參數(shù)資料
型號(hào): TL2575
廠商: Texas Instruments, Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
中文描述: 1,一個(gè)簡(jiǎn)單的步驟式開關(guān)穩(wěn)壓器
文件頁數(shù): 3/23頁
文件大?。?/td> 2155K
代理商: TL2575
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 Amplifier
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
TL2575-05
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
TL2575, TL2575HV
1-A SIMPLE STEP-DOWN SWITCHING VOLTAGE REGULATORS
SLVS638–MAY 2006
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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