Specifications
| Type | Description |
|---|---|
| Part Number | TPS3808 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package Case | SOT-23 (6) 2.90 mm x 1.60 mm; WSON (6) 2.00 mm x 2.00 mm |
| Component Type | Power_IC |
| Function | Low-quiescent-current supervisory circuit with programmable reset delay; monitors SENSE voltage and manual reset input |
| Monitored Voltage Range | 0.4 V to 5 V; system voltage monitored by SENSE input |
| Reset Output Type | Open-drain RESET output; asserted when SENSE falls below threshold or MR is logic low |
| Programmable Reset Delay Range | 1.25 ms to 10 s; external capacitor connected to CT pin |
| Fixed Reset Delay | 20 ms; CT pin disconnected/open |
| Fixed Reset Delay | 300 ms; CT pin connected to VDD using a resistor |
| Typical Quiescent Current | 2.4 uA; VDD = 3.3 V, RESET not asserted, MR/RESET/CT open |
| Maximum Supply Current | 5 uA; VDD = 3.3 V, RESET not asserted, MR/RESET/CT open |
| Typical Supply Current | 2.7 uA; VDD = 6.5 V, RESET not asserted, MR/RESET/CT open |
| Maximum Supply Current | 6 uA; VDD = 6.5 V, RESET not asserted, MR/RESET/CT open |
| Recommended Input Supply Range | 1.7 V to 6.5 V; operating free-air temperature range |
| Electrical Characteristics Input Supply Range | 1.7 V to 6.5 V; -40°C < TJ < 125°C |
| Electrical Characteristics Input Supply Range | 1.65 V to 6.5 V; 0°C < TJ < 85°C |
| Recommended SENSE Pin Voltage | 0 V to 6.5 V; operating free-air temperature range |
| Recommended MR Pin Voltage | 0 V to 6.5 V; operating free-air temperature range |
| Recommended RESET Pin Voltage | 0 V to 6.5 V; operating free-air temperature range |
| Recommended RESET Pin Current | 0.0003 mA to 5 mA; operating free-air temperature range |
| Low-Level Output Voltage | 0.3 V max; 1.3 V <= VDD < 1.8 V, IOL = 0.4 mA |
| Low-Level Output Voltage | 0.4 V max; 1.8 V <= VDD <= 6.5 V, IOL = 1 mA |
| Power-Up Reset Voltage | 0.8 V; VOL max = 0.2 V, IRESET = 15 uA |
| Threshold Accuracy | -1.5% min, +/-0.5% typ, 1.5% max; VIT <= 3.3 V |
| Threshold Accuracy | -2% min, +/-1% typ, 2% max; 3.3 V < VIT <= 5.0 V |
| Threshold Accuracy | -2% min, +/-1% typ, 2% max; TPS3808G01 adjustable version |
| Hysteresis on Threshold Voltage | 1.5% typ, 3% max; TPS3808G01 adjustable version |
| Hysteresis on Threshold Voltage | 1% typ, 2.5% max; fixed threshold versions |
| MR Internal Pullup Resistance | 70 kOhm min, 90 kOhm typ; MR pin internally tied to VDD |
| SENSE Input Current | -25 nA min, 25 nA max; TPS3808G01, VSENSE = VIT |
| SENSE Input Current | 1.7 uA; fixed versions, VSENSE = 6.5 V |
| RESET Leakage Current | 300 nA; VRESET = 6.5 V, RESET not asserted |
| Input Capacitance | 5 pF; CT pin, VIN = 0 V to VDD |
| Input Capacitance | 5 pF; other pins, VIN = 0 V to 6.5 V |
| MR Logic Low Input | 0 V min, 0.3 x VDD max; MR input |
| MR Logic High Input | 0.7 x VDD min, VDD max; MR input |
| SENSE Input Pulse Width | 20 us; VIH = 1.05 x VIT, VIL = 0.95 x VIT |
| MR Input Pulse Width | 0.001 us; VIH = 0.7 x VDD, VIL = 0.3 x VDD |
| RESET Delay Time | 12 ms min, 20 ms typ, 28 ms max; CT open |
| RESET Delay Time | 180 ms min, 300 ms typ, 420 ms max; CT = VDD |
| RESET Delay Time | 0.75 ms min, 1.25 ms typ, 1.75 ms max; CT = 100 pF |
| RESET Delay Time | 0.7 s min, 1.2 s typ, 1.7 s max; CT = 180 nF |
| Propagation Delay MR to RESET | 150 ns; VIH = 0.7 x VDD, VIL = 0.3 x VDD |
| SENSE to RESET High-to-Low Delay | 20 us; VIH = 1.05 x VIT, VIL = 0.95 x VIT |
| Operating Junction Temperature | -40°C to 125°C; specified operating range |
| Absolute Maximum VDD | -0.3 V to 7 V; over operating junction temperature range |
