AMS3132 datasheet(3/10 Pages) AMS

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AMS3132

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

Enable Voltage (EN)…………..…..……………….……...-0.3V to 15V

Power Good (PG).……………..…..……….……………...-0.3V to 15V

Adjustable Voltage (ADJ)……………………….………… -0.3V to 3V

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

TO263-5 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

Adjustable Voltage

VADJ

Adjustable VOUT only

0.588

0.6

0.612

Adjustable pin bias current

IADJ_Bias

Adjustable VOUT only

100

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

Shutdown Current

ISHDN

VIN=3.3V, VEN=0V

µA

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)

Enable Threshold Low

VEN(L)

Optional EN Pin present

1.2

Enable Threshold High

VEN(H)

Optional EN Pin present

1.3

Input Enable Low Current

IEN(L)

VEN = 0V

Input Enable High Current

IEN(H)

VEN = 1.5V

150

300

Power Good Low Threshold

VPG

% of VOUT PG ON / Opt. PG pin only

Power Good High Threshold

VPG

% of VOUT PG OFF / Opt. PG pin only

Power Good Output Low Voltage

VPGL

IPG_SINK = 500

μA, Fault Condition

200

300

Power Good Leakage Current

IPG

PG off, VPG = 12V

0.01

μA

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.

Junction to ambient thermal resistance with the TO-263 package tab soldered to a double side printed circuit board with 2.5 in

2 of (1 oz.) copper area.

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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