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參數資料
| 型號： | MC34166T |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 6 A SWITCHING REGULATOR, 81 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封裝： | TO-220, 5 PIN |
| 文件頁數： | 12/20頁 |
| 文件大小： | 239K |
| 代理商： | MC34166T |
MC34166, MC33166
http://onsemi.com
12
4
2
1
5
3
+
C
F
R
F
R
2
3.3 k
R
1
EA
Reference
Thermal
Oscillator
S
R
Q
PWM
UVLO
ILIMIT
V
in
12 V
C
in
330
+
2.4 k
4.7 k
0.47
Q
1
+
C
O
2200
V
O
-12 V/1.0 A
D
1
1N5822
L
190
μ
H
C
1
0.047
+
+
Test
Conditions
Results
Line Regulation
V
in
= 8.0 V to 24 V, I
O
= 1.0 A
3.0 mV =
±
0.01%
Load Regulation
V
in
= 12 V, I
O
= 0.1 A to 1.0 A
4.0 mV =
±
0.017%
Output Ripple
V
in
= 12 V, I
O
= 1.0 A
80 mV
pp
Short Circuit Current
V
in
= 12 V, R
L
= 0.1
3.74 A
Efficiency
V
in
= 12 V, I
O
= 1.0 A
81.2%
L = Coilcraft M1496–A or General Magnetics Technology GMT–0223, 42 turns of #16 AWG
on Magnetics Inc. 58350–A2 core. Heatsink = AAVID Engineering Inc. 5903B, or 5930B.
Two potential problems arise when designing the standard voltage–inverting converter with the MC34166. First, the Switch Output emitter is
limited to –1.5 V with respect to the ground pin and second, the Error Amplifier’s noninverting input is internally committed to the reference and
is not pinned out. Both of these problems are resolved by connecting the IC ground pin to the converter’s negative output as shown in Figure 23.
This keeps the emitter of Q
positive with respect to the ground pin and has the effect of reversing the Error Amplifier inputs. Note that the voltage
drop across R
1
is equal to 5.05 V when the output is in regulation.
Figure 23. Voltage–Inverting Converter
+
+
+
+
Figure 24. Voltage–Inverting Converter Printed Circuit Board and Component Layout
(Bottom View)
(Top View)
3.0
″
″
1
M
V
Vin
VO
CO
Ci
L
RF
R
D
+
-
+
-
+
+
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC34166TG | 功能描述:直流/直流開關調節器 40V 3A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166TG | 制造商:ON Semiconductor 功能描述:DC/DC Converter IC |
| MC34166TH | 功能描述:直流/直流開關調節器 40V 3A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166THG | 功能描述:直流/直流開關調節器 40V 3A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34166TV | 功能描述:直流/直流開關調節器 40V 3A RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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