BD8961NV-E2 View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

MFG CO.

BD8961NV-E2

Low Noise High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

ROHM Semiconductor 

BD8961NV

Technical Note

●Electrical Characteristics(Ta=25℃, VCC=PVCC=3.3V, EN=VCC.)

Parameter

Standby current

Bias current

EN Low voltage

EN High voltage

EN input current

Oscillation frequency

Pch FET ON resistance

Nch FET ON resistance

Output voltage

ITH SInk current

ITH Source Current

UVLO threshold voltage

UVLO release voltage

Soft start time

Timer latch time

Output Short circuit Threshold Voltage

Symbol

ISTB

ICC

VENL

VENH

IEN

FOSC

RONP

RONN

VOUT

ITHSI

ITHSO

VUVLO1

VUVLO2

TSS

TLATCH

VSCP

●Block Diagram, Application Circuit

D8961

Lot No.

Fig.1 BD8961NV TOP View

Min.

-

-

-

2.0

-

0.8

-

-

3.250

10

10

3.6

3.65

0.5

1

-

Limits

Typ.

0

250

GND

VCC

1

1

200

150

3.300

20

20

3.8

3.90

1

2

1.65

Max.

10

450

0.8

-

10

1.2

320

270

3.350

-

-

4.0

4.2

2

3

2.31

Unit

Conditions

μA

μA

V

V

μA

MHz

mΩ

mΩ

V

μA

μA

V

V

ms

ms

VOUT

EN=GND

Standby mode

Active mode

VEN=5V

PVCC=5V

PVCC=5V

VOUT=3.6V

VOUT=3.0V

VCC=5→0V

VCC=0→5V

SCP/TSD operated

VOUT=3.3→0V

VCC

EN

8

VREF

Gm Amp.

Soft

Start

Current

Comp

RQ

S

SLOPE

CLK

OSC

VCC

UVLO

TSD

SCP

Current

Sense/

Protect

+

Driver

Logic

1

VOUT

3

ITH

RITH CITH

VCC

2

7

Input

PVCC

6

SW

Output

5

PGND

4

GND

Fig.2 BD8961NV Block Diagram

●Pin No. & function table

Pin No.

1

2

3

4

5

6

7

8

Pin name

VOUT

VCC

ITH

GND

PGND

SW

PVCC

EN

PIN function

Output voltage pin

VCC power supply input pin

GmAmp output pin/Connected phase compensation capacitor

Ground

Nch FET source pin

Pch/Nch FET drain output pin

Pch FET source pin

Enable pin (Active High)

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2/13

2010.04 - Rev.B

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