AT1388/AT1388A

Preliminary Product Information

6-Channel DC-DC Controller 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]

Regulator voltage

V

REG

2.25

2.30

2.35

V

Output voltage temperature

stability

△

V

REF

/V

REF

TA = -30℃ to 85℃

-0.5

-

%

Input stability

Line

VCC=2.5V to 6V

-80

-

80

mV

Load stability

Load

VREG=0mA to –10mA

-20

-

20

mV

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

Threshold voltage(CH1~CH5)

V

TH

2.0

2.2

2.3

V

Hysteresis width(CH1~CH5)

V

H1_5

0.05

0.1

0.3

V

CH6 Pre-OSC change to Main-

OSC threshold

V

TH6

2.2

2.3

2.5

V

Hysteresis width(CH6 Pre-OSC

change to Main-OSC threshold)

V

H6

0.05

0.1

0.3

V

Pre-OSC frequency

f

PRE-OSC

320

400

480

KHz

Soft start block [CS]

Charge current

I

CS

-1.5

-1.0

-0.7

μ

A

Valid Threshold voltage

0.3

-

0.8

V

Short circuit detection block [SCP]

Threshold voltage

V

TH

0.80

0.90

1.00

V

Input source current

I

CSCP

-1.5

-1.0

-0.6

μ

A

Short detect comparator [SCP Comp]

Threshold voltage

V

TH

CH1 to CH6

0.65

0.7

0.75

V

Input bias current

I

B

IN=0V

-320

-80

-

nA

Triangular wave oscillator block [OSC]

Oscillator frequency

f

OSC

CT=82pF

400

500

600

kHz

Frequency stability for voltage

△f

/fdv

VCC=2.5V to 6V

-

1

10

%

Frequency stability for

temperature

△f

/fdt

TA=-30℃ to 85℃

-1

10

%

Error amplifier block [Error Amp](CH1~CH6)