Specifications
| Type | Description |
|---|---|
| Part Number | TPS3809 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package Case | SOT-23 (3), DBV; body size 2.90 mm x 1.60 mm |
| Supply Current | 9 uA typ; General feature, typical |
| Monitored Supply Voltages | 2.5 V, 3 V, 3.3 V, 5 V; Precision supply voltage monitor product spectrum |
| Reset Delay Time | 200 ms typ; Internal timer delay after VDD rises above threshold voltage VIT |
| Operating Temperature Range | -40°C to +85°C; Device characterized operating range |
| Package | 3-pin SOT-23, DBV; Device information |
| Body Size | 2.90 mm x 1.60 mm nominal; SOT-23 (3), DBV package |
| Alternative Device | TLV809E; Same pins, functions, and electrical parameters stated in description |
| TPS3809J25 Threshold Voltage | 2.25 V; Device comparison table |
| TPS3809L30 Threshold Voltage | 2.64 V; Device comparison table |
| TPS3809K33 Threshold Voltage | 2.93 V; Device comparison table |
| TPS3809I50 Threshold Voltage | 4.55 V; Device comparison table |
| TPS3809J25 Marking | PCZI; Device comparison table |
| TPS3809L30 Marking | PDAI; Device comparison table |
| TPS3809K33 Marking | PDBI; Device comparison table |
| TPS3809I50 Marking | PDCI; Device comparison table |
| Truth Table RESET Low | RESET = L; VDD > VIT = 0 |
| Truth Table RESET High | RESET = H; VDD > VIT = 1 |
| GND Pin | Pin 1; Connect to ground with low-impedance connection |
| RESET Pin | Pin 2, output, active low, push-pull; Asserts when VDD is below threshold voltage; deasserts after td when VDD rises above VIT |
| VDD Pin | Pin 3; Supply voltage pin; 0.1-uF ceramic capacitor to ground recommended |
| Absolute Maximum Supply Voltage VDD | 6.5 V; Over operating free-air temperature range |
| Absolute Maximum Voltage, All Other Pins | -0.3 V to 6.5 V; With respect to GND |
| Maximum Low Output Current IOL | 5 mA; Absolute maximum rating |
| Maximum High Output Current IOH | -5 mA; Absolute maximum rating |
| Input Clamp Current IIK | +/-20 mA; VI < 0 or VI > VDD |
| Output Clamp Current IOK | +/-20 mA; VO < 0 or VO > VDD |
| Storage Temperature Range | -65°C to 150°C; Absolute maximum rating |
| Recommended Supply Voltage VDD | 2 V min, 6 V max; Recommended operating conditions |
| RESET Current Sink During Startup | 50 uA; Recommended operating conditions |
| Recommended Operating Free-Air Temperature TA | -40°C min, +85°C max; Recommended operating conditions |
| DBV Power Rating | 437 mW; TA < 25°C |
| DBV Derating Factor | 3.5 mW/°C; Above TA < 25°C |
| DBV Power Rating at 70°C | 280 mW; TA = 70°C |
| DBV Power Rating at 85°C | 227 mW; TA = 85°C |
| High-Level Output Voltage VOH | VDD - 0.2 V min; VDD = 2.5 V to 6 V, IOH = -500 uA |
| High-Level Output Voltage VOH | VDD - 0.4 V min; VDD = 3.3 V, IOH = -2 mA |
| High-Level Output Voltage VOH | VDD - 0.4 V min; VDD = 6 V, IOH = -4 mA |
| Low-Level Output Voltage VOL | 0.3 V max; VDD = 2 V to 6 V, IOL = 500 uA |
| Low-Level Output Voltage VOL | 0.4 V max; VDD = 3.3 V, IOL = 2 mA |
| Low-Level Output Voltage VOL | 0.4 V max; VDD = 6 V, IOL = 4 mA |
| Power-Up Reset Voltage | 0.2 V max; VDD >= 1.1 V, IOL = 50 uA |
| TPS3809J25 Negative-Going Input Threshold Voltage VIT- | 2.2 V min, 2.25 V typ, 2.3 V max; TA = -40°C to 85°C |
| TPS3809L30 Negative-Going Input Threshold Voltage VIT- | 2.58 V min, 2.64 V typ, 2.7 V max; TA = -40°C to 85°C |
| TPS3809K33 Negative-Going Input Threshold Voltage VIT- | 2.87 V min, 2.93 V typ, 2.99 V max; TA = -40°C to 85°C |
| TPS3809I50 Negative-Going Input Threshold Voltage VIT- | 4.45 V min, 4.55 V typ, 4.65 V max; TA = -40°C to 85°C |
| TPS3809J25 Threshold Hysteresis Vhys | 30 mV typ; Electrical characteristics |
| TPS3809L30 Threshold Hysteresis Vhys | 35 mV typ; Electrical characteristics |
| TPS3809K33 Threshold Hysteresis Vhys | 40 mV typ; Electrical characteristics |
