LP38693MP-5.0/NOPB National Semiconductor, LP38693MP-5.0/NOPB Datasheet

IC REG LDO 500MA 5.0V SOT223-4

LP38693MP-5.0/NOPB

Manufacturer Part Number
LP38693MP-5.0/NOPB
Description
IC REG LDO 500MA 5.0V SOT223-4
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of LP38693MP-5.0/NOPB

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 10V
Voltage - Dropout (typical)
0.25V @ 500mA
Number Of Regulators
1
Current - Output
500mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-223 (4 leads + Tab)
For Use With
LP38693-ADJEV - BOARD EVAL 500MA LDO REG ADJLP38693EVAL - BOARD EVALUATION LP38693
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Other names
LP38693MP-5.0
LP38693MP-5.0TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LP38693MP-5.0/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2010 National Semiconductor Corporation
500mA Low Dropout CMOS Linear Regulators
Stable with Ceramic Output Capacitors
General Description
The LP38691/3 low dropout CMOS linear regulators provide
tight output tolerance (2.0% typical), extremely low dropout
voltage (250 mV @ 500mA load current, V
cellent AC performance utilizing ultra low ESR ceramic output
capacitors.
The low thermal resistance of the LLP, SOT-223 and TO-252
packages allow the full operating current to be used even in
high ambient temperature environments.
The use of a PMOS power transistor means that no DC base
drive current is required to bias it allowing ground pin current
to remain below 100 µA regardless of load current, input volt-
age, or operating temperature.
Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out).
Ground Pin Current: 55 µA (typ) at full load.
Precision Output Voltage: 2.0% (25°C) accuracy.
Typical Application Circuits
Note: * Minimum value required for stability.
**LLP package devices only.
201265
OUT
= 5V), and ex-
LP38691
LP38693
Features
Applications
2.0% output accuracy (25°C)
Low dropout voltage: 250 mV @ 500mA (typ, 5V out)
Wide input voltage range (2.7V to 10V)
Precision (trimmed) bandgap reference
Guaranteed specs for -40°C to +125°C
1µA off-state quiescent current
Thermal overload protection
Foldback current limiting
T0-252, SOT-223 and 6-Lead LLP packages
Enable pin (LP38693)
Hard Disk Drives
Notebook Computers
Battery Powered Devices
Portable Instrumentation
20126501
20126502
December 14, 2010
www.national.com

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LP38693MP-5.0/NOPB Summary of contents

Page 1

... Dropout Voltage: 250 mV (typ) @ 500mA (typ. 5V out). Ground Pin Current: 55 µA (typ) at full load. Precision Output Voltage: 2.0% (25°C) accuracy. Typical Application Circuits Note: * Minimum value required for stability. **LLP package devices only. © 2010 National Semiconductor Corporation LP38691 LP38693 Features ■ 2.0% output accuracy (25°C) ■ ...

Page 2

... LLP Only - The DAP (Exposed Pad) functions as a thermal connection when soldered to a copper plane. See www.national.com 20126503 20126505 Description . OUT LLP MOUNTING section in Application Hints 2 20126504 SOT-223, Top View LP38693MP-X.X 20126506 6-Lead LLP, Top View LP38693SD-X.X pins must be tied together IN for more information. ...

Page 3

... LP38691DT-5.0 LP38693SDX-1.8 L128B LP38693SDX-2.5 L129B LP38693SDX-3.3 L130B LP38693SDX-5.0 L131B LP38693MPX-1.8 LJVB LP38693MPX-2.5 LJXB LP38693MPX-3.3 LJYB LP38693MPX-5.0 LJZB For LP38691 Ordering and Availability Information see: http://www.national.com/pf/LP/LP38691.html#Order For LP38693 Ordering and Availability Information see: http://www.national.com/pf/LP/LP38693.html#Order Package Type Package Drawing 6-Lead LLP ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Lead Temp. (Soldering, 5 seconds) ESD Rating (Note 3) Power Dissipation (Note 2) Electrical Characteristics the full operating temperature range. Unless otherwise specified: V limits are guaranteed through testing, statistical correlation, or design ...

Page 5

Symbol Parameter e Output Noise n V (LEAK) Output Leakage Current O V Enable Voltage (LP38693 Only Enable Pin Leakage (LP38693 EN Only) Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. ...

Page 6

Block Diagrams www.national.com FIGURE 1. LP38691 Functional Diagram (LLP) FIGURE 2. LP38691 Functional Diagram (TO-252) 6 20126507 20126508 ...

Page 7

FIGURE 3. LP38693 Functional Diagram (LLP) FIGURE 4. LP38693 Functional Diagram (SOT-223) 7 20126509 20126510 www.national.com ...

Page 8

Typical Performance Characteristics pin is tied to V (LP38693 only OUT Noise vs Frequency Noise vs Frequency Ripple Rejection www.national.com Unless otherwise specified 1.8V +1V 10mA. IN OUT L 20126535 20126537 ...

Page 9

Line Transient Response 20126524 Line Transient Response 20126528 Load Transient Response 20126544 Line Transient Response Load Transient Response V vs Temperature (5.0V) OUT 9 20126526 20126542 20126530 www.national.com ...

Page 10

V vs Temperature (3.3V) OUT V vs Temperature (1.8V) OUT Power-Up OUT IN www.national.com V vs Temperature (2.5V) OUT 20126531 V OUT 20126533 OUT 20126560 10 20126532 vs V (1.8V) IN 20126559 , ...

Page 11

OFF (LP38693 Only) OUT EN 20126562 Load Regulation vs Temperature 20126553 MIN OUT 20126557 Enable Voltage vs Temperature Line Regulation vs Temperature Dropout Voltage 20126552 20126554 OUT 20126556 www.national.com ...

Page 12

Application Hints EXTERNAL CAPACITORS Like any low-dropout regulator, external capacitors are re- quired to assure stability. These capacitors must be correctly selected for proper performance. INPUT CAPACITOR: An input capacitor of at least 1µF is re- quired (ceramic recommended). The ...

Page 13

Using a single point ground technique for the regulator and it’s capacitors fixed the problem. Since high current flows through the traces going into V and coming from V IN Kelvin connect the capacitor leads to these pins so ...

Page 14

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 6-lead, LLP Package NS Package Number SDE06A TO-252 Package NS Package Number TD03B 14 ...

Page 15

SOT-223 Package NS Package Number MP05A 15 www.national.com ...

Page 16

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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