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TPS3838L30DBVR +BOM

Active-low, open-drain, nano-power supervisors with manual reset

Manufacturer:

TI
Mfr.Part #:

TPS3838L30DBVR
Datasheet:

TPS3838L30DBVR Datasheet (PDF)
Number Of Supplies Monitored:

1
Threshold Voltage 1 (typ) (V):

1.71, 2.25, 2.64, 2.93
Features:

Manual reset capable, Reset time delay, Undervoltage monitor only
Reset Threshold Accuracy (%):

1.75
EDA/CAD Models:

Request Free CAD Models for TPS3838L30DBVR

TPS3838L30DBVR Information

General Description

The TPS3836, TPS3837, and TPS3838 device families of supervisory circuits provide circuit initialization and timing supervision, primarily for digital signal processors (DSP) and processor-based systems.

During power-on, RESET is asserted when the supply voltage V_DD becomes higher than 1.1 V. Thereafter, the supervisory circuit monitors V_DD and keeps the RESET output active as long as V_DD remains below the threshold voltage of V_IT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time starts after V_DD rises above the threshold voltage V_IT.

When CT is connected to GND, a fixed delay time of typically 10 ms is asserted. When connected to V_DD, the delay time is typically 200 ms. When the supply voltage drops below the threshold voltage V_IT, the output becomes active (low) again. All the devices of this family have a fixed-sense threshold voltage (V_IT) set by an internal voltage divider.

The TPS3836 has an active-low, push-pull RESET output. The TPS3837 has an active-high, push-pull RESET, and the TPS3838 integrates an active-low, open-drain RESET output. The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3.0 V, and 3.3 V. The circuits are available in either a SOT23-5 or a 2-mm × 2-mm SON-6 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a temperature range of –40°C to 85°C.

Key Features

Supply current: 220 nA (typical)
Precision supply voltage supervision range:
1.8 V, 2.5 V, 3.0 V, and 3.3 V
Power-on reset generator with selectable delay time: 10 ms or 200 ms
Push and pull RESET output (TPS3836),
Push and pull RESET output (TPS3837), or open-drain RESET output (TPS3838)
Manual reset
5-pin SOT23 and 2-mm × 2-mm, 6-pin SON packages
Temperature range: –40°C to 85°C

Specifications

Number of supplies monitored	1	Threshold voltage 1 (typ) (V)	1.71, 2.25, 2.64, 2.93
Features	Manual reset capable, Reset time delay, Undervoltage monitor only	Reset threshold accuracy (%)	1.75
Iq (typ) (mA)	0.00022	Output driver type/reset output	Active-low, Open-drain
Time delay (ms)	10, 200	Supply voltage (min) (V)	1.6
Supply voltage (max) (V)	6	Rating	Catalog
Watchdog timer WDI (s)	None	Operating temperature range (°C)	-40 to 85
Package/Case	SOT-23 (DBV)-5