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參數(shù)資料
| 型號(hào)： | LM2575-5.0BU |
| 廠商： | MICREL INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Advanced LinCMOS(TM) Precision Chopper-Stabilized Operational Amplifier 14-PDIP |
| 中文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封裝： | TO-263, 5 PIN |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大?。?/td> | 195K |
| 代理商： | LM2575-5.0BU |
www.ti.com
Internal
Regulator
On/Off
_
+
_
+
1.23-V
Band-Gap
Reference
52-kHz
Oscillator
Reset
Thermal
Shutdown
Current
Limit
FEEDBACK
4
C
IN
+
V
IN
1
Unregulated
DC Input
GND
3
OUTPUT
2
ON/OFF
5
C
OUT
+
D1
L
O
A
D
V
OUT
1-A
Switch
Driver
Fixed-Gain
Error Amp
Comparator
R2
R1
1 k
3.3 V: R2 = 1.7 k
5 V: R2 = 3.1 k
12 V: R2 = 8.84 k
15 V: R2 = 11.3 k
ADJ: R1 = Open, R2 = 0
L1
LM2575-05
7-V to 40-V
Unregulated
DC Input
C
IN
100
μ
F
+
+V
IN
1
3
GND
5
ON/OFF
D1
1N5819
OUTPUT
2
L1
330
μ
H
C
OUT
330
μ
F
+
FEEDBACK
4
5-V
Regulated
Output
1-A Load
L2
20
μ
H
C1
100
μ
F
+
Optional Output Ripple Filter
LM2575
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATOR
SLVS569D–JANUARY 2005–REVISED JULY 2005
FUNCTIONAL BLOCK DIAGRAM
A.
Pin numbers are for the KTT (TO-263) package.
A.
Pin numbers are for the KTT (TO-263) package.
Figure 1. Typical Application Circuit (Fixed Version)
3
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