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PDF IT76620M Data sheet ( Hoja de datos )
| Número de pieza | IT76620M | |
| Descripción | 23V/2A High Efficiency Synchronous Rectified Step-Down DC/DC Converter | |
| Fabricantes | M3TEK | |
| Logotipo |  |
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M3TEK
IT76620M
23V/2A High Efficiency Synchronous Rectified Step-Down DC/DC Converter
DESCRIPTION
The IT76620M is a high efficiency synchronous
step-down DC/DC converter series with 2A
continuous output current supplied. Included on
the substrate with the features listed is a high
performance trans-conductance error amplifier that
provides tight voltage regulation and accuracy
under transient conditions. A built-in Under Voltage
Lockout (UVLO) circuit is provided to prevent
start-up until the input voltage reaches to 4.5V. In
addition, it features over-current protection and
thermal shutdown. To improve the light load
efficiency, it is designed as the power saving mode
(PSM) to minimize the switching loss by reducing
the switching frequency. The IT76620M is
available in SOP8 package.
FEATURES
Input Voltage Supply Range from 4.5V to 23V
Power Saving Mode (PSM) during the light Load
Operation
High Efficiency up to 93%
Adjustable Output Voltage from 0.925V to 15V
2A Continuous Output Current
330KHz Constant Frequency Operation
Current Mode Operation
Programmable Soft-Start
Over-temperature Protection
Over-current Protection
Input Under Voltage Lockout (UVLO)
10μA Shutdown Current
SOP8 Package
RoHS Compliant (100% Green Available)
APPLICATIONS
Data comm. xDSL CPE Graphics Cards
Set-Top-Box, DVD
Servers/Networking
DSP and FPGA Power Supply
Telecomm Equipments
DC-DC Regulator Modules
LCD Monitor and LCD TV
TYPICAL APPLICATION
Input
4.5 to 23V
Cin
22uF/25V
MLCC
Css
10nF
VIN BS
VSW
EN IT76620M
Cbs
10nF L
10uH
SS
GND
COMP FB
Cs
Cp
Rc
Cout
22uFx2
R1
26.1K
Output
3.3V
Cup
Option
R2
10K
Rev. 0.2
www.m3tekic.com
Figure 1. IT76620M Typical Operating Circuit
M3tekic Confidential
1
1 page  
M3TEK
IT76620M
23V/2A High Efficiency Synchronous Rectified Step-Down DC/DC Converter
TYPICAL PERFORMANCE CHARACTERISTICS
IT76620M application circuit (Figure 1.), TA = +25°C, unless otherwise noted.
Rev. 0.2
www.m3tekic.com
M3tekic Confidential
5
5 Page 
M3TEK
IT76620M
23V/2A High Efficiency Synchronous Rectified Step-Down DC/DC Converter
IT76620M EVB Schematic
Application: Typical Application Circuit
Qty
3
1
1
1
4
4
1
1
Ref
C1, C2
C6
C5
L1
R1, R2, R3, R4
C8, C9, C10, C11
C7
U1(IT76620M)
EVB BOM List
Description
Ceramic Capacitor X5R 16V
Murata-part number:GRM32ER61C226KE20L
Ceramic Capacitor X5R 25V
Murata-part number:GRM32ER61E226ME15L
Ceramic Capacitor
Inductor, Rated Current 3.5A
WE-part number: 744 066 100---10uH
Resistor, ±1%
Ceramic Capacitor
C7 value is adjustable for the ESR of Cout
Step-Down DC/DC Converter
Package
1206
1206
0603
SMD
0603
0603
0603
SOP8
VOUT (V) R1(KΩ) R3(KΩ) C8(nF) C7(pF) C12(pF) L (μH)
12
120
60.4
3.3
18
NC 10
5
44.2
30.9
3.3
33
NC 10
3.3 26.1 21 3.3 47
NC 10
2.5 17.4 16 3.3 68
NC 10
1.8 9.53 4.7 8.2 100 NC 10
1.2 3 3.9 8.2 150 NC 10
1 0.82 3 8.2 180 NC 10
COUT (μF)
22 x 2 (X5R 16V)
22 x 2 (X5R 16V)
22 x 2 (X5R 16V)
22 x 2 (X5R 16V)
22 x 2 (X5R 16V)
22 x 2 (X5R 16V)
22 x 2 (X5R 16V)
Rev. 0.2
www.m3tekic.com
M3tekic Confidential
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet IT76620M.PDF ] | |
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