BH28PB1WHFV datasheet(3/11 Pages) ROHM

Part #	BH28PB1WHFV

Description	1ch 150mA CMOS LDO Regulators

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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Technical Note

BH□□PB1WHFV Series

3/10

www.rohm.com

2011.01 - Rev.B

●

Electrical characteristics

(Unless otherwise specified, Ta = 25°C, VIN = VOUT + 1.0 V, STBY = 1.5 V, SEL = 0 V, CIN = 0.47 µF, CO = 0.47 µF)

Parameter

Symbol

Limits

Unit

Conditions

Min.

Typ.

Max..

【

Regulator】

Output voltage

(high-speed mode)

VOUT1

×0.99

-

VOUT1

×1.01

V

VOUT≧2.5V,IOUT=0.1mA,SEL=1.5V

VOUT1

-0.025

-

VOUT1

+0.025

V

VOUT≦1.8V,IOUT=0.1mA,SEL=1.5V

Output voltage

(low-consumption mode)

VOUT2

×0.97

-

VOUT2

×1.038

V

VOUT≧2.5V,IOUT=0.1mA,SEL=0V

VOUT2

×0.967

-

VOUT2

×1.043

V

VOUT≦1.8V,IOUT=0.1mA,SEL=0V

Circuit current

(high-speed mode)

ICC1

-

20

40

μA

IOUT=0mA, VIN pin

monitor,SEL=1.5V

Circuit current

(low-consumption mode)

ICC2

-

2

4

μA

IOUT=0mA, VIN pin monitor, SEL=0V

Circuit current (STBY)

ISTBY

-

1.0

μA

STBY=0V

Ripple rejection ratio

(high-speed mode)

RR1

42

60

-

dB

VRR=-20dBv, fRR=1kHz,

IOUT=10mA, SEL=1.5V

Dropout voltage 1 *1

VSAT1

-

100

200

mV

VIN=VOUT×0.98,IOUT=50mA

Dropout voltage 2 *1

VSAT2

-

210

400

mV

VIN=VOUT×0.98,IOUT=100mA

Dropout voltage 3 *1

VSAT3

-

315

600

mV

VIN=VOUT×0.98,IOUT=150mA

Line regulation 1

(high-speed mode)

VDL1

-

2

20

mV

VIN=VOUT+1V to 5.5V,IOUT=10mA

Line regulation 2

(low-consumption mode)

VDL2

-

2

20

mV

VIN=VOUT+1V to 5.5V,IOUT=100μA

Load regulation

VDLO

-

10

40

mV

IOUT=10mA to 100mA

【

Mode switch】

Current threshold

(low-consumption mode)

ITH1

0.09

0.3

-

mA

SEL=0V IOUT=3mA⇒0mA sweep

Current threshold

(high-speed mode)

ITH2

-

1.2

2.2

mA

SEL=0V IOUT=0mA⇒3mA sweep

【

Over Current Protection 1】

Limit Current

ILMAX

160

300

500

mA

Vo=VOUT×0.90

Short current

ISHORT

20

50

100

mA

Vo=0V

【

Stand-by block】

STBY pin sink current

ISTB

-

2

4

μA

STBY=1.5V

STBY control voltage

ON

VSTBH

1.5

-

VIN

V

OFF

VSTBL

-0.3

-

0.3

V

Discharge resistance at standby RDCG

1.5

2.2

3.0

kΩ

STBY=0V

【

SEL PIN】

Pull-down resistance of SEL pin RSEL

0.5

1.0

2.0

MΩ

SEL control voltage

ON

VSELH

1.5

-

VIN

V

Fixed high speed mode

OFF

VSELL

-0.3

-

0.3

V

Automatic switch mode

* Note: This IC is not designed to be radiation-resistant.

*3: Except at VOUT ≤ 1.5 V.

●

Electrical characteristics of each output voltage

Output Voltage

Parameter

Min.

Typ.

Max.

Unit

Conditions

1.2 V

Max. output

current

70

120

−

mA

VCC = 1.7 V

150

−

VCC = 2.0 V

1.5 V

50

100

−

VCC = 1.8 V

150

−

VCC = 2.2 V

1.8 V ≤ VOUT

75

143

−

VCC = VOUT + 0.3 V

150

−

VCC = VOUT + 0.6 V

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