E-STLC3085 Просмотр технического описания (PDF) - STMicroelectronics

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Компоненты Описание

производитель

E-STLC3085

Integrated Pots Interface for Home Access Gateway and WLL

STMicroelectronics 

Functional description

Table 10. External Components (continued)

Name

Function

Formula

CSVR Negative Battery Filter

CSVR = 1/(2π ⋅ fp ⋅ 1.8MΩ)

fp = 50Hz

RD

Ring Trip threshold setting

resistor

RD = 100/IRTH

2KΩ < RD < 5KΩ

CAC AC/DC split capacitance

RP Line protection resistor

Rp > 30Ω

RLIM Current limiting programming

RLIM = 1300/Ilim

52.3kΩ < RLIM < 65kΩ

RTH

Off-hook threshold programming RTH = 290/ITH

(ACTIVE mode)

27kΩ < RTH < 52kΩ

CREV

Reverse polarity transition time

programming

CREV = ((1/3750) · ∆T/∆VTR)

RDD Pull up resistors

CVCC Internally supply filter capacitor

Positive supply filter capacitor

CVpos(1) with low impedance for switch

mode power supply

CV(2)

Battery supply filter capacitor

with low impedance for switch

mode power supply

CVB High frequency noise filter

CRD(3) High frequency noise filter

CZ

Fly-Back compensation

capacitor

CSF Sense Filter capacitor

RSF Sense Filter resistor

RSENSE

DC/DC converter peak current

limiting

RSENSE = 375mV/IPK

RDS(ON)≤0.05Ω,VDSS = 30V

DC/DC converter switch Nchan

Q1

VDG=30V, ID = 6.5A

MOS transistor

Low threshold drive

D1 DC/DC converter series diode Vr > 350V, tRR ≤ 80ns

T1 DC/DC Converter transformer

Name

Function

Fly-Back transformer 4W, Turns

Ratio 1:16 fro VPOS range from

4.5V to 8.5V

Formula

STLC3085

Typ. Value

1.5nF 10%

100V

4.12kΩ 1%

@ IRTH = 24mA

22µF 20% 15V

@ RD = 4.12kΩ

50Ω 1%

52.3kΩ 1%

@ Ilim = 25mA

32.4kΩ 1%

@ITH = 9mA

22nF 10% 10V

@ 12V/ms

100kΩ

100nF 20% 10V

100µF

100µF 20% 100V

470nF 20% 100V

100nF 10% 15V

2.2nF, 20%

120pF, 20%

1kΩ

220mΩ @IPK = 1.7A

STN4NF03L

or equivalent

SMBYTW01-400

or equivalent

Tyco COEV MAGNETICS

MGPWG-00007

Typ. Value

18/28

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