LM3552SD/NOPB National Semiconductor, LM3552SD/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM3552SD/NOPB
• Description: IC LED DRIVER PHOTO FLASH 14-LLP
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Photo Flash LEDr

Specifications of LM3552SD/NOPB

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Type - Secondary: White LED
• Frequency: 900kHz ~ 1.6MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 10.6 V ~ 12.4 V
• Mounting Type: Surface Mount
• Package / Case: 14-LLP
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 93%
• For Use With: LM3552SDEV - BOARD EVALUATION LM3552SD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM3552SD; LM3552SDNOPB; LM3552SDNOPBTR; LM3552SDNOPBTR; LM3552SDTR

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Connection Diagram
Pin Descriptions
Ordering Information
1,7,DAP
Order Number
Pin
LM3551SDX
LM3552SDX
13
10
12
11
14
9
8
3
5
4
2
6
LM3551SD
LM3552SD
SD(LM3551)
EN(LM3552)
FET-T
FET-F
AGND
Name
OVP
GND
FTO
SW
T/F
V
SS
FB
V
IN
C
Input Voltage. Input range: 2.7V to 5.5V.
TORCH/FLASH Pin. Low = Torch Mode, High = Flash Mode
Switch Pin
Over Voltage Protection Pin
Compensation network connection. Connected to the output of the voltage error amplifier.
Shutdown pin logic input. High = Shutdown, Low = Enabled
Enable pin logic input. High = Enabled, Low = Shutdown
Flash Timeout. External capacitor determines max. duration allowed flash pulse
Soft Start Pin
Feedback Pin
Torch FET Drain
Flash FET Drain
Ground
Analog Ground. Connect the ground of the compensation components, C
AGND. AGND must be connected to the GND pin through a low impedance connection.
SD / EN
SD
SD
EN
EN
NS Package Number SDA14B
14 Pin Dual LLP Package
Package Marking
2
L3551SD
L3551SD
L3552SD
L3552SD
Function
1000 units, Tape-and-Reel
4500 units, Tape-and-Reel
1000 units, Tape-and-Reel
4500 units, Tape-and-Reel
Supplied As
FTO
and soft start cap to
20151202