L5963 datasheet(14/45 Pages) STMICROELECTRONICS

14 / 45 page

Electrical specifications

L5963

14/45

DocID028553 Rev 1

ΔVFBLDO /

VFBLDO

FBLDO Undershoot/overshoot

(3)

5 mA

 250 mA Iload transition

-5

 18 V VINLDO transition

-5

VdoLDO

Drop-out voltage

VOUTLDO = 3.3 V

Iload = 250 mA

VOUTLDO decreasing of 100 mV

270

320

IshortLDO

Short circuit current limit

VOUTLDO shorted to ground

350

420

IshortST-BY

VOUTLDO (st-by) shorted to

ground

-65

PSRRLDO

Power supply rejection ratio

Iload = 50 mA, 10 Hz < f < 10 kHz

1 Vacpp on VINLDO

-70-

nLDO

Output noise

20 Hz < f < 20 kHz

Iload = 5 mA

100

μV

TSDLDO

Thermal shut-down

temperature

Temperature rising

150

160

°C

HysTSDLDO

Hysteresis on thermal

shutdown temperature

-5

°C

Output capacitance

μF

ESR

Output capacitor ESR

0.2



Voltage detector on LDO

THRLDOOK /

VFBLDO

LDOOK threshold as

percentage of FBLDO voltage

919497

HysLDOOK

Hysteresis on LDOOK

VmaxLDOOK LDOOK saturation voltage

I = 1 mA in LDOOK pin

0.2

TglitchLDOOK Glitch filter time for LDO-OK

μs

ILDOOKDLY

LDOOKDLY output current

μA

THRLDOOKDLY LDOOKDLY threshold

2.2

2.4

Switching regulators (1), (2)

VFBSWx

Feedback voltage

Iload = 100 mA

980

1000

1020

LdRSWx

FBSWx load regulation

50 mA < Iload < 1 A

LnRSWx

FBSWx line regulation

3.5 V < VINSWx < 26 V

UVSW1

Undervoltage shut-down

threshold on SW1

VINSWx decreasing

2.8

HysSW1

Hysteresis on UVSW1

0.15

UVSW2

Undervoltage shut-down

threshold on SW2

VINSWx decreasing

2.8

HysSW2

Hysteresis on UVSW2

0.15

ΔVFBSWx /

VFBSWx

FBSWx pin

undershoot/overshoot(3)

500 mA

 1.5 A Iload transition

-5

 18 V VINSWx transition

-5

Table 6. Electrical characteristics (continued)

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

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