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ZLDO1117

Document number: DS32018 Rev. 6 - 2

1 of 14

www.diodes.com

July 2012

ZLDO1117

Product Line o

Diodes Incorporated

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)

Pin Assignments

SOT223

TO252

Adj (GND)

Vout

Vin

Tab is Vout

(Top View)

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.

Typical Applications Circuit

1A I/O – 1.8V Core Regulator

3.3V

4.7µF

MLCC

ZLDO1117-18

1.8V

4.7µF

MLCC

Summary of content (14 pages)

PAGE 1
A Product Line of Diodes Incorporated ZLDO1117 1A LOW DROPOUT POSITIVE REGULATOR 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5.0V AND ADJUSTABLE OUTPUTS Description Pin Assignments ZLDO1117 is a low dropout positive adjustable or fixed-mode SOT223 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.
PAGE 2
A Product Line of Diodes Incorporated ZLDO1117 Pin Descriptions Pin Name I/O Pin Number Adj (GND) I 1 VOUT O 2 VIN I 3 Function A resistor divider from this pin to the VOUT pin and ground sets the output voltage (Ground only for 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.
PAGE 3
A Product Line of Diodes Incorporated ZLDO1117 Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Symbol Parameter Min Max Unit 2.7 (Note 8) 18 V Output current 0.01 1 A Operating Junction Temperature Range (Note 5) -40 +125 °C VIN Input voltage IO TJ Package Thermal Data Thermal Resistance Rating Unit Junction-to-Ambient, θJA SOT223 (Note 6) TO252 (Note 7) 107 73 °C/W Junction-to-Case, θJC SOT223 (Note 6) TO252 (Note 7) 16 12 °C/W Notes: Package 5.
PAGE 4
A Product Line of Diodes Incorporated ZLDO1117 Electrical Characteristics (cont.) (@TA = +25°C, unless otherwise specified.) Parameter ZLDO1117-ADJ Load Regulation Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current (Note 8) Quiescent current Conditions VIN=3.3V,VADJ=0, 10mA
PAGE 5
A Product Line of Diodes Incorporated ZLDO1117 Typical Characteristics 0.06 0.5 0.4 0.05 Adjustable version ILOAD = 10mA 0.3 Line Regulation (%) ∆Vout (%) 0.2 0.1 0 -0.1 -0.2 VOUT+1.5V
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A Product Line of Diodes Incorporated ZLDO1117 Typical Characteristics ZLDO1117-2.5V CIN = 1µF, COUT = 10µFTANT IPRELOAD = 100mA, Istep = 500mA ZLDO1117-2.5V CIN = 1µF, COUT = 4.7µF MLCC IPRELOAD = 100mA, ISTEP = 500mA 10mV 10mV 0 0 -10mV -10mV 600mA 600mA 100mA 100mA Transient Load Regulation with 10µF Tantalum Capacitor Transient Load Regulation with 4.7µF MLCC Capacitor ZLDO1117 2.5V CIN = 1µF, COUT = 4.7µF MLCC ILOAD = 100mA 10 0 5V 4V 10µs/div Transient Line Regulation with 4.
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A Product Line of Diodes Incorporated ZLDO1117 Application Information The ZLDO1117 family of quasi-LDO regulators is easy to use. They are protected against short circuit and thermal overloads. (see block diagram). Thermal protection circuitry will shut down the regulator should the junction temperature exceed +150°C at the sense point. The ZLDO1117 is pin compatible with similar ‘1117 regulators and offers extended temperature range and improved regulation specifications.
