Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - power management - special purpose 45 µA WSON 10 (3x3)

PGOOD

LM21215A-1

OUT

AGND

COMP

PVIN

OUT

FB1

FB2

PGND

AVIN

11-16

8,9,10

5,6,7

SS/

TRK

optional

HTSSOP-20

GND

VIDA

WSON-10

3 mm x 3 mm

VIDB

VIDC

VIDS

VDD

IDAC_OUT

0 - 59.2 PA

LM10010

SYNC

CORE

3V to 5.5V

VID

Interface

VDD

LM10010

www.ti.com

SNVS717C –JULY 2011–REVISED MARCH 2013

LM10010 VID Voltage Programmer for Point of Load Regulator

Check for Samples: LM10010

FEATURES

DESCRIPTION

The LM10010 is a precision, digitally programmed

• Output Current Accuracy (-40°C to +125°C)

device used to control the output voltage of a DC/DC

• Input Voltage Range: 3V to 5.5V

converter. The LM10010 outputs a DC current

• 6-Bit Current DAC That Connects Directly to

inversely proportional to a 6-bit input word. This

the Feedback Node of an External Regulator to

current DAC output connects to the feedback pin of a

regulator in order to adjust its output voltage to a

Provide Output Voltage Control

desired range and resolution set by the user. As the

• Precision Enable to Support Custom UVLO

6-bit word counts up, the output voltage is adjusted

• WSON-10 3 mm x 3 mm Footprint, 0.5 mm

higher based on the setting of the feedback resistors

Pitch

in the converter.

• Compatible With the TMS320C66XX DSP Smart

The LM10010 is designed to program point of load

Reflex Technology

regulators with adjustable resistor feedback networks

for VID (Voltage Identification).

APPLICATIONS

• Broadband, Networking, and Wireless

Communications

• Notebook and Palmtop Computers, PDAs

• Portable Instruments

• Battery-Powered Equipment

• Powering Digital Loads With a 6-Bit, 4 Pin VID

Interface

Typical Application Circuit

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (17 pages)

PAGE 1
LM10010 www.ti.com SNVS717C – JULY 2011 – REVISED MARCH 2013 LM10010 VID Voltage Programmer for Point of Load Regulator Check for Samples: LM10010 FEATURES DESCRIPTION • • • The LM10010 is a precision, digitally programmed device used to control the output voltage of a DC/DC converter. The LM10010 outputs a DC current inversely proportional to a 6-bit input word.
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LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com Connection Diagram GND 1 10 VIDS IDAC_OUT 2 9 VIDC VDD 3 8 VIDB EN 4 7 VIDA NC 5 6 NC DAP Figure 1. Top View WSON-10 3mm x 3mm 0.5mm pitch Pin Descriptions 2 Pin No. Name Description 1 GND Ground. 2 IDAC_OUT 3 VDD 4 EN Precision enable input. 5 NC No Connect. 6 NC No Connect. 7 VIDA VID digital input: Bit 0 when VIDS transitions low; Bit 3 when VID transitions high.
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LM10010 www.ti.com SNVS717C – JULY 2011 – REVISED MARCH 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) VDD, EN, IDAC_OUT -0.3V to 6V VIDA, VIDB, VIDC, VIDS -0.
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LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com Electrical Characteristics (continued) Limits in standard type are for TJ = 25°C only. Limits appearing in boldface type apply over the full operating junction temperature range (-40°C < TJ < +125°C). Unless otherwise noted, specifications apply to the Typical Application Circuit. See (1) . Symbol Parameter DNL Offset VOUT_MAX VID Logic Inputs (2) Conditions Differential non-linearity Min. Typ. Max. Units -0.25 0.06 0.
PAGE 5
LM10010 www.ti.com SNVS717C – JULY 2011 – REVISED MARCH 2013 Typical Performance Characteristics Unless otherwise specified, the following conditions apply: TJ = 25°C, VDD = 5V. All graphs show junction temperature.
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LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified, the following conditions apply: TJ = 25°C, VDD = 5V. All graphs show junction temperature. UVLO Thresholds EN (Enable) Threshold 1.45 1.40 Rising Rising VOLTAGE (V) VOLTAGE (V) 2.7 2.6 2.5 2.4 Falling 2.3 -40 -20 1.35 1.30 1.25 1.20 Falling 1.15 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) 0 20 40 60 80 100 120 140 TEMPERATURE (°C) Figure 9.
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LM10010 www.ti.com SNVS717C – JULY 2011 – REVISED MARCH 2013 BLOCK DIAGRAM Edge-Detector VIDS Logic Receiver Logic Receiver 3 Ps deglitch Update DAC fall D VIDC 3 Ps deglitch rise 6 Ps deglitch rise Q VID[5] R Q UVLO D fall Q VID[2] R Q UVLO D VIDB Logic Receiver 3 Ps deglitch rise Q VID[4] R Q UVLO D fall Q VID[1] R Q UVLO D VIDA Logic Receiver 3 Ps deglitch rise VID[3] R Q UVLO D fall VDD Q UVLO (VDD > 2.65V) Q VID[0] 6 bit IDAC R Q PRECISION ENABLE (1.
PAGE 8
LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com Theory of Operation The LM10010 can be thought of as a D/A converter, converting the VID communication to analog outputs. In this device, the output is a current DAC (IDAC_OUT), which is connected to the feedback node of a slave regulator. Therefore, all VID data words are decoded into a 6-bit current DAC output. The impedance of the feedback node at DC appears as the top feedback resistor.
PAGE 9
LM10010 www.ti.com SNVS717C – JULY 2011 – REVISED MARCH 2013 Deglitch Time The four digital input pins all have deglitch filters which prevent transient noise from affecting the operation of the LM10010. These filters will also impart a small delay to the digital signal. On the VIDS latching signal, there is an additional delay. As mentioned previously, this allows for the VID data lines and the VIDS strobe to be set simultaneously without the need for setup time.
PAGE 10
LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com APPLICATION INFORMATION Design Example In this example, an LM21215A-1 is used as the buck regulator to provide CVDD to the TMS320C6670 or TMS320C6678 from 0.7V to 1.1V and an output current of up to 15A. The LM10010 in conjunction with VID control from the DSP, provides control of the output voltage within this range with 6 bits of resolution. For this example, the 400 mV of voltage range translates to a 6.
PAGE 11
LM10010 www.ti.com SNVS717C – JULY 2011 – REVISED MARCH 2013 The change in the output voltage can be analyzed based on the resolution of the current DAC from the LM10010 compared to the desired resolution of the output swing of the regulator. RFB1 is designed to provide the desired LSB for VOUT with the equation: (2) Based on the desired default VOUT (with IDAC_OUT = 0 µA), RFB2 can be solved from Eq. 1 above. Example Solution Assuming a 400 mV output range, 64 VID codes, and an IDAC LSB of 0.
PAGE 12
LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision B (March 2013) to Revision C • 12 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LM10010SD/NOPB WSON DSC 10 1000 178.0 12.4 3.3 3.3 1.0 8.0 12.0 Q1 LM10010SDX/NOPB WSON DSC 10 4500 330.0 12.4 3.3 3.3 1.0 8.0 12.
PAGE 15
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM10010SD/NOPB WSON DSC 10 1000 210.0 185.0 35.0 LM10010SDX/NOPB WSON DSC 10 4500 367.0 367.0 35.
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MECHANICAL DATA DSC0010A SDA10A (Rev A) www.ti.
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