NJW4141 datasheet(4/13 Pages) NJRC

Part #	NJW4141

Description	2 - phase Boost Converter Switching Regulator IC

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Manufacturer	NJRC [New Japan Radio]

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

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4 / 13 page

Automotive NJW4141

- 4 -

Ver.2016-02-22

ELECTRICAL CHARACTERISTICS

(Unless otherwise noted, V+=VON/OFF=12V, CT=470pF, Ta=25 C)

PARAMETER

SYMBOL

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

Under Voltage Lockout Block

ON Threshold Voltage

VT_ON

V+= L → H

2.65

2.8

2.95

V

V+= L → H, Ta= -40 C to +125 C

2.65

–

2.95

OFF Threshold Voltage

VT_OFF

V+= H → L

2.4

2.55

2.7

V

V+= H → L, Ta= -40 C to +125 C

2.35

–

2.8

Oscillator Block

Oscillating Frequency1

fOSC1

CT=470pF

270

300

330

kHz

CT=470pF, Ta= -40 C to +125 C

260

–

330

Oscillating Frequency2

fOSC2

CT=1,500pF

90

100

110

kHz

CT=1,500pF, Ta= -40 C to +125 C

80

–

120

Charge Current

Ichg

150

200

250

A

Ta= -40 C to +125 C

140

–

260

Discharge Current

Idis

150

200

250

A

Ta= -40 C to +125 C

140

–

260

Voltage amplitude

VOSC

–

0.7

–

V

Oscillating Frequency

deviation (Supply voltage)

fDV

V+=3V to 40V

–

3

–

%

Soft Start Block

Charge Current

(SS pin)

Ichg_SS

1.6

2

2.4

A

Ta= -40 C to +125 C

1.6

–

2.4

Threshold Voltage

(SS pin)

VTHSS0

Duty1,2=0%

0.41

0.49

0.57

V

Duty1,2=0%, Ta= -40 C to +125 C

0.39

–

0.59

Threshold Voltage

(SS pin)

VTHSS85

Duty1,2=80%

0.92

1.1

1.28

V

Duty1,2=80%, Ta= -40 C to +125 C

0.87

–

1.33

Error Amplifier Block

Reference Voltage

VB

-1.0%

1.00

+1.0%

V

Ta= -40 C to +125 C

-2.0%

–

+2.0%

Input Bias Current

IB

-0.1

–

0.1

A

Ta= -40 C to +125 C

-0.1

–

0.1

Open Loop Gain

AV

–

80

–

dB

Gain Bandwidth

GB

–

1.5

–

MHz

Output Source Current

IOM+

VFB=1V, VIN-=0.9V

40

90

140

A

VFB=1V, VIN-=0.9V,

Ta= -40 C to +125 C

40

–

140

Output Sink Current

IOM-

VFB=1V, VIN-=1.1V

2

4

6

mA

VFB=1V, VIN-=1.1V,

Ta= -40 C to +125 C

2

–

8

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