| Absolute Maximum CT Voltage | -0.3 V to VDD + 0.3 V; over operating junction temperature range |
| Absolute Maximum RESET/MR/SENSE Voltage | -0.3 V to 7 V; over operating junction temperature range |
| RESET Pin Current Absolute Maximum | -5 mA to 5 mA; over operating junction temperature range |
| Storage Temperature | -65°C to 150°C; absolute maximum rating |
| HBM ESD Rating | +/-2000 V; all pins, ANSI/ESDA/JEDEC JS-001 |
| CDM ESD Rating | +/-500 V; all pins, JEDEC JESD22-C101 |
| TPS3808G01 Threshold Voltage | 0.405 V; adjustable nominal supply voltage option |
| TPS3808G09 Threshold Voltage | 0.84 V; 0.9 V nominal supply voltage option |
| TPS3808G12 Threshold Voltage | 1.12 V; 1.2 V nominal supply voltage option |
| TPS3808G33 Threshold Voltage | 3.07 V; 3.3 V nominal supply voltage option |
| TPS3808G50 Threshold Voltage | 4.65 V; 5 V nominal supply voltage option |
| Datasheet Status | request_only |
Product Overview
The TPS3808 is a Texas Instruments low-quiescent-current supervisory circuit for Power_Management designs that need monitored reset behavior. It monitors the SENSE voltage and a manual reset input, then drives an open-drain RESET output when SENSE is below threshold or MR is logic low.
The monitored voltage range is 0.4 V to 5 V, with recommended VDD operation from 1.7 V to 6.5 V. Reset delay can be programmed from 1.25 ms to 10 s using an external capacitor on CT. With CT open, the typical fixed delay is 20 ms; with CT connected to VDD using a resistor, the typical fixed delay is 300 ms.
Package options include SOT-23 (6) at 2.90 mm x 1.60 mm and WSON (6) at 2.00 mm x 2.00 mm. The specified operating junction temperature range is -40°C to 125°C, supporting designs that require threshold accuracy, SENSE monitoring, MR input control, and controlled RESET timing.
Key Features
- Low-quiescent-current supervisor with programmable reset delay
- Monitors 0.4 V to 5 V SENSE voltage
- Open-drain RESET asserts from SENSE or MR conditions
- Programmable reset delay from 1.25 ms to 10 s
- Fixed 20 ms reset delay with CT open
- Fixed 300 ms delay with CT connected to VDD
- Recommended VDD operating range is 1.7 V to 6.5 V
- Typical 2.4 uA quiescent current at 3.3 V
- Specified junction range is -40°C to 125°C
- SOT-23 and WSON six-pin package options
Typical Applications
- System voltage monitoring
- Power-on reset timing
- Manual reset input supervision
- Open-drain reset output control
- Adjustable threshold supervision
- Fixed-threshold supply monitoring
- Programmable reset delay circuits
Procurement Notes
When requesting a quote for TPS3808, 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 function does the TPS3808 provide in a power system?
The TPS3808 is a low-quiescent-current supervisory circuit with programmable reset delay. It monitors the SENSE voltage and manual reset input, then asserts the open-drain RESET output when SENSE is below threshold or MR is logic low.
How is the TPS3808 reset delay configured?
The reset delay is programmable from 1.25 ms to 10 s using an external capacitor on the CT pin. With CT open, the typical delay is 20 ms; with CT connected to VDD using a resistor, the typical delay is 300 ms.
What voltage ranges are specified for TPS3808 operation?
The recommended input supply range is 1.7 V to 6.5 V over the operating free-air temperature range. The SENSE input monitors system voltage from 0.4 V to 5 V, while recommended SENSE, MR, and RESET pin voltages are 0 V to 6.5 V.
Which package options are listed for the TPS3808?
The listed package options are SOT-23 (6) with 2.90 mm x 1.60 mm dimensions and WSON (6) with 2.00 mm x 2.00 mm dimensions.
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.