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LP3985ITLX-3.0 Datasheet(PDF) 2 Page - Texas Instruments

Part # LP3985ITLX-3.0
Description  LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LP3985ITLX-3.0 Datasheet(HTML) 2 Page - Texas Instruments

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background image
R2
GND
Fast Turn
On Circuit
Vreference
1.23V
Over Current &
Thermal Protection
VIN
VEN
Bypass
VOUT
R1
1.40V
ON
t
0.4V
OFF
d
LP3985
SNVS087AC – OCTOBER 2000 – REVISED MAY 2013
www.ti.com
DESCRIPTION (CONTINUED)
The LP3985 is available in a 5-bump thin DSBGA and a 5-pin USON package. Performance is specified for
−40°C to +125°C temperature range and is available in 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V. 3.1V, 3.2V,
3.3V, 4.7V, 4.75V, 4.8V and 5.0V output voltages. For other output voltage options between 2.5V to 5.0V or for a
dual LP3985, please contact a Texas Instruments sales office.
Block Diagram
Figure 2.
PIN DESCRIPTIONS
Name
* DSBGA
USON
Function
VEN
A1
3
Enable Input Logic, Enable High
GND
B2
2
Common Ground
VOUT
C1
5
Output Voltage of the LDO
VIN
C3
1
Input Voltage of the LDO
BYPASS
A3
4
Optional Bypass Capacitor for Noise Reduction
Connection Diagram
Figure 3. Top View USON 5-Pin Package
Figure 4. Top View 5-Bump DSBGA Package
Package Number MF05A
Package Number TLA05
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
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Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LP3985


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