參數(shù)資料
型號(hào)： SI3025
廠商： Allegro MicroSystems, Inc.
英文描述： COOLER FOR TO-3 20 WATTS
中文描述： 低電壓，高電流線性穩(wěn)壓器1.8伏
文件頁(yè)數(shù)： 4/54頁(yè)
文件大?。?/td> 1407K
代理商： SI3025
Si3035
4
Rev. 1.2
Electrical Specifications
Figure 1. Test Circuit for Loop Characteristics
Table 1. Recommended Operating Conditions
Parameter
1
Symbol
Test Condition
Min
2
Typ
Max
2
Unit
Ambient Temperature
T
A
V
A
V
D
K-Grade
0
25
70
°C
Si3021 Supply Voltage, Analog
Si3021 Supply Voltage, Digital
3
4.75
5.0
5.25
V
3.0
3.3/5.0
5.25
V
Notes:
1.
The Si3035 specifications are guaranteed when the typical application circuit (including component
tolerances) and any Si3021 and any Si3012 are used. See Figure 16 on page 15 for typical application
circuit.
2.
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at nominal supply voltages and an operating temperature of 25 °C unless otherwise stated.
3.
The digital supply, V
D
, can operate from either 3.3 V or 5.0 V. The Si3021 supports interface to 3.3 V logic when
operating from 3.3 V. The 3.3 V operation applies to both the serial port and the digital signals
RGDT, OFHK, RESET, M0, and M1.
Table 2. Loop Characteristics
(V
A
= Charge Pump, V
D
= +3.3 V ± 0.3 V, T
A
= 0 to 70°C for K-Grade, Refer to Figure 1)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
DC Termination Voltage
V
TR
V
TR
I
RDC
I
RDC
Z
ACT
I
LP
LCS
I
L
= 20 mA
I
L
= 105 mA
—
—
7.7
V
DC Termination Voltage
12
—
—
V
DC Ring Current (
with caller ID)
—
—
1
mA
DC Ring Current
(w/o caller ID)
—
—
20
μA
mA
AC Termination Impedance
—
600
—
Operating Loop Current
20
—
120
Loop Current Sense Bits
LCS = Fh
180
155
—
mA
Ring Voltage Detect
V
RD
F
R
I
LK
REN
13
18
26
V
RMS
Hz
Ring Frequency
15
—
68
On-Hook Leakage Current
V
BAT
= –48 V
—
—
1
μA
Ringer Equivalence Num. (
with caller ID)
—
1.0
1.67
—
Ringer Equivalence Num.
(w/o caller ID)
REN
—
0.2
—
—
TIP
RING
+
–
Si3012 V
TR
600
10
μ
F
I
L
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