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STM6904PWEDS6F

Quad, ultralow voltage supervisor with push-button reset

Manufacturer:

STMicroelectronics, Inc
Mfr.Part #:

STM6904PWEDS6F
Datasheet:

STM6904PWEDS6F Datasheet (PDF)
Programmable:

Not Verified
Type:

Multi-Voltage Supervisor
Number of Voltages Monitored:

4
Voltage - Threshold:

1.683V, 2.866V, Adj, Adj
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STM6904PWEDS6F General Description

The STM6904 supervisor is a low voltage/low supply current processor supervisor, designed to monitor up to four system power supply voltages. This device is targeted at applications such as “Set-Top Boxes” (STBs), portable, battery-powered systems, networking and communication systems.The device supports a push-button type manual reset input (MR). Two of the four supply monitors (VCCand V2IN) have fixed (customer-selectable, factory-trimmed) thresholds (VRST1and VRST2). The other two voltage monitor inputs (V3IN and V4IN) are monitored using externally adjustable threshold (0.600 V internal reference) to meet specific level requirements.If any of the four monitored voltages drops below its factory-trimmed or adjustable thresholds, or if theMRis asserted to logic low, the reset outputRSTis asserted (driven low). Once asserted, RST is maintained low for a minimum delay period (tREC) after ALL monitored supplies rise above their respective thresholds and MR returns to high. This device is in the correct reset output logic state when VCCgreater than 0.8 V.The STM6904 is available in a standard 8-lead MSOP (TSSOP) package.

Key Features

Quad voltage monitoring
Accurate ±1.8% across temperature voltage threshold (±1% at 25 °C)
Primary supply (V_CC) monitor. Fixed (factory -programmed) reset thresholds: 3.078 to 2.188 V
Second fixed (V2IN) monitor. Fixed (factory-programmed) reset thresholds: 2.333 to 1.110 V
Two additional adjustable supply monitor inputs (externally adjustable)
0.6 V internal reference
RSToutput (open drain)
Output guaranteed for V_CC≥ 0.8 V
Reset delay time (t_REC) pin selectable
Manual reset input (MR)
Low supply current of 12 μA (typ)
Power supply voltage 0.8 to 5.5 V
RoHS compliant (green package)
8-pin MSOP/TSSOP
Operating temperature: –40 to 85 °C (industrial grade)

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Supervisors	Series	-
Programmable	Not Verified	Type	Multi-Voltage Supervisor
Number of Voltages Monitored	4	Voltage - Threshold	1.683V, 2.866V, Adj, Adj
Output	Open Drain or Open Collector	Reset	Active Low
Reset Timeout	140ms Minimum	Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Base Product Number	STM6904