TC2117-1.8DB MICROCHIP [Microchip Technology], TC2117-1.8DB Datasheet

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TC2117-1.8DB

Manufacturer Part Number
TC2117-1.8DB
Description
800 mA Fixed Low Dropout Positive Regulator
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
Features
• Fixed Output Voltages: 1.8V, 2.5V, 3.0V, 3.3V
• Very Low Dropout Voltage
• Rated 800 mA Output Current
• High Output Voltage Accuracy
• Standard or Custom Output Voltages
• Overcurrent and Overtemperature Protection
• Space Saving SOT-223 Package
Applications
• 5V to 3.3V Linear Regulator
• Portable Computers
• Instrumentation
• Battery Operated Systems
• Linear Post-Regulator for SMPS
• Core Voltage Supply for FPGAs, PLDs, CPUs,
Typical Application
© 2006 Microchip Technology Inc.
Battery
DSPs
800 mA Fixed Low Dropout Positive Regulator
C
1µF
1
V
GND
IN
TC2117
V
OUT
C
1µF
2
V
OUT
General Description
The TC2117 is a fixed, high accuracy (typically ±0.5%)
CMOS low dropout regulator. Designed specifically for
battery operated systems, the TC2117’s CMOS
construction
significantly extending battery life. Total supply current
is typically 80 µA at full load (20 to 60 times lower than
in bipolar regulators).
TC2117 key features include ultra low noise, very low
dropout voltage (typically 450 mV at full load), and fast
response to step changes in load. The TC2117
incorporates both overtemperature and overcurrent
protection. The TC2117 is stable with an output
capacitor of only 1µF and has a maximum output
current of 800 mA. This device is available in 3-Pin
SOT-223, and 3-Pin DDPAK packages.
Package Types
3-Pin SOT-223
Front View
TC2117
eliminates
V
V
GND
OUT
IN
TC2117
wasted
3-Pin DDPAK
Front View
1
TC2117
2
ground
DS21665C-page 1
3
Tab is V
current,
OUT

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TC2117-1.8DB Summary of contents

Page 1

... Total supply current is typically 80 µA at full load ( times lower than in bipolar regulators). TC2117 key features include ultra low noise, very low dropout voltage (typically 450 mV at full load), and fast response to step changes in load. The TC2117 incorporates both overtemperature and overcurrent protection ...

Page 2

... TC2117 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† Input Voltage .........................................................6.5V Output Voltage.................... (V – 0. Power Dissipation................Internally Limited (Note 7) Maximum Voltage on Any Pin .........V IN Operating Temperature ............... -40°C < T Storage temperature ..........................-65°C to +150°C DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V Boldface type specifications apply for junction temperatures of -40°C to +125°C. ...

Page 3

... Sym Min Typ Max T -40 — +125 A T -40 — +125 J T -65 — +150 A θ — 59 — JA θ — 71 — exceed Maximum Junction Temperature (+125°C). J TC2117 , T = +25° Units Conditions °C (Note 1) °C °C °C/W °C/W DS21665C-page 3 ...

Page 4

... TC2117 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...

Page 5

... Power Supply Rejection Ratio OUT OUT 50 mV/DIV 600 mA/DIV FIGURE 2-8: Load Step Response. © 2006 Microchip Technology Inc. 100k 1M FIGURE 2-9: =4.0V =3.0V =1 µF Ceramic =10 µF Ta TC2117 I =300 mA OUT V =4. =10 µF Tantalum (0.25Ω ESR) OUT C = OUT 50 mV/DIV Line Step Response DS21665C-page 5 ...

Page 6

... TC2117 3.0 PIN DESCRIPTIONS The descriptions for the pins are listed in TABLE 3-1: PIN FUNCTION TABLE Pin No. (3-Pin SOT-223) Symbol (3-Pin DDPAK) 1 GND Ground Terminal Regulated output voltage. OUT 3 V Unregulated Supply input. IN 3.1 Ground (GND) Ground terminal. 3.2 Regulated Output Voltage (V Regulated voltage output. ...

Page 7

... DETAILED DESCRIPTION The TC2117 is a precision, positive output LDO. Unlike bipolar regulators, the TC2117 supply current does not increase proportionally with load current. In addition, V remains stable and within regulation over the OUT entire 800 mA operating load range. FIGURE 4-1: TYPICAL APPLICATION ...

Page 8

... J A MAX MAX MAX θ (125 – 55 1.186W In this example, the TC2117 dissipates a maximum of only 786 mW; below the allowable limit of 1.186W similar manner, Equation 4-1 and Equation 4-2 used to calculate maximum current and/or input volt- age limits. DS21665C-page 8 Thermal Resistance (θ ...

Page 9

... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2006 Microchip Technology Inc. TC2117 Example TC2117 1.8VEB^^ e 0643256 Example 2117-25 VDB0643 256 ...

Page 10

... TC2117 3-Lead Plastic (EB) (DDPAK) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging TOP VIEW Dimension Limits Number of Pins Pitch Overall Height Standoff § Overall Width Exposed Pad Width Molded Package Length ...

Page 11

... E1 .130 .138 .146 D .248 .256 .264 c .009 .012 .014 b .026 .030 .033 b2 .114 .118 .124 L .035 – – φ 0° – 10° α 10° – 16° β 10° – 16° TC2117 c MILLIMETERS* MIN NOM MAX 2.30 BSC 4.60 BSC – – 1.80 0.02 – 0.10 1.55 1.60 1.65 6.70 7.00 7.30 3.30 3.50 3.70 6.30 6.50 6.70 0.23 0.30 0.35 0.65 0.76 0.85 2.90 3.00 3.15 0.90 – ...

Page 12

... TC2117 NOTES: DS21665C-page 12 © 2006 Microchip Technology Inc. ...

Page 13

... Section 5.0 “Packaging information”: Added package marking information and package outline drawings • Added disclaimer to package outline drawings. • Added Appendix A Revision History Revision B (May 2002) • Not Documented Revision A (May 2001) • Original Release of this Document. © 2006 Microchip Technology Inc. TC2117 DS21665C-page 13 ...

Page 14

... TC2117 NOTES: DS21665C-page 14 © 2006 Microchip Technology Inc. ...

Page 15

... PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO. X.XX XX Device Voltage Package Option Device TC2117 Fixed Output CMOS LDO Positive Regulator Voltage Option:* 1.8V = 1.8V 2.5V = 2.5V 3.0V = 3.0V 3.3V = 3.3V * Other output voltages are available. Please contact your local Microchip sales office for details. ...

Page 16

... TC2117 NOTES: DS21665C-page 16 © 2006 Microchip Technology Inc. ...

Page 17

Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...

Page 18

W ORLDWIDE AMERICAS ASIA/PACIFIC Corporate Office Asia Pacific Office 2355 West Chandler Blvd. Suites 3707-14, 37th Floor Chandler, AZ 85224-6199 Tower 6, The Gateway Tel: 480-792-7200 Habour City, Kowloon Fax: 480-792-7277 Hong Kong Technical Support: Tel: 852-2401-1200 http://support.microchip.com Fax: 852-2401-3431 ...

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