LP3990-Q1 Datasheet, PDF (1/22 Pages) Texas Instruments – 150-mA Linear Voltage Regulator for Digital Applications

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LP3990-Q1
SNVSA66A – OCTOBER 2014 – REVISED DECEMBER 2015
LP3990-Q1 150-mA Linear Voltage Regulator for Digital Applications
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
• Input Voltage Range: 2 V to 6 V
• 1% Voltage Accuracy at Room Temperature
• Output Voltage Range: 0.8 V to 3.3 V
• Output Current: 150 mA
• Logic Controlled Enable
• Thermal-Overload and Short-Circuit Protection
• Virtually Zero I_Q (Disabled), < 10 nA
• Very Low I_Q (Enabled): 43 µA
• Low Output Noise: 150 µV_RMS
• PSRR: 55 dB at 1 kHz
• Fast Start-Up: 105 µs
• Stable with Ceramic Capacitor
• Output Stable - Capacitors, 1 µF
• No Noise Bypass Capacitor Required
3 Description
The LP3990-Q1 regulator is designed to meet the
requirements of portable, battery-powered systems
providing an accurate output voltage, low-noise, and
low-quiescent current. The LP3990-Q1 will provide a
0.8-V output from the low input voltage of 2 V at up to
a 150-mA load current. When switched into shutdown
mode via a logic signal at the enable pin (EN), the
power consumption is reduced to virtually zero.
The LP3990-Q1 is designed to be stable with space-
saving ceramic capacitors with values as low as 1 µF.
Performance is specified for a –40°C to +125°C
junction temperature range.
For output voltage options please refer to package
option addendum (POA) or contact the Texas
Instruments Sales Office.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE
LP3990-Q1
DSBGA (4) 1.324 mm x 1.045 mm (MAX)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
• Infotainment
• Instrumentation
• Body Electronics
Simplified Schematic
V_IN
IN
OUT
V_OUT
V_EN
GND
C_IN
1 µF
ON
OFF
LP3990
EN
GND
C_OUT
1 µF
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.