MCP1824S Microchip Technology Inc., MCP1824S Datasheet

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MCP1824S

Manufacturer Part Number
MCP1824S
Description
300 Ma, Low Voltage, Low Quiescent Current Ldo Regulator
Manufacturer
Microchip Technology Inc.
Datasheet

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0
Features
• 300 mA Output Current Capability
• Input Operating Voltage Range: 2.1V to 6.0V
• Adjustable Output Voltage Range: 0.8V to 5.0V
• Standard Fixed Output Voltages:
• Other Fixed Output Voltage Options Available
• Low Dropout Voltage: 200 mV Typical at 300 mA
• Typical Output Voltage Tolerance: 0.4%
• Stable with 1.0 µF Ceramic Output Capacitor
• Fast Response to Load Transients
• Low Supply Current: 120 µA (typical)
• Low Shutdown Supply Current: 0.1 µA (typical)
• Fixed Delay on Power Good Output
• Short Circuit Current Limiting and
• 5-Lead Plastic SOT-223, SOT-23 Package
• 3-Lead Plastic SOT-223 Package Option
Applications
• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers
• Network Interface Cards
• Palmtop Computers
• 2.5V to 1.XV Regulators
300 mA, Low Voltage, Low Quiescent Current LDO Regulator
(MCP1824 only)
- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
Upon Request
(MCP1824 only)
(MCP1824 only)
Overtemperature Protection
Options (MCP1824)
(MCP1824S)
2007 Microchip Technology Inc.
MCP1824/MCP1824S
Description
The MCP1824/MCP1824S is a 300 mA Low Dropout
(LDO) linear regulator that provides high current and
low output voltages. The MCP1824 comes in a fixed or
adjustable output voltage version, with an output
voltage range of 0.8V to 5.0V. The 300 mA output
current capability, combined with the low output voltage
capability, make the MCP1824 a good choice for new
sub-1.8V output voltage LDO applications that have
high current demands. The MCP1824S is a 3-pin fixed
voltage version.
The MCP1824/MCP1824S is stable using ceramic
output capacitors that inherently provide lower output
noise and reduce the size and cost of the entire
regulator solution. Only 1 µF of output capacitance is
needed to stabilize the LDO.
Using CMOS construction, the quiescent current
consumed by the MCP1824/MCP1824S is typically
less than 120 µA over the entire input voltage range,
making it attractive for portable computing applications
that demand high output current. The MCP1824
versions have a Shutdown (SHDN) pin. When shut
down, the quiescent current is reduced to less than
0.1 µA.
On the MCP1824 fixed output versions, the scaled-
down output voltage is internally monitored and a
power good (PWRGD) output is provided when the
output is within 92% of regulation (typical). The
PWRGD delay is internally fixed at 110 µs (typical).
The overtemperature and short circuit current-limiting
provide additional protection for the LDO during system
fault conditions.
DS22070A-page 1

Related parts for MCP1824S

MCP1824S Summary of contents

Page 1

... MCP1824 a good choice for new sub-1.8V output voltage LDO applications that have high current demands. The MCP1824S is a 3-pin fixed voltage version. The MCP1824/MCP1824S is stable using ceramic output capacitors that inherently provide lower output noise and reduce the size and cost of the entire regulator solution. Only 1 µ ...

Page 2

... OUT 5 PWRGD ADJ V 6 GND (TAB) GND (TAB) DS22070A-page SOT-23 Adjustable GND (TAB) SHDN ADJ V OUT OUT — — MCP1824S SOT-223 Pin SOT-223 GND (TAB OUT 4 GND (TAB) 2007 Microchip Technology Inc. ...

Page 3

... Typical Applications On SHDN Off V = 2. 4.7 µF On SHDN Off 2. 4.7 µF 2007 Microchip Technology Inc. MCP1824/MCP1824S MCP1824 Fixed Output Voltage R 100 kΩ OUT GND MCP1824 Adjustable Output Voltage V ADJ R 40 kΩ OUT GND PWRGD 1.8V @ 300 mA ...

Page 4

... MCP1824/MCP1824S Functional Block Diagram - Adjustable Output (MCP1824 Undervoltage Lock Out (UVLO) SHDN Overtemperature Sensing V IN SHDN Soft-Start GND DS22070A-page 4 PMOS I SNS Driver w/limit EA and SHDN – SHDN V REF Reference Comp 92 REF V OUT ADJ/SENSE T DELAY 2007 Microchip Technology Inc. ...

Page 5

... Functional Block Diagram - Fixed Output (MCP1824S Undervoltage Lock Out (UVLO) SHDN Overtemperature Sensing V IN SHDN Soft-Start GND 2007 Microchip Technology Inc. MCP1824/MCP1824S PMOS I SNS Driver w/limit EA and SHDN – SHDN V REF Reference Comp 92 REF V OUT Sense T DELAY ...

Page 6

... MCP1824/MCP1824S Functional Block Diagram - Fixed Output (MCP1824 Undervoltage Lock Out (UVLO) SHDN Overtemperature Sensing V IN SHDN Soft-Start GND DS22070A-page 6 PMOS I SNS Driver w/limit EA and SHDN – SHDN V REF Reference Comp 92 REF V OUT Sense PWRGD T DELAY 2007 Microchip Technology Inc. ...

