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參數(shù)資料
| 型號： | LM2574-ADJ |
| 廠商： | Motorola, Inc. |
| 英文描述： | Octal D-type Edge-Triggered Flip-Flops With 3-State Outputs 20-SOIC -40 to 85 |
| 中文描述： | 易SWITCHERE⑩0.5降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大?。?/td> | 397K |
| 代理商： | LM2574-ADJ |
LM2574
2
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Block Diagram and Typical Application
7.0 – 40 V
Unregulated
DC Input
L1
330
μ
H
Pwr
Gnd
+Vin
5
Cin
22
μ
F
4
ON/OFF
3
Output
7
Feedback
1
D1
1N5819
Cout
220
μ
F
Typical Application
(Fixed Output Voltage Versions)
Representative Block Diagram and Typical Application
Unregulated
DC Input
+Vin
5
Cout
Feedback
1
Cin
L1
D1
R2
R1
1.0 k
Output
7
Pwr Gnd
4
ON/OFF
3
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
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
LM2574
5.0 V Regulated
Output 0.5 A Load
Sig
Gnd
2
Sig Gnd
2
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
DW Suffix, Plastic Package Case 751G
Max Power Dissipation
Thermal Resistance, Junction–to–Air
PD
R
θ
JA
Internally Limited
145
W
°
C/W
N Suffix, Plastic Package Case 626
Max Power Dissipation
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
PD
R
θ
JA
R
θ
JC
Tstg
–
Internally Limited
100
5.0
W
°
C/W
°
C/W
Storage Temperature Range
–65
°
C to +150
°
C
°
C
Minimum ESD Rating
(Human Body Model: C = 100 pF, R = 1.5 k
)
Lead Temperature (Soldering, 10 seconds)
2.0
kV
–
260
°
C
Maximum Junction Temperature
TJ
150
°
C
NOTE:
ESD data available upon request.
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| LM2574DW-ADJR2 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 500mA Adj. Step Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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