Instruction Manual

ManualsBrandsDiodes ManualsHardwareAP7176B

AP7176B

Document number: DS35818 Rev.3 - 2

1 of 14

www.diodes.com

April 2014

NEW PRODUCT

P7176B

3A ULTRA LOW DROPOUT LINEAR REGULATOR WITH ENABLE

Description

The AP7176B is a 3.0A ultra low-dropout (LDO) linear regulator that

features an enable input and a power-good output.

The enable input and power-good output allow users to configure

power management solutions that can meet the sequencing

requirements of FPGAs, DSPs, and other applications with different

start-up and power-down requirements.

The AP7176B features two supply inputs, for power conversion

supply and control. With the separation of the control and the power

input very low dropout voltages can be reached and power dissipation

is reduced.

A precision reference and feedback control deliver 1.5% accuracy

over load, line, and operating temperature ranges.

The AP7176B is available in SO-8EP, MSOP-8EP and U-DFN3030-

10 package with an exposed PAD to reduce the junction to case

resistance and extend the temperature range it can be used in.

Features

• V

Range: 1.2V to 3.65V V

CNTL

3.0V to 5.5V

• Adjustable Output Voltage

• Continuous Output Current I

OUT

= 3A

• Fast Transient Response

• Power on reset monitoring on V

CNTL

and V

• Internal Soft-Start

• Stable with Low ESR MLCC Capacitors

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

Applications

• Notebook

• PC

• Netbook

• Wireless Communication

• Server

• Motherboard

• Dongle

• Front Side Bus VTT (1.2V/3.3A)

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html 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.

U-DFN3030-10

VCNTL

VIN

VOUT

GND

(Top View)

Summary of content (14 pages)

