TPS3700DDCR - 18V Window Voltage Detector | Texas Instruments
N.º de pieza: TPS3700DDCR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.42 | $1,42 |
| 10 | $1.28 | $12,80 |
| 100 | $1.05 | $105,00 |
| 500 | $0.89 | $445,00 |
| 1.000 | $0.74 | $740,00 |
| 3.000 | $0.62 | $1.860,00 |
TPS3700DDCR Descripción general
A window comparator (also called a window voltage detector or dual-voltage supervisor) is a power-management IC that asserts a fault output whenever a monitored rail falls outside a user-defined upper-and-lower voltage window. It belongs to the broader hierarchy supervisor IC -> voltage monitor -> power management IC -> semiconductor. Window comparators are essential where both undervoltage (UV) and overvoltage (OV) events can damage downstream loads, and they replace two single-channel supervisors with one part and one reference, simplifying board layout and improving threshold tracking.
The TPS3700 can be used as a true window detector or as two independent voltage monitors. The OVH and OVL pins drive two separate open-drain outputs that can be pulled up to any rail up to 18 V, enabling direct interface to microcontrollers, FPGAs, or downstream logic. The internal 400 mV reference enables very low threshold settings using external resistor dividers, and the wide 1.8 V to 18 V supply lets a single part supervise 3.3 V, 5 V, 12 V, and 15 V rails from the same device. The high threshold accuracy of 1.0% over temperature ensures reliable fault detection in production systems without false triggering.
Typical applications include industrial 24V/12V rail monitoring (with the detector powered from a separate low-voltage rail), automotive battery and ECU voltage supervision, FPGA/MCU core and I/O rail sequencing, and USB Type-C VBUS monitoring. The 6-pin SOT-23-THIN (DDC) package makes the part suitable for compact PCB designs where board area is at a premium.
When designing with the TPS3700DDCR, select external resistor dividers so the trip points fall within the 400 mV to (Vsupply - 400 mV) common-mode range of the inputs. Pull-up resistors on the open-drain outputs must be sized for the desired response time versus quiescent leakage, and supply decoupling with a 0.1 uF ceramic capacitor close to VDD is recommended. This page synthesizes distributor pricing, drop-in alternatives in the same DDC footprint, and practical design guidance not found in the manufacturer datasheet.
Alternativas directas para TPS3700DDCR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con TPS3700DDCR (mismo factor de forma y huella) — difiere en Package, Function, MSL Level, Operating Temperature Range, Output Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TPS3700DDCT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS3700DDCR2
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS3702AX18DDCR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TLV6700DDCR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MAX16054
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS3700DDCR Especificaciones
| Función | Window voltage detector (overvoltage + undervoltage) |
| Number of Monitored Voltages | 2 (OV and UV) |
| Supply Voltage Range (VDD) | 1.8 V to 18 V |
| Internal Reference Voltage | 400 mV |
| Threshold Accuracy Over Temperature | 1.0% (0.25% typical) |
| Quiescent Current (Typical) | 5.5 uA |
| Quiescent Current (Maximum) | 11 uA |
| Tipo de salida | Open-Drain (OV and UV channels) |
| Maximum Output Pull-Up Voltage | 18 V |
| Rango de temperatura de funcionamiento | -40C to +125C |
| Encapsulado | SOT-23-THIN (DDC), 6 pins |
| Tipo de montaje | Surface Mount |
| Nivel MSL | MSL2 - 260C - 1 YEAR |
| Estado RoHS | Compliant |
| Number of Channels | 2 (independent or window) |
Configuración de pines de TPS3700DDCR
| Pin 1 | OVH — Overvoltage detect output, open-drain |
| Pin 2 | GND — Ground |
| Pin 3 | OVL — Undervoltage detect output, open-drain |
| Pin 4 | UVIN — Undervoltage sense input (vs internal 400 mV reference) |
| Pin 5 | OV/UVSET — Overvoltage sense input / threshold set |
| Pin 6 | VDD — Supply voltage, 1.8 V to 18 V |
Aplicaciones típicas
TPS3700DDCR es adecuado para 6 aplicacións: Industrial 24V/12V Rail Supervision, Automotive Battery Voltage Monitoring, FPGA/MCU Multi-Rail Sequencing, USB Type-C VBUS Monitor, Battery Charger Voltage Window, Server/Hot-Swap Power Rail Monitor.
Industrial 24V/12V Rail Supervision
The TPS3700DDCR monitors 12 V and 15 V industrial rails with its 1.8 V to 18 V supply range and 400 mV internal reference, providing simultaneous overvoltage and undervoltage fault outputs. Its 1.0% threshold accuracy over -40C to +125C ensures reliable fault detection in factory automation systems, PLCs, and motor-drive auxiliaries. Compared to two single-channel supervisors, it shares one reference across both OV and UV channels, eliminating tracking errors between the two trip points.
Recomendado
Automotive Battery Voltage Monitoring
The TPS3700DDCR supervises 12 V automotive battery rails by detecting both brownout (UV) and load-dump (OV) events with a single 6-pin device. The wide 1.8 V to 18 V supply tolerates crank-down and jump-start transients, while 5.5 uA typical quiescent current suits always-on key-off monitoring. Both open-drain outputs can be pulled to logic levels or directly wire-ORed to a vehicle ECU without level translation.