Page 7

... The test time is small enough such that the rise in the junction temperature over the ambient temperature is not significant. 2007 Microchip Technology Inc. MCP1824/MCP1824S † Notice: Stresses above those listed under “Maximum Rat- ings” may cause permanent damage to the device. This is a ...

Page 8

... MCP1824/MCP1824S AC/DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted mA 4.7 µF (X7R Ceramic), T OUT IN OUT Boldface type applies for junction temperatures, T Parameters Sym Maximum Pulsed Output Duty I PULSE_DUTY Cycle Maximum Pulsed Output Period I PULSE_PERIOD Adjust Pin Characteristics (Adjustable Output Only) ...

Page 9

... The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the desired junction temperature. The test time is small enough such that the rise in the junction temperature over the ambient temperature is not significant. 2007 Microchip Technology Inc. MCP1824/MCP1824S = ...

Page 10

... MCP1824/MCP1824S TEMPERATURE SPECIFICATIONS Parameters Temperature Ranges Operating Junction Temperature Range Maximum Junction Temperature Storage Temperature Range Thermal Package Resistances Thermal Resistance, 3LD SOT-223 Thermal Resistance, 5LD SOT-23 Thermal Resistance, 5LD SOT-223 DS22070A-page 10 Sym Min Typ Max Units T -40 — +125 °C ...

Page 11

... V =6.0V IN 130 V =5.0V IN 120 110 100 V =3.0V V =2. -45 - Temperature (°C) FIGURE 2-3: Quiescent Current vs. Junction Temperature (Adjustable Version). 2007 Microchip Technology Inc. MCP1824/MCP1824S = 4.7 µF Ceramic (X7R 4.7 µF Ceramic (X7R 0.10 0.08 0.06 0.04 I OUT 0.02 0.00 -0.02 -0.04 -0.06 -0.08 -0. -45 FIGURE 2-4: Temperature (Adjustable Version). 0.10 = 1.2V Adj V 0.05 0.00 -0.05 -0.10 -0.15 -0 ...

Page 12

... MCP1824/MCP1824S Note: Unless otherwise indicated, C OUT Temperature = +25° 0.5V, Fixed output, SHDN = 10 kΩ pullup OUT 0.30 0.25 0.20 V OUT 0.15 0.10 0.05 0. 100 150 200 Load Current (mA) FIGURE 2-7: Dropout Voltage vs. Load Current (Adjustable Version). 0.24 0.23 0. 5.0V Adj 0.21 OUT 0.20 0.19 V 0.18 0. 2.5V Adj OUT 0.16 0.15 0.14 -45 - Temperature (°C) FIGURE 2-8: Dropout Voltage vs ...

Page 13

... I = 200 mA OUT 0. 300 mA OUT 0.01 0.00 -45 - Temperature (°C) FIGURE 2-15: Line Regulation vs. Temperature. 2007 Microchip Technology Inc. MCP1824/MCP1824S = 4.7 µF Ceramic (X7R 4.7 µF Ceramic (X7R 0.042 0.038 I OUT 0.034 0.030 I OUT 0.026 0.022 0.018 0.014 I OUT 0.010 105 130 -45 FIGURE 2-16: Temperature. ...

Page 14

... MCP1824/MCP1824S Note: Unless otherwise indicated, C OUT Temperature = +25° 0.5V, Fixed output, SHDN = 10 kΩ pullup OUT 0.20 0.18 0.16 0. 5.0V OUT 0.12 V OUT 0.10 0.08 0.06 0.04 0.02 0. 100 150 200 Load Current (mA) FIGURE 2-19: Dropout Voltage vs. Load Current. 0.24 I 0.22 0. 5.0V OUT 0.18 0. 2.5V OUT 0.14 0.12 -45 - Temperature (°C) FIGURE 2-20: Dropout Voltage vs. ...

Page 15

... Fixed output, SHDN = 10 kΩ pullup OUT FIGURE 2-25: Startup from V (Adjustable Version). FIGURE 2-26: Startup from Shutdown (Adjustable Version). FIGURE 2-27: Power Good (PWRGD) Timing. 2007 Microchip Technology Inc. MCP1824/MCP1824S = 4.7 µF Ceramic (X7R 4.7 µF Ceramic (X7R FIGURE 2-28: IN Timing. FIGURE 2-29: FIGURE 2-30 mA, OUT . IN Power Good (PWRGD) Dynamic Line Response ...

Page 16

... MCP1824/MCP1824S Note: Unless otherwise indicated, C OUT Temperature = +25° 0.5V, Fixed output, SHDN = 10 kΩ pullup OUT FIGURE 2-31: Dynamic Load Response. FIGURE 2-32: Dynamic Load Response. DS22070A-page 16 = 4.7 µF Ceramic (X7R 4.7 µF Ceramic (X7R 900 800 700 600 500 400 300 200 ...

