MCP1790-3002E/SN Microchip Technology, MCP1790-3002E/SN Datasheet

MCP1790-3002E/SN

Manufacturer Part Number

MCP1790-3002E/SN

Description

High Voltage, LDO, 50 mA, -40C to +125C, 8-SOIC 150mil, TUBE

Manufacturer

Microchip Technology

Datasheet

1.MCP1790-3002ESN.pdf (34 pages)

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Features

• 48V (43.5V ±10%) load dump protected for 180ms

• Wide steady state supply voltage, 6.0V - 30.0V

• Extended Junction Temperature Range:

• Fixed output voltages: 3.0V, 3.3V, 5.0V

• Low quiescent current: 70 µA typical

• Low shutdown quiescent current: 10 µA typical

• Output Voltage Tolerances of ±2.5% over the

• Maximum output current of 70 mA @ +125°C

• Maximum continuous input voltage of 30V

• Internal thermal overload protection, +157°C

• Internal short circuit current limit, 120 mA (typical)

• Short Circuit Current Foldback

• Shutdown Input option (MCP1791)

• Power Good Output option (MCP1791)

• High PSRR, -90 dB@100 Hz (typical)

• Stable with 1 µF to 1000 µF Tantalum and

• Stable with 4.7 µF to 1000 µF Ceramic Capacitors

Applications

• Low Voltage A/C powered (24VAC) Fire Alarms,

• Automotive Electronics

• Automotive Accessory Power Adapters

• Electronic Thermostat Controls

• Microcontroller power

with a 30 second repetition rate (FORD Test Pulse

G Loaded)

-40 to +125°C

temperature range

Junction Temperature

(typical) Junction Temperature

for +5V option.

Electrolytic Capacitors

Sensors, HVAC Controls

70 mA, High Voltage Regulator

MCP1790/MCP1791

General Description

The MCP1790/MCP1791 regulator provides up to 70 mA

of current. The input operating voltage range is specified

from 6.0V to 30V continuous, 48V absolute max, making

it ideal for automotive and commercial 12/24 VDC

systems.

The MCP1790/MCP1791 has a tight tolerance output

voltage load regulation of ±0.2% (typical) and a very

good line regulation at ±0.0002%/V (typical). The regu-

lator output is stable with ceramic, tantalum, and elec-

trolytic capacitors. The MCP1790/MCP1791 regulator

incorporates both thermal and short circuit protection.

The MCP1790 is the 3-pin version of the MCP1790/

MCP1791 family. The MCP1791 is the 5-pin version

and incorporates a Shutdown input signal and a Power

Good output signal.

The regulator is specifically designed to operate in the

automotive environment and will survive +48V (43.5V

±10%) load dump transients and double-battery jumps.

The device is designed to meet the stringent quiescent

current requirements of the automotive industry. The

device is also designed for the commercial low voltage

fire alarm/detector systems which use 24 VDC to sup-

ply the required alarms throughout buildings. The low

ground current, 110 µA (typ.), of the CMOS device will

provide a power cost savings to the end users over

similar bipolar devices. Typical buildings using hun-

dreds of 24V powered fire and smoke detectors can

see substantial savings on energy consumption and

wiring gage reduction compared to bipolar regulators.

The MCP1790 device will be offered in the 3-pin

DD-PAK, and SOT-223 packages.

The MCP1791 device will be offered in the 5-pin

DD-PAK, and SOT-223 packages.

The MCP1790/MCP1791 will have a junction tempera-

ture operating range of -40°C to +125°C.

DS22075A-page 1

Related parts for MCP1790-3002E/SN

MCP1790-3002E/SN Summary of contents

Page 1

... The MCP1790/MCP1791 regulator incorporates both thermal and short circuit protection. The MCP1790 is the 3-pin version of the MCP1790/ MCP1791 family. The MCP1791 is the 5-pin version and incorporates a Shutdown input signal and a Power Good output signal ...

