CATALYST CAT809, CAT810 Service Manual

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Page 1

CAT809, CAT810

3-Pin Microprocessor Power Supply Supervisors

FEATURES

■ Precision monitoring of

+5.0 V (+/- 5%, +/- 10%, +/- 20%), +3.3 V (+/- 5%, +/ 10%), +3.0 V (+/- 10%) and +2.5 V (+/- 5%) power supplies

■ Offered in two output configurations:

- CAT809: Active LOW reset

- CAT810: Active HIGH reset

■ Direct replacements for the MAX809 and

■ Reset valid down to V

■ 6 µA power supply current

■ Power supply transient immunity

■ Compact 3-pin SOT23 and SC70 packages

■ Industrial temperature range: -40˚C to +85˚C

APPLICATIONS

■ Computers

■ Servers

■ Laptops

■ Cable modems

■ Wireless communications

■ Embedded control systems

■ White goods

■ Power meters

■ Intelligent instruments

■ PDAs and handheld equipment

MAX810 in applications operating over the industrial temperature range

= 1.0 V

DESCRIPTION

The CAT809 and CAT810 are µP supervisory circuits that monitor power supplies in digital systems. The CAT809 and CAT810 are direct replacements for the MAX809 and MAX810 in applications operating over the industrial temperature range.

These devices generate a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. The underlying floating gate technology, AE makes it possible to offer any custom reset threshold value. Seven industry standard threshold levels are

2(TM)

used by Catalyst Semiconductor,

THRESHOLD SUFFIX SELECTOR

Nominal Threshold Threshold Suffix

Voltage Designation

4.63V L

4.38V M

4.00V J

3.08V T

2.93V S

2.63V R

2.32V Z

offered to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems.

The CAT809 features a RESET push-pull output (active LOW) and the CAT810 features a RESET push-pull output (active HIGH).

Fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at V levels as low as 1.0 V.

The CAT809/810 are fully specified over the industrial temperature range (-40˚C to 85˚C) and are available in compact 3-pin SOT23 and SC70 packages.

PIN CONFIGURATION

GND

RESET

(RESET)

CAT809

(CAT810)

3-Lead SOT23

3-Lead SC70

Doc. No. 3004, Rev. S

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CAT809, CAT810

ORDERING INFORMATION

rebmuNtraPgniredrOytiraloPTESERegakcaPleeRrepstraP

T-RUE_908TAClluP-hsuP TESER 32TOS,nip-3k3

01T-RUE_908TAClluP-hsuP TESER 32TOS,nip-3k01

T-IBT_908TAClluP-hsuP TESER neerG32TOS,nip-3k3

01T-IBT_908TAClluP-hsuP TESER neerG32TOS,nip-3k01

T-RXE_908TAClluP-hsuP TESER 07CS,nip-3k3

01T-RXE_908TAClluP-hsuP TESER 07CS,nip-3k01

T-IDS_908TAClluP-hsuP TESER neerG07CS,nip-3k3

01T-IDS_908TAClluP-hsuP TESER neerG07CS,nip-3k01

T-RUE_018TACTESERlluP-hsuP32TOS,nip-3k3

01T-RUE_018TACTESERlluP-hsuP32TOS,nip-3k01

T-IBT_018TAC

01T-IBT_018TAC

_018TACRXET-lluP-hsuPTESER

_018TACRXE01T-lluP-hsuPTESER

T-IDS_018TAC

01T-IDS_018TAC

Insert threshold suffix (L, M, J, T, S, R or Z) into the blank position. Example: CAT809LTBI-T for 4.63 V.

lluP-hsuPTESER lluP-hsuPTESER

TOP MARKING

32TOSneerG32TOS07CSneerG07CS

L908TACMYAAMYBD_AF_AG

M908TACMYBAMYCD_BF_BG

J908TACMYWCMYAD_GF_GG

T908TACMYCAMYFD_EF_EG S908TACMYDAMYED_DF_DG R908TACMYFAMYDD_CF_CG

Z908TACMYFCMYGD_FF_FG

neerG32TOS,nip-3k3

neerG32TOS,nip-3k01 07CS,nip-3k3 07CS,nip-3k01

neerG07CS,nip-3k3 neerG07CS,nip-3k01

L018TACMYGAMYKC_HF_HG

M018TACMYHAMYLC_JF_JG

J018TACMYIAMYJC_PF_PG

T018TACMYJAMYPC_MF_MG S018TACMYKAMYNC_LF_LG R018TACMYLAMYMC_KF_KG

Z018TACMYGCMYRC_NF_NG

Where YM stands for Year and Month for the SOT23 package and the blank is replaced by the assembly location for the SC70 package.

