MAX8862TESE ,Low-cost, low-dropout, dual linear regulator. Fixed output voltage 3.175VELECTRICAL CHARACTERISTICS (Notes 2, 3)(V = V + 1V, T = 0°C to +85°C, unless otherwise noted. Typic ..
MAX8862TESE+ ,Low-Cost, Low-Dropout, Dual Linear RegulatorApplicationsL 4.95Cellular Phones Cordless Phones T 3.175R 2.85PCS Phones PCMCIA CardsModems Hand-H ..
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_ d9
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MAX8862LESE-MAX8862TESE
Low-cost, low-dropout, dual linear regulator. Fixed output voltage 4.95V
_______________General DescriptionThe MAX8862 low-cost, low-dropout, dual linear voltage
regulator is ideal for battery-powered and portable
applications. The regulators have independent supply
inputs and provide 250mA and 100mA, respectively,
with a full-load dropout voltage of 160mV. Both regula-
tors use P-channel MOSFET pass transistors and main-
tain low quiescent current independent of load current.
In dropout, the MOSFET does not suffer from excessive
base currents, as do saturated PNP transistors.
The MAX8862 output voltage is preset to 4.95V (L),
3.175V (T), or 2.85V (R). This device employs Dual
Mode™ operation, allowing user-adjustable outputs
from +2V to +11V with external resistors. The input
supply-voltage range is 2.5V to 11.5V. Other features
include independent shutdown, power-good indicator,
short-circuit and reverse-battery protection, and ther-
mal shutdown.
The MAX8862’s regulators are ideal power supplies for
the radio and the microcontroller (µC) used in digital,
cordless, and PCS phones. The main regulator is opti-
mized for superior transient and dynamic response,
while the secondary regulator exhibits low-output, wide-
band noise.
The MAX8862 comes in a 16-pin SO package with a
lead frame that uses multiple GND pins as a heat sink
for additional thermal dissipation.
________________________ApplicationsCellular PhonesCordless Phones
PCS PhonesPCMCIA Cards
ModemsHand-Held Instruments
Electronic Planners
____________________________FeaturesLow CostGuaranteed 250mA and 100mA Output Currents,
with Current LimitingDual Mode Operation:
Fixed or Adjustable Output from +2V to +11V+2.5V to +11.5V Input Range160mV Dropout Voltage at 200mA Output CurrentLow Supply Current—Even in Dropout
200µA Operating
<1µA ShutdownPower-Good IndicatorReverse-Battery ProtectionThermal Overload Protection
MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator
________________________________________________________________Maxim Integrated Products1
__________________Pin Configuration
__________Typical Operating Circuit19-1117; Rev 0; 8/96
blank to complete the part number.
& the latest literature: http://, Dual Mode is a trademark of Maxim Integrated Products.
MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS (Notes 2, 3)(VIN_= VOUT_(TYP)+ 1V, TA
= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°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.
IN1, IN2 to GND (Note 1).....................................................±12V
SET1, SHDN1, PWROK1 to GND..............-0.3V to (VIN1+ 0.3V)
SET2,SHDN2, REF2 to GND.......................-0.3V, (VIN2+ 0.3V)
Output Short-Circuit Duration............................................Infinite
Continuous Power Dissipation (TA= +70°C)
16-Pin Narrow SO (derate 20mW/°C above +70°C)...............1W
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec)............................+300°C
Note 1:Connect SHDN1to IN1 and SHDN2to IN2 through 20kΩresistors to limit current flow in case a battery is reversed.
MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator
_______________________________________________________________________________________3
ELECTRICAL CHARACTERISTICS (Notes 2, 3)(VIN_= VOUT_(TYP)+ 1V, TA
= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS (Notes 2, 3)(VIN_= VOUT_(TYP)+ 1V, TA
= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (Notes 2, 3) (continued)(VIN_= VOUT_(TYP)+ 1V, TA
= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
Note 2:Guaranteed by design for TA= -40°C.
Note 3:Guaranteed for a junction temperature (TJ) equal to the operating temperature range. E-grade parts are guaranteed by
design to operate up to TJ= +125°C. For TJabove +125°C, specifications exceed the operating limits.
Note 4:Dropout voltage is (VIN_ - VOUT_) when VOUT_ falls to 100mV below its nominal value at VIN_ = (VOUT_ + 1V). For example,
the MAX8862 is tested by measuring the VOUT_ at (VIN_= 5.95V for the MAX8862L, VIN_= 4.175V for the MAX8862T, and
VIN_= 3.85V for the MAX8862R) then VIN_is lowered until VOUT_falls 100mV below the measured value.
MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator
_______________________________________________________________________________________5QUIESCENT CURRENT
vs. LOAD CURRENT
MAX8862 TOC03
LOAD CURRENT (mA)
QUIESCENT CURRENT (µA)
0.010.110100
SHUTDOWN CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
SHUTDOWN CURRENT (nA)20
MAX8862 TOC01
QUIESCENT CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
QUIESCENT CURRENT (µA)140
MAX8862 TOC02
MAX8862T
OUTPUT VOLTAGE & QUIESCENT CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)356
MAX8862TOC05101112
QUIESCENT CURRENT (µA)
DROPOUT VOLTAGE
vs. LOAD CURRENT
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
OUTPUT VOLTAGE
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
MAX8862TOC06100
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8862TOC04
LOAD CURRENT (mA)
NORMALIZED OUTPUT VOLTAGE (%)
__________________________________________Typical Operating Characteristics
(VIN1= VIN2= 5.3V, CIN1= CIN2= 1µF, COUT1= 3.3µF, COUT2= 2.2µF, SHDN1= IN1, SHDN2= IN2. TA= +25°C, unless
otherwise noted.)
MAX8862
Low-Cost, Low-Dropout, Dual Linear Regulator_______________________________________________________________________________________
____________________________Typical Operating Characteristics (continued)(VIN1= VIN2= 5.3V, CIN1= CIN2= 1µF, COUT1= 3.3µF, COUT2= 2.2µF, SHDN1= IN1, SHDN2= IN2. TA= +25°C, unless