Maxim MAX8860EUA28, MAX8860EUA27, MAX8860EUA25, MAX8860EUA18, MAX8860EUA30 Datasheet

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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
, and typical dropout is 105mV at 200mA. In addition to the six available preset output voltages (+1.8V, +2.5V, +2.77V, +2.82V, +3.0V, 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 tran­sistor, the MAX8860 has a low 120µA supply current. An output fault-detection circuit indicates loss of regulation. Other features include a 10nA, logic-controlled shut­down mode, short-circuit and thermal-shutdown protec­tion, 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
Typical Operating Circuit
19-1422; Rev 1; 12/99
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
C2
2.2µF
OUTPUT UP TO 300mA
FAULT­DETECT OUTPUT
INPUT +2.5V TO +6.5V
C1
2.2µF
IN
MAX8860
SHDN
SET
GND
OUT
OUT
FAULT
CC
R1 100k
C3 33nF
MAX8860
Low-Dropout, 300mA Linear Regulator in µMAX
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN= +3.6V, CCC= 33nF, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +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
VIN= +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)
TA= +25°C
MAX8860EUA33
TA= -40°C to +85°C 3.21 3.38
TA= +25°C
MAX8860EUA30
TA= -40°C to +85°C 2.92 3.08
2.95 3.00 3.05
TA= +25°C
MAX8860EUA28
TA= -40°C to +85°C 2.75 2.90
2.78 2.82 2.87
I
OUT
= 0
I
OUT
= 300mA
TA= +25°C
TA= +85°C
SET = OUT
SET = GND
SET Threshold Voltage V
SET = OUT, VIN= +2.5V to +6.5V, I
OUT
= 1mA
1.220 1.275
TA= +25°C
TA= -40°C to +85°C
100µA < I
OUT
< 300mA, VIN= V
OUT
+1V,
SET = GND
TA= +25°C
MAX8860EUA25
TA= +25°C
MAX8860EUA27
TA= -40°C to +85°C
TA= -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
TA= +25°C
VOutput Voltage
MAX8860EUA18
TA= -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)
(VIN= +3.6V, CCC= 33nF, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +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 VIN= 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
VIN= +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
TA= +25°C
TA= +85°C
60
65
TA= +25°C
TA= +85°C
SET = GND, I
OUT
= 200mA mV130 280
FAULT Detection Voltage (Note 5)
Typical Operating Characteristics
(VIN= V
OUT
+ 0.5V, CIN= C
OUT
= 2.2µF, CCC= 33nF, TA= +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)
TA = +85°C
TA = +25°C
TA = -40°C
V
FAULT
= +3.6V
0.5
FAULT Output Off-Leakage Current
TA= +25°C
TA= +85°C
VIL, 2.5V ≤ VIN≤ 5.5V
VIH, 2.5V ≤ VIN≤ 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
nVHz
Output Voltage Noise Density
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