Triple-Output Power-Supply Controller

for Notebook Computers

_______________________________________________________________________________________

3

PARAMETER

Quiescent Power Consumption

(both controllers on)

MIN

TYP

MAX

5.2

8.6

UNITS

mW

Input Current

Off V+ Current

±1

µA

REF Fault Lockout Voltage

30

60

S

—

H

—

D

—

N

–

2.4

3.2

V

REF Output Voltage

3.24

3.36

µA

V

VL - 0.5

4.2

4.7

V

V

SYNC

Input High Voltage

2.4

REF Load Regulation

30

75

mV

S

—

H

—

D

—

N

–

, ON3, ON5, DA0, DA1, DB0, DB1

D1, D2 Trip Voltage

Shutdown V+ Current

Input Low Voltage

0.8

25

40

1.61

1.69

µA

Standby V+ Current

V

V

70

110

µA

D1, D2 Input Current

S

—

H

—

D

—

N

–

, ON3, ON5, DA0, DA1, DB0, DB1, SYNC

±100

nA

Q1, Q2 R

—

D

—

Y

—

5

–

Source Current

VL Output Voltage

12

20

30

µA

Q1, Q2 R

—

D

—

Y

—

5

–

Sink Current

92

95

200

500

1000

%

µA

Q1, Q2, R

—

D

—

Y

—

5

–

Output High Voltage

SYNC = 0V or 5V

VH - 0.5

V

Q1, Q2, R

—

D

—

Y

—

5

–

Output Low Voltage

Maximum Duty Cycle

4.5

5.5

V

89

92

0.4

V

Quiescent VH Current

VL Fault Lockout Voltage

410

µA

SYNC = 3.3V

3.6

4.2

V

Oscillator SYNC Range

Oscillator Frequency

240

350

270

300

330

kHz

170

200

230

kHz

CONDITIONS

D1 = D2 = D3 = DA0 = DA1 = DB0 = DB1 = 0V,

FB5 = CS5 = 5.25V, FB3 = CS3 = 3.5V

FB5 = CS5 = 5.25V, VL switched over to FB5

Falling edge

No external load (Note 2)

Rising edge of FB5, hysteresis = 1%

SYNC Rise/Fall Time

Falling edge, hysteresis = 1%

–

S

—

H

—

D

—

N

–

= D1 = D2 = ON3 = ON5 = DA0 = DA1 = DB0 =

DB1 = 0V, V+ = 30V

D1 = D2 = ON3 = ON5 = DA0 = DA1 = DB0 = DB1 = 0V,

V+ = 30V

D1 = D2 = 0V to 5V

VH = 18V, D1 = D2 = 5V, no external load

Falling edge, hysteresis = 1%

SYNC = 3.3V

SYNC = 0V or 5V

200

ns

Not tested

SYNC Low Pulse Width

200

ns

SYNC High Pulse Width

200

ns

ELECTRICAL CHARACTERISTICS (continued)

—

H

—

D

—

N

–

= ON3 = ON5 = 5V, other digital input levels are 0V or +5V,

VL/FB5 Switchover Voltage

(also R

—

D

—

Y

—

5

–

Trip Voltage)

INTERNAL REGULATOR AND REFERENCE

COMPARATORS

OSCILLATOR AND INPUTS/OUTPUTS