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... MCP1790/MCP1791 Package Types MCP1790 DDPAK-3 SOT-223 Pin GND (TAB OUT 4 GND (TAB) DS22075A-page 2 DDPAK MCP1791 SOT-223 Pin 1 SHDN GND (TAB OUT 5 PWRGD 6 GND (TAB) © 2008 Microchip Technology Inc. ...

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... MCP1790/MCP1791 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Input Voltage, V .........................................................+48.0V IN VIN, PWRGD, SHDN .....................(GND-0.3V VOUT .................................................. (GND-0.3V) to (+5.5V) Internal Power Dissipation ............ Internally-Limited (Note 4) Output Short Circuit Current..................................Continuous Storage temperature .....................................-55°C to +150°C Maximum Junction Temperature .....................165°C (Note 7) Operating Junction Temperature...................-40°C to +125°C ESD protection on all pins ..........≥ ...

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... Short Circuit Recovery Time will depend upon the thermal dissipation properties of the package and circuit board. 9: TCV = ( OUT OUT-HIGH OUT-LOW peraturerange lowest voltage measured over the temperature range. OUT-LOW © 2008 Microchip Technology Inc. MCP1790/MCP1791 = OUT(MAX) DROPOUT(MAX), = +25°C, SHDN > 2.4V. A (Note 5) of -40°C to +125°C. J Symbol Min ...

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... MCP1790/MCP1791 AC/DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted 4.7 µF (X7R Ceramic 4.7 µF (X7R Ceramic), T OUT IN Boldface type applies for junction temperatures, T Parameters Detect Threshold to PWRGD Active TV Time Delay AC Performance Output Delay From SHDN PWRGD Delay from SHDN Output Noise Power Supply Ripple Rejection Ratio ...

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... Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Package Thermal Resistances Thermal Resistance, 3LD DDPAK Thermal Resistance, 3LD SOT-223 Thermal Resistance, 5LD DDPAK Thermal Resistance, 5LD SOT-223 © 2008 Microchip Technology Inc. MCP1790/MCP1791 Symbol Min Typ Max T -40 +125 J T ...

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... Input Voltage (V) FIGURE 2-3: Quiescent Current vs. Input Voltage. DS22075A-page 8 = 10.0 µF Ceramic (X7R and device is MCP1790. SHDN IN, 120. 5.0V OUT µA 100.00 OUT 80.00 60.00 40.00 20.00 0.00 80 105 130 -45 FIGURE 2-4: Junction Temperature. 140 V = 3.3V ...

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... Line Regulation vs. Temperature. 0. LOAD -0.05 V =5.0V REG -0.10 -0.15 V =3.3V REG -0.20 V =3.0V REG -0.25 -0.30 -45 - Temperature (°C) FIGURE 2-9: Load Regulation vs. Temperature. © 2008 Microchip Technology Inc. MCP1790/MCP1791 = 10.0 µF Ceramic (X7R and device is MCP1790. SHDN IN, 5.04 = 3.3V 5. 30V 5.02 5.01 5.00 4.99 4.98 4.97 4.96 -45°C -45°C 4.95 4.94 80 105 130 0 FIGURE 2-10: Current. 1.0 = 5.0V 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 ...

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... IN I =10 mA OUT -60 -70 -80 -90 -100 -110 0.01 0 Frequency (kHz) FIGURE 2-15: Power Supply Ripple Rejection vs. Frequency. DS22075A-page 10 = 10.0 µF Ceramic (X7R and device is MCP1790. SHDN IN, -20 < 0.1 Ω - -40 V -50 C -60 I OUT -70 -80 -90 -100 -110 -120 26 30 0.01 FIGURE 2-16: Rejection vs. Frequency. ...

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... Unless otherwise indicated 4.7 uF Ceramic (X7R), C OUT V = 6.0V kΩ PWRGD_PULLUP OUT FIGURE 2-19: Dynamic Line Response. FIGURE 2-20: Dynamic Line Response. FIGURE 2-21: Dynamic Load Response. © 2008 Microchip Technology Inc. MCP1790/MCP1791 = 10.0 µF Ceramic (X7R and device is MCP1790. SHDN IN, FIGURE 2-22: 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 FIGURE 2-23 ...

