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Analog Devices Inc. LTC2932CF#TRPBF
- Part No.:
- LTC2932CF#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LTC2932CF#TRPBF.pdf
- Description:
- IC 6 PWR SUPPLY MONITOR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,937
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Product details
Overview
LTC2932CF#TRPBF from Analog Devices (acquired Linear Technology) is a configurable six-supply voltage monitor IC with adjustable reset timeout, ±1.5% threshold accuracy, 52μA quiescent current, and 20-lead TSSOP package. It monitors up to six supplies-including 5V, 3.3V, 2.5V, 1.8V, 1.5V, and two adjustable inputs-and delivers individual comparator outputs plus a shared open-drain RST signal for power-up/power-down sequencing in multivoltage systems.
For engineers reviewing the LTC2932CF#TRPBF datasheet, LTC2932CF#TRPBF pinout, LTC2932CF#TRPBF application, or LTC2932CF#TRPBF equivalent, key selection considerations include its 0°C to 70°C operating range, 16-mode resistive divider configuration via VPG, selectable 5–12.5% supply tolerances via T0/T1, guaranteed RST operation down to VCC = 1V, and support for both positive and negative adjustable thresholds using VREF.
Technical Context
The LTC2932CF#TRPBF implements six independent high-impedance voltage comparators with digitally configurable thresholds selected by a 16-mode external resistor divider on VPG. Each comparator features a weak 6μA internal pull-up to V2 and supports real-time status output without latching.
Its reset logic uses an external capacitor on CRT to set timeout (2ms/nF), while tolerance selection (5%, 7.5%, 10%, 12.5%) is controlled by T0/T1 digital inputs that scale VREF-enabling dynamic threshold adjustment without hardware changes. The device guarantees correct RST state down to VCC = 1V and enters a 150μs reconfiguration window when VCC rises above 2.4V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | 0°C to 70°C - Specifies industrial-grade thermal envelope for stable monitoring in desktop, telecom, and embedded systems. |
| Supply Current | 52μA typical - Enables integration into battery-powered or ultra-low-power systems without significant load impact. |
| Threshold Accuracy | ±1.5% over temperature - Ensures reliable reset assertion within tight system voltage margins, reducing false resets vs. wider-tolerance supervisors. |
| Reset Timeout Range | 25μs (open CRT) to >1s (large capacitor) - Configurable delay accommodates diverse microprocessor reset timing requirements. |
| VCC Min for RST | 1V - Guarantees valid reset state during brownout, supporting robust power-fail detection even as main supplies collapse. |
| Adjustable Inputs | V3, V4, V5, V6 with 0.5V nominal reference - Supports custom trip points for non-standard rails including negative voltages via –ADJ mode. |
| Package | 20-Lead TSSOP (4.4mm width) - Surface-mount footprint compatible with automated assembly and space-constrained PCB layouts. |
Pinout & Package
Package: 20-Lead Plastic TSSOP (4.4mm width), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COMP5 (1) | Comparator Output 5 | Open-drain logic output pulled weakly to V2; asserts high when V5 > configured threshold - enables discrete supply status monitoring. |
| V5 (2) | Adjustable Voltage Input 5 | High-impedance input with 0.5V internal reference; supports ADJ/–ADJ modes for custom positive/negative rail sensing. |
| COMP3 (3) | Comparator Output 3 | Open-drain output tied to V3 status; allows real-time enable/disable of downstream circuitry without reset propagation. |
| COMP1 (4) | Comparator Output 1 | Real-time indicator for V1 (5V or 3.3V); used for sequenced power-enable in multi-rail systems. |
| V3 (5) | Voltage Input 3 | Selectable between 2.5V, 1.8V, 1.5V, or ADJ - provides flexibility for legacy or custom core/logic rails. |
| V1 (6) | Voltage Input 1 | Primary supply input (5V or 3.3V); greater of V1/V2 sets internal VCC - determines operating voltage and powers all internal circuitry. |
| CRT (7) | Reset Timeout Capacitor | Analog timing node; 2ms/nF scaling enables precise reset hold-off for processor initialization windows. |
| RST (8) | Reset Output | Open-drain output asserted low if any monitored supply falls below threshold; guaranteed active down to VCC = 1V. |
| T0 (9) | Tolerance Select Bit 0 | Digital input (with T1) selecting global supply tolerance: 5%, 7.5%, 10%, or 12.5% - scales VREF to shift all thresholds simultaneously. |
| RDIS (10) | Reset Disable Input | Active-low control forcing RST high regardless of supply status - essential for margin testing without triggering system reset. |
| T1 (11) | Tolerance Select Bit 1 | Second bit of 2-bit tolerance selector; pairs with T0 to configure four distinct trip-point offsets across all six inputs. |
| GND (12) | Ground Reference | Common return for all analog and digital functions; requires low-impedance connection to minimize noise coupling into comparators. |
| VPG (13) | Mode Selection Input | Analog voltage derived from external 1% resistor divider between VREF and GND - selects one of 16 predefined voltage combinations. |
