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LM2743MTC/NOPB Datasheet(PDF) 30 Page - Texas Instruments

Part # LM2743MTC/NOPB
Description  LM2743 2.2-V to 16-V Input, voltage mode, synchronous buck controller with tracking
PDF  44 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM2743MTC/NOPB Datasheet(HTML) 30 Page - Texas Instruments

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HG
BOOT
ISEN
LG
PGND
FB
VCC
SD
PWGD
FREQ
SS/TRACK
SGND
EAO
PGND
VCC = 5V
VIN = 5V
VOUT = 2.5V@2A
RFB2
CC2
RC1
RCS
CSS
RFADJ
RCC
CCC
D1
CBOOT
Q1
CIN1,2
L1
+
CC1
RFB1
CO1,2
LM2743
RC2
CC3
RPULL-UP
+
30
LM2743
SNVS276I – APRIL 2004 – REVISED FEBRUARY 2019
www.ti.com
Product Folder Links: LM2743
Submit Documentation Feedback
Copyright © 2004–2019, Texas Instruments Incorporated
Typical Applications (continued)
8.2.2.3 Bill of Materials
Table 1. Bill of Materials
PART
PART NUMBER
TYPE
PACKAGE
DESCRIPTION
VENDOR
U1
LM2743
Synchronous
Controller
TSSOP-14
TI
Q1
FDS6898A
Dual N-MOSFET
SOIC-8
20 V, 10 m
Ω at 4.5 V,
16 nC
Fairchild
D1
MBR0520LTI
Schottky Diode
SOD-123
L1
DO3316P-472
Inductor
4.7 µH, 4.8 Arms, 18
m
Ω
Coilcraft
CIN1
16SP100M
Aluminum Electrolytic
10mm x 6mm
100 µF, 16 V, 2.89
Arms
Sanyo
CO1
6SP220M
Aluminum Electrolytic
10mm x 6mm
220 µF, 6.3 V, 3.1
Arms
Sanyo
CCC, CBOOT,
CIN2, CO2
VJ1206Y104KXXA
Capacitor
1206
0.1 µF, 10%
Vishay
CC3
VJ0805Y332KXXA
Capacitor
805
3300 pF, 10%
Vishay
CSS
VJ0805A123KXAA
Capacitor
805
12 nF, 10%
Vishay
CC2
VJ0805A821KXAA
Capacitor
805
820 pF 10%
Vishay
CC1
VJ0805A220KXAA
Capacitor
805
22 pF, 10%
Vishay
RFB2
CRCW08051002F
Resistor
805
10.0 k
Ω 1%
Vishay
RFB1
CRCW08054991F
Resistor
805
4.99 k
Ω1%
Vishay
RFADJ
CRCW08051103F
Resistor
805
110 k
Ω 1%
Vishay
RC2
CRCW08052101F
Resistor
805
2.1 k
Ω 1%
Vishay
RCS
CRCW08052101F
Resistor
805
2.1 k
Ω 1%
Vishay
RCC
CRCW080510R0F
Resistor
805
10.0
Ω 1%
Vishay
RC1
CRCW08055492F
Resistor
805
54.9 k
Ω 1%
Vishay
RPULL-UP
CRCW08051003J
Resistor
805
100 k
Ω 5%
Vishay
8.2.3 Example Circuit 2
Figure 42. 5 V to 2.5 V at 2A, fSW = 300kHz
8.2.3.1 Design Requirements
This design converts 5 V (VIN) to 2.5 V (VOUT) at a maximum load of 2 A, with a switching frequency of 300 kHz.



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