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參數資料
| 型號： | LM3501TLX-21 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Synchronous Step-up DC/DC Converter for White LED Applications |
| 中文描述： | 0.8 A SWITCHING REGULATOR, 1150 kHz SWITCHING FREQ-MAX, PBGA8 |
| 封裝： | MICRO, SMD-8 |
| 文件頁數： | 2/18頁 |
| 文件大小： | 1039K |
| 代理商： | LM3501TLX-21 |
Connection Diagram
Top View
20065302
8-bump micro SMD
Ordering Information
Order Number
LM3501TL-16
LM3501TLX-16
LM3501TL-21
LM3501TLX-21
Package Type
micro SMD
micro SMD
micro SMD
micro SMD
NSC Package Drawing
TL08SSA
TL08SSA
TL08SSA
TL08SSA
Top Mark
19
19
30
30
Supplied As
250 Units, Tape and Reel
3000 Units, Tape and Reel
250 Units, Tape and Reel
3000 Units, Tape and Reel
Pin Description/Functions
Pin
A1
B1
C1
C2
C3
B3
A3
A2
Name
AGND
V
IN
V
OUT
V
SW
GND
FB
CNTRL
SHDN
Function
Analog ground.
Analog and Power supply input.
PMOS source connection for synchronous rectification.
Switch pin. Drain connections of both NMOS and PMOS power devices.
Power Ground.
Output voltage feedback connection.
Analog LED current control.
Shutdown control pin.
AGND (pin A1):
Analog ground pin. The analog ground pin
should tie directly to the GND pin.
V
IN
(pin B1):
Analog and Power supply pin. Bypass this pin
with a capacitor, as close to the device as possible, con-
nected between the V
IN
and GND pins.
V
OUT
(pin C1):
Source connection of internal PMOS power
device. Connect the output capacitor between the V
OUT
and
GND pins as close as possible to the device.
V
SW
(pin C2):
Drain connection of internal NMOS and PMOS
switch devices. Keep the inductor connection close to this
pin to minimize EMI radiation.
GND (pin C3):
Power ground pin. Tie directly to ground
plane.
FB (pin B3):
Output voltage feedback connection. Set the
primary White LED network current with a resistor from the
FB pin to GND. Keep the current setting resistor close to the
device and connected between the FB and GND pins.
CNTRL (pin A3):
Analog control of LED current. A voltage
above 125 mV will begin to regulate the LED current. De-
creasing the voltage below 75 mV will turn off the LEDs.
SHDN (pin A2):
Shutdown control pin. Disable the device
with a voltage less than 0.3V and enable the device with a
voltage greater than 1.1V. The white LED current can be
controlled using a PWM signal at this pin. There is an
internal pull down on the SHDN pin, the device is in a
normally off state.
L
www.national.com
2
相關PDF資料 |
PDF描述 |
|---|---|
| LM3501TL-21 | Synchronous Step-up DC/DC Converter for White LED Applications |
| LM3501TLX-16 | PUBLICATIONS, BOOKS RoHS Compliant: NA |
| LM3519 | High Frequency Boost White LED Driver with High-Speed PWM Brightness Control |
| LM3519MK-20 | High Frequency Boost White LED Driver with High-Speed PWM Brightness Control |
| LM3519MKX-20 | High Frequency Boost White LED Driver with High-Speed PWM Brightness Control |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3501TLX-21/NOPB | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| LM3502 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Step-Up Converter for White LED Applications |
| LM3502_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Step-Up Converter for White LED Applications |
| LM3502ITL/NOPB | 制造商:Texas Instruments 功能描述: |
| LM3502ITL-16 | 制造商:Texas Instruments 功能描述:WLED DRIVER 16V POWERWISE LLP-16 |
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