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LM2758TLX Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM2758TLX
Descripción Electrónicos  Switched Capacitor Flash LED Driver in micro SMD
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2758TLX Datasheet(HTML) 2 Page - National Semiconductor (TI)

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Connection Diagram
12-Bump Thin Micro SMD
1.514mm x 1.996mm x 0.6mm
NS Package Number TLA12
30045302
Pin Descriptions
Pin
Name
Description
C1
V
IN
Supply voltage connection.
B2
CP
OUT
Charge pump regulated output. A 2.2 µF ceramic capacitor is required from CP
OUT to
GND. Connect flash LED anode to this pin.
B1
C1+
Flying capacitor pins. A 1 µF ceramic capacitor should be connected from C1+ to C1−
and from C2+ to C2−.
D2
C1−
C2
C2+
D1
C2−
A2
SGND
Analog and control ground for charge pump. This pin should be connected directly to a
low impedance ground plane.
C3
LED−
Regulated current source output. Connect flash LED cathode to this pin.
A1
EN1
The EN1 and EN2 pins are used to select the modes (Torch, Indictor, Flash), as well as
to put the part into Shutdown mode.
B3
EN2
A3
I
SET
LED current programming resistor pin. A resistor connected between this pin and GND
are used to set Torch, Flash and Indicator currents.
D3
PGND
Power ground for the charge pump and the current source. This pin should be connected
directly to a low impedance ground plane.
Ordering Information
Order Number
Supplied as Tape and Reel (Units)
LM2758TL
250 units, tape and reel
LM2758TLX
3000 units, tape and reel
www.national.com
2


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