參數(shù)資料
型號(hào)： LM3502SQX-25
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 顯示驅(qū)動(dòng)器
英文描述： Step-Up Converter for White LED Applications
中文描述： LED DISPLAY DRIVER, QCC16
封裝： 1MM HEIGHT, LLP-16
文件頁(yè)數(shù)： 2/18頁(yè)
文件大小： 928K
代理商： LM3502SQX-25
Connection Diagrams
10-Bump Thin MicroSMD
Package (TLP10)
16-Lead Thin Leadless Leadframe
Package (SQA16A)
20131702
TOP VIEW
20131703
TOP VIEW
Pin Descriptions/Functions
Bump #
A1
B1
C1
Pin #
9
7
6
Name
Cntrl
Fb
V
OUT2
Description
Shutdown Control Connection
Feedback Voltage Connection
Drain Connections of The NMOS and PMOS Field Effect Transistor (FET) Switches
(
Figure 2
: N2 and P1)
Over-Voltage Protection (OVP) and Source Connection of The PMOS FET Switch
(
Figure 2
: P1)
Drain Connection of The Power NMOS Switch (
Figure 2
: N1)
Power Ground Connection
Analog Ground Connection
Supply or Input Voltage Connection
NMOS FET Switch Control Connection
PMOS FET Switch Control Connection
No Connection
No Connection
No Connection
No Connection
Die Attach Pad (DAP), must be soldered to the printed circuit board’s ground plane for
enhanced thermal dissipation.
D1
4
V
OUT1
D2
D3
C3
B3
A3
A2
2 and 3
15 and 16
14
13
12
10
1
5
8
11
DAP
Sw
PGND
AGND
V
IN
En2
En1
NC
NC
NC
NC
DAP
Cntrl (Bump A1):
Shutdown control pin. When V
Cntrl
is
≥
1.4V, the LM3502 is enabled or ON. When V
is
0.3V,
the LM3502 will enter into shutdown mode operation. The
LM3502 has an internal pull down resistor on the Cntrl pin,
thus the device is normally in the off state or shutdown mode
of operation.
Fb (Bump B1):
Output voltage feedback connection. The
white LED string network current is set/programmed using a
resistor from this pin to ground.
V
OUT2
(Bump C1):
Drain connections of the internal PMOS
and NMOS FET switches. (
Figure 2
: P1 and N2). It is rec-
ommended to connect 100nF at V
OUT2
for the LM3502-35V
and LM3502-44 versions if V
OUT2
V
OUT1
(Bump D1):
Source connection of the internal PMOS
FET switch (
Figure 2
: P1) and OVP sensing node. The
output capacitor must be connected as close to the device
as possible, between the V
pin and ground plane. Also
connect the Schottky diode as close as possible to the
V
OUT1
pin to minimize trace resistance and EMI radiation.
Sw (Bump D2):
Drain connection of the internal power
NMOS FET switch. (
Figure 2
: N1) Minimize the metal trace
length and maximize the metal trace width connected to this
pin to reduce EMI radiation and trace resistance.
PGND (Bump D3):
Power ground pin. Connect directly to
the ground plane.
AGND (Bump C3):
Analog ground pin. Connect the analog
ground pin directly to the PGND pin.
V
IN
(Bump B3):
Supply or input voltage connection pin. The
C
capacitor should be as close to the device as possible,
between the V
IN
pin and ground plane.
En2 (Bump A3):
Enable pin for the internal NMOS FET
switch (
Figure 2
: N2) during device operation. When V
En2
is
L
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相關(guān)PDF資料
PDF描述
LM3502ITL-35 GT 4C 4#16S SKT PLUG RTANG
LM3502ITL-44 GT 5C 5#16S PIN PLUG
LM3502ITLX-25 Step-Up Converter for White LED Applications
LM3502ITLX-16 Step-Up Converter for White LED Applications
LM3502ITL-25 Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:55; Connector Shell Size:32; Connecting Termination:Crimp; Circular Shell Style:Right Angle Plug; Body Style:Right Angle
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM3502SQX-25/NOPB 功能描述:LED照明驅(qū)動(dòng)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
LM3502SQX-35 功能描述:LED照明驅(qū)動(dòng)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
LM3502SQX-35/NOPB 功能描述:LED照明驅(qū)動(dòng)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
LM3502SQX-44 功能描述:LED照明驅(qū)動(dòng)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
LM3502SQX-44/NOPB 功能描述:LED照明驅(qū)動(dòng)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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