAX8860EUA25
T
A
= +25°C
MAX8860EUA27
T
A
= -40°C to +85°C
T
A
= -40°C to +85°C
2.70 2.84
2.43 2.57
2.73 2.77 2.81
2.46 2.50 2.54
T
A
= +25°C
VOutput Voltage
MAX8860EUA18
T
A
= -40°C to +85°C 1.755 1.845
1.77 1.80 1.83
MAX8860
Low-Dropout, 300mA
Linear Regulator in µMAX
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.6V, C
CC
= 33nF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Note 1: Specifications to -40°C are guaranteed by design and not production tested.
Note 2: Guaranteed by line-regulation test.
Note 3: Adjustable mode only.
Note 4: The dropout voltage is defined as V
IN
- V
OUT
when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
2V. Since the
minimum input voltage is 2.5V, this is applicable only for voltages of 2.5V or higher.
Note 5: The FAULT detection voltage is the difference from input to output voltage. Maintain the input above this level to ensure
good line and load regulation.
C
OUT
= 10µF, V
OUT
to 90% of final value
V
IN
= 2.5V, I
SINK
= 2mA
SHDN = GND or IN
V
SET
= 1.3V
CONDITIONS
µs120Start-Up Time
°C20Thermal Shutdown Hysteresis
°C170Thermal Shutdown Temperature
nA
0.01 100
0.01 100
V0.25
FAULT Output Low Voltage
nA
0.5
SHDN Input Bias Current
0.01 2.5
nA
0.5
SET Input Leakage Current (Note 3)
UNITSMIN TYP MAXPARAMETER
T
A
= +25°C
T
A
= +85°C
60
65
T
A
= +25°C
T
A
= +85°C
SET = GND, I
OUT
= 200mA mV130 280
FAULT Detection Voltage (Note 5)
Typical Operating Characteristics
(V
IN
= V
OUT
+ 0.5V, C
IN
= C
OUT
= 2.2µF, C
CC
= 33nF, T
A
= +25°C, unless otherwise noted.)
-0.4
-0.2
0
0.2
0.4
NORMALIZED OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8860 toc01
LOAD CURRENT (mA)
OUTPUT VOLTAGE (%)
0 150 20050 100 250 300
V
OUT
NORMALIZED AT I
OUT
= 0
-0.3
-0.1
-0.2
0
0.2
0.1
0.3
NORMALIZED OUTPUT VOLTAGE
vs. TEMPERATURE
MAX8860 toc02
TEMPERATURE (°C)
OUTPUT VOLTAGE (%)
-40 20 40-20 0 60 80
I
OUT
= 0
I
OUT
= 100mA
I
OUT
= 200mA
V
OUT
NORMALIZED AT +25°C, I
OUT
= 0
0
40
120
100
80
60
20
160
140
200
180
0 10050 150 200 250 300
SUPPLY CURRENT vs. LOAD CURRENT
MAX8860 toc03
LOAD CURRENT (mA)
SUPPLY CURRENT (µA)
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
V
FAULT
= 3.6V
0.5
FAULT Output Off-Leakage Current
T
A
= +25°C
T
A
= +85°C
V
IL
, 2.5V ≤ V
IN
≤ 5.5V
V
IH
, 2.5V ≤ V
IN
≤ 5.5V
V0.4
V2.0
SHDN Input Threshold
C
OUT
= 2.2µF
C
OUT
= 10µF
I
OUT
= 10mA,
10Hz < f < 100kHz
C
OUT
= 100µF
10Hz < f < 100kHz, C
OUT
= 10µF
µV
RMS
190
55
Output Voltage Noise
nV√Hz
Output Voltage Noise Density
P1-P3P4-P6P7-P8

MAX8860EUA28+

Mfr. #:
Buy MAX8860EUA28+
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 300mA Linear Regulator
Lifecycle:
New from this manufacturer.
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