SC508/SC508A

6

Electrical Characteristics (continued)

Parameter

Conditions

Min

Typ

Max

Units

High-Side Driver (DH, BST, LX)

Peak Current

VDDP = 5V, DH pin sourcing or sinking

2

A

On Resistance

R

3.0

6.0

Ω

R

1.0

2.0

Ω

R

0.6

1.2

Ω

Rise Time

C

22

ns

Fall Time

C

12

ns

Propagation Delay

From FB Input to DH

45

ns

Shoot-thru Protection Delay

45

ns

Bootstrap Switch Resistance

16

Ω

Low-Side Driver (DL, VDDP, PGND)

Peak Current

VDDP = 5V, DL sourcing

2

A

VDDP = 5V, DL sinking

4

On Resistance

R

1.0

2.1

Ω

R

0.50

0.86

Ω

Rise Time

C

7

ns

Fall Time

C

3.5

ns

Notes:

(1) V

(2) For UPSV and FCM operation, the VDDA and VDDA supply current includes the DH/DL current required to drive the external MOSFETS.

(3) The ENL pin will enable the LDO with 0.8V typical. The ENL pin V

UVLO Threshold which is typically 1.56V.

(4) The switch-over threshold is the maximum voltage differential between the VLDO and VOUT pins which ensures that VLDO will internally

switch-over to VOUT. The non-switch-over threshold is the minimum voltage differential between the VLDO and VOUT pins which ensures

that VLDO will not switch-over to VOUT.