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Linear Regulator. AMS3120 Datasheet

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Linear Regulator. AMS3120 Datasheet






AMS3120 Regulator. Datasheet pdf. Equivalent




AMS3120 Regulator. Datasheet pdf. Equivalent





Part

AMS3120

Description

2A Fast Transient Linear Regulator



Feature


General Description The AMS3120 is a hig h performance linear regulator with ver y low dropout voltage and excellent tra nsient response. It is designed to oper ate with wide input voltage range of 1. 5 – 7Volts making it ideal for two st ep conversion while maintaining high ef ficiency for many power sensitive appli cations. The device is capable of suppl ying 2A of output cu.
Manufacture

AMS

Datasheet
Download AMS3120 Datasheet


AMS AMS3120

AMS3120; rrent with a typical dropout voltage of 550mV at 2A. The product is available i n either fixed or adjustable output vol tage. The linear regulator has been opt imized for noise sensitive applications . The device includes an Enable pin for electrical on/off of the regulator. Fo rcing the Enable pin to logic low shuts down the LDO and reduces the supply cu rrent to less than.


AMS AMS3120

1µA. The product includes complete sho rt-circuit and thermal protection. The combination of these two internal prote ction circuits gives the device a compr ehensive safety system to safe guard ag ainst extreme adverse operating conditi ons. The AMS3120 is available in a ther mally enhanced SOIC-8 EDP package, and it is rated for -40°C to +125°C tempe rature range. Typical.


AMS AMS3120

Application AMS3120 2A Fast Transient Linear Regulator Features • VIN range : 1.5 – 7V • Fixed and Adjustable o utput voltage as low as 0.6V • 2A max imum output current • 550mV typical d ropout voltage at 2A • Low self noise • Optional Power Good (PG) output Enable (EN) pin for LDO on/off • 12 5µA typical supply current • PSRR >4 0dB at 10KHz • Stable with Electrolytic.

Part

AMS3120

Description

2A Fast Transient Linear Regulator



Feature


General Description The AMS3120 is a hig h performance linear regulator with ver y low dropout voltage and excellent tra nsient response. It is designed to oper ate with wide input voltage range of 1. 5 – 7Volts making it ideal for two st ep conversion while maintaining high ef ficiency for many power sensitive appli cations. The device is capable of suppl ying 2A of output cu.
Manufacture

AMS

Datasheet
Download AMS3120 Datasheet




 AMS3120
General Description
The AMS3120 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 2A of output current with a
typical dropout voltage of 550mV at 2A. The product
is available in either fixed or adjustable output
voltage.
The linear regulator has been optimized for noise
sensitive applications. The device includes an
Enable pin for electrical on/off of the regulator.
Forcing the Enable pin to logic low shuts down the
LDO and reduces the supply current to less than
1µA.
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 AMS3120 is available in a thermally enhanced
SOIC-8 EDP package, and it is rated for -40°C to
+125°C temperature range.
Typical Application
AMS3120
2A Fast Transient Linear Regulator
Features
VIN range: 1.5 – 7V
Fixed and Adjustable output voltage as low
as 0.6V
2A maximum output current
550mV typical dropout voltage at 2A
Low self noise
Optional Power Good (PG) output
Enable (EN) pin for LDO on/off
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
Thermally enhanced SOIC-8 exposed
paddle package
RoHS & WEEE compliant
Applications
Set-top Box
DVD, Blue-ray DVD writers
LCD TVs and LCD monitors
Infotainment
Wireless & RF: applications
Laptops & notebook
VIN= 3.3V
CIN=10μF
VIN VOUT*
AMS3120
EN PG*
ADJ*
GND
VOUT=1.8V
COUT = 22μF
* Optional Power Good, Fixed and Adjustable VOUT are available
02/11/2010
www.advanced-monolithic.com
1
Phone (925) 443-0722
Fax (925) 443-0723




