9155000000000.0 - AVX - Datasheet.Live

LM2936Q

LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator

Literature Number: SNVS684A

LM2936Q

May 25, 2011

Ultra-Low Quiescent Current LDO Voltage Regulator

General Description

The LM2936Q ultra-low quiescent current regulator features

low dropout voltage and low current in the standby mode. With

less than 15 μA quiescent current at a 100 μA load, the

LM2936Q is ideally suited for automotive and other battery

operated systems. The LM2936Q retains all of the features

that are common to low dropout regulators including a low

dropout PNP pass device, short circuit protection, reverse

battery protection, and thermal shutdown. The LM2936Q has

a 40V maximum operating voltage limit, a −40°C to +125°C

operating temperature range, and ±3% output voltage toler-

ance over the entire output current, input voltage, and tem-

perature range. The LM2936Q is available in a SO-8

package.

Features

■AEC-Q100 Grade 1 Qualified (-40°C to 125°C)

■Ultra low quiescent current (IQ ≤ 15 μA for IO = 100 μA)

■Fixed 3.0V, 3.3V or 5.0V with 50 mA output

■±2% Initial output tolerance

■±3% Output tolerance over line, load, and temperature

■Dropout voltage typically 200 mV @ IO = 50 mA

■Reverse battery protection

■−50V reverse transient protection

■Internal short circuit current limit

■Internal thermal shutdown protection

■40V operating voltage limit

Typical Application

30131901

* Required if regulator is located more than 2″ from power supply filter capacitor.

** Required for stability. See Electrical Characteristics for required values. Must be rated over intended operating temperature range. Effective series resis-

tance (ESR) is critical, see curve. Locate capacitor as close as possible to the regulator output and ground pins. Capacitance may be increased without

bound.

LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator

Connection Diagrams

8-Pin SO (M)

30131906

Top View

LM2936QM and LM2936QMX

See NS Package Number M08A

8-Pin Mini-SOIC (MM)

30131928

Top View

LM2936QMM and LM2936QMMX

See NS Package Number MUA08A

Ordering Information

Output

Voltage

High

Voltage

Shutdown

Pin Order Package Type Package

Drawing

Transport

Media Feature

3.00V - - LM2936QMM-3.0 8-Lead Mini-SOIC MUA08A Rail

AEC-Q100 Grade 1

Qualified.

Automotive Grade

Production Flow. *

3.30V

- - LM2936QMM-3.3 8-Lead Mini-SOIC MUA08A Rail

- - LM2936QMMX-3.3 8-Lead Mini-SOIC MUA08A Tape/Reel

- - LM2936QM-3.3 8-Lead SOIC M08A Rail

- - LM2936QMX-3.3 8-Lead SOIC M08A Tape/Reel

5.00V

- LM2936QMM-5.0 8-Lead Mini-SOIC MUA08A Rail

- - LM2936QMMX-5.0 8-Lead Mini-SOIC MUA08A Tape/Reel

- LM2936QM-5.0 8-Lead SOIC M08A Rail

- - LM2936QMX-5.0 8-Lead SOIC M08A Tape/Reel

* Automotive grade (Q) product incorporates enhanced

manufacturing and support processes for teh automotive

market, including defect detection methodologies. Reli-

ability qualification is compliant with the requirements

and temperature grades defined in the AEC-Q100 stan-

dard. Automotive grade products are identified with the

letter Q. For more information go to http://

www.national.com/automotive.

www.national.com 2

LM2936Q

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Input Voltage (Survival) +60V, −50V

ESD Susceptibility (Note 2) 2000V

Power Dissipation (Note 3) Internally limited

Junction Temperature (TJmax)150°C

Storage Temperature Range −65°C to +150°C

Lead Temperature

(Soldering, 10 sec.) 260°C

Operating Ratings

Operating Temperature Range −40°C to +125°C

Maximum Operating Input Voltage -

LM2936Q +40V

SO-8 (M08A) θJA 140°C/W

SO-8 (M08A) θJC 45°C/W

MSO-8 (MUA08A) θJA 200°C/W

Electrical Characteristics for LM2936Q–3.0

VIN = 14V, IO = 10 mA, TJ = 25°C, unless otherwise specified. Boldface limits apply over entire operating temperature range

Parameter Conditions Min

(Note 5)

Typical

(Note 4)

Max

(Note 5)Units

All LM2936Q–3.0

Output Voltage

2.940 3.000 3.060

4.0V ≤ VIN ≤ 26V,

100 µA ≤ IO ≤ 50 mA (Note 6)

2.910 3.000 3.090

Quiescent Current IO = 100 μA, 8V ≤ VIN ≤ 24V 15 20 μA

IO = 10 mA, 8V ≤ VIN ≤ 24V 0.20 0.50 mA

IO = 50 mA, 8V ≤ VIN ≤ 24V 1.5 2.5 mA

Line Regulation 9V ≤ VIN ≤ 16V 5 10 mV

6V ≤ VIN ≤ 40V, IO = 1 mA 10 30

Load Regulation 100 μA ≤ IO ≤ 5 mA 10 30 mV

5 mA ≤ IO ≤ 50 mA 10 30

Dropout Voltage IO = 100 μA 0.05 0.10 V

IO = 50 mA 0.20 0.40 V

Short Circuit Current VO = 0V 65 120 250 mA

Output Impedance IO = 30 mAdc and 10 mArms, 450 mΩ

f = 1000 Hz

Output Noise Voltage 10 Hz–100 kHz 500 μV

Long Term Stability 20 mV/1000 Hr

Ripple Rejection Vripple = 1Vrms, fripple = 120 Hz −40 −60 dB

Reverse Polarity RL = 500Ω, T = 1 ms −50 −80 V

Transient Input Voltage

Output Voltage with VIN = −15V, RL = 500Ω 0.00 −0.30 V

Reverse Polarity Input

Maximum Line Transient RL = 500Ω, VO ≤ 3.30V, T = 40ms 60 V

Output Bypass

Capacitance (COUT) ESR

COUT = 22µF

0.1mA ≤ IOUT ≤ 50mA 0.3 8 Ω

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LM2936Q

Electrical Characteristics for LM2936Q–3.3

VIN = 14V, IO = 10 mA, TJ = 25°C, unless otherwise specified. Boldface limits apply over entire operating temperature range

Parameter Conditions Min

(Note 5)

Typical

(Note 4)

Max

(Note 5)Units

All LM2936Q–3.3

Output Voltage

3.234 3.300 3.366

4.0V ≤ VIN ≤ 26V,

100 µA ≤ IO ≤ 50 mA (Note 6)

3.201 3.300 3.399

Quiescent Current IO = 100 μA, 8V ≤ VIN ≤ 24V 15 20 μA

IO = 10 mA, 8V ≤ VIN ≤ 24V 0.20 0.50 mA

IO = 50 mA, 8V ≤ VIN ≤ 24V 1.5 2.5 mA

Line Regulation 9V ≤ VIN ≤ 16V 5 10 mV

6V ≤ VIN ≤ 40V, IO = 1 mA 10 30

Load Regulation 100 μA ≤ IO ≤ 5 mA 10 30 mV

5 mA ≤ IO ≤ 50 mA 10 30

Dropout Voltage IO = 100 μA 0.05 0.10 V

IO = 50 mA 0.20 0.40 V

Short Circuit Current VO = 0V 65 120 250 mA

Output Impedance IO = 30 mAdc and 10 mArms, 450 mΩ

f = 1000 Hz

Output Noise Voltage 10 Hz–100 kHz 500 μV

Long Term Stability 20 mV/1000 Hr

Ripple Rejection Vripple = 1Vrms, fripple = 120 Hz −40 −60 dB

Reverse Polarity RL = 500Ω, T = 1 ms −50 −80 V

Transient Input Voltage

Output Voltage with VIN = −15V, RL = 500Ω 0.00 −0.30 V

Reverse Polarity Input

Maximum Line Transient RL = 500Ω, VO ≤ 3.63V, T = 40ms 60 V

Output Bypass

Capacitance (COUT) ESR

COUT = 22µF

0.1mA ≤ IOUT ≤ 50mA 0.3 8 Ω

Electrical Characteristics for LM2936Q–5.0

VIN = 14V, IO = 10 mA, TJ = 25°C, unless otherwise specified. Boldface limits apply over entire operating temperature range

Parameter Conditions Min

(Note 5)

Typical

(Note 4)

Max

(Note 5)Units

All LM2936Q–5.0

Output Voltage

4.90 5.00 5.10

5.5V ≤ VIN ≤ 26V,

100 µA ≤ IO ≤ 50 mA (Note 6)4.85 5.00 5.15

Quiescent Current IO = 100 μA, 8V ≤ VIN ≤ 24V 9 15 μA

IO = 10 mA, 8V ≤ VIN ≤ 24V 0.20 0.50 mA

IO = 50 mA, 8V ≤ VIN ≤ 24V 1.5 2.5 mA

Line Regulation 9V ≤ VIN ≤ 16V 5 10 mV

6V ≤ VIN ≤ 40V, IO = 1 mA 10 30

Load Regulation 100 μA ≤ IO ≤ 5 mA 10 30 mV

5 mA ≤ IO ≤ 50 mA 10 30

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LM2936Q

Parameter Conditions Min

(Note 5)

Typical

(Note 4)

Max

(Note 5)Units

Dropout Voltage IO = 100 μA 0.05 0.10 V

IO = 50 mA 0.20 0.40 V

Short Circuit Current VO = 0V 65 120 250 mA

Output Impedance IO = 30 mAdc and 10 mArms, 450 mΩ

f = 1000 Hz

Output Noise Voltage 10 Hz–100 kHz 500 μV

Long Term Stability 20 mV/1000 Hr

Ripple Rejection Vripple = 1Vrms, fripple = 120 Hz −40 −60 dB

Reverse Polarity RL = 500Ω, T = 1 ms −50 −80 V

Transient Input Voltage

Output Voltage with VIN = −15V, RL = 500Ω 0.00 −0.30 V

Reverse Polarity Input

Maximum Line Transient RL = 500Ω, VO ≤ 5.5V, T = 40ms 60 V

Output Bypass

Capacitance (COUT) ESR

COUT = 10µF

0.1mA ≤ IOUT ≤ 50mA 0.3 8 Ω

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating

the device beyond its specified operating ratings.

