Diodes ZLDO1117 User Manual

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ZLDO1117

1A LOW DROPOUT POSITIVE REGULATOR

1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5.0V AND ADJUSTABLE OUTPUTS

Description

ZLDO1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability.

The ZLDO1117 has a 2% tolerance across the industrial temperature range and is guaranteed to have lower than 1.2V dropout at full load current making it ideal to provide well-regulated outputs of 1.2V to

5.0V with input supply voltages up to 18V. The ZLDO1117 is ideally suited to provide well-regulated supplies for

low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply across the whole industrial temperature range.

Features

• 1.2V Maximum Dropout at Full Load Current

• 2% Tolerance Over Temperature, Line and Load Variations

• Fast Transient Response

• Output Current Limiting

• Built-in Thermal Shutdown

• Good Noise Rejection

• Suitable for use with MLCC Capacitors

• Qualified to AEC-Q100 Grade 2 (see ‘Ordering Information’)

• PPAP capable (Note 4)

• -40 to +125°C Junction Temperature Range

• Available in TO252 and SOT223 with “Green” Molding Compound

(No Br, Sb)

 Lead-Free Finish; RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

4. Automotive products are AEC-Q100 qualified and are PPAP capable. Automotive, AEC-Q100 and standard products are electrically and thermally the same, except where specified.

Pin Assignments

(Top View)

3 2 1

Tab is Vout

SOT223

TO252

Vin

Vout

Adj (GND)

Typical Applications Circuit

1A I/O – 1.8V Core Regulator

3.3V

ZLDO1117-18

1.8V

4.7µF MLCC

ZLDO1117

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Pin Descriptions

Name

Adj (GND) I 1

V

O 2

OUT

VIN I 3

I/O

Number

Function

A resistor divider from this pin to the V Fixed-Mode).

The output of the regulator. A minimum of 4.7µF capacitor (0.05Ω ≤ ESR ≤ 0.5Ω) must be connected from this pin to ground to insure stability. For improved ac load response a larger output capacitor is recommended.

The input pin of regulator. Typically a large storage capacitor (0.05Ω ≤ ESR ≤ 0.5Ω) is connected from this pin to ground to ensure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.3V higher than V device to regulate properly.

pin and ground sets the output voltage (Ground only for

OUT

in order for the

OUT

Absolute Maximum Ratings (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameter Rating Unit

VIN Input Supply Voltage (Relative to Ground) -0.03 to +18 V

TJ Junction Temperature +150 °C

Power Dissipation See SOA Curve

TST Storage Temperature -65 to +150 °C

Unless otherwise stated voltages specified are relative to the ANODE pin.

1.2

1

0.8

(A)

0.6

LOAD

I

0.4

SOA

ESD Susceptibility

Symbol Parameter Rating Unit

HBM Human Body Model 4 kV MM Machine Model 400 V

Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time.

Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices

ZLDO1117

Document number: DS32018 Rev. 6 - 2

0.2

0

0 5 10 15 20 25

Safe Operation Area (SOA) Curve

- V

(V)

V

IN

OUT

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Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

A

Symbol Parameter Min Max Unit

VIN Input voltage 2.7 (Note 8) 18 V

IO Output current 0.01 1 A TJ Operating Junction Temperature Range (Note 5) -40 +125 °C

Package Thermal Data

Thermal Resistance Package Rating Unit

Junction-to-Ambient, θJA

Junction-to-Case, θJC

Notes: 5. ZLDO1117 contains an internal thermal limiting circuit that is designed to protect the regulator in the event that the maximum junction temperature exceeded. When activated, typically at 150°C, the regulator Output switches off and then back on as the die cools.

6. Test condition for SOT223: T

7. Test condition for TO252: T

8. Ensures correct operation without entering dropout. Device will continue to operate below this minimum input voltage under dropout conditions.

= +27°C, no air flow, device mounted on 2”X2” polyimide PCB, 2 oz copper, 5.6mmX5.6mm pad.

A

= +27°C, no air flow, device mounted on 2”X2” polyimide PCB, 1 oz copper, 2cmX2cm pad.

A

SOT223 (Note 6) TO252 (Note 7)

Electrical Characteristics (@T

= +25°C, unless otherwise specified.)

A

Parameter Conditions TA Min Typ Max Unit

(VIN-V

Reference Voltage ZLDO1117-ADJ

ZLDO1117-1.2

ZLDO1117-1.5

ZLDO1117-1.8

Output Voltage

ZLDO1117-2.5

ZLDO1117-3.3

ZLDO1117-5.0 ZLDO1117-ADJ

Line Regulation

Notes: 9. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.

10. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.