 AMS3120
AMS3120
Pin Description (SO-8EP package)
2A Fast Transient Linear Regulator
Pin #
1
2
3
4
5
6
7
8,9
Symbol
NC
EN
VIN
NC
PG
NC
VOUT
ADJ
NC
GND
Description
No connection
Enable pin. It controls the electrical on/off of the device. When connected to logic
low, the device shuts off and consumes 1µA of current. A logic high will resume
normal operation.
Input supply Voltage. It powers the internal control circuitry and the internal power
switch. Bypass VIN with at ceramic capacitor from this pin to ground.
No Connection
Power Good pin. It is an open collector, active high output that indicates the status
of the output voltage. When output voltage (VOUT) exceeds the PG trip threshold,
the PG pin goes in to a high impedance state. When the device is out of regulation
or shutdown, the PG pin is pulled low. A 10Kto 1Mresistor should be
connected from PG to VOUT.
No Connection
Output Voltage
Provides feedback to error amplifier from the resistive divider that sets the output
voltage.
No Connection
Ground
Pin Configuration
SO-8EP (Top View)
02/11/2010
www.advanced-monolithic.com
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Phone (925) 443-0722
Fax (925) 443-0723




 AMS3120
AMS3120
Absolute Maximum Ratings (1)
Maximum Input Supply Voltage……………..........….… -0.3V to 15V
Enable Voltage (EN)……………....…………...…..…… -0.3V to 15V
Power Good (PG).……………..…..………………….… -0.3V to 15V
Adjustable Voltage (ADJ).…...……………………....…… -0.3V to 3V
Storage Temperature Range……………................. -65C to 150C
Lead Temperature…………………..………….……………..… 260C
Junction Temperature………...………………..…………..…… 125C
2A Fast Transient Linear Regulator
Recommended Operating Conditions (2)
Input Voltage………………………………...….………….. 1.5V to 7V
Ambient Operating Temperature……………….…… -40C to 125C
Thermal Information
8L SOIC EP θJA (3) …………………………....……….….…...45C/W
Electrical Characteristics
Unless otherwise noted: VIN=3.3V; VOUT=1.8V; CIN=10 µF; COUT=22µF; -40CTA=TJ85C; TJ(Max)= 125°C; Typical values are TA= 25°C
Parameter
Output Voltage Accuracy
Adjustable Voltage
Adjustable Pin bias current
Maximum Output Current
Load Regulation
Line Regulation
Supply Current
Shutdown Current
Current Limit
Symbol
VOUT
VADJ
IADJ_Bias
IOUT_Max
ISUP
ISHDN
ILIM
Conditions
Adjustable VOUT only
Adjustable VOUT only
IOUT= 0 – 2A
VIN=3.0 – 7.0V; IOUT=100mA
VIN=3.3V, Io=0A
VIN=3.3V, VEN=0V
IOUT=0.1A; VOUT=90% of VOUT(NOM)
Min.
-3
0.588
2
Typ.
0.6
10
Max.
3
0.612
100
0.1
0.2
0.2 0.5
<1 3
2.5
85
Units
%
V
nA
A
%
%
mA
µA
A
Dropout Voltage
IOUT=0.5A; VOUT=90% of VOUT(NOM)
180
VDO mV
IOUT=1A; VOUT=90% of VOUT(NOM)
275
IOUT=2A; VOUT=90% of VOUT(NOM)
550
PSRR
Output Noise Voltage
ΔVOUT/ΔVIN
en
F=10KHz Io=20mA
BW = 100Hz –100 KHz
COUT = 10µF
IOUT = 500mA
40 dB
125 µV(rms)
Enable Threshold Low
VEN(L)
1.2 V
Enable Threshold High
VEN(H)
1.3 V
Input Enable Low Current
IEN(L)
VEN = 0V
0 10 nA
Input Enable High Current
IEN(H)
VEN = 1.5V
150 300
nA
Power Good Low Threshold
Power Good High Threshold
VPG % of VOUT PG ON
VPG % of VOUT PG OFF
89 %
97 %
Power Good Output Low Voltage
VPGL
IPG_SINK = 500μA, Fault Condition
200 300
mV
Power Good Leakage Current
Thermal Shutdown
Thermal Shutdown Hysteresis
IPG
TSD
TSD_HYS
PG off, VPG = 12V
0.01 μA
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.
The total power dissipation for SO-8 EDP package is recommended to 2.5W rated at 25C ambient temperature. The thermal resistance Junction to Case
is 45C/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






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