MCP1725T-1202E/MC Microchip Technology, MCP1725T-1202E/MC Datasheet

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MCP1725T-1202E/MC

Manufacturer Part Number
MCP1725T-1202E/MC
Description
500mA CMOS LDO, Vout=1.2V, Extended Temp Range 8 DFN 2X3mm T/R
Manufacturer
Microchip Technology
Datasheet

Specifications of MCP1725T-1202E/MC

Regulator Topology
Positive Fixed
Voltage - Output
1.2V
Voltage - Input
2.3 ~ 6 V
Voltage - Dropout (typical)
0.21V @ 500mA
Number Of Regulators
1
Current - Output
500mA (Min)
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-DFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP1725T-1202E/MC
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Features
• 500 mA Output Current Capability
• Input Operating Voltage Range: 2.3V 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: 210 mV typical at 500 mA
• Typical Output Voltage Tolerance: 0.5%
• 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)
• Adjustable Delay on Power Good Output
• Short Circuit Current Limiting and
• 2x3 DFN-8 and SOIC-8 Package Options
Applications
• High-Speed Driver Chipset Power
• Networking Backplane Cards
• Notebook Computers
• Network Interface Cards
• Palmtop Computers
• Video Graphics Adapters
• 2.5V to 1.XV Regulators
Package Types
© 2007 Microchip Technology Inc.
SHDN
- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
Upon Request
Overtemperature Protection
GND
V
V
Adjustable (SOIC-8)
IN
IN
500 mA, Low Voltage, Low Quiescent Current LDO Regulator
1
2
3
4
8
7
6
5
V
ADJ
C
PWRGD
OUT
DELAY
SHDN
GND
V
V
IN
IN
Fixed (SOIC-8)
1
2
3
4
8
7
6
5
V
Sense
C
PWRGD
OUT
DELAY
SHDN
GND
Adjustable (2x3 DFN)
V
V
IN
IN
Description
The MCP1725 is a 500 mA Low Dropout (LDO) linear
regulator that provides high current and low output
voltages in a very small package. The MCP1725
comes in a fixed (or adjustable) output voltage version,
with an output voltage range of 0.8V to 5.0V. The
500 mA output current capability, combined with the
low output voltage capability, make the MCP1725 a
good choice for new sub-1.8V output voltage LDO
applications that have high current demands.
The MCP1725 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 MCP1725 is typically less than
120 µA over the entire input voltage range, making it
attractive for portable computing applications that
demand high output current. When shut down, the
quiescent current is reduced to less than 0.1 µA.
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). An
external capacitor can be used on the C
adjust the delay from 200 µs to 300 ms.
The overtemperature and short circuit current-limiting
provide additional protection for the LDO during system
fault conditions.
1
2
3
4
Note:
DFN tab is at ground potential.
MCP1725
8
7
6
5
V
ADJ
C
PWRGD
OUT
DELAY
SHDN
GND
V
V
IN
IN
Fixed (2x3 DFN)
1
2
3
4
DS22026B-page 1
DELAY
8
7
6
5
V
Sense
C
PWRGD
OUT
DELAY
pin to

Related parts for MCP1725T-1202E/MC

MCP1725T-1202E/MC Summary of contents

Page 1

... GND 4 5 PWRGD 4 GND © 2007 Microchip Technology Inc. MCP1725 Description The MCP1725 is a 500 mA Low Dropout (LDO) linear regulator that provides high current and low output voltages in a very small package. The MCP1725 comes in a fixed (or adjustable) output voltage version, with an output voltage range of 0 ...

Page 2

... IN 3 SHDN C 6 DELAY 4 GND PWRGD 5 MCP1725 Adjustable Output Voltage OUT ADJ IN 3 SHDN C 6 DELAY 4 GND PWRGD 1.8V @ 500 mA OUT µ 100 kΩ 1000 pF PWRGD V = 1.2V @ 500 mA OUT kΩ µ 100 kΩ kΩ 1000 pF PWRGD © 2007 Microchip Technology Inc. ...

Page 3

... Functional Block Diagram - Adjustable Output V IN Undervoltage Lock Out (UVLO) SHDN Overtemperature Sensing V IN SHDN Soft-Start GND © 2007 Microchip Technology Inc. PMOS I SNS Driver w/limit EA and SHDN – SHDN V REF Reference Comp 92 REF MCP1725 V OUT ADJ PWRGD T DELAY C DELAY DS22026B-page 3 ...

