STLC3065Q STMicroelectronics, STLC3065Q Datasheet - Page 14

• Manufacturer Part Number: STLC3065Q
• Manufacturer: STMicroelectronics

Specifications of STLC3065Q

• Number Of Channels: 1
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Operating Temp Range: -40C to 85C
• Package Type: TQFP
• Operating Temperature Classification: Industrial
• Pin Count: 44
• Mounting: Surface Mount
• Operating Supply Voltage (min): 5.5V
• Lead Free Status / RoHS Status: Not Compliant

STLC3065
EXTERNAL COMPONENTS (continued)
(1) In case Zs=Zl, ZA and ZB can be replaced by two resistors of same value: RA=RB=|Zs|.
(2) In this case CTTX is just operating as a DC decoupling capacitor (fp=100Hz).
(3) Defining ZTTX as the impedance of RTTX in series with CTTX, RTTX and CTTX can also be calculated from the following formula:
(4) CVpos should be defined depending on the power supply current capability and maximum allowable ripple.
(5) For low ripple application use 2x47 F in parallel.
(6) Can be saved if proper PCB layout avoid noise coupling on RD pin (high impedance input).
(7) RF1 sets the self generated battery voltage in RING and ACTIVE(Il=0) mode as follows:
VBATR should be defined considering the ring peak level required (Vringpeak=VBATR-6V typ.).
The above relation is valid provided that the Vpos power supply current capability and the RSENSE programming allow to source all the
current requested by the particular ringer load configuration.
(8) Core: MICROMETALS T50-26C IRON POWDER, AL-VALUE 61nH/N2
(9) For high efficiency in HI-Z mode coil resistance @125kHz must be <3ohm
(10) Function of this capacitor is to introduce a zero at the resonance frequency for loop stability. In case some parasitic resistance are already
present in the loop (Coil, CVBAT, PCB layout), the presence of this capacitor can degrade the device noise performances; in this case CF1
should be removed being the loop stability already guaranteed by the parasitic resistance.
14/27
V
V
RSENSE
CRD (6)
BAT(ACTIVE)
BATR(RING)
ZTTX=50*(Zlttx+2Rp+18 ).
Name
L (8)
CF1
RF1
RF2
Q1
D1
Current rating: 2A (50/60Hz)
Operating Temperature -25° to +60° Centigrades
Inductance: 14 H +/-15% at 1KHz, 1mA
DC resistance of winding: MAX.100 mOhm
Code: RFY1303
Wire: UEW2, 0,60 mm
Turns: 50
Inductance (f=1KHz): >125 H
High frequency noise filter
DC/DC converter switch P ch.
MOS transistor
DC/DC converter series diode
DC/DC converter peak current
limiting
DC/DC converter inductor
DC/DC converter feedback loop
stability
Negative battery programming
level
Negative battery programming
level
Function
267k
-46V
-62V
280k
-48V
-65V
RDS(ON) 1.2 ,VDS = -100V
Total gate charge=20nC max.
with VGS=4.5V and VDS=1V
ID>500mA
Vr > 100V, t
RSENSE = 100mV/I
DC Resistance
250K <RF1<300K
294kW
-49V
-68V
Formula
RR
50ns
0.1
PK
(7)
300k
(9)
-50V
-70V
Possible choiches:
IRF9510 or IRF9520 or
IRF9120 or equivalent
L=125 H RFP1304PV
or SUMIDA CDRH125
(Manuf.: All Inductive)
220pF to 470pF (10)
100nF 10% 15VL
@ V
SMBYW01-200
@I
or equivalent
or equivalent
Typ. Value
300kW 1%
9.1k
PK
110m
BATR
= 900mA
= -70V
1%