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參數(shù)資料
| 型號(hào)： | TEA5170 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Switch Mode Power Supply Secondary Circuit(開關(guān)模式電源次級(jí)電路) |
| 中文描述： | 開關(guān)電源二次回路（開關(guān)模式電源次級(jí)電路） |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 117K |
| 代理商： | TEA5170 |
ELECTRICAL CHARACTERISTICS
(T
A
= 25
o
C, V
CC
= 12V, unless otherwise specified)
Symbol
OSCILLATOR
TA
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Free Period
RT = 100k
±
0%
CT = 1.2nF
±
0%, Vcc = 12V
RT = 100k
±
0%
CT = 560pF
±
0%, Vcc = 12V
RT = 100k
±
0%
CT = 1.2nF
±
0%, Vcc = 12V
60.40 65.60 70.80
μ
S
TB
29.18 31.70 34.22
μ
S
F
OSC
(T)
Frequency drift due to ambient
temperature variation from 0
C to 70
o
C
F
OSC
(
70
o
C
)
F
OSC
(
0
o
C
)
70
o
C x F
OSC
(
25
o
C
)
Frequency drift due to V
CC
variation
from 5V to 12V
F
OSC
(
12V
)
F
OSC
(
5V
)
7V
x F
OSC
(
12V
)
ERROR VOLTAGE AMPLIFIER (V
CC
= 12V)
Ibias
Input Bias Current
Gvol
Voltage Gain
GB
Gain Bandwidth
Slew Rate
INTERNAL VOLTAGE REFERENCE
V
REF
Voltage Reference
0.01
%/
°
C
F
OSC
(V
CC
)
RT = 100k
±
0%
CT = 1.2nF
±
0%
0.07
%/V
Ein = 2V
0
0.2
80
2
2
1
μ
A
dB
MHz
V/
μ
s
Using the voltage error
amplifier as a follower
1.9
2
2.1
V
V
REF
(V
CC
) Line Regulation V
REF
(
12V
)
V
REF
(
5V
)
7V
V
CC
= 5V to 12V
– 3
0.4
3
mV/V
V
REF
(T)
V
REF
drift with temperature
V
REF
(
70
o
C
)
V
REF
(
0
o
C
)
70
o
C
T
A
= 0
°
C to 70
°
C
0.2
mV/
°
T
ON MIN
T
ONMIN A
Minimum Duty Cycle
Ct = 1.2nF
±
0%
Rt = 100k
±
0%
Ct = 560pf
±
0%
Rt = 100k
±
0%
1.77
2.53
3.29
μ
s
T
ONMIN B
Minimum Duty Cycle
1.04
1.49
1.94
μ
s
POWER OUTPUT STAGE
V
POUTH
V
POUTL
I
SINK
I
SOURCE
SYNCHRONISATION
F
trig Max
V
trig
T
trigp
Output High Level
Output Low Level
Sink Current
Source Current
I
load
= 1mA
I
load
= – 1mA
V
POUT
= 3V
V
POUT
= 3V
6.3
0.5
30
30
6.9
0.8
60
110
7.5
1.1
190
190
V
V
mA
mA
Maximum Synchro Frequency
Synchro Triggering Threshold
Synchro Triggering Pulse Width
Positive Triggering Window T
trig
+
T
O
64
kHz
V
nS
2.7
3
at VRT = 2.7Volt (fig 5)
CT = 1.2nF
±
0%
RT = 100k
±
0%
800
Wtrig +
T
O
25
35
40
%
Wtrig –
Negative Triggering Window T
O
T
trig
T
O
CT = 1.2nF
±
0%
RT = 100k
±
0%
9
29
42
%
SOFT START
I
csf
Donmax
*Csf Load Current
Maximum Duty Cycle
V
csf
= 1V
V
cs
> 2.5V, V
CC
= 12V
CT = 1.2nf
±
0%
RT = 100k
±
0%
2.5
60
3.7
78
6
μ
A
%
95
*Csf is a high impedance capacitor
5
TEA5170
3/9
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