LP3987 Datasheet, PDF (1/17 Pages) National Semiconductor (TI) – Micropower micro SMD 150 mA Ultra Low-Dropout CMOS Voltage Regulators with sleep MODE

February 2003
LP3987
Micropower micro SMD 150 mA Ultra Low-Dropout
CMOS Voltage Regulators with sleep MODE
General Description
The LP3987 is a 150mA fixed output voltage regulator with
very low dropout voltage designed specially to meet require-
ments of battery-powered applications. The additional sleep
MODE feature will reduce current consumption during
standby operation to prolong the usage of battery.
Dropout Voltage: 100mV maximum dropout with 150mA
load.
Shutdown: Less than 1µA quiescent current.
Sleep Mode: Typically 14µA quiescent current during sleep
MODE to reduce battery consumption.
Enhanced Stability: The LP3987 is stable with minimum
1µF±20% low ESR ceramic output capacitor as low as 5mΩ
and high quality tantalum capacitors.
The LP3987 is available in thin and thick 5 Bump micro SMD
package. Performance is specified for −40˚C to 125˚C.
This device is available with output voltage options of 2.6V,
2.8V, & 2.85V. For other voltage options, please contact
National Semiconductor Corporation.
Features
n Miniature 5-I/O micro SMD package
n Stable with ceramic and high quality tantalum output
capacitors
n Logic controlled enable
n Thermal Shutdown and short-circuit current limit
Key Specifications
n 2.7 to 6.0V input range
n Guaranteed 150 mA output current
n 1µA quiescent current on shutdown
n 100 mV maximum dropout with 150 mA load
n 50dB PSRR at 10KHz
n Sleep MODE features
n Over temperature & over current protection
n −40˚C to +125˚C junction temperature range for
operation
Applications
n CDMA cellular handsets
n Wideband CDMA cellular handsets
n GSM cellular handsets
n Portable information appliances
n µP/DSP Power Supplies
n Digital Cameras
n SRAM Backup
Typical Application Circuit
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© 2003 National Semiconductor Corporation DS200222
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