參數(shù)資料
型號(hào): SG3527AJ
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: Regulating Pulse Width Modulators
中文描述: 0.4 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, CDIP16
封裝: HERMETIC SEALED, DIP-16
文件頁(yè)數(shù): 5/8頁(yè)
文件大小: 205K
代理商: SG3527AJ
SG3525A SG3527A
5
MOTOROLA ANALOG IC DEVICE DATA
R
,
)
Figure 1. Oscillator Charge Time versus RT
Figure 2. Oscillator Discharge Time versus RD
Figure 3. Error Amplifier Open Loop
Frequency Response
Figure 4. Output Saturation
Characteristics (SG3525A)
2.0
5.0
10
20
50
100 200 500 1000 2000 5000 10,000
CHARGE TIME (
μ
s)
6
5
7
RD *
CT
RT
* RD = 0
0.2
0.5
1.0
2.0
DISCHARGE TIME (
μ
s)
5.0
10
20
50
100
200
,
D
R
)
1.0
10
100
1.0 k
f, FREQUENCY (Hz)
10 k
100 k
1.0 M
10 M
1
2
9
CP
RZ
,
V
A
+
RZ = 20 k
Vref
RT
CT
Sync
Discharge
Gnd
16
6
5
3
7
12
Q2
Q1
Q6
Q9
2.0k
2.0k
14k
Q10
Q11
5.0pF
400
μ
A
23k
Q4
Q7
1.0k
Q12
Q13
3.0k
250
4
Blanking
To Output
Ramp
To PWM
Q14
25k
7.4k
Q5
Q8
Q3
OSC Output
1.0k
15
Q3
VCC
9
30
Compensation
1
2
Q4
Q1
Q2
Inverting
Input
5.8V
100
μ
A
To PWM
Comparator
200
μ
A
Noninverting
Input
Figure 5. Oscillator Schematic (SG3525A)
0.01
0.02 0.03
IO, OUTPUT SOURCE OR SINK CURRENT (A)
0.05 0.07 0.1
0.2
0.3
0.5
0.7 1.0
,
s
V
Sink Sat, (VOL)
Source Sat, (VC–VOH)
VCC = +20 V
TJ = +25
°
C
Figure 6. Error Amplifier Schematic (SG3525A)
200
100
50
20
10
5.0
2.0
500
400
300
200
100
0
100
80
60
40
20
0
–20
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
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