Page 4

... MCP1725 Functional Block Diagram - Fixed Output V IN Undervoltage Lock Out (UVLO) SHDN Overtemperature Sensing V IN SHDN Soft-Start GND DS22026B-page 4 PMOS I SNS Driver w/limit EA and SHDN – SHDN V REF Reference Comp 92 REF V OUT Sense PWRGD T DELAY C DELAY © 2007 Microchip Technology Inc. ...

Page 5

... 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. † Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. ...

Page 6

... DELAY 0.1 µF DELAY µ ADJ SENSE PWRGD_TH PWRGD_TH % 2. 2. µ 6V, SHDN = SHDN = GND + V DROPOUT(MAX). is the desired set point output R is the highest voltage measured over the . ). Exceeding the maximum allowable power © 2007 Microchip Technology Inc. ...

Page 7

... Electrical Specifications: Unless otherwise indicated, all limits apply for V Parameters Temperature Ranges Operating Junction Temperature Range Maximum Junction Temperature Storage Temperature Range Thermal Package Resistances Thermal Resistance, 8LD 2x3 DFN Thermal Resistance, 8LD SOIC © 2007 Microchip Technology Inc OUT(MAX) DROPOUT(MAX) = +25°C. A (Note 7) of -40°C to +125°C ...

Page 8

... OUT - 105 130 Temperature (°C) Line Regulation vs 3.3V OUT V = 0.8V OUT = 1.8V OUT OUT 500 mA OUT - 105 130 Temperature (°C) Load Regulation vs OUT = 6. 5. 2.3V, 3.0V, 4. 105 130 Temperature (°C) Adjust Pin Voltage vs. © 2007 Microchip Technology Inc. = ...

Page 9

... -45 - Temperature (°C) FIGURE 2-9: Power Good (PWRGD) Time Delay vs. Temperature (Adjustable Version). © 2007 Microchip Technology Inc 0. 2.3V (whichever is greater), I OUT Open, Fixed Output Version, and T IN DELAY 150 I OUT 140 = 5.0V OUT 130 V = 2.5V 120 OUT 110 100 ...

Page 10

... Temperature (°C) Line Regulation vs 1 500 mA OUT = 0.8V = 1.2V - 105 130 Temperature (°C) Load Regulation vs. < 2.5V Fixed). OUT 500 mA OUT V = 2.5V OUT V = 5.0V OUT - 105 130 Temperature (°C) Load Regulation vs. ≥ 2.5V Fixed). OUT © 2007 Microchip Technology Inc. ...

Page 11

... I STEADY STATE 0.60 0.50 3.0 3.5 4.0 4.5 5.0 Input Voltage (V) FIGURE 2-21: Short Circuit Current vs. Input Voltage. © 2007 Microchip Technology Inc 0. 2.3V (whichever is greater), I OUT Open, Fixed Output Version, and T IN DELAY 5.0V OUT 2.5V ...

Page 12

... Shutdown. OUT 100 1000 FIGURE 2-29: Timing with Cdelay of 1000 pF (2.5V Fixed). = 2.5V OUT FIGURE 2-30 Timing with mA, OUT = +25°C. A 2.5V (Adj.) Startup from Power Good (PWRGD) Power Good (PWRGD) of 0.01 µF (2.5V Fixed). DELAY © 2007 Microchip Technology Inc. ...

Page 13

... 4.7 µF Ceramic (X7R), SHDN = V IN OUT FIGURE 2-31: Dynamic Line Response (5.0V Fixed). FIGURE 2-32: Dynamic Line Response (2.5V Fixed). © 2007 Microchip Technology Inc 0. 2.3V (whichever is greater), I OUT Open, Fixed Output Version, and T IN DELAY FIGURE 2-33: (2.5V Fixed 500 mA). ...

Page 14

... PWRGD output can be adjusted from 200 µs (no capacitance) to 300 ms (0.1 µF capacitor). This allows for the optimal setting of the system reset time. pin) from the time the LDO DELAY pin. DELAY ) pin to ground, the typical delay times © 2007 Microchip Technology Inc. ...

Page 15

... SENSE input is used to provide output voltage feedback to the internal circuitry of the MCP1725. The SENSE pin typically improves load regulation by allowing the device to compensate for voltage drops due to packaging and circuit board layout. © 2007 Microchip Technology Inc. MCP1725 3.7 Regulated Output Voltage (V The V ...

