Linear Regulators. MAX8866R Datasheet

MAX8866R Datasheet PDF, Equivalent


Part Number

MAX8866R

Description

100mA Linear Regulators

Manufacture

Maxim Integrated

Total Page 12 Pages
PDF Download
Download MAX8866R Datasheet


MAX8866R Datasheet
19-0485; Rev 0; 4/96
Dual, Low-Dropout, 100mA Linear Regulators
_______________General Description
The MAX8865 and MAX8866 dual, low-dropout linear
regulators operate from a +2.5V to +5.5V input range
and deliver up to 100mA. At 200mA total load, the
PMOS pass transistors keep the supply current at
145µA, making these devices ideal for battery-operated
portable equipment such as cellular phones, cordless
phones, and modems.
The devices feature Dual Mode™ operation: their out-
put voltages are preset (at 3.15V for the “T” versions,
2.84V for the “S” versions, or 2.80V for the “R” versions)
or can be adjusted with external resistor dividers. Other
features include independent low-power shutdown,
short-circuit protection, thermal shutdown protection,
and reverse battery protection. The MAX8866 also
includes an auto-discharge function, which actively dis-
charges the selected output voltage to ground when
the device is placed in shutdown mode. Both devices
come in a miniature 8-pin µMAX package.
____________________________Features
o Low Cost
o Low, 55mV Dropout Voltage @ 50mA IOUT
o Low, 105µA No-Load Supply Current
o Low, 145µA Operating Supply Current (even in
dropout)
o Low, 350µVRMS Output Noise
o Independent, Low-Current Shutdown Control
o Thermal Overload Protection
o Output Current Limit
o Reverse Battery Protection
o Dual Mode Operation: Fixed or Adjustable (1.25V
to 5.5V) Outputs
________________________Applications
Cordless Telephones
Modems
PCS Telephones
Hand-Held Instruments
Cellular Telephones
Palmtop Computers
PCMCIA Cards
Electronic Planners
______________Ordering Information
PART
MAX8865TEUA
MAX8865SEUA
MAX8865REUA
MAX8866TEUA
MAX8866SEUA
MAX8866REUA
TEMP. RANGE
PIN-
PACKAGE
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
-40°C to +85°C 8 µMAX
PRESET
VOUT (V)
3.15
2.84
2.80
3.15
2.84
2.80
__________Typical Operating Circuit
BATTERY
CIN
2µF
SHDN2
OUT1
IN OUT2
MAX8865
MAX8866
SHDN1
SHDN2
GND SET1 SET2
COUT1
1µF
OUTPUT
VOLTAGE 1
OUTPUT
VOLTAGE 2
COUT2
1µF
__________________Pin Configuration
TOP VIEW
OUT1 1
IN 2
GND 3
OUT2 4
MAX8865
MAX8866
µMAX
8 SET1
7 SHDN1
6 SHDN2
5 SET2
Dual Mode is a trademark of Maxim Integrated Products.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX8866R Datasheet
Dual, Low-Dropout, 100mA Linear Regulators
ABSOLUTE MAXIMUM RATINGS
VIN to GND ..................................................................-6V to +6V
Output Short-Circuit Duration ............................................Infinite
SET_ to GND ............................................................-0.3V to +6V
SHDN__ to GND ............................................................-6V to +6V
SHDN__ to IN .............................................................-6V to +0.3V
OUT_ to GND...............................................-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (TA = +70°C)
µMAX (derate 4.1mW/°C above +70°C)......................330mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Thermal Resistance (θJA)...............................................244°C/W
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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.
ELECTRICAL CHARACTERISTICS
(VIN = +3.6V, GND = 0V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Voltage (Note 1)
Output Voltage
SYMBOL
VIN
VOUT_
Adjustable Output Voltage
Range (Note 2)
Maximum Output Current
Current Limit (Note 3)
Ground Pin Current
Dropout Voltage (Note 4)
VOUT_
ILIM
IQ
Line Regulation
VLNR
Load Regulation
VLDR
Output Voltage Noise
SHUTDOWN
SHDN Input Threshold
SHDN Input Bias Current
Shutdown Supply Current
VIH
VIL
I SHDN__
IQ SHDN
Shutdown to Output
Discharge Delay (MAX8866)
SET INPUT
SET Reference Voltage (Note 2) VSET_
SET Input Leakage Current
(Note 2)
ISET_
THERMAL PROTECTION
Thermal Shutdown Temperature TSHDN
Thermal Shutdown Hysteresis TSHDN
CONDITIONS
0mA IOUT 50mA,
SET_ = GND
MAX886_T
MAX886_S
MAX886_R
SET_ = GND
IOUT = 1mA
IOUT = 50mA
IOUT_ = 0mA
IOUT_ = 50mA
VIN = 2.5V to 5.5V, SET_ tied to OUT_,
IOUT_ = 1mA
SET_ = GND
IOUT_ = 0mA to 50mA SET_ tied to OUT_
10Hz to 1MHz
COUT = 1µF
COUT = 100µF
V SHDN__ = VIN
VOUT_ = 0V
COUT = 1µF, no load
VIN = 2.5V to 5.5V, IOUT_ = 1mA
VSET_ = 1.3V
MIN
2.5
3.08
2.77
2.73
VSET_
100
-0.10
TYP
3.15
2.84
2.80
220
105
145
1.1
55
0
0.012
0.006
350
220
2.0
0
0.16
1
1.222
1.25
0.015
170
20
MAX
5.5
3.24
2.91
2.87
UNITS
V
V
5.5 V
mA
mA
270
µA
mV
120
0.10 %/V
0.03
%/mA
µVRMS
0.4
1000
3000
V
nA
nA
ms
1.276
50
V
nA
°C
°C
2 _______________________________________________________________________________________


Features Datasheet pdf 19-0485; Rev 0; 4/96 Dual, Low-Dropout, 100mA Linear Regulators MAX8865T/S/R, MAX8866T/S/R _______________General De scription The MAX8865 and MAX8866 dual, low-dropout linear regulators operate from a +2.5V to +5.5V input range and d eliver up to 100mA. At 200mA total load , the PMOS pass transistors keep the su pply current at 145µA, making these de vices ideal for battery-operated portab le equipment such as cellular phones, c ordless phones, and modems. The devices feature Dual Mode™ operation: their output voltages are preset (at 3.15V fo r the “T” versions, 2.84V for the S” versions, or 2.80V for the “R versions) or can be adjusted with ex ternal resistor dividers. Other feature s include independent low-power shutdow n, short-circuit protection, thermal sh utdown protection, and reverse battery protection. The MAX8866 also includes a n auto-discharge function, which active ly discharges the selected output volta ge to ground when the device is placed in shutdown mode. Both d.
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