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AS1331
(Rev.:Rev1-03)

300mA Buck-Boost Synchronous DC/DC Converters

austriamicrosystems AG 

AS1331

Datasheet - Electrical Characteristics

6 Electrical Characteristics

VIN = 3.6V, VOUT = 3.3V, TAMB = -40°C to +85ºC. Typical values are at TAMB = +25ºC. Unless otherwise specified.

Table 3. Electrical Characteristics

Symbol

Input

Parameter

Conditions

Min Typ Max Units

VIN Input Voltage Range

Minimum Startup Voltage

Undervoltage Lockout

VUV Threshold1

Regulation

Output Voltage Adjustable

Version

ILOAD < 1mA

VIN decreasing

1.8

5.5

V

1.6

1.8

V

1.5

1.6

1.7

V

2.50

3.30

V

VOUT Output Voltage 3.3V

Output Voltage 3.0V

No Load

3.201 3.3 3.399 V

2.910 3.0 3.090 V

Output Voltage 2.5V

2.425 2.5 2.575 V

VFB FB Voltage Adjustable version No Load

1.212 1.25 1.288 V

IFB

FB Input Current Adjustable

Version

VOUT Lockout Threshold2

Operating Current

VFB = 1.3V, TAMB = 25°C

Rising Edge

1

100

nA

2.0 2.15 2.3

V

Quiescent Current VIN

IQ

Quiescent Current VOUT

VIN = 5V

VIN = 5V, VOUT = 3.6V, VFB = 1.3V

2

6

µA

20

32

µA

ISHDN Shutdown Current

Switches

EN = 0V, VOUT = 0V, TAMB = +25ºC

0.01

1

µA

IMOS

MOS Switch Leakage

NMOS B, C

VIN = 5V, TAMB=25°C, Switches A-D

VIN = 5V

0.01

1

µA

0.13

Ω

RON PMOS A

VIN = 5V

0.17

Ω

PMOS D

VOUT = 3.3V

0.21

Ω

IPEAK Peak Current Limit

Enable

L = 6.8µH, VIN = 5V

450 600 750 mA

VENH EN Input High

1.4

V

VENL EN Input Low

0.4

V

IEN EN Input Current

Low Battery & Power-OK

EN = 5.5V, TAMB = 25°C

1

100

nA

LBI Threshold

Falling Edge

1.212 1.25 1.288 V

LBI Hysteresis

10

mV

LBI Leakage Current

LBO Voltage Low3

LBI = 5.5V, TAMB = 25°C

ILBO = 1mA

1

100

nA

0.05 0.2

V

LBO Leakage Current

LBO = 5.5V, TAMB = 25°C

1

100

nA

Power-OK Threshold

LBI = 0V, Falling Edge

90 92.5 95

%

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Revision 1.03

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