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參數(shù)資料
| 型號： | LM2575-3.3 |
| 廠商： | Motorola, Inc. |
| 英文描述： | EASY SWITCHERE⑩ 1.0 A STEP-DOWN VOLTAGE REGULATOR |
| 中文描述： | 易SWITCHERE⑩1.0降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 2/28頁 |
| 文件大?。?/td> | 400K |
| 代理商： | LM2575-3.3 |
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LM2575
2
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Block Diagram and Typical Application
7.0 V – 40 V
Unregulated
DC Input
L1
330
μ
H
Gnd
+Vin
1
Cin
100
μ
F
3
ON/OFF
5
Output
2
Feedback
4
D1
1N5819
Cout
330
μ
F
Typical Application
(Fixed Output Voltage Versions)
Representative Block Diagram and Typical Application
Unregulated
DC Input
+Vin
1
Cout
Feedback
4
Cin
L1
D1
R2
R1
1.0 k
Output
2
Gnd
3
ON/OFF
5
Reset
Latch
Thermal
Shutdown
52 kHz
Oscillator
1.235 V
Band–Gap
Reference
Freq
Shift
18 kHz
Comparator
Fixed Gain
Error Amplifier
Current
Limit
Driver
1.0 Amp
Switch
ON/OFF
3.1 V Internal
Regulator
Regulated
Output
Vout
Load
Output
Voltage Versions
3.3 V
5.0 V
12 V
15 V
For adjustable version
R1 = open, R2 = 0
R2
(
)
1.7 k
3.1 k
8.84 k
11.3 k
LM2575
5.0 V Regulated
Output 1.0 A Load
This device contains 162 active transistors.
ABSOLUTE MAXIMUM RATINGS
(Absolute Maximum Ratings indicate limits beyond
which damage to the device may occur.)
Rating
Symbol
Value
Unit
Maximum Supply Voltage
Vin
–
45
V
ON/OFF Pin Input Voltage
–0.3 V
≤
V
≤
+Vin
–1.0
V
Output Voltage to Ground (Steady–State)
–
V
Power Dissipation
Case 314B and 314D (TO–220, 5–Lead)
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936A (D2PAK)
Thermal Resistance, Junction–to–Ambient
(Figure 34)
Thermal Resistance, Junction–to–Case
PD
R
θ
JA
R
θ
JC
PD
R
θ
JA
Internally Limited
65
5.0
Internally Limited
70
W
°
C/W
°
C/W
W
°
C/W
R
θ
JC
Tstg
–
5.0
°
C/W
Storage Temperature Range
–65 to +150
°
C
Minimum ESD Rating (Human Body Model: C
= 100 pF, R = 1.5 k
)
3.0
kV
Lead Temperature (Soldering, 10 s)
–
260
°
C
Maximum Junction Temperature
TJ
150
°
C
NOTE:
ESD data available upon request.
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| LM257533BT | 制造商:MICREL 功能描述:New |
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