LP38690DT-3.3 National Semiconductor, LP38690DT-3.3 Datasheet

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LP38690DT-3.3

Manufacturer Part Number
LP38690DT-3.3
Description
IC,VOLT REGULATOR,FIXED,+3.3V,CMOS,SIP,3PIN,PLASTIC
Manufacturer
National Semiconductor
Datasheet

Specifications of LP38690DT-3.3

Rohs Compliant
NO

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
LP38690DT-3.3
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LP38690DT-3.3/NOPB
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© 2005 National Semiconductor Corporation
LP38690/LP38692
1A Low Dropout CMOS Linear Regulators
Stable with Ceramic Output Capacitors
General Description
The LP38690/2 low dropout CMOS linear regulators provide
tight output tolerance (2.5% typical), extremely low dropout
voltage (450mV
lent AC performance utilizing ultra low ESR ceramic output
capacitors.
The low thermal resistance of the LLP, SOT-223 and T0-252
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
voltage, or operating temperature.
Dropout Voltage: 450 mV (typ)
Ground Pin Current: 55 µA (typ) at full load.
Precision Output Voltage: 2.5% (25˚C) accuracy.
Typical Application Circuits
Note: * Minimum value required for stability.
**LLP package devices only.
@
1A load current, V
@
1A (typ. 5V out).
OUT
DS201266
= 5V), and excel-
Features
n 2.5% output accuracy (25˚C)
n Low dropout voltage: 450mV
n Wide input voltage range (2.7V to 10V)
n Precision (trimmed) bandgap reference
n Guaranteed specs for -40˚C to +125˚C
n 1µA off-state quiescent current
n Thermal overload protection
n Foldback current limiting
n T0-252, SOT-223 and 6-Lead LLP packages
n Enable pin (LP38692)
Applications
n Hard Disk Drives
n Notebook Computers
n Battery Powered Devices
n Portable Instrumentation
20126601
20126602
@
1A (typ, 5V out)
www.national.com
May 2005

Related parts for LP38690DT-3.3

LP38690DT-3.3 Summary of contents

Page 1

... Ground Pin Current: 55 µA (typ) at full load. Precision Output Voltage: 2.5% (25˚C) accuracy. Typical Application Circuits Note: * Minimum value required for stability. **LLP package devices only. © 2005 National Semiconductor Corporation Features n 2.5% output accuracy (25˚C) n Low dropout voltage: 450mV = 5V), and excel- n Wide input voltage range (2 ...

Page 2

... Regulated output voltage. OUT Ordering Information Order Number Package Marking LP38690SD-1.8 L113B LP38690SD-2.5 L114B LP38690SD-3.3 L115B LP38690SD-5.0 L116B LP38690DT-1.8 LP38690DT-1.8 LP38690DT-2.5 LP38690DT-2.5 LP38690DT-3.3 LP38690DT-3.3 LP38690DT-5.0 LP38690DT-5.0 LP38692SD-1.8 L123B LP38692SD-2.5 L124B LP38692SD-3.3 L125B LP38692SD-5.0 L126B LP38692MP-1.8 LJPB www.national.com 20126603 DESCRIPTION . OUT Package Type ...

Page 3

... Package Marking LP38692MP-2.5 LJRB LP38692MP-3.3 LJSB LP38692MP-5.0 LJTB LP38690SDX-1.8 L113B LP38690SDX-2.5 L114B LP38690SDX-3.3 L115B LP38690SDX-5.0 L116B LP38690DTX-1.8 LP38690DT-1.8 LP38690DTX-2.5 LP38690DT-2.5 LP38690DTX-3.3 LP38690DT-3.3 LP38690DTX-5.0 LP38690DT-5.0 LP38692SDX-1.8 L123B LP38692SDX-2.5 L124B LP38692SDX-3.3 L125B LP38692SDX-5.0 L126B LP38692MPX-1.8 LJPB LP38692MPX-2.5 LJRB LP38692MPX-3.3 LJSB LP38692MPX-5.0 LJTB Package Type ...

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) V(max) All pins (with respect to GND) Electrical Characteristics over the full operating temperature range ...

Page 5

Electrical Characteristics over the full operating temperature range. Unless otherwise specified: V Min/Max limits are guaranteed through testing, statistical correlation, or design. (Continued) Symbol Parameter e Output Noise n V (LEAK) Output Leakage Current O V Enable Voltage (LP38692 Only) ...

Page 6

Block Diagrams www.national.com FIGURE 1. LP38690 Functional Diagram (LLP) FIGURE 2. LP38690 Functional Diagram (TO-252) 6 20126607 20126608 ...

Page 7

Block Diagrams (Continued) FIGURE 4. LP38692 Functional Diagram (SOT-223) FIGURE 3. LP38692 Functional Diagram (LLP) 7 20126609 20126610 www.national.com ...

Page 8

Typical Performance Characteristics enable pin is tied to V (LP38692 only Noise vs Frequency Noise vs Frequency Ripple Rejection www.national.com Unless otherwise specified 1.8V +1V 10mA. OUT IN OUT L 20126635 ...

Page 9

Typical Performance Characteristics enable pin is tied to V (LP38692 only Line Transient Response Line Transient Response Load Transient Response Unless otherwise specified 1.8V +1V 10mA. (Continued) OUT IN OUT L ...

Page 10

Typical Performance Characteristics enable pin is tied to V (LP38692 only Load Transient Response V vs Temperature (5.0V) OUT V vs Temperature (2.5V) OUT www.national.com Unless otherwise specified 1.8V +1V 10mA. ...

Page 11

Typical Performance Characteristics enable pin is tied to V (LP38692 only Dropout Voltage vs I Enable Voltage vs Temperature Line Regulation vs Temperature Unless otherwise specified 1.8V +1V 10mA. (Continued) OUT ...

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 required (ceramic recommended). The capacitor ...

Page 13

Application Hints (Continued) OUTPUT NOISE Noise is specified in two ways: Spot Noise or Output Noise Density is the RMS sum of all noise sources, measured at the regulator output specific frequency (measured with a 1Hz bandwidth). This ...

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

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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