LM2758TLX/NOPB National Semiconductor, LM2758TLX/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM2758TLX/NOPB
• Description: IC LED DRIVER PHOTO FLASH 12USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: Photo Flash LEDr

Specifications of LM2758TLX/NOPB

• Constant Current: Yes
• Topology: Switched Capacitor (Charge Pump)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Frequency: 800kHz ~ 1.5MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 2.7 V ~ 5.3 V
• Mounting Type: Surface Mount
• Package / Case: 12-MicroSMD
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 700mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM2758TLX

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