Page 16

... MCP1725 to improve dynamic performance and power supply ripple rejection performance. A maximum of 22 µF is recommended. capacitors are not recommended for low-temperature applications of < -25°C. V – V ⎛ ⎞ OUT ADJ -------------------------------- = R ⎝ ⎠ ADJ LDO Output Voltage ADJ Pin Voltage (typically 0.41V) Aluminum-electrolytic © 2007 Microchip Technology Inc. ...

Page 17

... Figure 4-3. © 2007 Microchip Technology Inc. The power good output is an open-drain output that can be pulled up to any voltage that is equal to or less than the LDO input voltage. This output is capable of sinking 1 ...

Page 18

... SHDN input. The total time from the SHDN input going high (turn-on) to the LDO output being in regulation is typically 100 µs. See the SHDN input. 30 µs SHDN V OUT FIGURE 4-5: Diagram. , with minimum IN Figure 4-5 for a timing diagram 400 ns (typ) 70 µs Shutdown Input Timing © 2007 Microchip Technology Inc. ...

Page 19

... LDO. For applications with input voltages near 2.3V, these PCB trace voltage drops can sometimes lower the input voltage enough to trigger a shutdown due to undervoltage lockout. © 2007 Microchip Technology Inc. MCP1725 4.9 Overtemperature Protection The MCP1725 LDO has temperature-sensing circuitry ...

Page 20

... GND for the MCP1725 is GND continuous operating junction C ° the device. The thermal resistance C/W. ° × Rθ TOTAL JA AMAX = Maximum continuous junction temperature = Total device power dissipation = Thermal resistance from junction to ambient = Maximum ambient temperature © 2007 Microchip Technology Inc. To ...

Page 21

... T = Rise in device junction temperature J(RISE) over the ambient temperature T = Ambient temperature A © 2007 Microchip Technology Inc. 5.3 Typical Application Internal power dissipation, junction temperature rise, junction temperature and maximum power dissipation can be is calculated in the following example. The power dissi- pation as a result of ground current is small enough to be neglected ...

Page 22

... C charging current, DELAY 140 nA typical. ΔT = time delay Δ threshold voltage, 0.42V DELAY typical Δ • Δ 140nA T • ------ - --------------------------------- - = 333.3 Δ V 0.42V For a delay of 300ms 333.3E-09 *.300 C = 100E-09 µF (0.1 µF) © 2007 Microchip Technology Inc. – 09 • Δ ×10 T ...

Page 23

... 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. © 2007 Microchip Technology Inc. Standard Extended Temp Voltage Code ...

Page 24

... MCP1725 D N NOTE TOP VIEW A3 DS22026B-page EXPOSED PAD BOTTOM VIEW A NOTE NOTE © 2007 Microchip Technology Inc. ...

Page 25

... N NOTE © 2007 Microchip Technology Inc φ MCP1725 α c β DS22026B-page 25 ...

Page 26

... MCP1725 NOTES: DS22026B-page 26 © 2007 Microchip Technology Inc. ...

Page 27

... APPENDIX A: REVISION HISTORY Revision B (December 2007) • Updated Temperature Specifications in Section 1.0 “Electrical Characteristics”. • Updated Section 6.0 “Packaging Information”. • Updated Templates. Revision A (December 2006) • Original Release of this Document. © 2007 Microchip Technology Inc. MCP1725 DS22026B-page 27 ...

Page 28

... MCP1725 NOTES: DS22026B-page 28 © 2007 Microchip Technology Inc. ...

Page 29

... SN = Plastic Small Outline (150 mil Body), 8-lead © 2007 Microchip Technology Inc. Examples MCP1725-0802E/MC: 0.8V Low Dropout Temp. Package b) MCP1725T-1202E/MC: Tape and Reel, c) MCP1725-1802E/MC: 1.8V Low Dropout d) MCP1725T-2502E/MC: Tape and Reel, e) MCP1725-3002E/MC: 3.0V Low Dropout f) MCP1725-3302E/MC: 3.3V Low Dropout g) MCP1725T-5002E/MC: Tape and Reel, ...

Page 30

... MCP1725 NOTES: DS22026B-page 30 © 2007 Microchip Technology Inc. ...

Page 31

... PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 32

... Fax: 886-3-572-6459 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 Tel: 33-1-69-53-63-20 ...

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