SMT6822T6E datasheet, PDF - EEWORLD Datasheet

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SMT6822T6E: Description1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, LEAD FREE, SOT-23, 5 PIN; CategoryPower/power management The power supply circuit; File Size315KB，21 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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SMT6822T6E Overview

1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, LEAD FREE, SOT-23, 5 PIN

SMT6822T6E Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	STMicroelectronics
Parts packaging code	SOT-23
package instruction	LSSOP,
Contacts	5
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	RESET THRESHOLD VOLTAGE IS 3.08V; MANUAL RESET INPUT
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code	R-PDSO-G5
JESD-609 code	e3
length	2.9 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	5
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	LSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.45 mm
Maximum supply voltage (Vsup)	3.6 V
Minimum supply voltage (Vsup)	2.7 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	1.6 mm

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STM6321/6322

STM6821/6822/6823/6824/6825

5-Pin Supervisor with

Watchdog Timer and Push-button Reset

PRELIMINARY DATA

FEATURES SUMMARY

■

PRECISION V

MONITORING OF 5V, 3.3V,

3V, OR 2.5V POWER SUPPLIES

– STM6xxxL

– STM6xxxM

– STM6xxxT

– STM6xxxS

– STM6xxxR

– STM6xxxZ

RST OUTPUTS (ACTIVE-LOW, PUSH-PULL

OR OPEN DRAIN)

RST OUTPUTS (ACTIVE-HIGH, PUSH-

PULL)

200ms (TYP) t

rec

WATCHDOG TIMER - 1.6sec (TYP)

MANUAL RESET INPUT (MR)

LOW SUPPLY CURRENT - 3µA (TYP)

GUARANTEED RST (RST) ASSERTION

DOWN TO V

= 1.0V

OPERATING TEMPERATURE:

–40°C to 85°C (Industrial Grade)

Figure 1. Package

SOT23-5 (WY)

Table 1. Device Options

Part Number

STM6321

STM6322

STM6821

STM6822

STM6823

STM6824

STM6825

✔

Watchdog Input

✔

Manual Reset

Input

Reset Output

Active-Low

(Push-pull)

Active-High

(Push-pull)

✔

Active-Low

(Open Drain)

✔

December 2004

1/21

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

STM6321/6322/6821/6822/6823/6824/6825

TABLE OF CONTENTS

FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 1. Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 1. Device Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 2. Logic Diagram (STM6821/6822/6823). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3. Logic Diagram (STM6321/6322/6824/6825) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 2. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 4. STM6821/6822/6823 SOT23-5 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 5. STM6321/6322/6824/6825 SOT23-5 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Active-Low, Push-pull Reset Output (RST) - STM6822/6823/6824/6825 . . . . . . . . . . . . . . . . . . . . . 5

Active-Low, Open Drain Reset Output (RST) - STM6321/6322/6822 . . . . . . . . . . . . . . . . . . . . . . . . 5

Push-button Reset Input (MR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Watchdog Input (WDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Active-High Reset Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 3. Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 6. Block Diagram (STM6xxx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 7. Hardware Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Reset Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Open Drain RST Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 8. STM6321/6322/6822 Open Drain RST Output with Multiple Supplies . . . . . . . . . . . . . . . 7

Push-button Reset Input (STM6322/6821/6822/6823/6825) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Watchdog Input (STM6321/6821/6822/6823/6824) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Watchdog Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ensuring a Valid Reset Output Down to V

= 0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Interfacing to Microprocessors with Bi-directional Reset Pins . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 9. Ensuring RST Valid to V

= 0, (Active-Low Push-pull Outputs) . . . . . . . . . . . . . . . . . . . 8

Figure 10.Ensuring RST Valid to V

= 0, (Active-High, Push-pull Outputs) . . . . . . . . . . . . . . . . . . 8

Figure 11.Interfacing to Microprocessors with Bi-directional Reset I/O . . . . . . . . . . . . . . . . . . . . . . . 8

TYPICAL OPERATING CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 12.V

-to-Reset Output Delay vs. Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 13.Supply Current vs. Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 14.MR-to-Reset Output Delay vs. Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 15.Normalized Power-up t

rec

vs. Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 16.Normalized Reset Threshold Voltage vs. Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 17.Normalized Power-up Watchdog Time-Out Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 18.Voltage Output Low vs. I

SINK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 19.Voltage Output High vs. I

SOURCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2/21

STM6321/6322/6821/6822/6823/6824/6825

Figure 20.Maximum Transient Duration vs. Reset Threshold Overdrive. . . . . . . . . . . . . . . . . . . . . 13

MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 4. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 5. Operating and AC Measurement Conditions . . . . .

Figure 21.AC Testing Input/Output Waveforms. . . . . . . . . . .

Figure 22.MR Timing Waveform . . . . . . . . . . . . . . . . . . . . . .

Figure 23.Watchdog Timing . . . . . . . . . . . . . . . . . . . . . . . . .

Table 6. DC and AC Characteristics . . . . . . . . . . . . . . . . . .

......

.......

......

. . . . 15

. . . . 16

PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 24.SOT23-5 – 5-lead Small Outline Transistor Package Mechanical Drawing . . . . . . . . . . 18

Table 7. SOT23-5 – 5-lead Small Outline Transistor Package Mechanical Data . . . . . . . . . . . . . 18

PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 8. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 9. Marking Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

REVISION HISTORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 10. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3/21

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