TPS3513

PC POWER SUPPLY SUPERVISORS

SLVS313 – FEBRUARY 2001

2

POST OFFICE BOX 655303

description (continued)

UVLO thresholds are 4.45 V (on) and 3.65 V (off). Overcurrent protection (OCP) and overvoltage protection

(OVP) monitor 3.3 V, 5 V, and 12 V. When an OC or OV condition is detected, the power-good output (PGO)

is asserted low and the fault protection output (FPO) is latched high. PSON from low-to-high resets the latch.

The OCP function will be enabled 75 ms after PSON goes low, and a debounce of typically 38 ms. A built-in

2.3-ms delay with 38-ms debounce from PSON to FPO output is enabled at turnoff.

than 1 mA.

The power good feature monitors PGI, 3.3 V and 5 V, and issues a power good signal when the output is ready.

The TPS3513 is characterized for operation from –40

°C to 85°C.

FUNCTION TABLE

PGI

PSON

UV CONDITION

3.3 V / 5 V

OV CONDITIONS

UV CONDITION 12 V

OC CONDITIONS

FPO

PGO

< 0.9 V

L

No

No

No

L

L

< 0.9 V

L

No

No

Yes

L

L

< 0.9 V

L

No

Yes

No

H

L

< 0.9 V

L

No

Yes

Yes

H

L

< 0.9 V

L

Yes

No

No

L

L

< 0.9 V

L

Yes

No

Yes

L

L

< 0.9 V

L

Yes

Yes

No

H

L

< 0.9 V

L

Yes

Yes

Yes

H

L

1.0 V < PGI < 1.1 V

L

No

No

No

L

L

1.0 V < PGI < 1.1 V

L

No

No

Yes

H

L

1.0 V < PGI < 1.1 V

L

No

Yes

No

H

L

1.0 V < PGI < 1.1 V

L

No

Yes

Yes

H

L

1.0 V < PGI < 1.1 V

L

Yes

No

No

H

L

1.0 V < PGI < 1.1 V

L

Yes

No

Yes

H

L

1.0 V < PGI < 1.1 V

L

Yes

Yes

No

H

L

1.0 V < PGI < 1.1 V

L

Yes

Yes

Yes

H

L

>1.2 V

L

No

No

No

L

H

>1.2 V

L

No

No

Yes

H

L

>1.2 V

L

No

Yes

No

H

L

>1.2 V

L

No

Yes

Yes

H

L

>1.2 V

L

Yes

No

No

H

L

>1.2 V

L

Yes

No

Yes

H

L

>1.2 V

L

Yes

Yes

No

H

L

>1.2 V

L

Yes

Yes

Yes

H

L

x

H

x

x

x

H

L

x = don’t care

FPO = L means: fault is not latched

FPO = H means: fault is latched

PGO = L means: fault

PGO = H means: No fault