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AMS4123

Description
RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603
CategoryPassive components   
File Size585KB,18 Pages
ManufacturerAMS
Websitehttps://ams.com/zh
Download Datasheet Parametric Compare View All

AMS4123 Overview

RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603

AMS4123 Parametric

Parameter NameAttribute value
Maximum operating temperature155 Cel
Minimum operating temperature-55 Cel
Processing package descriptionCHIP, HALOGEN FREE AND ROHS COMPLIANT
Lead-freeYes
EU RoHS regulationsYes
stateACTIVE
packaging shapeRECTANGULAR PACKAGE
Terminal shapeWRAPAROUND
terminal coatingMATTE TIN OVER NICKEL
Installation featuresSURFACE MOUNT
Rated temperature70 Cel
Manufacturer SeriesCRCW
size code0603
deviation5 %
resistance10 ohm
CraftsmanshipMETAL GLAZE/THICK FILM
Resistor typeRESISTOR
Operating Voltage75 V
Temperature Coefficient200
Rated power P0.1000 W
AMS4123
3A 20V Step-Down Converter + 1A LDO
General Description
The AMS4123 combines a 3A Step-Down converter
with a 1A LDO in a single SO-8 exposed paddle
package. Both the LDO and Step-Down converter
are low ESR, ceramic capacitor output, stable. The
Step-Down converter is internally compensated with
internal soft-start to minimize the number of external
components. An Enable pin provides built-in
externally programmable power-up sequencing. The
Step-Down converter enable threshold is 2.0V and
the LDO enable threshold is 2.5V. It also has hiccup
current limit and thermal protection. Thermal
protection shuts down both the Step-Down converter
and LDO when the die temperature exceeds 135°C.
Both regulators are adjustable using a 0.6V
reference for low output voltage settings. The LDO
has options for fixed output voltages from 0.6V to 5V
in 100mV steps. The LDO external input can be
powered from the Step-Down converter output, for
improved efficiency, or from any voltage source that
is less than or equal to the device supply voltage
(Vin). With a dropout voltage of less than 350mV at
1A, the AMS4123 LDO makes the perfect solution
for a low noise 1.8V power source developed from
2.5V Step-Down converter output. The AMS4123 is
a complete solution for LCD TV power requirements
when combined with the AMS4122 (2A Dual
Switching Regulator in SO-8).
Features
Step-Down Converter + LDO in SO-8EP
Internally Compensated
Up to 95% Efficiency
Low ESR Ceramic Output Capacitor Stable
Soft Start
Under-Voltage Lockout
Dual Threshold Enable
300 kHz Switching Frequency
Hiccup Current Limit
Over-Temperature Shutdown
Ultra-Low Dropout LDO 350mV @ 1A
Up to 3A Step-Down Output Current
Up to 1A LDO Output Current
Excellent Light Load Efficiency
Applications
Audio Power Amplifiers
Portable (Notebook) Computers
Point of Regulation for High Performance
Electronics
Consumer Electronics
DVD, Blue-ray DVD writers
LCD TVs and LCD monitors
Distributed Power Systems
Battery Chargers
Pre-Regulator for Linear Regulation
Typical Application
Vin 4.5V to 20V
U1
3
2.5V
7
C1
10uF
1.8V at 1A
8
R1
20.0k
C3
2.2uF
R2
10.0k
6
LDOout FB SW
FB LDO
Enable
EN
5
4
R3
10.0k
R4
31.6k
C8
4.7nF
R1 and R4 Voltage Options
1.8V 20.0k
2.5V 31.6k
3.3V 45.3k
5.0V 73.2k
LDOin
BST
2
D1
B340LB
C2
22uF
C9
100uF
Vin
AMS4123
SW
1
C5
220nF
L1
10uH
2.5V at 2A
SW out
3/5/2010
www.advanced-monolithic.com
1
Phone (925) 443-0722
Fax (925) 443-0723

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Description RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603 VISHAY SPRAGUE - 293D226X9035E2TE3 - CAPACITOR TANT; 22UF 35V; 0.6 OHM; 0.1; 7343-43 RESISTOR, METAL GLAZE/THICK FILM, 0.1 W, 5 %, 200 ppm, 10 ohm, SURFACE MOUNT, 0603
Maximum operating temperature 155 Cel 155 Cel 155 Cel 155 Cel 155 Cel 155 Cel 155 Cel 155 Cel - 155 Cel
Minimum operating temperature -55 Cel -55 Cel -55 Cel -55 Cel -55 Cel -55 Cel -55 Cel -55 Cel - -55 Cel
Processing package description CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT CHIP, HALOGEN FREE AND ROHS COMPLIANT - CHIP, HALOGEN FREE AND ROHS COMPLIANT
Lead-free Yes Yes Yes Yes Yes Yes Yes Yes - Yes
EU RoHS regulations Yes Yes Yes Yes Yes Yes Yes Yes - Yes
state ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE - ACTIVE
packaging shape RECTANGULAR PACKAGE RECTANGULAR PACKAGE RECTANGULAR PACKAGE RECTANGULAR PACKAGE RECTANGULAR PACKAGE RECTANGULAR PACKAGE RECTANGULAR PACKAGE RECTANGULAR PACKAGE - RECTANGULAR PACKAGE
Terminal shape WRAPAROUND WRAPAROUND WRAPAROUND WRAPAROUND WRAPAROUND WRAPAROUND WRAPAROUND WRAPAROUND - WRAPAROUND
terminal coating MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL MATTE TIN OVER NICKEL - MATTE TIN OVER NICKEL
Installation features SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT SURFACE MOUNT - SURFACE MOUNT
Rated temperature 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel - 70 Cel
Manufacturer Series CRCW CRCW CRCW CRCW CRCW CRCW CRCW CRCW - CRCW
size code 0603 0603 0603 0603 0603 0603 0603 0603 - 0603
deviation 5 % 5 % 5 % 5 % 5 % 5 % 5 % 5 % - 5 %
resistance 10 ohm 10 ohm 10 ohm 10 ohm 10 ohm 10 ohm 10 ohm 10 ohm - 10 ohm
Craftsmanship METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM METAL GLAZE/THICK FILM - METAL GLAZE/THICK FILM
Resistor type RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR RESISTOR - RESISTOR
Operating Voltage 75 V 75 V 75 V 75 V 75 V 75 V 75 V 75 V - 75 V
Temperature Coefficient 200 200 200 200 200 200 200 200 - 200
Rated power P 0.1000 W 0.1000 W 0.1000 W 0.1000 W 0.1000 W 0.1000 W 0.1000 W 0.1000 W - 0.1000 W
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