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LM2751SD-B Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce LM2751SD-B
Description  LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver
Download  19 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

LM2751SD-B Fiches technique(HTML) 1 Page - Texas Instruments

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INPUT VOLTAGE (V)
Typical 2x Only Pump
VOUT = 4.5V
LM2751 2x, 1.5x Pump
VOUT = 4.5V
VOUT = 5.0V
VOUT = 5.0V
LM2751
VIN
C2+
C2-
2.2 µF
1 µF
VOUT
2.2 µF
C1+
C1-
1 µF
Capacitors:
1 µF - TDK C1608X7R1A105K
2.2 µF - TDK C2012X5R1A225K
VIN = 2.8V - 5.5V
3
2
9
10
7
8
1
EN
6
GND
VOUT = 4.5V, or 5.0V
CS0
4
CS1
5
D1
DX
R
R
COUT
CIN
C2
C1
LM2751
www.ti.com
SNVS299B – APRIL 2005 – REVISED MAY 2013
LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver
Check for Samples: LM2751
1
FEATURES
APPLICATIONS
2
Regulated Output Options: 4.5V, 5.0V
White LED Display Backlights
Output Voltage Regulated Within 3%
White LED Keypad Backlights
Peak Efficiency Over 90%
General Purpose 2×, 1.5× Regulated Charge
Pump
150mA (4.5V) or 80mA (5.0V) Output Current
Capability
DESCRIPTION
Input Voltage Range: 2.8V to 5.5V
The LM2751 is a constant frequency switched
Low Input and Output Voltage Ripple
capacitor charge pump with regulated output voltage
<1µA Typical Shutdown Current
options of 4.5V, and 5.0V. Over the input voltage
range of 2.8V to 5.5V the LM2751 provides up to
Small Solution Size - NO INDUCTOR
150mA of output current and requires only four low-
Programmable 725kHz, 300kHz, 37kHz, or
cost ceramic capacitors.
9.5kHz Switching Frequencies
10-pin SON No-Pullback Package: 3mm × 3mm
× 0.8mm
Typical Application Circuit
LM2751 2x/1.5x Efficiency vs.
2x Charge Pump Efficiency
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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