PAGE 8
A Product Line of Diodes Incorporated ZLDO1117 Typical Application Circuits Using ⎧ R2 ⎫ VOUT = 1.25 • ⎨1 + ⎬ R1 ⎭ ⎩ then the output voltage becomes: ⎧ 330 ⎫ VOUT = 1.25 • ⎨1 + ⎬ = 5.0 V ⎩ 110 ⎭ Figure 1 Basic Adjustable Regulator with 5V Output Figure 2 Adjustable Regulator with IADJ Errors ⎧ R2 ⎫ VOUT = 1.25 • ⎨1 + ⎬ + IADJ • R2 ⎩ R1 ⎭ Because IADJ typically is 55μA, its effect is negligible in most applications. ⎧ 330 ⎫ VOUT = 1.25 • ⎨1 + + 55 • 10 − 6 • 330 ⎬ = 5.02 V ~ 0.4% ⎭ ⎩ 110 A.
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A Product Line of Diodes Incorporated ZLDO1117 Other Application Circuits Figure 3 ZLDO1117 with Extended Output Voltage ZLDO1117 VIN IN VOUT OUT R1 121Ω 1% ADJ C1 10 F TTL T1 MMBT3904 R3 1k R4 1k C2 100 F R2 365Ω 1% Figure 4 ZLDO1117 with Disable Function ZLDO1117x50 AC IN IN OUT ADJ C1 10 F C2 100 F VOUT = -5V Figure 5 ZLDO1117 as a Negative LDO ZLDO1117 Document number: DS32018 Rev. 6 - 2 9 of 14 www.diodes.
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A Product Line of Diodes Incorporated ZLDO1117 Ordering Information Part Number ZLDO1117KTC ZLDO1117GTA ZLDO1117K12TC ZLDO1117G12TA ZLDO1117K15TC ZLDO1117G15TA ZLDO1117K18TC ZLDO1117G18TA ZLDO1117K25TC ZLDO1117G25TA ZLDO1117K33TC ZLDO1117G33TA ZLDO1117K50TC ZLDO1117G50TA ZLDO1117QKTC ZLDO1117QGTA ZLDO1117QK12TC ZLDO1117QG12TA ZLDO1117QK15TC ZLDO1117QG15TA ZLDO1117QK18TC ZLDO1117QG18TA ZLDO1117QK25TC ZLDO1117QG25TA ZLDO1117QK33TC ZLDO1117QG33TA ZLDO1117QK50TC ZLDO1117QG50TA Note: Output Voltage Adjustable
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A Productt Line of Diodes Incorrporated D ZL LDO1117 Marking In nformation n TO252 SOT223 ZLDO1117 Document numberr: DS32018 Rev. 6 - 2 11 of 14 www.diodes.
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A Product Line of Diodes Incorporated ZLDO1117 Package Outline Dimensions (All dimensions in mm.) SOT223 SOT223 Dim Min Max Typ A 1.55 1.65 1.60 A1 0.010 0.15 0.05 b1 2.90 3.10 3.00 b2 0.60 0.80 0.70 C 0.20 0.30 0.25 D 6.45 6.55 6.50 E 3.45 3.55 3.50 E1 6.90 7.10 7.00 e — — 4.60 e1 — — 2.30 L 0.85 1.05 0.95 Q 0.84 0.94 0.89 All Dimensions in mm A A1 TO252 E A b3 c2 L3 A2 D E1 H L4 A1 L e 2X b2 3X b ZLDO1117 Document number: DS32018 Rev. 6 - 2 a 12 of 14 www.diodes.
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A Product Line of Diodes Incorporated ZLDO1117 Suggested Pad Layout SOT223 X1 Dimensions X1 X2 Y1 Y2 C1 C2 Y1 C1 Value (in mm) 3.3 1.2 1.6 1.6 6.4 2.3 Y2 C2 X2 TO252 X2 Dimensions Z X1 X2 Y1 Y2 C E1 Y2 C Z Y1 X1 ZLDO1117 Document number: DS32018 Rev. 6 - 2 Value (in mm) 11.6 1.5 7.0 2.5 7.0 6.9 2.3 E1 13 of 14 www.diodes.
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A Product Line of Diodes Incorporated ZLDO1117 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).