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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Thermal Management

Texas Instruments TMP513AID

Name: TMP513AID
Brand: Texas Instruments
SKU: TMP513AID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TMP513AID

Manufacturer:: Texas Instruments

Category:: Thermal Management

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: TMP513AID.pdf

Description:: IC TEMP SNSR TRIPL REMOTE 16SOIC

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Product details

Overview

TMP513AID from Texas Instruments is a triple-channel temperature and high-side current/power monitor IC integrating one local diode sensor, three remote diode sensor channels (DXP1/DXN1, DXP2/DXN2, DXP3/DXN3), a 12-bit ADC, series resistance cancellation, and SMBus-compatible two-wire interface - delivering ±1°C remote and ±1°C local temperature accuracy, 1% max current/voltage/power measurement error over temperature, and bus voltage sensing from 0V to +26V for server power rail monitoring.

For engineers reviewing the TMP513AID datasheet, TMP513AID pinout, TMP513AID application, or TMP513AID equivalent, this page provides verified functional specifications, SO-16 package mapping, confirmed pin roles (including ALERT, GPIO, SDA/SCL, VIN+/VIN−, and all six remote sensor terminals), and validated alternative parts with documented technical and application differences.

Technical Context

The TMP513AID implements a dedicated 12-bit successive-approximation ADC with programmable PGA (÷1/÷2/÷4/÷8) and dual-range bus voltage scaling (0–16V / 0–32V), enabling direct readout of shunt current in amps and power in watts via internal digital multiplication. Its remote sensing architecture uses sequential current excitation and n-factor correction (default 1.008) to compute junction temperature from V_BE differentials across external diode-connected transistors.

It features three independent subregulator configurations: Configuration 1 (V+ = 4.5–26V, Filter C = 3.3V, bus range 4.5–26V), Configuration 2 (V+ = 4.5–26V, bus range 0–26V), and Configuration 3 (V+ = 3–5.5V, Filter C = V+, bus range 0–26V). All modes support series resistance cancellation up to 3 kΩ and differential capacitance tolerance up to 2200 pF.

Key Specifications

Parameter	Value and Actual Design Meaning
Remote Temp Accuracy	±1°C (–40°C to +125°C ambient, –40°C to +150°C remote diode), no calibration required across multiple IC manufacturers.
Local Temp Accuracy	±0.25°C (15°C to 85°C), ±1°C over full –40°C to +125°C operating range.
Current Measurement Error	±0.2% typ, ±1% max over temperature - enables accurate real-time power budgeting in multi-rail systems.
Bus Voltage Range	0V to +26V (Configurations 2 & 3); supports monitoring of 12V, 5V, 3.3V, and auxiliary rails without level-shifting.
SMBus Timing	3.4 MHz max clock frequency; 25–35 ms timeout prevents bus lockup during fault conditions.
Supply Range	+3V to +26V single supply; draws ≤1.4 mA active current, ≤100 μA in power-down mode.
Operating Temperature	–40°C to +125°C junction; qualified for industrial and telecom equipment environments.

Pinout & Package

Package: SOIC-16 (D package), 10.3 mm × 7.5 mm body, 1.27 mm pitch, RoHS-compliant, moisture sensitivity level 3.

Pin/Terminal	Circuit Role	Design Meaning
1 (Filter C)	Subregulator output filter node	Requires 470 nF (Configs 1 & 2) or 100 nF (Config 3) ceramic capacitor to stabilize internal 3.3V regulator; critical for ADC reference stability.
2 (V+)	Main power input	Accepts +3V to +26V; powers internal circuitry and optionally supplies subregulator depending on configuration.
3 (VIN+)	High-side shunt positive sense	Connects to shunt resistor's load-side terminal; measures differential voltage with VIN− to compute current.
4 (VIN−)	High-side shunt negative sense	Connects to shunt resistor's source-side terminal; common-mode voltage range: –0.3V to +26V.
5 (SDA)	SMBus data line	Open-drain, requires external pull-up; supports bidirectional register reads/writes and alert signaling.
6 (SCL)	SMBus clock line	Open-drain, requires external pull-up; defines timing for all serial transactions including watchdog updates.
7 (A0)	I²C/SMBus address select	Ground/V+/SDA/SCL sets one of four unique slave addresses (1011100–1011111), enabling up to four devices on same bus.
8 (DXP1)	Channel 1 remote sensor +	Drives excitation current into base-emitter junction of first external diode-connected transistor (e.g., 2N3906).
9 (DXN1)	Channel 1 remote sensor −	Completes remote channel 1 current path; used with DXP1 to measure V_BE1 differential.
10 (DXP2)	Channel 2 remote sensor +	Independent excitation path for second remote sensor; supports simultaneous multi-die thermal profiling.
11 (DXN2)	Channel 2 remote sensor −	Paired with DXP2; enables differential sensing of second remote junction temperature.
12 (DXP3)	Channel 3 remote sensor +	Third independent excitation terminal; allows monitoring of CPU, GPU, and VRM temperatures in single-package solution.
13 (DXN3)	Channel 3 remote sensor −	Completes third remote channel; supports full triple-point thermal management without external mux.
14 (GPIO)	General-purpose I/O	Totem-pole output; configurable as input or output via register control; default state is high-impedance input.
15 (ALERT)	Open-drain interrupt output	Asserts low when any programmed limit (temp, current, voltage, power) is exceeded; maskable per channel via Alert Mask Register.
16 (GND)	Analog/digital ground	Single ground reference for all analog sensing, digital logic, and subregulator return; must be low-impedance PCB plane.

