Specifications
| Type | Description |
|---|---|
| Part Number | TPS3823 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 5-pin SOT-23 (DBV), 2.90 mm x 1.60 mm nominal body size including pins |
| Power-on reset delay time | 200 ms; TPS3823, TPS3824, TPS3825, TPS3828 |
| Manual reset input | Available; TPS3820, TPS3823, TPS3825, TPS3828 |
| Reset output type | Active-low push-pull RESET; TPS3823 device comparison table |
| Watchdog timer | Available; TPS3823 device comparison table |
| Supply voltage supervision range | 2.5 V, 3 V, 3.3 V, 5 V; fixed sense threshold options for TPS382x family |
| Watchdog timeout option | 1.6 s; TPS3823, TPS3824, TPS3828 |
| Typical supply current | 15 uA; WDI, MR and outputs unconnected |
| Operating free-air temperature | -40 to 85 °C; TPS3823 standard operating range |
| Operating free-air temperature | -40 to 125 °C; TPS3823A-33 only |
| Supply voltage recommended operating range | 1.1 to 5.5 V; recommended operating conditions, VDD |
| Absolute maximum supply voltage | -0.3 to 6 V; VDD, over operating free-air temperature range |
| Absolute maximum input/output voltage | -0.3 to VDD + 0.3 V; RESET, RESET, MR, WDI pins |
| Maximum low output current | -5 to 5 mA; IOL absolute maximum rating |
| Maximum high output current | -5 to 5 mA; IOH absolute maximum rating |
| Output clamp current range | -10 to 10 mA; IOK, VO < 0 or VO > VDD |
| Storage temperature range | -65 to 150 °C; Tstg absolute maximum rating |
| ESD rating HBM | ±2000 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD rating CDM | ±500 V; charged-device model per JEDEC JESD22-C101 |
| High-level input voltage | 0.7 x VDD min; MR and WDI inputs |
| Low-level input voltage | 0.3 x VDD max; MR and WDI inputs |
| Input transition rise/fall rate | 100 ns/V; MR or WDI input transition |
| Junction-to-ambient thermal resistance | 185 °C/W; DBV SOT-23, 5 pins |
| Junction-to-case top thermal resistance | 83.3 °C/W; DBV SOT-23, 5 pins |
| Junction-to-board thermal resistance | 52.4 °C/W; DBV SOT-23, 5 pins |
| Junction-to-top characterization parameter | 20.4 °C/W; DBV SOT-23, 5 pins |
| Junction-to-board characterization parameter | 52.0 °C/W; DBV SOT-23, 5 pins |
| RESET high-level output voltage | 0.8 x VDD min; TPS382x-33, VDD = VIT- + 0.2 V, IOH = -30 uA |
| RESET low-level output voltage | 0.4 V max; TPS382x-33, VDD = VIT- - 0.2 V, IOL = 1.2 mA |
| Power-up reset voltage | 0.9 V max; VOL(max) = 0.4 V, IOL sink = 20 uA, tr VDD >= 15 us/V |
| Negative-going input threshold voltage | 2.88 V min, 2.93 V typ, 3.00 V max; TPS382x-33, TA = 0 to 85 °C |
| Negative-going input threshold voltage | 2.86 V min, 2.93 V typ, 3.00 V max; TPS382x-33, TA = -40 to 85 °C |
| VDD input hysteresis | 30 mV typ; TPS382x-33 |
| Average high-level input current | 120 uA; WDI = VDD, time average, DC = 88% |
| Average low-level input current | -15 uA; WDI = 0.3 V, VDD = 5.5 V, time average, DC = 12% |
| WDI high-level input current | 140 uA typ, 190 uA max; WDI = VDD |
| MR high-level input current | -40 uA typ, -60 uA max; MR = 0.7 x VDD, VDD = 5.5 V |
| WDI low-level input current | 140 uA typ, 190 uA max; WDI = 0.3 V, VDD = 5.5 V |
| MR low-level input current | -110 uA typ, -160 uA max; MR = 0.3 V, VDD = 5.5 V |
| RESET output short-circuit current | -400 uA typ; TPS382x-33, VDD = VIT-,max + 0.2 V, VO = 0 V |
| Supply current | 15 uA typ, 25 uA max; WDI, MR and outputs unconnected |
| MR internal pullup resistor | 90 kOhm typ; manual reset input |
| Input capacitance | 5 pF typ; MR and WDI, VI = 0 V to 5.5 V |
| TPS3823A-33 RESET high-level output voltage | 0.8 x VDD min; VDD = VIT- + 0.2 V, IOH = -30 uA, TA = -40 to 125 °C |
| TPS3823A-33 RESET low-level output voltage | 0.45 V max; VDD = VIT- - 0.2 V, IOL = 1.2 mA, TA = -40 to 125 °C |
| TPS3823A-33 negative-going input threshold voltage | 2.83 V min, 2.93 V typ, 3.00 V max; TA = -40 to 125 °C |
| Pin 1 function | RESET active-low reset output; TPS3823 DBV package top view |
| Pin 2 function | GND ground connection; TPS3823 DBV package top view |
| Pin 3 function | MR manual-reset input; pull low to force reset; leave unconnected or connect to VDD when unused |
| Pin 4 function | WDI watchdog timer input; reset triggered if WDI remains high or low longer than timeout period |
| Pin 5 function | VDD supply and monitored voltage input; TPS3823 DBV package top view |
| Datasheet Status | request_only |
Product Overview
The TPS3823 is a Texas Instruments Power_Management IC used as a voltage monitor with watchdog timer. In the TPS3823 device comparison, it provides an active-low push-pull RESET output and includes a watchdog timer. The TPS382x family supports fixed sense threshold options for 2.5 V, 3 V, 3.3 V, and 5 V supply supervision.
Key Features
- Voltage monitor with watchdog timer function
- Active-low push-pull RESET output
- Manual reset input available on TPS3823
- 200 ms power-on reset delay time
- 1.6 s watchdog timeout option
- 2.5 V, 3 V, 3.3 V, 5 V supervision options
- 1.1 V to 5.5 V recommended VDD range
- 15 uA typical supply current
- 5-pin SOT-23 DBV package
- MR internal pullup resistor is 90 kOhm typical
- WDI reset triggers after timeout when static
Typical Applications
- Supply voltage supervision
- Watchdog-supervised controller reset
- Manual reset input circuits
- 3.3 V rail monitoring
- 5 V rail monitoring
- Compact SOT-23 power assemblies
- Systems needing 200 ms reset delay
Procurement Notes
When requesting a quote for TPS3823, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What reset output does the TPS3823 provide?
The TPS3823 provides an active-low push-pull RESET output. Pin 1 is the RESET active-low reset output, and the listed TPS382x-33 output levels include 0.8 x VDD minimum high level and 0.4 V maximum low level under specified conditions.
Does the TPS3823 include watchdog and manual reset inputs?
Yes. The TPS3823 device comparison lists a watchdog timer, and the manual reset input is available for TPS3823. Pin 3 is MR, which can be pulled low to force reset, while Pin 4 is WDI, the watchdog timer input.
What supply range is recommended for TPS3823 operation?
The recommended operating range for VDD is 1.1 V to 5.5 V. The TPS382x family also lists fixed sense threshold options for 2.5 V, 3 V, 3.3 V, and 5 V supply supervision.
What package and pin functions are listed for TPS3823?
TPS3823 is listed in a 5-pin SOT-23 DBV package with 2.90 mm x 1.60 mm nominal body size including pins. The pins are RESET, GND, MR, WDI, and VDD supply and monitored voltage input.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.