PAGE 1
AP7176B 3A ULTRA LOW DROPOUT LINEAR REGULATOR WITH ENABLE Description Pin Assignments The AP7176B is a 3.0A ultra low-dropout (LDO) linear regulator that features an enable input and a power-good output. The enable input and power-good output allow users to configure power management solutions that can meet the sequencing requirements of FPGAs, DSPs, and other applications with different NEW PRODUCT start-up and power-down requirements.
PAGE 2
AP7176B NEW PRODUCT Typical Applications Circuit Figure 1 Typical Application Circuit Pin Descriptions Pin Number MSOP-8EP U-DFN3030-10 Pin Name SO-8EP PG 1 1 5 EN 2 2 6 VIN 3 3 7,8,9 VCNTL 4 4 10 NC VOUT FB 5 6 7 5 6 7 1,2,3 4 GND PAD 8 EP 8 EP 11 EP Function Power Good.Output open drain to indicate the status of VOUT via monitoring the FB pin.
PAGE 3
AP7176B Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.) NEW PRODUCT Symbol VIN VCNTL VOUT TJ TSTG PG to GND Voltage EN, FB to GND Voltage Power Dissipation (SO-8EP) Power Dissipation (MSOP-8EP) Power Dissipation (U-DFN3030-10) Maximum Junction Temperature Storage Temperature TSDR Maximum Lead Soldering Temperature, 10 Seconds PD Note: Parameter VIN Supply Voltage (VIN to GND) VCNTL Supply Voltage (VCNTL to GND) VOUT to GND Voltage Rating -0.3 to +4.0 -0.3 to +7.0 -0.
PAGE 4
AP7176B Electrical Characteristics (cont.) (Specifications apply over VCNTL = 5V, VIN = 1.8V, VOUT = 1.2V and TA = -40°C to +85°C, typical values @TA = +25°C, unless otherwise specified.) Symbol Parameter Conditions Min AP7176B Typ Max Unit OUTPUT VOLTAGE Reference Voltage Output Voltage Accuracy Load Regulation Line Regulation VOUT Pull-low Resistance FB Input Current DROPOUT VOLTAGE NEW PRODUCT VREF FB=VOUT VCNTL = 3.0 ~ 5.5V, IOUT = 0~3A, TJ = -40 to +125°C IOUT =0A to 3A IOUT =10mA, VCNTL = 3.
PAGE 5
AP7176B NEW PRODUCT Typical Characteristics AP7176B Document number: DS35818 Rev.3 - 2 5 of 14 www.diodes.
PAGE 6
AP7176B NEW PRODUCT Typical Characteristics (cont.) AP7176B Document number: DS35818 Rev.3 - 2 6 of 14 www.diodes.
PAGE 7
AP7176B NEW PRODUCT Typical Characteristics (cont.) AP7176B Document number: DS35818 Rev.3 - 2 7 of 14 www.diodes.
PAGE 8
AP7176B Operating Waveforms (Test Conditions VIN = 1.8V, VCNTL = 5V, VOUT 1.2V, TA = +25°C unless otherwise specified.) Power On Power Off VCNTL VCNTL VIN VIN VOUT NEW PRODUCT VOUT VPG VPG COUT =10µF, CIN =10µF, RL = 0.4Ω CH1: VCNTL, 5V/Div, DC CH2: VIN, 1V/Div, DC CH3: VOUT, 1V/Div, DC CH4: VPG, 5V/Div, DC TIME: 2ms/Div COUT = 10µF, CIN =10µF, RL = 0.
PAGE 9
AP7176B Application Information Power Good and Delay AP7176B monitors the feedback voltage VFB on the FB pin. An internal delay timer is started after the PG voltage threshold (VTHPG) on the FB pin is reached. At the end of the delay time an internal NMOS of the PG is turned off to indicate that the power at the output is good (PG).
PAGE 10
AP7176B Application Information (cont.) Output Capacitor An output capacitor (COUT) is needed to improve transient response and maintain stability. The ESR (equivalent series resistance) and capacitance drives the selection. Care needs to be taken to cover the entire operating temperature range. The output capacitor can be an Ultra-Low-ESR ceramic chip capacitor or a low ESR bulk capacitor like a solid tantalum, POSCap or aluminum electrolytic capacitor.
PAGE 11
AP7176B NEW PRODUCT Ordering Information 13” Tape and Reel Part Number Package Code Packaging AP7176BSP-13 AP7176BMP-13 AP7176BFN-7 SP MP FN SO-8EP MSOP-8EP U-DFN3030-10 Quantity 2500/Tape & Reel 2500/Tape & Reel 3000/Tape & Reel Part Number Suffix -13 -13 -7 Marking Information (1) SO-8EP (2) MSOP-8EP (3) U-DFN3030-10 ( Top View ) XX YWX Part No. AP7176B AP7176B Document number: DS35818 Rev.
PAGE 12
AP7176B Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (1) SO-8EP Exposed Pad 8 5 E1 1 H 4 NEW PRODUCT F b Bottom View 9° (All sides) N 7° A e D (2) E 45° Q 4° ± 3° E0 A1 C Gauge Plane Seating Plane L SO-8EP (SOP-8L-EP) Dim Min Max Typ A 1.40 1.50 1.45 A1 0.00 0.13 b 0.30 0.50 0.40 C 0.15 0.25 0.20 D 4.85 4.95 4.90 E 3.80 3.90 3.85 E0 3.85 3.95 3.90 E1 5.90 6.10 6.00 e 1.27 F 2.75 3.35 3.05 H 2.
PAGE 13
AP7176B Package Outline Dimensions (cont.) (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (3) U-DFN3030-10 A3 A D D2 Pin#1 ID NEW PRODUCT U-DFN3030-10 Dim Min Max Typ A 0.57 0.63 0.60 A1 0 0.05 0.02 A3 0.15 ⎯ ⎯ b 0.20 0.30 0.25 D 2.90 3.10 3.00 D2 2.30 2.50 2.40 e 0.50 ⎯ ⎯ E 2.90 3.10 3.00 E2 1.50 1.70 1.60 L 0.25 0.55 0.40 z ⎯ ⎯ 0.
PAGE 14
AP7176B Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. (3) U-DFN3030-10 Y C X1 G Dimensions Value (in mm) Z 2.60 G 0.15 X 1.80 X1 0.60 Y 0.30 C 0.