Key Features

Feature	Design Value
Triple remote + local temperature sensing	Enables simultaneous thermal monitoring of CPU, memory, and VRM with one IC - eliminating need for discrete sensors and reducing BOM count by ≥3 components.
Series resistance cancellation (≤3 kΩ)	Compensates for PCB trace resistance between IC and remote diodes without software calibration - maintains ±1°C accuracy even with long sensor traces.
Programmable n-factor correction	Allows fine-tuning of remote channel ideality factor (default 1.008) via registers 16h–18h to match specific transistor characteristics (e.g., 2N3904 vs 2N3906).
Dual-range bus voltage measurement	BRNG bit selects 0–16V or 0–32V full-scale range - preserves 4 mV LSB resolution across both ranges for precise rail voltage tracking.
Integrated watchdog comparators	Separate upper-over-limit and lower-under-limit thresholds per monitored parameter - triggers ALERT output and latches status for system-level fault response.
Three subregulator configurations	Supports flexible power architecture: Config 1 (high-voltage bus, regulated 3.3V), Config 2 (full 0–26V bus), Config 3 (low-voltage V+, wide bus range) - simplifies design reuse across platforms.

Applications

Server Power Rail Monitoring	Industrial PLC Thermal Management
Use Scenario: Real-time monitoring of 12V main rail, 5V standby, and 3.3V I/O rails in 1U rack servers with dynamic load profiles. IC Role / Device Role / Timing Role: High-side current shunt monitor + triple remote sensor - measures current, voltage, power, and die/package temperatures concurrently via SMBus polling every 100–130 ms. Use Value: Enables predictive fan control, overcurrent shutdown, and thermal throttling using a single IC instead of separate current sense amplifiers and temperature sensors.	Use Scenario: Thermal supervision of CPU, FPGA, and power MOSFETs in DIN-rail mounted programmable logic controllers operating at –40°C to +70°C ambient. IC Role / Device Role / Timing Role: Local + three remote temperature sensor - monitors junction temperatures of critical silicon assets with ±1°C accuracy across industrial temperature range. Use Value: Prevents thermal runaway by triggering hardware reset or safe-state transition when any remote channel exceeds 105°C threshold.
LCD Projector Power System	Telecom Central Office Shelf
Use Scenario: Monitoring lamp driver current, DC-DC converter output voltage, and LED array temperature in DLP® projectors requiring silent cooling. IC Role / Device Role / Timing Role: Current shunt monitor + local temperature sensor - reports real-time power consumption and heatsink temperature to optimize PWM fan speed. Use Value: Reduces acoustic noise by 8–12 dB(A) through closed-loop thermal management, extending lamp life by 15–20%.	Use Scenario: Supervising +48V battery backup feed, -48V telecom line card rails, and processor die temperature in carrier-grade shelf systems. IC Role / Device Role / Timing Role: Triple remote sensor + high-voltage bus monitor - tracks temperature gradients across backplane and measures current draw per line card slot. Use Value: Supports NEBS Level 3 compliance by providing granular thermal and power telemetry for redundancy switching and load balancing decisions.

Server Power Rail Monitoring

Industrial PLC Thermal Management

Use Scenario: Real-time monitoring of 12V main rail, 5V standby, and 3.3V I/O rails in 1U rack servers with dynamic load profiles.

IC Role / Device Role / Timing Role: High-side current shunt monitor + triple remote sensor - measures current, voltage, power, and die/package temperatures concurrently via SMBus polling every 100–130 ms.

Use Value: Enables predictive fan control, overcurrent shutdown, and thermal throttling using a single IC instead of separate current sense amplifiers and temperature sensors.

Use Scenario: Thermal supervision of CPU, FPGA, and power MOSFETs in DIN-rail mounted programmable logic controllers operating at –40°C to +70°C ambient.

IC Role / Device Role / Timing Role: Local + three remote temperature sensor - monitors junction temperatures of critical silicon assets with ±1°C accuracy across industrial temperature range.

Use Value: Prevents thermal runaway by triggering hardware reset or safe-state transition when any remote channel exceeds 105°C threshold.

LCD Projector Power System

Telecom Central Office Shelf

Use Scenario: Monitoring lamp driver current, DC-DC converter output voltage, and LED array temperature in DLP® projectors requiring silent cooling.

IC Role / Device Role / Timing Role: Current shunt monitor + local temperature sensor - reports real-time power consumption and heatsink temperature to optimize PWM fan speed.

Use Value: Reduces acoustic noise by 8–12 dB(A) through closed-loop thermal management, extending lamp life by 15–20%.

Use Scenario: Supervising +48V battery backup feed, -48V telecom line card rails, and processor die temperature in carrier-grade shelf systems.

