LP3988-Q1_15 Datasheet, PDF (1/17 Pages) Texas Instruments – Micropower, 150-mA Ultralow-Dropout CMOS Voltage Regulator With Power Good

LP3988-Q1
www.ti.com
SLAS928A – MARCH 2013 – REVISED JULY 2013
Micropower, 150-mA Ultralow-Dropout CMOS Voltage Regulator With Power Good
Check for Samples: LP3988-Q1
FEATURES
1
•2 Qualified for Automotive Applications
• AEC-Q100 Test Guidance With the Following
Results:
– Device Temperature Grade 1: –40°C to
125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C4B
• SOT-23-5 Package
• Power-Good Flag Output
• Logic-Controlled Enable
• Stable With Ceramic and High Quality
Tantalum Capacitors
• Fast Turnon
• Thermal Shutdown and Short-Circuit Current
Limit
APPLICATIONS
• Automotive
• CDMA Cellular Handsets
• Wideband CDMA Cellular Handsets
• GSM Cellular Handsets
• Portable Information Appliances
• Tiny 3.3-V ± 5% to 2.85-V, 150-mA Converter
DESCRIPTION
The LP3988-Q1 is a 150-mA low-dropout regulator
designed specially to meet requirements of portable
battery applications. The LP3988-Q1 works with a
space-saving, 1-µF ceramic capacitor. The LP3988-
Q1 features an error flag-output that indicates a faulty
output condition.
The LP3988-Q1 has performance optimized for
battery-powered systems to deliver low noise,
extremely low dropout voltage, and low quiescent
current. Regulator ground current increases only
slightly in dropout, further prolonging the battery life.
Power-supply rejection is better than 60 dB at low
frequencies and starts to roll off at 10 kHz. The
device maintains high power-supply rejection down to
lower input voltage levels common to battery-
operated circuits.
The device is ideal for mobile phone and similar
battery-powered wireless applications. It provides up
to 150 mA, from a 2.5-V to 6-V input, consuming less
than 1 µA in disable mode, and has fast turnon time
less than 200 µs.
The LP3988-Q1 is available in a 5-pin SOT-23
package, has performance specified for the −40°C to
125°C temperature range, and is available in 2.85-V
output voltages. Note: For other voltage options,
please contact TI sales.
Typical Application Circuit
(C3)
1F
1
V_IN
5
V_OUT
LP3988-Q1
(C1)
1F
(A1) 3
V_EN
POWER ^{4 (A3)}
GOOD
2 (B2)
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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 © 2013, Texas Instruments Incorporated