| VREF (14) | Buffered Reference Output | 1.210V ±1.5% buffered source (±1mA drive); used for VPG divider and –ADJ offset - eliminates need for external reference. |
| V4 (15) | Voltage Input 4 | Selectable between 1.8V, 1.5V, ADJ, or –ADJ - supports dual adjustable rails including negative supplies referenced to VREF. |
| V2 (16) | Voltage Input 2 | Secondary supply input (3.3V, 3V, or 2.5V); greater of V1/V2 defines VCC and serves as internal pull-up rail for all COMPn/RST outputs. |
| COMP4 (17) | Comparator Output 4 | Independent status flag for V4; enables per-rail fault isolation and selective power management in complex systems. |
| COMP2 (18) | Comparator Output 2 | Real-time indicator for V2 supply - critical for validating auxiliary rail integrity before enabling dependent subsystems. |
| V6 (19) | Adjustable Voltage Input 6 | High-Z input with 0.5V reference; always in ADJ mode - provides sixth flexible monitoring channel for custom or backup rails. |
| COMP6 (20) | Comparator Output 6 | Final status output for V6; completes full six-rail visibility - used in redundancy schemes or multi-source power validation. |
Key Features
| Feature | Design Value |
|---|---|
| 16-Mode Resistor-Configurable Thresholds | Enables single BOM part to support diverse multivoltage systems (e.g., 5V/3.3V/2.5V/1.8V/ADJ/ADJ) without redesigning firmware or layout. |
| ±1.5% Threshold Accuracy Over Temperature | Reduces required system voltage margin by ~1.75% compared to ±3% supervisors, improving reliability near supply limits. |
| Adjustable Reset Timeout via CRT Pin | Eliminates need for fixed-timing RC networks; supports precise match to processor reset requirements from microseconds to seconds. |
| Reset Disable (RDIS) Pin | Allows in-system supply margin testing under processor control without disrupting system operation or triggering unintended resets. |
| Support for Negative Adjustable Thresholds | Enables direct monitoring of negative rails (e.g., –5.2V) using VREF as level-shift reference - no external op-amps or bias networks required. |
| Guaranteed RST Operation Down to VCC = 1V | Ensures fail-safe reset assertion during deep brownout, preventing undefined MCU states when primary supplies collapse. |
Applications
| Desktop and Notebook Computers | Telecom Equipment |
|---|---|
Use Scenario: Monitoring 12V, 5V, 3.3V, 2.5V, 1.8V, and 1.2V rails during cold start and hot-swap events. IC Role / Device Role / Timing Role: Six-rail supervisor providing individual status flags (COMP1–COMP6) and synchronized RST for CPU/ASIC power sequencing. Use Value: Prevents boot failure by ensuring all rails stabilize before releasing reset; ±1.5% accuracy avoids nuisance resets during transient load steps. | Use Scenario: Validating redundant +48V DC distribution, intermediate 12V/5V conversion, and FPGA core (1.8V) and I/O (3.3V) supplies. IC Role / Device Role / Timing Role: Centralized supply health monitor with RDIS-enabled margin testing for field-replaceable units. Use Value: Enables remote verification of supply headroom without service interruption; 52μA current minimizes standby power draw. |
| Network Servers | Automotive Infotainment |
Use Scenario: Sequencing power to CPU, memory, PCIe switches, and storage controllers during warm reboot. IC Role / Device Role / Timing Role: Real-time sequencer using COMP outputs to enable DC/DC converters in strict order, with RST released after final rail stabilizes. Use Value: Eliminates need for dedicated sequencer ICs; 16-mode configuration supports multiple server SKUs from one BOM item. | Use Scenario: Monitoring 12V battery input, 5V USB, 3.3V MCU, 1.8V DSP, ADJ camera sensor, and –ADJ audio amplifier rails. IC Role / Device Role / Timing Role: Multirail supervisor with –ADJ capability for analog audio stages and programmable thresholds for varying battery conditions. Use Value: Single-chip solution replaces discrete comparators and references; T0/T1 dynamic tolerance adjustment adapts to cold-cranking voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar six-supply monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS386000RGPT | Fixed 6-input thresholds (no resistor-programmable modes); 2.5% threshold accuracy; 16-pin WQFN package. | Lacks VPG-based configuration flexibility and ±ADJ support; suited for fixed-rail designs only. | Select when design uses only standard rails and board space is constrained (smaller package). |
| MAX6816EUP+ | Quad supply monitor (not six); ±2% accuracy; includes watchdog timer; 20-pin TSSOP. | Insufficient input count for full six-rail coverage; adds watchdog functionality not present in LTC2932CF#TRPBF. | Select when system requires integrated watchdog and only four rails need supervision. |
Compared with TPS386000RGPT and MAX6816EUP+, the LTC2932CF#TRPBF offers unique configurability across 16 voltage combinations, superior ±1.5% threshold accuracy, and native support for negative adjustable rails - making it optimal for complex, evolving multivoltage platforms where BOM consolidation and future-proofing are critical.
