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參數(shù)資料
| 型號： | LM27952 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | White LED Adaptive 1.5X/1X Switched Capacitor Current Driver |
| 中文描述： | 白光LED的自適應(yīng)1.5X/1X開關(guān)電容電流驅(qū)動器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 521K |
| 代理商： | LM27952 |
Connection Diagram
LM27952
14-pin No-Pullback Leadless Leadframe Package (LLP-14)
4mm x 3mm x 0.8mm
NS Package Number SDA14A
20148002
Pin Description
Pin
1
2
3
4
5
6
7
8
Name
C2+
V
OUT
C1+
D4
D3
D2
D1
I
SET
Description
Flying Capacitor C2 Connection
Pre-Regulated Charge Pump Output
Flying Capacitor C1 Connection
Regulated Current Sink Input.
Regulated Current Sink Input.
Regulated Current Sink Input.
Regulated Current Sink Input.
Current Set Input. Placing a resistor (R
SET
) between this pin and GND sets
the LED current for all the LEDs. LED Current = 200 x (1.25V ÷ R
SET
).
Enable Logic Input Pin. Logic Low = Shut Down, Logic High = Enabled. There
is a 150k
(typ.) resistor connected internally between the EN pin and GND.
Current Sink Modulation Logic Input Pin. Logic Low = Off, Logic High = On.
Applying a Pulse Width Modulated (PWM) signal to this pin allows the
regulated current sinks to be modulated without shutting down the internal
Charge Pump and the V
OUT
node.
Input Supply Range: 3.0V to 5.5V.
Flying Capacitor C2 Connection.
Power Supply Ground Connection.
Flying Capacitor C1 Connection.
9
EN
10
PWM
11
12
13
14
V
IN
C2-
GND
C1-
Ordering Information
Order Number
Package Description
Package Marking
Supplied as Tape and Reel
(Units)
1000
4500
LM27952SD
LM27952SDX
No-Pullback
LLP-14
XXXXX
YYYYY = D005B
L
www.national.com
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM27952SD | White LED Adaptive 1.5X/1X Switched Capacitor Current Driver |
| LM27952SDX | White LED Adaptive 1.5X/1X Switched Capacitor Current Driver |
| LM27961 | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| LM27961TL | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
| LM27961TLX | Dual-Display White LED Driver with 3/2x Switched Capacitor Boost |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM27952SD | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM27952SD | 制造商:Texas Instruments 功能描述:LED DRIVER, SW CAP, POWERWISE, LLP-14 |
| LM27952SD/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM27952SDX | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LM27952SDX/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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