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Texas Instruments TPS3617-50DGK — Power Management (PMIC / Gate Driver)

TPS3617-50DGK Battery Backup Circuit, Active Low Reset

MPNTPS3617-50DGK
Active

Texas Instruments TPS3617-50DGK battery backup supervisor IC, active-low reset, push-pull output, 4.55 V threshold, 60 ms reset timeout, -40 to 85 °C, 8-VSSOP package.

$2.4807Ref. price · indicative, final on quote
Texas Instruments TPS3617-50DGK datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS3617-50DGK specifications
ParameterValue
TypeBattery Backup Circuit
MountingSurface Mount
Voltage - threshold4.55V
Number of voltages monitored1
Operating temperature-40°C~85°C(TJ)
ResetActive Low
OutputPush-Pull, Totem Pole
PackageTube
Reset timeout60ms Minimum
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)

Product details

4.55 V threshold supervisor for 5 V battery-backed rails

The Texas Instruments TPS3617-50DGK is a battery backup supervisor IC that monitors a single 5 V supply rail and switches to battery when the voltage drops below 4.55 V. It asserts a push-pull active-low reset with a guaranteed minimum timeout of 60 ms, giving the processor time to save state and the oscillator to stabilise before release.

Reset timing and output drive

The reset output is push-pull (totem pole), so no external pull-up resistor is needed. A single voltage is monitored — the 4.55 V threshold is fixed and trimmed for 5 V nominal systems.

Housed in an 8-VSSOP (also listed as 8-TSSOP / 8-MSOP, 3.00 mm width), this is a surface-mount part with a 0.65 mm pitch. The small footprint suits space-constrained designs on 5 V rails where a separate supervisor and battery switchover would take more board area.

Frequently asked questions

What is the reset timeout of TPS3617-50DGK?

The reset timeout is 60 ms minimum, ensuring the processor stays in reset long enough for the supply rail and oscillator to stabilise after a brownout or power-up.

What is the difference between TPS3617-50DGK and TPS3617-33DGK?

The key difference is the voltage threshold: the -50 variant monitors a 4.55 V threshold for 5 V rails, while the -33 variant monitors a lower threshold for 3.3 V rails. Both share the same package, reset timeout, and temperature range.