NJW4813 datasheet(4/14 Pages) NJRC

Part #	NJW4813

Description	Dual Half Bridge Driver with Boost Converter

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Manufacturer	NJRC [New Japan Radio]

Direct Link	http://www.jrc.co.jp/eng/index.html

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4 / 14 page

NJW4813

- 4 -

Ver.2012-10-19

ELECTRICAL CHARACTERISTICS

Boost Converter Block

(Unless otherwise noted, VDD_SW=VSTBYb=3.7V, RT=100kΩ, Ta=25°C)

PARAMETER

SYMBOL

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

Under Voltage Lockout Block

UVLO Release Voltage

VRUVLO_SW

2.1

2.4

2.7

V

UVLO Operate Voltage

VDUVLO_SW

2.0

2.2

2.5

V

UVLO Hysteresis Voltage

∆VUVLO_SW VRUVLO_SW - VDUVLO_SW

–

0.2

–

V

Soft Start Block

Soft Start Time

TSS

VB=0.95V

8

17

28

ms

Oscillator Block

Oscillation Frequency

fOSC

630

700

770

kHz

Oscillation Frequency

deviation (Supply voltage)

fDV

VDD_SW=3.0 to 5.5V

–

1

–

%

Oscillation Frequency

deviation (Temperature)

fDT

Ta= -40 to +85

°C

–

3

–

%

Error Amplifier Block

Reference Voltage

VB

Short IN- and FB,

Measuring IN- Pin

-1.0%

1.00

+1.0%

V

Input Bias Current

IB

VB=1.0V

-0.1

–

+0.1

µA

Open Loop Gain

AV

–

80

–

dB

Gain Bandwidth

GB

–

1

–

MHz

Output Source Current

IOM+

VFB=1V, VIN-=0.9V

8

16

24

µA

Output Sink Current

IOM-

VFB=1V, VIN-=1.1V

0.9

1.4

4

mA

IN- pin Clamp Voltage

VCLIN-

VSTBYb=0V, VDD_SW=5.5V,

ICLIN-=10µA

4.8

5.2

5.6

V

RADJ pin

FET ON Resistance

RON_RADJ

IRADJ=0.1mA

–

200

280

Ω

RADJ pin

FET Leak Current

ILEAK_RADJ

VSTBYb=0V, VRADJ=3.3V

–

1

µA

PWM Comparate Block

Maximum Duty Cycle

MAXDUTY

VIN-=0.9V

82

87

92

%

Output Block

Output ON Resistance

RON_SW

ISW=100mA

–

0.6

1.2

Ω

Switching Current Limit

ILMT_SW

1

2

–

A

Switching Leak Current

ILEAK_SW

VSTBYb=0V, VSW=40V

–

1

µA

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