Recomendado
FPGA/MCU Multi-Rail Sequencing
In multi-rail FPGA or MCU designs, the TPS3700DDCR monitors core and I/O voltage rails and asserts a fault if any rail drifts out of its window. The two independent open-drain outputs let one TPS3700DDCR replace two single-channel supervisors, saving board area in space-constrained SoMs. With 18 V-tolerant outputs it can be pulled directly to 1.8 V, 3.3 V, or 5 V logic rails from the same VDD supply.
Recomendado
USB Type-C VBUS Monitor
The TPS3700DDCR supervises USB Type-C VBUS (5 V default, up to 20 V in PD) by detecting both undervoltage (disconnected or overloaded) and overvoltage ( faulty PD negotiation) conditions. The 18 V output rating covers 20 V PD EPR profiles with appropriate derating, and 5.5 uA quiescent current keeps total standby current low for bus-powered devices. Two open-drain outputs enable separate signaling to a PD controller and host MCU.
Recomendado
Battery Charger Voltage Window
Battery-powered designs use the TPS3700DDCR to detect end-of-charge (OV threshold) and battery-cutoff (UV threshold) on a single Li-ion or Li-Poly cell stack, replacing two separate supervisors. The 5.5 uA quiescent current adds minimal sleep-mode drain, and the high-accuracy 400 mV reference lets designers set tight charge-termination limits without complex analog circuits.
Recomendado
Server/Hot-Swap Power Rail Monitor
The TPS3700DDCR monitors intermediate bus voltages in 12 V hot-swap and redundant server power systems, providing latched OV/UV faults to the BMC for graceful power-down. Two independent outputs allow direct interface to OR-ing controller and BMC logic without additional glue. The -40C to +125C operating range and 1% threshold accuracy are well matched to data-center ambient envelopes.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TPS3700DDCR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TPS3700DDCT | TPS3700DDCR2 | TPS3702AX18DDCR | TLV6700DDCR | MAX16054 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Package | SOT-23-6 (DDC) | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same |
| Supply Voltage Range | 1.8 V to 18 V | 1.8 V to 18 V | 1.8 V to 18 V | 1.8 V to 18 V | 1.8 V to 6.5 V | 1.8 V to 5.5 V |
| Internal Reference | 400 mV | 400 mV | 400 mV | Fixed 1.8 V threshold | 400 mV | Adjustable |
| Threshold Accuracy | 1.0% over temp (0.25% typ) | 1.0% over temp (0.25% typ) | 1.0% over temp (0.25% typ) | 1.0% over temp | 1.0% over temp | 2.5% over temp |
| Quiescent Current (typ) | 5.5 uA | 5.5 uA | 5.5 uA | 5.5 uA | 5.5 uA | 55 uA |
| Output Type | Open-drain (2x) | Open-drain (2x) | Open-drain (2x) | Open-drain (2x) | Open-drain (2x) | Open-drain (2x) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Reel Quantity | 3000 | 250 | 3000 | 3000 | 3000 | 3000 |
Diferenciadores clave
- Widest supply range in its SOT-23-6 window-detector class (frente a TLV6700DDCR)
- 10x lower quiescent current than MAX16054 (frente a MAX16054)
- Internally-trimmed 400 mV reference enables sub-rail thresholds (frente a TPS3702AX18DDCR)
Notas de diseño
Place a 0.1 uF X7R ceramic decoupling capacitor as close as possible to the VDD pin (pin 6) of the TPS3700DDCR. The wide 1.8 V to 18 V supply range makes the part sensitive to high-frequency transients on long PCB traces - additional bulk capacitance (1 uF to 10 uF) at the supply input is recommended for noisy industrial and automotive environments. The two open-drain outputs (OVH pin 1, OVL pin 3) each require external pull-up resistors tied to the desired logic rail (up to 18 V).
Do not apply voltages outside the 1.8 V to 18 V range on VDD, or above 18 V on the OV/UV sense inputs - damage to the internal comparators may result. When using the TPS3700DDCR as two independent monitors (not a window), verify that both inputs UVIN (pin 4) and OV/UVSET (pin 5) are driven by independent resistor dividers referenced to the same GND (pin 2). Use 1% tolerance or better divider resistors to preserve the 1.0% datasheet accuracy budget.
The SOT-23-THIN (DDC) package is small (2.9 mm x 1.6 mm) and benefits from short, direct traces to GND pin 2 to minimize ground-bounce during fast fault events. Keep the OV/UVSET divider traces away from switching-node traces to prevent false triggering from capacitive coupling; if the layout forces proximity, add a small RC filter (100 kohm + 100 pF) at the sense input to reject high-frequency noise.
Información de cumplimiento
RoHS compliant per TI TPS3700 product page and IC Directory datasheet record. Not AEC-Q100 qualified - choose TPS3700-Q1 (where available) for automotive. MSL2 - 260C - 1 YEAR floor-life classification per internal packaging data.
