L9396 datasheet(30/109 Pages) STMICROELECTRONICS

30 / 109 page

Power supply

L9396

30/109

DS12539 Rev 6

LVCORE

Buck inductor

VCORE > 1.2 V

-20%

+20%

µH

LVCORE

Buck inductor

VCORE ≤ 1.2 V

-20%

+20%

µH

RLVCORE

Buck inductor

resistance

105

mΩ

CFET

External FET gate

charge

CBS

Bootstrap capacitor -

100

VCOREFDBK

Feedback voltage

Excluding external

voltage divider

accuracy

0.8 -3%

0.8 +3%

dVSR_ac

Line Transient

Response

All line, load;

dt = 10 µs

-8%

dVLR_ac

Load Transient

Response

All line, load;

dt = 10 µs

-8%

VCORE ripple

Ripple voltage

-20

+20

IOC_VCORE_BUCK

Over current

detection

RSH_HI_CURR

1.6

2.6

Rdson_hs

High side on

resistance

Ω

Rdson_ls

Low side on

resistance

8.3

Ω

tflt_oc_vcore

Shut down filter

time for short to

ground

Filter time starts to

count from when

current in power

MOS is more than

IO_LIM

100

115

µs

tflt_restart

restart filter time for

short to ground

Filter time starts to

count from when

core buck is

disabled

1.7

2.3

Sw_fr

Switching

frequency

fOSCINT

/34

(0.470)

-MHz

PSRR

Power supply

rejection ratio

VPREREG = 6.5 V,

Vnoise = 1 Vpp

fnoise = 20 kHz,

CVCORE = 22 µF

LVCORE = 22 µH

Table 12. VCORE regulator electrical characteristics (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

L9396 Datasheet(PDF) 30 Page - STMicroelectronics

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