Note 2: Human body model, 100 pF discharge through a 1.5 kΩ resistor.

Note 3: The maximum power dissipation is a function of TJmax, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is

PD = (TJmax − TA)/θJA. If this dissipation is exceeded, the die temperature will rise above 150°C and the LM2936Q will go into thermal shutdown.

Note 4: Typicals are at 25°C (unless otherwise specified) and represent the most likely parametric norm.

Note 5: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Note 6: To ensure constant junction temperature, pulse testing is used.

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LM2936Q

Typical Performance Characteristics

Dropout Voltage

30131908

Dropout Voltage

30131909

Quiescent Current

30131910

Quiescent Current

30131911

Quiescent Current

30131912

Quiescent Current

30131913

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LM2936Q

Quiescent Current

30131914

LM2936Q–3.0 COUT ESR

30131929

LM2936Q–5.0 COUT ESR

30131915

LM2936Q–3.3 COUT ESR

30131930

Peak Output Current

30131916

Peak Output Current

30131917

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LM2936Q

LM2936Q–5.0 Current Limit

30131918

LM2936Q–5.0 Line Transient Response

30131919

LM2936Q–5.0 Output at

Voltage Extremes

30131920

LM2936Q–5.0 Ripple Rejection

30131921

LM2936Q–5.0 Load Transient Response

30131922

LM2936Q–5.0 Low Voltage Behavior

30131923

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LM2936Q

LM2936Q–5.0 Output Impedance

30131924

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LM2936Q

Applications Information

Unlike other PNP low dropout regulators, the LM2936Q re-

mains fully operational to 40V. Owing to power dissipation

characteristics of the available packages, full output current

cannot be guaranteed for all combinations of ambient tem-

perature and input voltage. As an example, consider an

LM2936QZ–5.0 operating at 25°C ambient. Using the formula

for maximum allowable power dissipation given in (Note 3) ,

we find that PDmax = 641 mW at 25°C. Including the small

contribution of the quiescent current to total power dissipation

the maximum input voltage (while still delivering 50 mA output

current) is 17.3V. The LM2936QZ–5.0 will go into thermal

shutdown if it attempts to deliver full output current with an

input voltage of more than 17.3V. Similarly, at 40V input and

25°C ambient the LM2936QZ–5.0 can deliver 18 mA maxi-

mum.

Under conditions of higher ambient temperatures, the voltage

and current calculated in the previous examples will drop. For

instance, at the maximum ambient of 125°C the LM2936QZ–

5.0 can only dissipate 128 mW, limiting the input voltage to

7.34V for a 50 mA load, or 3.5 mA output current for a 40V

input.

The junction to ambient thermal resistance θJA rating has two

distinct components: the junction to case thermal resistance

rating θJC; and the case to ambient thermal resistance rating

θCA. The relationship is defined as: θJA = θJC + θCA.

For the SO-8 the θJA rating can be improved by using the

copper mounting pads on the printed circuit board as a ther-

mal conductive path to extract heat from the package.

On the SO-8 package the four ground pins are thermally con-

nected to the backside of the die. Adding approximately 0.04

square inches of 2 oz. copper pad area to these four pins will

improve the θJA rating to approximately 110°C/W. If this extra

pad are is placed directly beneath the package there should

not be any impact on board density.

While the LM2936Q has an internally set thermal shutdown

point of typically 160°C, this is intended as a safety feature

only. Continuous operation near the thermal shutdown tem-

perature should be avoided as it may have a negative affect

on the life of the device.

While the LM2936Q maintains regulation to 60V, it will not

withstand a short circuit above 40V because of safe operating

area limitations in the internal PNP pass device. Above 60V

the LM2936Q will break down with catastrophic effects on the

regulator and possibly the load as well. Do not use this device

in a design where the input operating voltage may exceed

40V, or where transients are likely to exceed 60V.

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LM2936Q

Equivalent Schematic Diagram

30131905

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LM2936Q

Physical Dimensions inches (millimeters) unless otherwise noted

8-Lead Small Outline Molded Package (M)

NS Package Number M08A

8-Lead Mini SOIC Package (MM)

NS Package Number MUA08A

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LM2936Q

Notes

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LM2936Q

Notes

LM2936Q Ultra-Low Quiescent Current LDO Voltage Regulator

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