www.advanced-monolithic.com

updated April 24, 2009

AMS2931

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

(Note 2)

Min.

AMS2931C

Typ.

Max.

Units

Adjustable Version

Reference Voltage

1.14

1.20

1.26

V

J

≤ 125°C, R1=27k,

1.08

1.32

V

Output Voltage Range

3

24

V

Line Regulation

IN

≤ 26V

.02

1.5

mV/V

Load Regulation

5mA

≤I

O

≤ 100 mA

0.3

1

%

Dropout Voltage

I

O

≤ 10 mA

I

O

= 100 mA

0.05

0.3

0.2

0.6

V

V

Quiescent Current

I

O

= 10 mA

I

O

= 100 mA

0.4

15

0.8

1

1

mA

mA

mA

Output Noise Voltage

10Hz-100kHz

100

Output Impedance

40

m

Ω

Long Term Stability

T =1000hr

0.4

%/1000hr

Ripple Rejection

0.02

%/V

Maximum Operating Input

Voltage

21

22

V

Maximum Line Transient

T = 1ms,

τ ≤100ms

60

70

V

Reverse Polarity Input Voltage,

D/C

-15

-30

V

Reverse Polarity Input Voltage,

Transient

-50

-80

V

On/Off Threshold Voltage

On

Off

3.25

2.0

2.2

1.2

V

V

On/Off Threshold Current

20

50

µA

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test

conditions, see the Electrical Characteristics tables.

Note 2: See Circuit in Typical Applications. To ensure constant junction temperature, low duty cycle pulse testing is used.

Note 3: Limits appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for

Note 4: The junction-to-ambient thermal resistance are as follows: 195

°C/W for the TO-92 (N) package, 160°C/W for the molded plastic SO-8 (S), 50°C/W

for the TO-220 package and 73

junction-to-case of 3

°C/W and the thermal resistance added by the heat sink and the thermal interface. The thermal resistance of the TO-263 package can be

reduced by increasing the PCB copper area thermally connected to the package: using 0.5 square inches of copper area,

copper area