Page 17

... Exposed Pad of the Package (ground potential) 3.4 Regulated Output Voltage (V The V pin is the regulated output voltage of the OUT LDO. A minimum output capacitance of 1.0 µF is required for LDO stability. The MCP1824/MCP1824S is stable with electrolytic capacitors. See Section 4.3 “Output Capacitor” for output capacitor selection guidance. 3.5 Power Good Output (PWRGD) ...

Page 18

... LDO Output Voltage The MCP1824 LDO is available with either a fixed output voltage or an adjustable output voltage. The output voltage range is 0.8V to 5.0V for either version. The MCP1824S LDO is available as a fixed voltage device. 4.1.1 ADJUST INPUT The adjustable version of the MCP1824 uses the ADJ pin to get the output voltage feedback for output voltage regulation ...

Page 19

... Output Capacitor The MCP1824/MCP1824S requires a minimum output capacitance of 1 µF for output voltage stability. Ceramic capacitors are recommended because of their size, cost, and environmental robustness qualities. Aluminum-electrolytic and tantalum capacitors can be used on the LDO output as well. The Equivalent Series Resistance (ESR) of the electrolytic output capacitor must be no greater than 1 ohm ...

Page 20

... V + 0.5V differential applied. The MCP1824/ R MCP1824S LDO has a very low dropout voltage specification of 210 mV (typical) at 300 mA of output current. See Section 1.0 “Electrical Characteristics” for maximum dropout voltage specifications. The MCP1824/MCP1824S LDO operates across an input voltage range of 2 ...

Page 21

... I VIN PWRGD The total power dissipated within the MCP1824/ MCP1824S is the sum of the power dissipated in the LDO pass device and the P(I CMOS construction, the typical I MCP1824S is 120 µA. Operating at a maximum V 3.465V results in a power dissipation of 0.12 milli-Watts for a 2.5V output. For most applications, this is small compared to the LDO pass device power dissipation and can be neglected ...

Page 22

... MCP1824/MCP1824S The maximum power dissipation capability for a package can be calculated given the junction-to- ambient thermal resistance and the maximum ambient temperature for the application. Equation 5-4 used to determine the package maximum internal power dissipation. EQUATION 5- – MAX A MAX --------------------------------------------------- MAX Rθ ...

Page 23

... SOT-23-5 (256°C/Watt Rθ (125°C – 60°C)/ 256°C/W D(MAX 0.254W D(MAX) From this table, you can see the difference in maximum allowable power dissipation between the SOT-223-5 package and the SOT-23-5 package. 2007 Microchip Technology Inc. MCP1824/MCP1824S DS22070A-page 23 ...

Page 24

... MCP1824/MCP1824S 6.0 PACKAGING INFORMATION 6.1 Package Marking Information 3-Lead SOT-223 (MCP1824S) XXXXXXX MCP1824ST-0802E/DB XXXYYWW MCP1824ST-1202E/DB NNN MCP1824ST-1802E/DB MCP1824ST-2502E/DB MCP1824ST-3002E/DB MCP1824ST-3302E/DB MCP1824ST-5002E/DB Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) ...

Page 25

... Package Marking Information (Continued) 5-Lead SOT-223 (MCP1824) XXXXXXX XXXYYWW NNN 5-Lead SOT-23 MCP1824T-0802E/OT XXNN MCP1824T-1202E/OT MCP1824T-1802E/OT 1 MCP1824T-2502E/OT MCP1824T-3002E/OT MCP1824T-3302E/OT MCP1824T-5002E/OT 2007 Microchip Technology Inc. MCP1824/MCP1824S Marking Part Number Code MCP1824T-0802E/DC 1824082 MCP1824T-1202E/DC 1824122 MCP1824T-1802E/DC 1824182 MCP1824T-2502E/DC 1824252 MCP1824T-3002E/DC 1824302 MCP1824T-3302E/DC 1824332 ...

Page 26

... MCP1824/MCP1824S DS22070A-page φ 2007 Microchip Technology Inc. ...

Page 27

... 2007 Microchip Technology Inc. MCP1824/MCP1824S φ DS22070A-page 27 ...

Page 28

... MCP1824/MCP1824S DS22070A-page φ 2007 Microchip Technology Inc. ...

Page 29

... APPENDIX A: REVISION HISTORY Revision A (November 2007) • Original Release of this Document. 2007 Microchip Technology Inc. MCP1824/MCP1824S DS22070A-page 29 ...

Page 30

... MCP1824/MCP1824S NOTES: DS22070A-page 30 2007 Microchip Technology Inc. ...

Page 31

... Device Output Feature Tolerance Voltage Code Device: MCP1824: 300 mA Low Dropout Regulator MCP1824T: 300 mA Low Dropout Regulator Tape and Reel MCP1824S: 300 mA Low Dropout Regulator MCP1824ST: 300 mA Low Dropout Regulator Tape and Reel Output Voltage *: 08 = 0.8V “Standard” 1.2V “Standard” 1.8V “Standard” ...

Page 32

... MCP1824/MCP1824S NOTES: DS22070A-page 32 2007 Microchip Technology Inc. ...

Page 33

... Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. 2007 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...

Page 34

... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris ...

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