Doc. No. 3004, Rev. S Patent Pending

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PIN DESCRIPTIONS

CAT809, CAT810

Pin Number

Name Description

CAT809 CAT810

1 1 GND Ground 2—RESET Active LOW reset. RESET is asserted if V

falls below the reset threshold

and remains low for at least 140ms after VCC rises above the reset threshold.

— 2 RESET Active HIGH reset. RESET is asserted if VCC falls below the reset

threshold and remains high for at least 140ms after VCC rises above the reset threshold.

33VCCPower supply voltage that is monitored.

Patent Pending Doc. No. 3004, Rev. S

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CAT809, CAT810

ABSOLUTE MAXIMUM RATINGS*

Any pin with respect to ground .......... -0.3 V to +6.0 V

Input Current, VCC............................................. 20 mA

Output Current, RESET, RESET ...................... 20 mA

Rate of Rise, V

.............................................................

Continuous Power Dissipation

Derate 2.2mW/˚C above 70˚C (SC70)......... 175 mW

Derate 4mW/˚C above 70˚C (SOT23) ......... 320 mW

100 V/µs

Operating Temperature Range........... -40°C to +85°C

Storage Temperature Range............ -65°C to +105°C

Lead Soldering Temperature (10 sec).............. 300°C

*COMMENT

Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.

ELECTRICAL CHARACTERISTICS

= Full range, TA = -40°C to +85°C unless otherwise noted. Typical values at TA = +25˚C and V

L/M/J versions, V

Parameter Symbol Conditions Min Typ Max Units

VCC Range TA = 0˚C to +70˚C 1.0 5.5

Supply Current I

Reset

Threshold

Voltage

= 3.3 V for the T/S versions, V

TA = -40˚C to +85˚C 1.2 5.5

TA = -40˚C to +85˚C

L Threshold

M Threshold

J Threshold

T Threshold

S Threshold

R Threshold

Z Threshold

= 3 V for the R version and V

VCC < 5.5 V, J/L/M 8 20 VCC < 3.6 V, R/S/T/Z 6 15 TA = +25˚C 4.56 4.63 4.70 TA = -40˚C to +85˚C 4.50 4.75 TA = +25˚C 4.31 4.38 4.45 TA = -40˚C to +85˚C 4.25 4.50 TA = +25˚C 3.93 4.00 4.06 TA = -40˚C to +85˚C 3.89 4.10 TA = +25˚C 3.04 3.08 3.11 TA = -40˚C to +85˚C 3.00 3.15 TA = +25˚C 2.89 2.93 2.96 TA = -40˚C to +85˚C 2.85 3.00 TA = +25˚C 2.59 2.63 2.66 TA = -40˚C to +85˚C 2.55 2.70 TA = +25˚C 2.28 2.32 2.35 TA = -40˚C to +85˚C 2.25 2.38

= 2.5 V for the Z version.

= 5 V for the

µA

Doc. No. 3004, Rev. S Patent Pending

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CAT809, CAT810

ELECTRICAL CHARACTERISTICS

= Full range, TA = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C and V

L/M/J versions, V

= 3.3 V for T/S versions, V

Parameter Symbol Conditions Min Typ

(continued)

= 3 V for R version and V

= 2.5 V for Z version.

(1)

Max Units

= 5 V for

Reset Threshold Tempco 30 ppm/˚C VCC to Reset Delay (Note 2) VCC = VTH to (VTH - 100 mV) 20 µs Reset Active Timeout Period TA = -40˚C to +85˚C 140 240 400 ms

RESET Output Voltage Low (Push-pull, active LOW, CAT809)

RESET Output Voltage High (Push-pull, active LOW, CAT809)

RESET Output Voltage Low (Push-pull, active HIGH, CAT810)

