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参数资料
| 型号： | LM5045SQX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 540 kHz SWITCHING FREQ-MAX, QCC28 |
| 封装： | 5 X 5 MM, LLP-28 |
| 文件页数： | 24/28页 |
| 文件大小： | 610K |
| 代理商： | LM5045SQX |
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TSSOP
Pin
LLP Pin
Name
Description
Application Information
19
15
SR2
Synchronous Rectifier Driver
Control output for synchronous rectifier gate. Capable of peak
sourcing 100mA and sinking 400mA.
21
17
VCC
Output of Start-Up Regulator
The output voltage of the start-up regulator is initially regulated to
9.5V. Once the secondary side soft-start (SSSR pin) reaches 1V,
the VCC output is reduced to 7.7V. If an auxiliary winding raises
the voltage on this pin above the regulation set-point, the internal
start-up regulator will shutdown, thus reducing the IC power
dissipation.
22
18
PGND
Power Ground
Connect directly to Analog Ground
23, 20
19, 16
LO1, LO2 Low Side Output Driver
Alternating output of the PWM gate driver. Capable of 1.5A peak
source and 2A peak sink current.
24
20
SR1
Synchronous Rectifier Driver
Control output for synchronous rectifier gate. Capable of peak
sourcing 100mA and sinking 400mA.
25, 18
21, 14
BST1,2
Gate Drive Bootstrap
Bootstrap capacitors connected between BST1,2 and SW1,2
provide bias supply for the high side HO1,2 gate drivers. External
diodes are required between VCC and BST1,2 to charge the
bootstrap capacitors when SW1,2 are low.
26, 17
22, 13
HO1,2
High Side Output Driver
High side PWM outputs capable of driving the upper MOSFET of
the bridge with 1.5A peak source and 2A peak sink current.
27, 16
23, 12
HS1,2
Switch Node
Common connection of the high side FET source, low side FET
drain and transformer primary winding.
28
24
VIN
Input Power Source
Input to the Start-up Regulator. Operating input range is 14V to
100V. For power sources outside of this range, the LM5045 can
be biased directly at VCC by an external regulator.
5
www.national.com
LM5045
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM5045SQX/NOPB | 功能描述:IC PWM CTRLR FULL BRIDG 28LLP RoHS:是 类别:集成电路 (IC) >> PMIC - AC-DC 转换器，离线开关 系列:PowerWise® 标准包装:1 系列:FPS™ 输出隔离:隔离 频率范围:61kHz ~ 73kHz 输入电压:8 V ~ 26 V 输出电压:650V 功率（瓦特）:12W 工作温度:-40°C ~ 115°C 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-MDIP 包装:Digi-Reel® 其它名称:FSL206MRBNFSDKR |
| LM5046 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Input operating range: 36V to 75V Line UVLO (34V/32V on/off) |
| LM5046_1 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Input operating range: 36V to 75V Line UVLO (34V/32V on/off) |
| LM5046EVAL/NOPB | 功能描述:电源管理IC开发工具 LM5046 Eval Brd RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| LM5046MH | 制造商:Texas Instruments 功能描述:CTLR, FULL BRIDGE, PWM, 28TSSOP 制造商:Texas Instruments 功能描述:CTLR, FULL BRIDGE, PWM, 28TSSOP; Input Voltage:100V; Supply Voltage Min:12.5V; Supply Voltage Max:30V; Digital IC Case Style:TSSOP; No. of Pins:28; Frequency:2MHz; Operating Temperature Min:-40C; Operating Temperature Max:125C; ;RoHS Compliant: Yes |
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