LM3553 Datasheet, PDF (2/26 Pages) National Semiconductor (TI) – 1.2A Dual Flash LED Driver System with I2C Compatible

LM3553
SNVS414B – FEBRUARY 2008 – REVISED MAY 2013
Connection Diagram
12 Pin 3mm x 3mm WSON Package
DQB0012A
1
12
2
Die-Attach
11
3 Pad (DAP) 10
4
GND
9
5
8
6
7
12
1
11
Die-Attach
2
10 Pad (DAP) 3
9
GND
4
8
5
7
6
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Pin
4
5
6
2, 11
DAP
1
3
8
10
9
7
12
Name
V_IN
SW
OVP
D1, D2
GND
I_SET
F_EN
SCL
SDA
VIO
TX
M/F
Top View
Bottom View
PIN DESCRIPTIONS
Function
Input Voltage. Input range: 2.7V to 5.5V.
Switch Pin
Over Voltage Protection Pin
Regulated current sink inputs
Ground
Current sense input. Connect a 1% 16.5kΩ resistor to ground to set the full scale LED current.
Flash enable pin.
Serial clock pin.
Serial data I/O pin.
Digital Reference Voltage level input pin.
RF PA synchronization control pin. High = Forced Torch mode.
Hardware RESET or General purpose I/O. Function set through Multi-Function Control Register
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.
Absolute Maximum Ratings ^(1)(2)(3)
V_IN pin: Voltage to GND
SW, OVP pin: Voltage to GND
D1, D2 pins: Voltage to GND
VIO, SCL, SDA
TX, FEN, M/F
Continuous Power Dissipation ⁽⁴⁾
Junction Temperature (T_{J-MAX )}
Storage Temperature Range
Maximum Lead Temperature (Soldering)
ESD Rating⁽⁶⁾
Human Body Model
-0.3V to 6V
-0.3V to 25V
-0.3V to 25V
-0.3V to 6V
-0.3V to 6V
Internally Limited
150°C
-65°C to +150
(5)
2.5kV
(1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
(2) All voltages are with respect to the potential at the GND pin.
(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(4) Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T_J=140ºC (typ.) and
disengages at T_J=120ºC (typ.).
(5) For detailed soldering specifications and information, please refer to Texas Instruments Application Note: AN-1187 SNOA401 for
Recommended Soldering Profiles.
(6) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. (MIL-STD-883 3015.7)
2
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