| TPS3809I50 Threshold Hysteresis Vhys | 60 mV typ; Electrical characteristics |
| Supply Current IDD | 9 uA typ, 12 uA max; VDD = 2 V, output unconnected |
| Supply Current IDD | 20 uA typ, 25 uA max; VDD = 6 V, output unconnected |
| Input Capacitance Ci | 5 pF typ; VI = 0 V to VDD |
| Pulse Width at VDD tw | 10 us min; VDD = VIT- + 0.2 V to VDD = VIT- - 0.2 V; RL = 1 Mohm, CL = 50 pF, TA = 25°C |
| Delay Time td | 120 ms min, 200 ms typ, 280 ms max; VDD >= VIT- + 0.2 V; see timing diagram; RL = 1 Mohm, CL = 50 pF, TA = 25°C |
| High-to-Low Propagation Delay tPHL | 10 us max; VDD to RESET delay; VIL = VIT- - 0.2 V, VIH = VIT- + 0.2 V; RL = 1 Mohm, CL = 50 pF, TA = 25°C |
| RESET Undefined Region | RESET output behavior undefined below 1.1 V; Timing diagram, VDD < 1.1 V |
| Reference Voltage | 1.137 V; Internal reference voltage shown in detailed block diagram |
| Datasheet Status | request_only |
Product Overview
The TPS3809 is a Texas Instruments Power_Management device classified as a 3-pin supply voltage supervisor. It is offered in the 3-pin SOT-23 DBV package, with a nominal 2.90 mm x 1.60 mm body size. The device family covers monitored supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
The RESET pin is pin 2 and provides an active-low push-pull output. RESET asserts when VDD is below the threshold voltage and deasserts after the internal delay time when VDD rises above VIT. The typical reset delay is 200 ms, with a specified range of 120 ms to 280 ms under the listed timing conditions.
Pin 1 is GND and should use a low-impedance ground connection. Pin 3 is VDD, and the datasheet recommends a 0.1-uF ceramic capacitor from VDD to ground. Recommended operation spans 2 V to 6 V VDD and -40°C to +85°C free-air temperature.
Key Features
- 3-pin supply voltage supervisor in SOT-23 DBV package
- Monitors 2.5 V, 3 V, 3.3 V, and 5 V supplies
- Typical 9 uA supply current as general feature
- Active-low push-pull RESET output on pin 2
- Typical 200 ms internal reset delay after VDD exceeds VIT
- Recommended VDD operating range is 2 V to 6 V
- Operates across -40°C to +85°C free-air temperature
- Four threshold options from 2.25 V to 4.55 V
- RESET behavior is undefined below 1.1 V VDD
- 0.1-uF ceramic capacitor recommended from VDD to ground
Typical Applications
- 2.5 V rail supervision
- 3 V rail supervision
- 3.3 V rail supervision
- 5 V rail supervision
- Power-up reset timing
- Active-low reset generation
- Low-current supply monitoring
- SOT-23 board assemblies
Procurement Notes
When requesting a quote for TPS3809, 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 type of device is the TPS3809?
The TPS3809 is a Texas Instruments 3-pin supply voltage supervisor in the Power_Management category. It monitors fixed supply-voltage thresholds and provides an active-low push-pull RESET output.
Which package is specified for the TPS3809?
The TPS3809 is specified in a 3-pin SOT-23 DBV package. The package body size is listed as 2.90 mm x 1.60 mm nominal.
What reset delay does the TPS3809 provide?
The TPS3809 has an internal reset delay after VDD rises above the threshold voltage VIT. The typical delay is 200 ms, with a specified timing range of 120 ms minimum to 280 ms maximum under the listed conditions.
What supply range is recommended for operation?
The recommended VDD operating range for the TPS3809 is 2 V minimum to 6 V maximum. The recommended free-air operating temperature range is -40°C to +85°C.
How should the TPS3809 pins be connected?
Pin 1 is GND and should use a low-impedance ground connection. Pin 2 is the active-low push-pull RESET output. Pin 3 is VDD, with a 0.1-uF ceramic capacitor to ground recommended.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 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.