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AMS3131のメーカーはAMSです、この部品の機能は「3A Fast Transient Linear Regulator」です。 |
部品番号 | AMS3131 |
| |
部品説明 | 3A Fast Transient Linear Regulator | ||
メーカ | AMS | ||
ロゴ | |||
このページの下部にプレビューとAMS3131ダウンロード(pdfファイル)リンクがあります。 Total 9 pages
General Description
The AMS3131 is a high performance linear regulator
with very low dropout voltage and excellent transient
response. It is designed to operate with wide input
voltage range of 1.5 – 7Volts making it ideal for two
step conversion while maintaining high efficiency for
many power sensitive applications. The device is
capable of supplying 3A of output current with a
typical dropout voltage of 700mV at 3A. The product
is available only as a fixed output voltage option.
The product includes complete short-circuit and
thermal protection. The combination of these two
internal protection circuits gives the device a
comprehensive safety system to safe guard against
extreme adverse operating conditions.
The AMS3131 is available in both 3-pin TO-220 and
TO-263 packages, and it is rated for -40°C to
+125°C temperature range.
Typical Application
AMS3131
3A Fast Transient Linear Regulator
Features
• VIN range: 1.5 – 7V
• Fixed output voltage as low as 0.6V
• 3A maximum output current
• 700mV typical dropout voltage at 3A
• Low self noise
• 125µA typical supply current
• PSRR >40dB at 10KHz
• Stable with Electrolytic, Tantalum or
Ceramic capacitors
• Current Limit protection
• Over-Temperature Shutdown
• -40 to +125°C temperature range
• Available in a 3-pin TO-220 and TO-263
surface mount packages
• RoHS & WEEE compliant
Applications
• Set-top Box
• DVD, Blue-ray DVD writers
• LCD TVs and LCD monitors
• Battery Powered Equipment
• Infotainment
• Wireless & RF Applications
• High Efficiency “Green” Laptops & notebook
VIN= 3.3V
CIN=10μF
VIN VOUT
AMS3131
VOUT=1.8V
COUT=22μF
GND
02/11/2010
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Fax (925) 443-0723
1 Page AMS3131
Absolute Maximum Ratings (1)
Maximum Input Supply Voltage (VIN)……..…....….… -0.3V to 15V
Storage Temperature Range……………................ -65⁰C to 150⁰C
Lead Temperature…………………..……….….…………..… 260⁰C
Junction Temperature………...……………..…..…………… 125⁰C
3A Fast Transient Linear Regulator
Recommended Operating Conditions (2)
Input Voltage………………………….……….……...….. 1.5V to 7V
Ambient Operating Temperature……...………..… -40⁰C to 125⁰C
Thermal Information
TO-220 3-pin θJA .. …………...………………………..…...50⁰C/W
TO-263 3-pin θJA (3) ……………………………….…………30⁰C/W
Electrical Characteristics
Unless otherwise noted: VIN=3.3V; VOUT=1.8V; CIN=10 µF ; COUT=22µF; -40⁰C≤TA=TJ≤85⁰C; TJ(Max.)= 125°C; Typical values are TA=25°C
Parameter
Output Voltage Accuracy
Maximum Output Current
Load Regulation
Line Regulation
Supply Current
Current Limit
Dropout Voltage
PSRR
Output Noise Voltage
Thermal Shutdown
Thermal Shutdown Hysteresis
Symbol
VOUT
IOUT_Max
ISUP
ILIM
VDO
ΔVOUT/ΔVIN
en
TSD
TSD_HYS
Conditions
IOUT= 0 – 3A
VIN=3.0 – 7.0V; IOUT=100mA
VIN=3.3V, Io=0A
IOUT=0.1A; VOUT=95% of VOUT(NOM)
IOUT=1A; VOUT=95% of VOUT(NOM)
IOUT=2A; VOUT=95% of VOUT(NOM)
IOUT=3A; VOUT=95% of VOUT(NOM)
F=10KHz Io=20mA
BW= 100Hz –100 KHz
COUT = 22µF
IOUT = 2.75A
Min.
-3
2
Typ. Max.
3
0.1
0.1
0.6 1
6
60
220
420
700
40
Units
%
A
%
%
mA
A
mV
dB
125 µV(rms)
145 °C
15 °C
Notes:
1.
2.
3.
Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device.
Measured on approximately 1” square of 1 oz. copper.
With package soldering to 0.5in2 copper area over backside ground plane or internal power plane θJA can vary from 20°C/W to >40°C/W depending on
mounting technique. The thermal resistance Junction to Case is 45⁰C/W. Total power dissipation for the switching regulator and the LDO should be taken
in consideration when calculating the output current capability of each regulator
02/11/2010
www.advanced-monolithic.com
3
Phone (925) 443-0722
Fax (925) 443-0723
3Pages Functional Block Diagram
AMS3131
3A Fast Transient Linear Regulator
VIN
Enable
Current Limit
-
Error
Amp
+
Over Temperature
VREF= 0.6V
R1
R2
VOUT
GND
Figure 1: Block Diagram of AMS 3131 3-Pin TO-220 (T) / TO-263 (M)
02/11/2010
www.advanced-monolithic.com
6
Phone (925) 443-0722
Fax (925) 443-0723
6 Page | |||
ページ | 合計 : 9 ページ | ||
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部品番号 | 部品説明 | メーカ |
AMS3131 | 3A Fast Transient Linear Regulator | AMS |
AMS3132 | 3A Fast Transient Linear Regulator | AMS |