Preliminary Data Sheet
September 2001
L9216B/H
High-Voltage Ringing SLIC with Ground Start
Architecture Diagram
AGND
V
CC
BGND
V
BAT2
V
BAT1
V
PROG
NSTAT
RTFLT
DCOUT
V
REF
VITR
B = 20
POWER
CURRENT
LIMIT
AND
INRUSH
CONTROL
RING
TRIP
LOOP
CLOSURE
AAC
TXI
ITR
–
VTX
OUT
AX
+
(ITR/306)
V
REF
X1
CF2
1.5 V
BAND-GAP
REFERENCE
VTX
RECTIFIER
COMMON-
MODE
CURRENT
DETECTOR
ICM
RGDET
RFT
PT
ITR
18
Ω
+1
–
+
X1
CF1
FB2
FB1
–
GAIN
+
–
V
REG
ac INTERFACE
9216B GAIN = 4
9216H GAIN = 1
PARALLEL
DATA
INTERFACE
RCVN
RCVP
V
REG
TIP/RING
CURRENT
SENSE
ITR
PR
RFR
18
Ω
–1
+
RINGING
27.5x
RING
IN
B0
B1
B2
12-3530.i (F)
Figure 1. Architecture Diagram
Agere Systems Inc.
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