VCC = VTH min, I

CAT809R/S/T/Z

VCC = VTH min, I

CAT809J/L/M

VCC > 1.0 V, I

VCC = VTH max, I

CAT809R/S/T/Z

CAT809J/L/M

VCC > VTH max, I

CAT810R/S/T/Z

VCC > VTH max, I

= 1.2 mA

SINK

= 3.2 mA

SINK

= 50 µA 0.3

SINK

= 500 µA

SOURCE

= 800 µA

0.8 V

VCC - 1.5

= 1.2 mA

SINK

= 3.2 mA

SINK

0.3

0.4

0.3

0.4

CAT810J/L/M

RESET Output Voltage High (Push-pull active HIGH,

1.8 V < VCC ≤ VTH min, I

= 150 µA 0.8 V

SOURCE

CAT810)

Note 1: Production testing done at TA = +25˚C; limits over temperature guaranteed by design only. Note 2: RESET output for the CAT809; RESET output for the CAT810

Patent Pending Doc. No. 3004, Rev. S

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CAT809, CAT810

TYPICAL OPERATING CHARACTERISTICS

= Full range, TA = -40˚C to +85˚C unless otherwise noted. Typical values at TA = +25˚C and V

L/M/J versions, V

=3.3 V for T/S versions, VCC = 3 V for R version and VCC = 2.5 V for Z version.

= 5 V for

POWER-UP RESET TIMEOUT

VS. TEMPERATURE

260

240

220

200

180

POWER-UP RESET TIMEOUT (mS)

160

-50 0 50 100 150

VCC=5V

VCC=2.5V

TEMPERATURE (˚C)

POWER-DOWN RESET DELAY VS. TEMPERATURE

14 12 10

8 6 4 2 0

POWER-DOWN RESET DELAY (µS)

-50 0 50 100 150

(CAT8xxR/S/T/Z)

TEMPERATURE (˚C)

SUPPLY CURRENT VS. TEMPERATURE

(NO LOAD, CAT8xxR/S/T/Z)

12 10

8 6 4

SUPPLY CURRENT (µA)

2 0

-50 0 50 100 150

VCC=5.5V

TEMPERATURE (˚C)

NORMALIZED RESET THRESHOLD

VS. TEMPERATURE

1.0002 1

0.9998

0.9996

0.9994

0.9992

0.999

NORMALIZED THRESHOLD

0.9988

0 20 40 60 80 100 120

TEMPERATURE (˚C)

VCC=3.6V

Doc. No. 3004, Rev. S Patent Pending

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CAT809, CAT810

DETAILED DESCRIPTIONS

RESET TIMING

The reset signal is asserted LOW for the CAT809 and HIGH for the CAT810 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 140ms after the power supply voltage has risen above the threshold.

Threshold

Power

Supply

Voltage

RESET

5V 0V

Voltage

Reset Timeout Period

140ms

minimum

CAT809

RESET

5V 0V

CAT810

FIGURE 1. RESET TIMING DIAGRAM

VCC TRANSIENT RESPONSE

The CAT809/810 protect µPs against brownout failure. Short duration transients of 4µsec or less and 100 mV amplitude typically do not cause a false RESET.

Figure 2 shows the maximum pulse duration of negative-going VCC transients that do not cause a reset condition. As the amplitude of the transient goes further below the threshold (increasing VTH - VCC), the maximum pulse duration decreases. In this test, the VCC starts from an initial voltage of 0.5V above the threshold and drops below it by the amplitude of the overdrive voltage (VTH - VCC).

= 25°C

25 20

AMB

15 10

TRANSIENT DURATION [µs)

CAT809M

1 10 100 1000

RESET OVERDRIVE VTH - VCC [mV]

CAT809Z

FIGURE 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive

Patent Pending Doc. No. 3004, Rev. S

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CAT809, CAT810

VALID RESET WITH VCC UNDER 1.0 V

To ensure that the CAT809 RESET pin is in a known state when V between RESET pin and GND is recommended; the value is not critical. For the CAT810, a pull-up resistor from RESET pin to VCC is needed.

is under 1.0 V, a 100 kΩ pull-down resistor

Power Supply

FIGURE 3.

CAT809

RESET

GND

RESETRESET

RESET Valid with VCC Under 1.0 V

RESETRESET

100kΩ

Power Supply

CAT810

RESET

GND

FIGURE 4. RESET Valid with VCC Under 1.1 V

100kΩ

BI-DIRECTIONAL RESET PIN INTERFACING

The CAT809/810 can interface with µP/µC bi-directional reset pins by connecting a 4.7 kΩ resistor in series with the CAT809/810 reset output and the µP/µC bi-directional reset pin.

