BD9528AMUV 데이터 시트보기 (PDF) - ROHM Semiconductor

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BD9528AMUV

Main Power Supply for Notebook PCs

ROHM Semiconductor 

BD9528AMUV

Technical Note

●ELECTRICAL CHARACTERISTICS

(Unless otherwise noted, Ta=25℃ VIN=12V, CTL=OPEN, EN1=EN2=5V, FS1=FS2=51kΩ)

Parameter

Symbol

Limits

Unit

Min.

Typ.

Max.

Condition

VIN standby current

VIN bias current

ISTB

IIN

70

150

250

μA EN1=EN2=0V, CTL=5V

60

130

230

μA Vo1=5V

VIN shut down mode current

ISHD

6

12

18

μA CTL=0V

CTL Low Voltage

VCTLL

-0.3

-

0.8

V

CTL High Voltage

VCTLH

2.3

-

28

V

CTL bias current

ICTL

-18

-12

-6

μA CTL=0V

EN Low Voltage

VENL

-0.3

-

0.8

V

EN High Voltage

VENH

2.3

-

5.5

V

EN bias current

[5V linear regulator](VIN)

REG1 output voltage

IEN

VREG1

-

3

6

μA EN=3V

4.90

5.00

5.10

V IREG1=1mA

Maximum current

IREG1

100

-

-

mA IREG2=0mA*

Line Regulation

Reg.l1

-

90

180

mV VIN=5.5 to 28V

Load Regulation

[3.3V linear regulator]

REG2 output voltage

Reg.L1

VREG2

-

30

50

mV IREG1=0 to 30mA

3.27

3.30

3.33

V IREG2=1mA

Maximum current

IREG2

100

-

-

mA IREG1=0mA*

Line Regulation

Reg.l2

-

-

20

mV VIN=5.5 to 28V

Load Regulation

[5V linear regulator](Vo1)

Input threshold voltage

Reg.L2

-

-

30

mV IREG2=0 to 30mA

REG1th

4.1

4.4

4.7

V Vo1: Sweep up

Input delay time

TREG1

1.5

3

6

ms

Switch resistance

RREG1

-

1.0

3.0

Ω

[Under Voltage lock out block]

REG1 threshold voltage

REG1_UVLO 3.9

4.2

4.5

V REG1: Sweep up

Hysteresis voltage

[Output voltage sense block]

Feedback voltage1

dV_UVLO

50

100

200

mV REG1: Sweep down

VFB1

0.693

0.700

0.707

V

FB1 bias current

IFB1

-

0

1

μA FB1=REF

Output discharge resistance1

RDISOUT1

50

100

200

Ω

Feedback voltage2

VFB2

0.693

0.700

0.707

V

FB2 bias current

IFB2

-

0

1

μA FB2=REF

Output discharge resistance2

RDISOUT2

50

* IREG1+IREG2≦100mA

100

200

Ω

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© 2011 ROHM Co., Ltd. All rights reserved.

3/29

2011.11 - Rev.A

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