AT1382A

Preliminary Product Information

4-Channel DC-DC Converter for DSC

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

5

Electrical Characteristics

(Ta=25℃, VCC=PVCC=5V)

Measure result

Parameter

Symbol

Condition

Min. Typ. Max.

Unit

Reference voltage block [REF]

Reference voltage

V

REF

0.88

0.90

0.92

V

Output voltage temperature

stability

△

V

REF

/V

REF

Ta = -30℃ to 85℃

-0.5

-

%

Input stability

Line

VCC=1.8V to 7V

-10

-

10

mV

Load stability

Load

VREF=0mA to –1mA

-10

-

10

mV

Shout circuit output current

I

OSC

VREF=0.7V

-20

-5

-1

mA

Under voltage lockout block [U.V.L.O]

Threshold voltage(CH1~CH3)

V

TH

1.5

1.6

1.7

V

Hysteresis width(CH1~CH3)

V

H

-0.2

-

V

Reset voltage(CH1~CH3)

V

RST

1.6

1.7

1.8

V

CH4 Pre-OSC change to Main-

OSC threshold

V

TH2

-1.7

-

V

Soft start block [CS]

Charge current

I

CS

-6.0

-5.0

-4.0

μ

A

Short circuit detection block [SCP]

Threshold voltage

V

TH

0.65

0.70

0.75

V

Input source current

I

CSCP

-1.5

-1.0

-0.7

μ

A

Triangular wave oscillator block [OSC]

Oscillator frequency

f

OSC

CT=100pF, RT=20kΩ

400

500

600

kHz

Frequency stability for voltage

△f

/fdv

VCC=1.8V to 7V

-

1

10

%

Frequency stability for

temperature

△f

/fdt

Ta=-30℃ to 85℃

-1-

%

Error amplifier block [Error Amp](CH1~CH4)

Threshold voltage

V

TH

FB=0.9V

0.69

0.70

0.71

V

V

△

V

-0.5

-

%

Input bias current

I

B

IN=0V

-320

-80

-

nA

Voltage gain

A

V

DC

-

100

-

dB