SIC402DB(2012) Ver la hoja de datos (PDF) - Vishay Semiconductors

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SIC402DB
(Rev.:2012)

10 A microBUCK® SiC402A/B Integrated Buck Regulator with Programmable LDO

Vishay Semiconductors 

SiC402A, SiC402BCD

Vishay Siliconix

ELECTRICAL SPECIFICATIONS

Parameter

Symbol

Linear Dropout Regulator

FBLb

VLDO ACC

LDO Current Limit

LDO_ILIM

VLDO to VOUT Switch-Over Thresholdd

VLDO to VOUT Non-Switch-Over Thresholdd

VLDO to VOUT Switch-Over Resistance

LDO Drop Out Voltagee

VLDO-BPS

VLDO-NBPS

RLDO

Test Conditions Unless Specified

VIN = 12 V, TA = + 25 °C for typ.,

- 40 °C to + 85 °C for min. and max.,

TJ = < 125 °C, VDD = + 5 V,

typical application circuit

Short-circuit protection,

VIN =12 V, VDD < 0.75 V

Start-up and foldback, VIN = 12 V,

0.75 < VDD < 90 % of final VDD value

Operating current limit, VIN = 12 V,

VDD > 90 % of final VDD value

VOUT = 5 V

From VIN to VDD, VDD = + 5 V,

IVLDO = 100 mA

Limits

Unit

Min. Typ. Max.

0.75

V

65

115

mA

135

- 130

- 500

200

+ 130

mV

+ 500

2



1.2

V

Notes:

a. VIN UVLO is programmable using a resistor divider from VIN to ENL to AGND. The ENL voltage is compared to an internal reference.

b. Typical value measured on standard evaluation board.

c. SiC402A/B has first order temperature compensation for over current. Results vary based upon the PCB thermal layout.

d. The switch-over threshold is the maximum voltage differential between the VDD 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.

e. The LDO drop out voltage is the voltage at which the LDO output drops 2 % below the nominal regulation point.

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For technical questions, contact: powerictechsupport@vishay.com

Document Number: 63729

6

S12-2109-Rev. B, 03-Sep-12

This document is subject to change without notice.

THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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