Availability
LTC2932CF#TRPBF is available at Aetrix Electronics and suitable for desktop computers, telecom equipment, and network servers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for LTC2932CF#TRPBF 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
Analog Devices, Inc. (ADI) is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.
The LTC2932CF#TRPBF belongs to ADI's precision power monitoring product line, designed specifically for reliable, low-power, multi-rail supervision in computing, communications, and industrial systems where accuracy, configurability, and thermal robustness are essential.
FAQ
What is the operating temperature range of the LTC2932CF#TRPBF?
The LTC2932CF#TRPBF is rated for operation from 0°C to 70°C, qualifying it for commercial and industrial environments where ambient temperatures remain within this envelope. This grade is distinct from the I-grade (–40°C to 85°C) and H-grade (–40°C to 125°C) variants. The LTC2932CF#TRPBF maintains full electrical specifications-including ±1.5% threshold accuracy and 52μA supply current-across this entire range.
How does the VPG pin configure the LTC2932CF#TRPBF's voltage monitoring modes?
The VPG pin on the LTC2932CF#TRPBF accepts a voltage derived from an external 1% resistor divider between VREF and GND. This voltage selects one of 16 predefined monitoring configurations (e.g., 5V/3.3V/2.5V/1.8V/ADJ/ADJ). For example, a VPG/VREF ratio of 0.406 configures Mode 6 (5V/3.3V/2.5V/1.8V), while 0.906 selects Mode 14 (5V/3.3V/1.8V/ADJ). The LTC2932CF#TRPBF samples VPG during a 150μs setup window after VCC exceeds 2.4V.
Can the LTC2932CF#TRPBF monitor negative supply voltages?
Yes, the LTC2932CF#TRPBF supports negative voltage monitoring via its –ADJ mode on the V4 input. In this mode, VREF (1.210V) serves as the reference level shift, and an external resistor divider between the negative supply and VREF sets the trip point using VTRIP = −VREF × (R3/R4). For instance, a –5.2V rail can be monitored with R3 = 487kΩ and R4 = 121kΩ. The V4 pin must be configured for –ADJ in the selected mode (e.g., Mode 1 or Mode 3 from Table 1).
What is the function of the RDIS pin on the LTC2932CF#TRPBF?
The RDIS (Reset Disable) pin on the LTC2932CF#TRPBF is an active-low digital input that forces the RST output high regardless of supply voltage conditions. When pulled low, RDIS overrides all comparator decisions and holds RST at V2 (or external pull-up voltage), enabling safe supply margin testing under processor control. The pin features a weak internal 10μA pull-up, so it may be left floating for normal operation.
How is the reset timeout period set on the LTC2932CF#TRPBF?
The reset timeout period on the LTC2932CF#TRPBF is set by connecting an external capacitor (CRT) between the CRT pin and GND. The timeout follows tRST ≈ CRT × 2MΩ (i.e., 2ms/nF). For example, a 47nF capacitor yields ~94ms. Leaving CRT unconnected gives a minimum ~25μs delay. Ceramic capacitors with low leakage are recommended, as leakage current directly impacts timing accuracy. The LTC2932CF#TRPBF guarantees correct RST behavior across the full timeout range.
LTC2932CF#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Six Power Supply Monitor
- Voltage - Input:
- -
- Voltage - Supply:
- 1V ~ 7V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
LTC2932CF#TRPBF FAQ
1.How can I place an order for LTC2932CF#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2932CF#TRPBF 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 LTC2932CF#TRPBF reliable?
The price and inventory of LTC2932CF#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2932CF#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2932CF#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2932CF#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2932CF#TRPBF?
LTC2932CF#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2932CF#TRPBF 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 LTC2932CF#TRPBF?
For technical support, including LTC2932CF#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2932CF#TRPBF requirements.
6.How does Aetrix verify that LTC2932CF#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2932CF#TRPBF 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 LTC2932CF#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2932CF#TRPBF?
All LTC2932CF#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2932CF#TRPBF, 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 LTC2932CF#TRPBF part is unused and in its original packaging.
Return procedure for LTC2932CF#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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