AP1128SA datasheet(3/7 Pages) ANACHIP

3 / 7 page

3A Bus Terminator Regulator

AP1128

Anachip Corp.

www.anachip.com.tw

Rev.1.0 Jul 20, 2005

3/7

Electrical Characteristics

VIN = +2.5V, VCNTL = +3.3V, VREFEN = +1.25V, COUT = 10uF (Ceramic)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VOS

Output Offset Voltage (Note 1)

IOUT=0A

-20

-5

IL: 0A --> 1.5A

0.5

∣

∆VLOAD∣ Load Regulation

IL: 0A --> -1.5A

0.5

VIN

Input Voltage Range (DDR I/II) (Note2) VCNTL ≥ VIN

1.6

2.5/1.8

VCNTL

Gate Drive Voltage Range (Note2)

VCNTL ≥ VIN

3.3

ICNTL

Operation Current of VCNTL

IOUT = 0A

ISHDN

Current in Shutdown

VREFEN < 0.2V,

RL=180Ω

Quiescent Current

IOUT=0A

Short Circuit Protection

SOP-8

ILIMIT

Current Limit

TO-252

Over Temperature Protection

TOS

Thermal Shutdown Temperature

3.3V

≤ VCNTL ≤ 5V

140

Shutdown Function

Shutdown Threshold Trigger

Output = High

0.8

Shutdown Threshold Trigger

Output = Low

0.2

Note 1: VOS is the voltage measurement VOUT subtracted from VREFEN.

Note 2: Keep VCNTL ≥ VIN at power on/off sequences.

Note 3: Surface mounted on 1 in

2 copper pad of FR4 board

Typical Performance Characteristics

1.20

1.22

1.24

1.26

1.28

1.30

1.5

1.6

1.7

1.9

2.1

2.3

2.5

VIN (V)

Fig 1. Line Regulation ( VIN v.s. VOUT )

1.20

1.22

1.24

1.26

1.28

1.30

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

VCNTL (V)

Fig 2. Line Regulation ( VCNTL v.s. VOUT )

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

2.02.5 3.03.5 4.0 4.5 5.05.5 6.0

VCNTL (V)

Fig 3. Line Regulation ( VCNTL v.s. ICNTL )

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