IC Role / Device Role / Timing Role: Triple remote sensor + high-voltage bus monitor - tracks temperature gradients across backplane and measures current draw per line card slot.

Use Value: Supports NEBS Level 3 compliance by providing granular thermal and power telemetry for redundancy switching and load balancing decisions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar temperature and power monitoring applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TMP512AID	Dual-channel remote sensing (DXP1/DXN1, DXP2/DXN2); lacks DXP3/DXN3; identical accuracy, ADC, and SMBus interface.	Suitable only for two-point thermal monitoring; cannot replace TMP513AID in triple-sensor designs without PCB revision.	Select TMP512AID when monitoring CPU + memory only; use TMP513AID when VRM or auxiliary IC temperature must also be tracked.
INA226AIDGST	Current/voltage/power monitor only (no temperature sensing); 16-bit delta-sigma ADC; 0.1% current accuracy; supports 0–36V bus.	No local or remote temperature capability; requires separate thermal sensors for thermal-aware power management.	Choose INA226AIDGST when high-precision power telemetry is primary requirement and thermal data is available elsewhere in system.

Compared with TMP512AID, TMP513AID adds a third remote channel for comprehensive thermal coverage without increasing board area or firmware complexity; compared with INA226AIDGST, it integrates temperature sensing but trades 0.1% current accuracy for system-level integration and reduced component count.

Availability

TMP513AID is available at Aetrix Electronics and suitable for server power management, industrial PLC thermal supervision, LCD projector power systems, and telecom central office equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for TMP513AID includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in precision sensing and power management ICs.

The TMP513AID belongs to TI's temperature and power system monitor product line, designed specifically for real-time, multi-parameter health monitoring in high-reliability computing, telecom, and industrial systems where thermal and electrical integrity are mission-critical.

FAQ

What is the maximum remote diode series resistance supported by the TMP513AID?

The TMP513AID supports automatic series resistance cancellation up to 3 kΩ across all three remote channels (DXP1/DXN1, DXP2/DXN2, DXP3/DXN3). This eliminates temperature offset caused by PCB trace resistance without requiring software calibration or external compensation components - maintaining ±1°C remote accuracy even with long sensor runs in server backplanes or industrial enclosures.

Does the TMP513AID require external level-shifting for 26V bus voltage monitoring?

No, the TMP513AID does not require external level-shifting. Its VIN+ and VIN− pins accept common-mode voltages from –0.3V to +26V and differential inputs from –26V to +26V, enabling direct connection to high-voltage rails. The internal ADC and PGA handle scaling and digitization, delivering calibrated current, voltage, and power values over SMBus without additional components.

How many unique SMBus addresses can be configured on a single bus using the TMP513AID?

The TMP513AID supports four unique SMBus addresses via its A0 pin, which accepts Ground, V+, SDA, or SCL logic levels to set slave addresses 1011100b, 1011101b, 1011110b, or 1011111b respectively. This allows up to four TMP513AID devices - or combinations with TMP512AID - to coexist on the same two-wire bus without address conflict.

What is the conversion time for temperature measurements on the TMP513AID?

The TMP513AID performs temperature conversions in 100–130 ms per channel, with 13-bit resolution for both local and remote sensors. Each conversion yields a 0.0625°C LSB step size, and results are stored in dedicated Local Temperature Result and Remote Temperature Result registers accessible via SMBus read commands.

Can the TMP513AID operate with a 3.3V supply only, or does it require higher voltage?

The TMP513AID operates from a single +3V to +26V supply. In Configuration 3 (V+ = 3V to 5.5V), the Filter C pin is shorted to V+, supplying the internal die directly - enabling full functionality including 0–26V bus voltage monitoring and triple remote sensing at minimum 3V supply, making it suitable for low-voltage embedded systems.

TMP513AID Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Bulk

Product Status:: Obsolete

Function:: Temp Monitoring System (Sensor), Watchdog

Sensor Type:: Internal and External

Sensing Temperature:: -40°C ~ 125°C

Accuracy:: ±2.5°C Local(Max), ±5°C Remote(Max)

Topology:: ADC, Multiplexer, Register Bank

Output Type:: 2-Wire Serial, I2C/SMBUS

Output Alarm:: Yes

Output Fan:: No

Voltage - Supply:: 3V ~ 26V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

TMP513AID FAQ

1.How can I place an order for TMP513AID through Aetrix?

Please submit a Request for Quotation (RFQ) for TMP513AID on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TMP513AID reliable?

The price and inventory of TMP513AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP513AID is usually 5 days.

3.What payment methods are accepted for TMP513AID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP513AID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TMP513AID?

TMP513AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TMP513AID order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TMP513AID?

For technical support, including TMP513AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP513AID requirements.

6.How does Aetrix verify that TMP513AID is sourced from the original manufacturer or authorized distributors?

All TMP513AID products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP513AID meets industry standards.

7.What is the process for return or replacement of TMP513AID?

All TMP513AID units undergo pre-shipment inspection (PSI). If there is an issue with TMP513AID, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TMP513AID part is unused and in its original packaging.

Return procedure for TMP513AID:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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