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參數(shù)資料
| 型號： | TDA8385 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Control circuit for a Self-Oscillating Power Supply SOPS |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 13/21頁 |
| 文件大?。?/td> | 199K |
| 代理商： | TDA8385 |
March 1994
14
Philips Semiconductors
Preliminary specification
Control circuit for a Self-Oscillating
Power Supply (SOPS)
TDA8385
CHARACTERISTICS
V
P
= 15 V; I
3
= 200
μ
A; T
amb
= 25
°
C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V
P
V
16
V
16(hys)
I
16
V
11
supply voltage (pin 16)
supply initialization level
internal fixed hysteresis
supply current
supply voltage ripple rejection
7.9
7.1
2.5
7.5
60
20
7.9
2.55
20
V
V
V
mA
mV
active LED output
see Figs 13 and 14
Reference voltage
V
3
reference voltage at pin 3
0.52
0.55
0.58
V
Error amplifier
V
9
I
9
I
11
I
11
G
o
B
V
9
/
T
V
5
threshold voltage error amplitude
input current feedback input
sink current output
source current output
open loop gain
unity gain bandwidth
temperature coefficient
threshold for switching output
2.4
400
500
2.5
100
600
±
300
×
10
6
V
diff
V
os(1)
2.6
0.5
V
μ
A
μ
A
μ
A
dB
kHz
K
1
V
V
11
= 80 mV
V
11
= 2.5 V
V
diff
= 1.25 V;
V
4
= 2 V; V
13
= 0 V;
V
7
>
V
9
; I
2
= 2 mA
Transfer characteristic generator
I
4
/I
3
V
5
current ratio
threshold for switching output
V
4
= 0.5 V
V
4
= 0.5 V; V
13
= 0 V;
V
7
>
V
9
; I
2
= 2 mA
V
9
= 0 V
V
9
= 0.4 V
V
9
= 1 V
V
9
= 1.6 V
V
9
= 2.25 V
note 2
0.23
0.25
0.27
T
on(min)
V
fb
= 20%
V
fb
= 50%
V
fb
= 80%
clamp
response time pulse width
modulation pin 5 to pin 2
LOW-to-HIGH
response time pulse width
modulation pin 5 to pin 2
HIGH-to-LOW
0.4
V
os
1.4
V
os
2.4
V
os
0.5
V
os
0.9
V
os
1.5
V
os
2.1
V
os
0.6
V
os
1.6
V
os
2.6
V
os
700
V
V
V
V
V
ns
t
PLH
t
PHL
note 2
1
μ
s
Feed forward
V
5
threshold for switching output
(V
fo
)
V
4
= 0.5 V; V
13
= 0 V;
V
7
= V
9
= 3 V;
I
2
= 2 mA; V
11
= 1 V
V
13
= 0 V
0.6
V
os
0.7
V
os
0.8
V
os
V
I
13
input bias current
1
μ
A
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