NCP81243_17 datasheet(11/26 Pages) ONSEMI | Dual Output 3 & 2 Phase Controller

Part No.	NCP81243

Description	Dual Output 3 & 2 Phase Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP81243

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Table 4. NCP81243 (3+2) ELECTRICAL CHARACTERISTICS

Unless otherwise stated: −40

°C < TA < 100°C; 4.75 V < VCC < 5.25 V; CVCC = 0.1 mF

Parameter

Unit

Max

Typ

Min

Test Conditions

BIAS SUPPLY

VCC Quiescent Current

PS2

50

mA

VCC Quiescent Current

PS3

20

mA

VCC Quiescent Current

PS4 (25

°C only)

230

mA

VCC Quiescent Current

Enable low

45

mA

UVLO Threshold

VCC rising

4.5

V

VCC falling

4

VCC UVLO Hysteresis

200

mV

VRMP

Supply Range

4.5

20

V

UVLO Threshold

VRMP rising

4.2

V

VRMP falling

3

VCC UVLO Hysteresis

700

mV

DAC SLEW RATE

Soft Start Slew Rate

1/2 SR Fast

mv/

ms

Slew Rate Slow

1/2 SR Fast

mv/

ms

Slew Rate Fast

>10

mv/

ms

AUX Soft Start Slew Rate

1/2 SR Fast

mv/

ms

AUX Slew Rate Slow

1/2 SR Fast

mv/

ms

AUX Slew Rate Fast

>10

mv/

ms

ENABLE INPUT

Enable High Input Leakage Current

Enable = 0

−1

0

1.0

mA

Upper Threshold

VUPPER

0.8

V

Lower Threshold

VLOWER

0.3

V

Enable Delay Time

Measure time from Enable transitioning HI,

VBOOT is not 0 V

2.5

ms

DRON

Output High Voltage

Sourcing 500

mA

3.0

−

V

Output Low Voltage

Sinking 500

mA

−

0.1

V

Pull Up Resistances

2.0

k

W

Rise/Fall Time

CL (PCB) = 20 pF,

DVo = 10% to 90%

−

160

ns

Internal Pull Down Resistance

VCC = 0 V

70

k

W

IOUT /IOUTA OUTPUT

Input Referred Offset Voltage

Ilimit to CSREF

−3

+3

mV

Output current max

Ilimit sink current 80

mA

−

800

mA

Current Gain

(Iout current)/(Ilimit Current)

Rlim = 20 K, Riout = 5 K

DAC = 0.8 V, 1.25 V, 1.52 V

9.5

10

10.5

OSCILLATOR

Switching Frequency Range

300

−

1400

KHz

Switching Frequency Accuracy

300 KHz < Fsw < 1.4 MHz

−10

−

10

%

3 Phase Operation

350

390

430

kHz

OUTPUT OVER VOLTAGE & UNDER VOLTAGE PROTECTION (OVP & UVP)

Over Voltage Threshold During

Soft−Start

2.5

V

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