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LM3551 bảng dữ liệu(PDF) 2 Page - Texas Instruments

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LM3551 bảng dữ liệu(HTML) 2 Page - Texas Instruments

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Die-Attach
Pad(DAP)
GND
11
10
9
12
13
8
14
4
5
6
3
2
7
1
Die-Attach
Pad(DAP)
GND
11
10
9
12
13
8
14
4
5
6
3
2
7
1
LM3551, LM3552
SNVS371C – AUGUST 2005 – REVISED MARCH 2011
www.ti.com
Connection Diagram
14-Pin WSON Package
Figure 1. Package Number NHL0014B
PIN DESCRIPTIONS
Pin
Name
Function
9
VIN
Input Voltage. Input range: 2.7V to 5.5V.
13
T/F
TORCH/FLASH Pin. Low = Torch Mode, High = Flash Mode
8
SW
Switch Pin
10
OVP
Over Voltage Protection Pin
3
VC
Compensation network connection. Connected to the output of the voltage error amplifier.
SD(LM3551)
Shutdown pin logic input. High = Shutdown, Low = Enabled
5
EN(LM3552)
Enable pin logic input. High = Enabled, Low = Shutdown
12
FTO
Flash Timeout. External capacitor determines max. duration allowed flash pulse
11
SS
Soft Start Pin
4
FB
Feedback Pin
14
FET-T
Torch FET Drain
2
FET-F
Flash FET Drain
1,7,DAP
GND
Ground
Analog Ground. Connect the ground of the compensation components, CFTO and soft start cap to
6
AGND
AGND. AGND must be connected to the GND pin through a low impedance connection.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
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Copyright © 2005–2011, Texas Instruments Incorporated
Product Folder Links: LM3551 LM3552


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