AMS3131 datasheet(3/9 Pages) ADMOS

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AMS3131

3A Fast Transient Linear Regulator

02/11/2010

www.advanced-monolithic.com

Phone (925) 443-0722

Fax (925) 443-0723

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

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

Symbol

Conditions

Min.

Typ.

Max.

Units

Output Voltage Accuracy

VOUT

-3

Maximum Output Current

IOUT_Max

Load Regulation

IOUT= 0 – 3A

0.1

Line Regulation

VIN=3.0 – 7.0V; IOUT=100mA

0.1

Supply Current

ISUP

VIN=3.3V, Io=0A

0.6

Current Limit

ILIM

Dropout Voltage

VDO

IOUT=0.1A; VOUT=95% of VOUT(NOM)

IOUT=1A; VOUT=95% of VOUT(NOM)

220

IOUT=2A; VOUT=95% of VOUT(NOM)

420

IOUT=3A; VOUT=95% of VOUT(NOM)

700

PSRR

ΔVOUT/ΔVIN

F=10KHz Io=20mA

Output Noise Voltage

BW= 100Hz –100 KHz

COUT = 22µF

IOUT = 2.75A

125

µV(rms)

Thermal Shutdown

TSD

145

°C

Thermal Shutdown Hysteresis

TSD_HYS

°C

Notes:

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 0.5in

2 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

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