NCP1444 View Datasheet(PDF) - ON Semiconductor

Part Name

Description

View to exact match

NCP1444

4.0 A 280 kHz/560 kHz Boost Regulators

ON Semiconductor 

NCP1442, NCP1443, NCP1444, NCP1445

VCC

SS

NFB

NCP1443/5

only

FB

NCP1442/4

only

Shutdown

Delay

Timer

2.0 V

Regulator

Sync

Thermal

Shutdown

Oscillator

Frequency

Shift 5:1

200 k

250 k

2.0 V

Negative

Error Amp

+

−

1.276 V

−0.65 V Detector

0.4 V Detector

−

+

Positive

Error Amp

S

PWM

Latch

Q

R

Driver

VSW

Switch

×5

Slope

Compensation

PWM

Comparator

+−

Ramp

Summer

15 mW

GND

VC

Figure 2. Block Diagram

http://onsemi.com

5

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