IC REG LDO CMOS 150MA SOT23-5

 

FAN2535S26X

Manufacturer Part NumberFAN2535S26X
DescriptionIC REG LDO CMOS 150MA SOT23-5
ManufacturerFairchild Semiconductor
FAN2535S26X datasheets

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Specifications of FAN2535S26X

Regulator TopologyPositive FixedVoltage - Output2.6V
Voltage - Input2.78 ~ 6.5 VNumber Of Regulators1
Current - Output150mACurrent - Limit (min)300mA
Operating Temperature-65°C ~ 150°CMounting TypeSurface Mount
Package / CaseSOT-23-5, SC-74A, SOT-25Lead Free Status / RoHS StatusLead free / RoHS Compliant
Voltage - Dropout (typical)-  
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FAN2534/FAN2535
150 mA CMOS LDO Regulator with Fast Start, Enable
Features
• 70dB Ripple rejection ( >45dB up to 1MHz)
• 150µsec Power On Time
• 150µsec Enable Time
• Low noise - 50µVrms
• Enable optimized for CDMA time slices
• 180 mV dropout voltage at 150 mA
• Enable/Shutdown Control
• Enable time independent of noise bypass capacitor value
• SOT23-5 package
• Thermal limiting
• 300 mA trimmed current limit
Applications
• Cellular Phones and accessories
• PDAs
• Portable cameras and video recorders
• Laptop, notebook and palmtop computers
Description
The FAN2534/FAN2535 family of micropower low-dropout
voltage regulators utilize CMOS technology to offer a new
level of cost-effective performance in GSM, TDMA, and
CDMA cellular handsets, laptop and notebook computers,
and other portable devices. Proprietary design technics
ensure high ripple rejection. Other features include low
noise, short circuit current limit, thermal shutdown circuit,
Block Diagrams
EN
V IN
Bandgap
p
Error
Amplifier
V OUT
ADJ
Thermal
GND
Sense
FAN2534
low dropout voltage, fast enable required in CDMA handset
applications, exceptional loop stability to accommodate a
wide variety of external capacitors, and a compact SOT23-5
surface-mount package. These products offer significant
improvements over older Bipolar and CMOS designs and are
pin-compatible with many popular devices.
The FAN2534 and FAN2535 devices are distinguished by
the assignment of pin 4:
FAN2534: pin 4 – ADJ, allowing the user to adjust the
output voltage over a wide range using an external voltage
divider.
FAN2534-XX: pin 4 – BYP, to which a bypass capacitor
may be connected for optimal noise performance. Output
voltage is fixed, as specified by the suffix XX.
FAN2535-XX: pin 4 – ERR, a flag which indicates that the
output voltage has dropped below the specified minimum
due to a fault condition.
The standard fixed output voltages available are 2.6V, 2.85V,
and 3.0V . Custom output voltages are also available: please
contact your local Fairchild Sales Office for information.
EN
V IN
BYP
Bandgap
p
Error
Amplifier
V OUT
Thermal
Sense
GND
FAN2534-XX
www.fairchildsemi.com
EN
V IN
ERR
Bandgap
p
Error
Amplifier
V OUT
Thermal
Sense
GND
FAN2535-XX
REV. 1.0.2 8/26/03

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FAN2535S26X Summary of contents

  • Page 1

    FAN2534/FAN2535 150 mA CMOS LDO Regulator with Fast Start, Enable Features • 70dB Ripple rejection ( >45dB up to 1MHz) • 150µsec Power On Time • 150µsec Enable Time • Low noise - 50µVrms • Enable optimized for CDMA time ...

  • Page 2

    FAN2534/FAN2535 Pin Assignments Pin No. FAN2534 Pin Descriptions Pin Name Pin No. Type ADJ 4 Input BYP 4 Passive ERR 4 Open drain EN 3 Digital Input V 1 Power Power ...

  • Page 3

    PRODUCT SPECIFICATION Operating Conditions Symbol Parameter V Input Voltage Range IN V Output Voltage Range OUT FAN2534-XX, FAN2535-XX (Note 3) V Output Voltage Range (FAN2534 only) OUT V Enable Input Voltage EN V ERR Flag Voltage ERR T Junction Temperature ...

  • Page 4

    FAN2534/FAN2535 Switching Characteristics Parameter Enable Response time (Note 8) Power "ON" Response time Error Flag Response time (FAN2535-XX only) AC Performance Characteristics Symbol Parameter V / Line regulation V OUT Load regulation I OUT OUT ...

  • Page 5

    PRODUCT SPECIFICATION Functional Description Utilizing CMOS technology, the FAN2534/FAN2535 product family is optimized for use in compact battery powered systems, offering a unique combination of high ripple rejection, low noise, low power consumption, extremely low dropout voltages, high tolerance for ...

  • Page 6

    FAN2534/FAN2535 Control Functions Enable Pin Connecting 2.0V or greater to the Enable pin will enable the output, while 0.4V or less will disable it while reducing the quiescent current consumption to less than 1µA. If this shutdown function is not ...

  • Page 7

    PRODUCT SPECIFICATION General PWB Layout Considerations For optimum device performance, careful circuit layout and grounding technics must be used. Establishing a small local ground, to which the GND pin, and the output and bypass capacitors are connected, is recommended, while ...

  • Page 8

    FAN2534/FAN2535 Typical Performance Characteristics Enable Delay 3 10nF, out byp I = 150mA load Enable Delay = 152 Sec V OUT Power on Delay 3 10nF, ...

  • Page 9

    PRODUCT SPECIFICATION Typical Performance Characteristics V Variation vs OUT Ambient Temperature 0.6 0.4 0.2 I load 0.0 -0.2 -0.4 -0.6 -0.8 - Ambient Temperature ( C) Dropout Voltage vs Load Current 160 140 120 ...

  • Page 10

    FAN2534/FAN2535 Mechanical Dimensions 5-Lead SOT-23 Package PRODUCT SPECIFICATION Symbol Inches Millimeters Min Max Min A .035 .057 .90 A1 .000 .006 .00 B .008 .020 .20 c .003 .010 .08 D ...

  • Page 11

    ... PRODUCT SPECIFICATION Output Voltage Options and Ordering Information Product Number FAN2534SX FAN2534S26X FAN2534S30X FAN2535S26X FAN2535S285X Tape and Reel Information Quantity 3000 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN ...

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