Power Supply

BUF

CAT809

4.7kΩ

RESET

INPUT

GND

Bi-directional I/O Pin

FIGURE 5. Bi-directional Reset Pin Interfacing

µP

GND

Buffered

RESET

(For example: 68HC11)

Doc. No. 3004, Rev. S Patent Pending

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CAT809, CAT810

OTHER SUPERVISORY PRODUCTS Function CAT1161/3 CAT1162 CAT809 CAT810 CAT811 CAT812

With 16k Bit Serial EEPROM Memory Watchdog Timer Manual Reset Input Active Low Reset Active High Reset Dual Polarity Reset Outputs Package 8-pin 8-pin 3-pin 3-pin 4-pin 4-pin

DIP and SOIC DIP and SOIC SOT23 and SOT23 and SOT143 SOT143

SC70 SC70

Patent Pending Doc. No. 3004, Rev. S

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CAT809, CAT810

PACKAGE INFORMATION Plastic SOT-23 (3-Pin)

Inches Millimeters

Min Max Min Max

Plastic SOT-23 (3-Pin)

A 0.0350 0.0441 0.89 1.12 A1 0.0005 0.0039 0.013 0.10 B 0.0146 0.0197 0.37 0.50 c 0.0033 0.0071 0.085 0.18 D 0.1102 0.1197 2.80 3.04 E 0.0472 0.0551 1.20 1.40 e 0.0350 0.0406 0.89 1.03

e1 0.0701 0.0807 1.78 2.05 H 0.0827 0.1039 2.10 2.64 ∝ 0° 8° 0° 8° L 0.0083 0.0161 0.275 0.41

L1 0.0160 0.0270 0.275 0.685

NOTE:

1. THIS PART IS COMPLIANT WITH JEDEC SPECIFICATION TO-236AB

2. DIE IS FACE UP FOR MOLD AND TRIM/FORM

3. DIMENSIONS ARE EXCLUSIVE OF MOLD

FLASH AND METAL BURR

∝

Doc. No. 3004, Rev. S Patent Pending

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CAT809, CAT810

PACKAGE INFORMATION SC-70 Package (3-Lead)

Inches Millimeters

Min Max Min Max

Plastic SC-70 (3-Pin)

A 0.0315 0.0433 0.80 1.10 A1 0.0000 0.0039 0.00 0.10 A2 0.0315 0.0394 0.80 1.00 b 0.0059 0.00118 0.15 0.30 c 0.0035 0.0071 0.09 0.18 D 0.0709 0.0866 1.80 2.20 E 0.0453 0.0531 1.15 1.35 E1 0.0709 0.0945 1.80 2.40 e 0.00255 BSC 0.65BSC L 0.0102 0.0181 0.26 0.46 L1 0.0108 0.0226 0.275 0.575

NOTE:

1. THIS PART IS COMPLIANT WITH EIAJ SPECIFICATION SC-70

2. DIE IS FACE UP FOR MOLD. DIE IS FACING DOWN FOR TRIM/FORM

3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR

A2 A

L1 L

Patent Pending Doc. No. 3004, Rev. S

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CAT809, CAT810

REVISION HISTORY

Date Rev. Reason

10/29/2003 N Updated VCC Transient Response text and Figure 2 10/30/2003 O Updated Power Up Reset Timeout vs. Temperature curve

3/10/2004 P Corrected temperature range

Updated Description Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics

03/23/2004 Q Updated Description

Updated Ordering Information Updated Absolute Maximum Ratings Updated Electrical Characteristics Updated Typical Operating Characteristics Updated Package Information

3/25/2004 R Changed Preliminary designation to Final

Updated Max Reset Active Timout Period in Electrical Characteristics Updated package drawings

5/10/2004 S Updated top marking table

Doc. No. 3004, Rev. S Patent Pending

Page 13

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Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ AE2 ™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. For a complete list of patents

issued to Catalyst Semiconductor contact the Company’s corporate office at 408.542.1000.

CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.

Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur.

Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale.

Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete.

Catalyst Semiconductor, Inc. Corporate Headquarters 1250 Borregas Avenue Sunnyvale, CA 94089 Phone: 408.542.1000 Fax: 408.542.1200 www.catalyst-semiconductor.com

Publication #: 3004 Revison: S Issue date: 5/10/04

Patent Pending