SMM764

Preliminary Information

Summit Microelectronics, Inc

2098 1.1 6/29/2005

9

DC OPERATING CHARACTERISTICS (CONTINUED)

(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.)

Symbol

Parameter

Notes

Min

Typ

Max

Unit

Internally regulated to 3.6V

0.8 x

VDD_CAP

V

Input high voltage (MR#, SDA,

SCL, PWR_ON, SEQ_LINK,

FS#)

3

Internally regulated to 5.5V

0.7 x

VDD_CAP

V

Internally regulated to 3.6V

0.2 x

VDD_CAP

V

Input low voltage (MR#, SDA,

SCL, PWR_ON, SEQ_LINK,

FS#)

3

Internally regulated to 5.5V

0.3 x

VDD_CAP

V

Open drain outputs (RST#,

FS#, PWR_ON, HEALTHY,

FAULT#, PUPx, SEQ_LINK)

0

0.4

V

Output low current

specification will be affected

0

1.0

mA

Positive sense voltage

VM pin

+0.3

VDD_CAP

V

Monitor threshold step size

VM, AIN1/AIN2 pins

5

mV

Commercial temp range

-3

+3

Internal temperature sensor

accuracy

Industrial temp range

-5

+5

Temperature threshold step

size

Internal temp sensor

0.25

VREF

Internal 1.25 VREF output

voltage

1.24

1.25

1.26

V

–40

-0.25

+0.25

%

TC

Internal VREF temperature

coefficient

0

-0.15

+0.15

%

VREF ACC Internal VREF accuracy

-0.4

+0.4

%

Ext VREF

External VREF voltage range

0.5

VDD_CAP

V

External VREF=1.25V,

-0.2

0.1

+0.2

%

External VREF=1.25V,

-0.5

0.3

+0.5

%

ADOC (Active DC Output

Control)/margin accuracy

Internal VREF=1.25V, total

-0.5

0.3

+0.5

%

Minimum output valid voltage

VDD_CAP voltage at which

the PUP, RST#, HEALTHY

and FAULT#, FS#, PWR_ON

SEQ_LINK, outputs are valid

1

V

VDD_CAP rising

2.6

V

UVLO

UVLO (Under Voltage Lockout)

threshold

4

VDD_CAP falling

2.5

V

Note 1 – Range depends on internal regulator set to 3.6V or 5.5V see 12VIN specification.

Note 2 – See Application Note 37 which describes the type of capacitors to use to obtain minimum leakage.

Note 3 – All logic levels are derived with respect to the voltage present on VDD_CAP, when supplied from the VDD input VDD_CAP is equal to

VDD, under no load.

Note 4 – (100mV typ Hysteresis)