ZLDO1117-1.2 ZLDO1117-xx

V 10mA < IO< 1A

IO = 10mA, VIN = 3.2V 25 1.188 1.200 1.212 V 10mA< IO< 1A, 2.7V <VIN< 12V FT 1.176 1.224 IO = 10mA, VIN = 3.5V 25 1.485 1.500 1.515 0 < IO< 1A, 2.9V <VIN< 12V FT 1.470 1.530 IO = 10mA, VIN = 3.8V 25 1.782 1.800 1.818 0 < IO< 1A, 3.2V <VIN< 12V FT 1.764 1.836 IO = 10mA, VIN = 4.5V 25 2.475 2.500 2.525 0 < IO< 1A, 3.9V <VIN< 12V FT 2.450 2.550 IO = 10mA, VIN = 5.3V 25 3.267 3.300 3.333 0 < IO< 1A, 4.7V <V IO = 10mA, VIN = 7V 25 4.95 5.000 5.05 0 < IO< 1A, 6.4V <V

IO = 10mA, V

IO = 0mA, V

) = 2V, IO = 10mA 25 1.238 1.250 1.263

OUT

+1.4V < VIN< 10V,

OUT

+1.5V<VIN<12V

OUT

+1.5V<VIN<12V

OUT

< 12V FT 3.235 3.365

IN

< 12V FT 4.900 5.100

IN

FT 1.225 1.275

25 0.1 FT 0.2 25 0.1 FT 0.2

ZLDO1117

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73 16

12

°C/W

V

%

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ZLDO1117

Electrical Characteristics (cont.) (@T

Parameter Conditions TA Min Typ Max Unit

ZLDO1117-ADJ

ZLDO1117-1.2

ZLDO1117-1.5

Load Regulation

Dropout Voltage (VIN-V

Current Limit

Minimum Load Current (Note 8)

Quiescent current GND current Thermal Regulation Ripple Rejection Temperature Stability

Notes: 8. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junctiontemperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.

9. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.

OUT

)

ZLDO1117

Document number: DS32018 Rev. 6 - 2

ZLDO1117-1.8

ZLDO1117-2.5

ZLDO1117-3.3

ZLDO1117-5.0

ZLDO1117ADJ/1.2/1.5/1.8/2.5/

3.3/5.0 ZLDO1117-

ADJ/1.2/1.5/1.8/2.5/

3.3/5.0 ZLDO1117-ADJ

ZLDO1117-1.2 ZLDO1117-xx VIN< 18V, IO = 0mA ZLDO1117-ADJ

ZLDO1117-1.2 30ms pulse f = 120Hz, C

I

= 100mA, ZLDO1117-XXX VIN = V

OUT

IO = 10mA

= 25µF Tantalum,

OUT

= +25°C, unless otherwise specified.)

A

VIN=3.3V,V (Notes 9, 10)

VIN=2.7V, 10mA < IO < 1A, (Notes 9, 10)

VIN = 3V, 0 < IO< 1A, (Notes 9, 10)

VIN = 3.3V, 0 < IO< 1A, (Notes 9, 10)

VIN = 4V, 0 < IO< 1A, (Notes 9, 10)

VIN = 4.8V, 0 < IO< 1A, (Notes 9, 10)

VIN = 6.5V, 0 < IO< 1A, (Notes 9, 10)

IO = 1A, ΔV

(VIN-V

VIN = <18V FT 2 5 mA

VIN = 7V FT 35 120 µA

=0, 10mA<IO<1A,

ADJ

= 1%V

OUT

) = 5V

OUT

+3V

OUT

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OUT

25 0.2 FT 25 0.2 % FT 0.4 25 3 FT 6 25 4 FT 8 25 5 FT 10 25 6.6 FT 13 25 10 FT 20 25 1.11 1.2

0 ~ 125

FT 25

FT 1. 1

FT 4 10 mA

25 0.1 %/W 25 60 80 dB

0.5 %

0.4

1.3

1.35

%

mV

V

A

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Typical Characteristics

0.5

0.4

Adjustable version

0.3

= 10mA

I

LOAD

0.2

0.1

0

∆Vout (%)

-0.1

-0.2

-0.3

-0.4

-0.5

-40 -25 -10 5 20 35 50 65 80 95 110 125

Output Voltage Variation vs. Temperature Line Regulation vs. Temperature

0.25

0.2

0.15

0.1

Load Regulation (%)

0.05

VIN=3.3V, 10mA<I

0

-50 -25 0 25 50 75 100 125

Load Regulation vs. Temperature Drop-Out Voltage vs. Current

Temperature (°C)

<1A

OUT

Temperature (°C)

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ZLDO1117

0.06

0.05

V

+1.5V<VIN<12V, I

0.04

0.03

0.02

Line Regulation (%)

0.01

-0.01

1.4

1.3

1.2

1.1

0.9

Dropout voltage (V)

0.8

0.7

0.6

OUT

0

-50-250 255075100125

1

0 0.2 0.4 0.6 0.8 1

=10mA

OUT

Temperature (C)

∆V

OUT

TJ = 25ºC

= 1% of V

(A)

I

OUT

1.4

Dropout vs Temperature

70 60

1.3

I

=1A

1.2

1.1

Dropout (V)

1

0.9

0.8

-50 -25 0 25 50 75 100 125 Temperature (°C)

∆V

OUT

= 1% of V

OUT

Drop-Out Voltage vs. Temperature

50

40

(µA)

30

ADJ

I

20

10

0

-50 -25 0 25 50 75 100 125 Temperature (°C)

djust Pin Input Current

ZLDO1117

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