LNBS21PD(2002) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

LNBS21PD
(Rev.:2002)

LNB SUPPLY AND CONTROL IC WITH STEP-UP CONVERTER AND I2C INTERFACE

STMicroelectronics 

LNBS21

GATE AND SENSE ELECTRICAL CHARACTERISTICS (TJ = 0 to 85°C, VIN=12V)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

RDSON-L Gate LOW RDSON

RDSON-H Gate LOW RDSON

VSENSE Current Limit Sense Voltage

IGATE=-100mA

IGATE=100mA

4.5

Ω

4.5

Ω

200

mV

I2C ELECTRICAL CHARACTERISTICS (TJ = 0 to 85°C, VIN=12V)

Symbol

Parameter

Test Conditions

VIL

VIH

IIH

VIL

fMAX

LOW Level Input Voltage SDA, SCL

HIGH Level Input Voltage SDA, SCL

Input Current

DSQIN Input Pin Logic

LOW

Maximum Clock Frequency

SDA, SCL, VIN= 0.4 to 4.5V

SDA (open drain), IOL = 6mA

SCL

Min. Typ. Max. Unit

0.8

V

2

V

-10

10

µA

0.6

V

500

KHz

ADDRESS PIN CHARACTERISTICS (TJ = 0 to 85°C, VIN=12V)

Symbol

Parameter

Test Conditions

VADDR-1 "0001000" Addr Pin Voltage

VADDR-2 "0001001" Addr Pin Voltage

VADDR-3 "0001010" Addr Pin Voltage

VADDR-4 "0001011" Addr Pin Voltage

Min. Typ. Max. Unit

0

0.7

V

1.3

1.7

V

2.3

2.7

V

3.3

5

V

TEST CIRCUIT

1N4001

STPS3L40A

Vin

L1=22µH

IIN

A

{ From I2C SDA

Master SCL

Pulse Gen.

Vup

220µF

470nF

STN4NF03L

Gate

Rsc

0.05Ω

Sense

Vcc LNBS21

LT1

LT2

OUT

220µF

470nF

470nF

SDA

SCL

DSQIN

BYP

EXTM

DETIN

DSQOUT

ADDRESS

10nF

V VLT

V V ILT

MI, OBK

A

Scope Probe

IOUT, IOBK

10nF

A

Load

20µF

V VOUT

10nF

VEXTM, VDETIN

V VOL

A

IOZ / IOL

VOH / IOL

10/19

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