L6260 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

L6260

4.5-5.5V DISK DRIVER SPINDLE & VCM, POWER & CONTROL COMBOS

STMicroelectronics 

Prev 11 12 13 14 15 16 17 18 19 20 Next

L6260

Figure 3.

1.25V(rising)

1.23V(falling)

UV1 pin

BANDGAP

REFERENCE

1.25V reference

HYSTERESIS

CONTROL

+

Comp

-

POR

TIMER

POR pin

UV2 pin

+

Comp

-

RESET DURATION =CPOR_DLY X 1.25

2E -6

POR-DLY pin

External Cap

D94IN092

POR Parameters

SYMBOL

CPORDLY

Td elay

UVrise

UVfall

TUVD

PARAMETER

POR delay capacitor

Delay time

Rising edge reference

Falling edge reference

Under voltage detect to POR low

(*) See previous equation

(**) See hysteresis transfer function below

MIN.

220

(*)

TYP.

2200

(*)

1.25

1.23

MAX

4700

(*)

250

UNITS

pF

V (**)

V (**)

ns

Figure 4: Hysteresis Comparitor Transfer Characteristic for Under Voltage Detection.

1.25V (POWER GOING UP)

POWER OK

16/30

UNDER VOLTAGE DETECTED

1.23V (POWER GOING DOWN)

UV/2

D94IN093

Share Link: