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LM2611 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce LM2611
Description  Cuk Converter
Download  22 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM2611 Fiches technique(HTML) 1 Page - Texas Instruments

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CIN: TAIYO YUDEN X5R JMK325BJ226MM
CCUK: TAIYO YUDEN X5R EMK316BJ105MF
COUT: TAIYO YUDEN X5R JMK325BJ226MM
D: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR32-150
L2: SUMIDA CR32-470
CCUK
1 PF
COUT
22 PF
L2
47 PH
VIN
5V
D
CFF
330 pF
RFB1
29.4k
RFB2
10k
VIN
SW
NFB
GND
SHDN LM2611A
1
2
3
4
5
CIN
22 PF
L1
15 PH
VOUT - 5V
300 mA
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LM2611
SNOS965J – JUNE 2001 – REVISED DECEMBER 2015
LM2611 1.4-MHz Cuk Converter
1 Features
3 Description
The LM2611 is a current mode, PWM inverting
1
1.4-MHz Switching Frequency
switching regulator. Operating from a 2.7-V to 4-V
Low RDS(ON) DMOS FET
supply, it is capable of producing a regulated
1-mVp-p Output Ripple
negative output voltage of up to
−(36 VIN(MAX)). The
LM2611 utilizes an input and output inductor, which
−5 V at 300 mA From 5-V Input
enables low voltage ripple and RMS current on both
Better Regulation Than a Charge Pump
the input and the output. With a switching frequency
Uses Tiny Capacitors and Inductors
of 1.4 MHz, the inductors and output capacitor can be
physically small and low cost. High efficiency is
Wide Input Range: 2.7 V to 14 V
achieved through the use of a low RDS(ON) FET.
Low Shutdown Current: <1 µA
The LM2611 features a shutdown pin, which can be
5-Pin SOT-23 Package
activated when the part is not needed to lower the Iq
and save battery life. A negative feedback (NFB) pin
2 Applications
provides a simple method of setting the output
MR Head Bias
voltage, using just two resistors. Cycle-by-cycle
Digital Camera CCD Bias
current limiting and internal compensation further
simplify the use of the LM2611.
LCD Bias
The LM2611 is available as a small 5-pin, SOT-23
GaAs FET Bias
package and comes in two grades. Grade A has a
Positive to Negative Conversion
1.2-A current limit and 0.5-
Ω RDS(ON), and Grade B
has a 0.9-A current limit and 0.7-
Ω RDS(ON).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM2611
SOT-23 (5)
1.60 mm × 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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