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... PWRGD_PULLUP OUT 3.3V OUT Input Voltage (V) FIGURE 2-25: Startup Ground Current. DS22075A-page 12 = 10.0 µF Ceramic (X7R and device is MCP1790. SHDN IN OUT V = 5.0V OUT mA, Temperature = +25°C, OUT © 2008 Microchip Technology Inc. ...

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... OUT ulator. A minimum output capacitance of 1.0 µF tanta- lum, 1.0 µF electrolytic, or 4.7 µF ceramic is required for stability. The MCP1790 is stable with ceramic, tantalum, and electrolytic capacitors. See Section 4.7 “Output Capacitor” for output capacitor selection guidance. ...

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... The MCP1790/MCP1791 are high input voltage regula- tors capable of providing current at output voltages up to 5.0V. The devices have an input voltage operating range from 6.0V to 30V, 48V absolute max. The MCP1790 devices are 3-pin devices consist- ing and GND. The MCP1791 devices ...

Page 15

... The minimum value for ceramic capacitors is 4.7 µF. The regulator is stable for all three types of capacitors from 4.7 µF to 1000 µF (see The MCP1790/MCP1791 regulator may be used with a 1 µF ceramic output capacitor if a 0.300Ω resistor is placed in series with the capacitor. The low ESR and corresponding pole of the ceramic capacitor causes the instability below 4.7 µ ...

Page 16

... Output Current and Current Limiting The MCP1790/MCP1791 devices are tested and ensured to supply a minimum output current. The MCP1790/MCP1791 also incorporate an output current limit foldback. When the regulator overcurrent condition, V will decrease with increas- OUT ing load. When V falls below 30% (typical OUT the output current will start to fold back ...

Page 17

... Therefore, when pulling PWRGD to VIN instead the designer must be OUT aware of the PWRGD signal going high while the input voltage is rising at startup. Pulling PWRGD to V removes the startup pulse. © 2008 Microchip Technology Inc. MCP1790/MCP1791 V PWRGD_TH V OUT ) level PWRGD_TH PWRGD ...

Page 18

... MCP1790/MCP1791 5.0 APPLICATION CIRCUITS / ISSUES 5.1 Typical Application The MCP1790/MCP1791 is most commonly used as a voltage regulator. It’s high voltage input capability and thermal protection make it ideal for automotive and 24V industrial applications. MCP1791 PWRGD V 5 1N4002 IN 10 kΩ VDC OUT 1 µ ...

Page 19

... I OUT(MAX) specification of the MCP1790/MCP1791. The internal current foldback feature of the MCP1790/MCP1791 will prevent high peak load demands from causing non-recoverable damage. The Current Foldback feature of the device will limit the output voltage and output current during pulsed applications ...

Page 20

... PACKAGING INFORMATION 6.1 Package Marking Information 3-Lead DDPAK (MCP1790) XXXXXXXXX XXXXXXXXX YYWWNNN 3-Lead SOT-223 (MCP1790) XXXXXXX XXXYYWW NNN 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 21

... 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. © 2008 Microchip Technology Inc. MCP1790/MCP1791 Example: MCP1791 e 3 50EET^^ ...

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... Microchip Technology Inc. MCP1790/MCP1791 DS22075A-page 27 ...

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... PART NO Device Output Feature Tolerance Voltage Code Device: MCP1790 High Voltage Regulator MCP1790T High Voltage Regulator Tape and Reel MCP1791 High Voltage Regulator MCP1791T High Voltage Regulator Tape and Reel Output Voltage *: 30 = 3.0V “Standard” 3.3V “Standard” 5.0V “ ...

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... PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, 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. © 2008, Microchip Technology Incorporated, Printed in the U ...

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 © 2008 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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