MCP1791-3302E/ET Microchip Technology, MCP1791-3302E/ET Datasheet

MCP1791-3302E/ET

Manufacturer Part Number

MCP1791-3302E/ET

Description

IC LDO REG 70MA 3.3V 5DDPAK

Manufacturer

Microchip Technology

Datasheet

1.MCP1791T-3302EDC.pdf (34 pages)

Specifications of MCP1791-3302E/ET

Package / Case

TO-263-5, DÂ²Pak (5 leads + Tab), TO-263BA

Regulator Topology

Positive Fixed

Voltage - Output

3.3V

Voltage - Input

6 ~ 30 V

Voltage - Dropout (typical)

0.7V @ 70mA

Number Of Regulators

Current - Output

70mA (Min)

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Number Of Outputs

Polarity

Positive

Input Voltage Max

30 V

Output Voltage

3.3 V

Output Type

Fixed

Dropout Voltage (max)

1.3 V at 70 mA

Output Current

70 mA

Line Regulation

+/- 0.0002 % / V

Load Regulation

+/- 0.2 %

Voltage Regulation Accuracy

2.5 %

Maximum Operating Temperature

+ 125 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MCP1791-3302E/ET

Manufacturer:

MICROCHIP

Quantity:

12 000

Current page: 1 of 34
Download datasheet (991Kb)

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 MCP1791-3302E/ET

MCP1791-3302E/ET Summary of contents

Page 1

... 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. ...

Page 2

... 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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... TYPICAL APPLICATION On SHDN Off 30V 4.7 µ 8.0V to 16V IN 5Ω © 2008 Microchip Technology Inc. MCP1790/MCP1791 MCP1791 R 100 kΩ OUT GND MCP1790 OUT C 1 1.0 µF GND PWRGD 5. OUT µF Tantalum OUT C 2 1.0 µF Tantalum DS22075A-page 3 ...

Page 4

... 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 ..........≥ ...

Page 5

... 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 ...

Page 6

... 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 ...

Page 7

... 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 ...

Page 8

... The test time is small enough such that the rise in Junction Temperature over the Ambient temperature is not significant 10V,15V,25V,30V -45 - Temperature (°C) FIGURE 2-1: Power Good Time Delay vs. Temperature (MCP1791). 140 120 +130°C 100 +90°C 80 +25°C 0°C 60 -45° Input Voltage (V) FIGURE 2-2: Quiescent Current vs ...

Page 9

... 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 ...

Page 10

... FIGURE 2-16: Rejection vs. Frequency. I =50mA OUT 100 1000 FIGURE 2-17: (MCP1791). 100 1000 FIGURE 2-18: (MCP1791 mA, Temperature = +25°C, OUT =5.0V R =7. 400 mV p-p INAC =0 μF IN = 100 1000 Frequency (kHz) Power Supply Ripple Startup from V ...

Page 11

... 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 ...

Page 12

... MCP1790/MCP1791 Note: Unless otherwise indicated 4.7 uF Ceramic (X7R), C OUT V = 6.0V kΩ 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. ...

Page 13

... PIN DESCRIPTIONS The descriptions of the pins are listed in TABLE 3-1: MCP1790 PIN FUNCTION TABLE Pin No. Pin No. Symbol SOT-223-3 DDPAK 2,Tab 2,Tab GND OUT TABLE 3-2: MCP1791 PIN FUNCTION TABLE Pin No. Pin No. Symbol SOT-223-5 DDPAK SHDN GND OUT 5 5 PWRGD Tab Tab — ...

Page 14

... MCP1790/MCP1791 4.0 DEVICE OVERVIEW 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

... Shutdown (SHDN) The MCP1791 has a Shutdown (SHDN) input signal that enables or disables the regulator output voltage. When the SHDN input signal is greater than 2.40V, the regulator output voltage is enabled. Note that the regulator output may still be disabled by the undervolt- age lockout incorporated within the V ...

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

... Power Good Output (PWRGD) The MCP1791 has an open-drain Power Good (PWRGD) output signal capable of sinking a minimum of 5 current while maintaining a PWRGD output voltage of 0.4V or less. As the output voltage of the LDO rises, the PWRGD output will be held low until the output voltage has ...

Page 18

... OUT 5.2 Power Calculations 5.2.1 POWER DISSIPATION The internal power dissipation of the MCP1790/ MCP1791 is a function of input voltage, output voltage and output current. The power dissipation result of the quiescent current draw low insignifi- cant (70.0 µ The following equation can be IN used to calculate the internal power dissipation of the LDO ...

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

... MCP1790/MCP1791 6.0 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

... Package Marking Information (Continued) 5-Lead DDPAK (Fixed) (MCP1791) XXXXXXXXX XXXXXXXXX YYWWNNN 5-Lead SOT-223 (MCP1791) 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’) ...

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Page 27

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

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Page 31

... MCP1790-3302E/EB:3.3V LDO Regulator, c) MCP1790-5002E/EB:5.0V LDO Regulator, d) MCP1790-3002E/DB:3.0V LDO Regulator, e) MCP1790-3302E/DB:3.3V LDO Regulator, f) MCP1790-5002E/DB:5.0V LDO Regulator, a) MCP1791-3002E/ET: 3.0V LDO Regulator b) MCP1791-3302E/ET 3.3V LDO Regulator c) MCP1791-5002E/ET: 5.0V LDO Regulator d) MCP1791-3002E/DC 3.0V LDO Regulator e) MCP1791-3302E/DC 3.3V LDO Regulator f) MCP1791-5002E/DC 5.0V LDO Regulator . 3LD DDPAK 3LD DDPAK ...

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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. ...

Page 34

... 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 © 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 Tel: 33-1-69-53-63-20 ...

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