LP5951MG-1.8 Datasheet, PDF (1/26 Pages) Texas Instruments – LP5951 Micropower, 150mA Low-Dropout CMOS Voltage Regulator

LP5951
www.ti.com
SNVS345F – JUNE 2006 – REVISED MAY 2013
LP5951 Micropower, 150mA Low-Dropout CMOS Voltage Regulator
Check for Samples: LP5951
FEATURES
1
•2 Excellent Line Transient Response: ±2mV typ.
• Excellent PSRR: -60dB at 1kHz typ.
• Low Quiescent Current of 29µA typ.
• 1.8 to 5.5V Input Voltage Range
• Small SC70-5 and SOT-23-5 Packages
• Fast Turn-on Time of 30µs typ.
• Typ. < 1nA Quiescent Current in Shutdown
• Ensured 150mA Output Current
• Output Voltage Range: 1.3V to 3.7V
• Logic Controlled Enable 0.4V/0.9V
• Good Load Transient Response of 50mVpp
typ.
• Thermal-overload and Short-circuit Protection
• -40°C to +125°C Junction Temperature Range
APPLICATIONS
• General Purpose
DESCRIPTION
The LP5951 regulator is designed to meet the
requirements of portable, battery-powered systems
providing a regulated output voltage and low
quiescent current. When switched to shutdown mode
via a logic signal at the Enable pin, the power
consumption is reduced to virtually zero.
The LP5951 is designed to be stable with small 1µF
ceramic capacitors.
The LP5951 also features internal protection against
short-circuit currents and over-temperature
conditions.
Performance is specified for a -40°C to 125°C
temperature range.
The device is available in SOT-23-5 and SC70-5
package.
The device is available in fixed output voltages in the
range of 1.3V to 3.7V. For availability, please contact
your local TI sales office.
Typical Application Circuit
V_IN
1 PF
Enable Control,
active high
LP5951
1 _VIN
V_OUT ⁵
3
V_EN
4
NC
GND
2
1 PF
Load
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2013, Texas Instruments Incorporated