NCP1571

http://onsemi.com

2

Figure 1. Applications Circuit

GND

GATE(L)

GATE(H)

PWRGD

PGDELAY

COMP

NCP1571

C13

0.1

mF

C12

0.01

mF

R1

50 k

12 V

5.0 V

NTD4302

NTD4302

2.7

mH

3.3 k

+

+

33

mF/8.0 V/1.6 Arms

56

mF/4.0 V/1.6 Arms

SP−CAP 40 m

W

GND

Q1

Q2

+

+

C3

C2

C1

+

+

+

GND

2.5 V/10 A

C8

C9

C10

C11

5.1 k

R3

R5

L1

100 pF

C6

C4

0.47

mF

PWRGD

10

R4

MAXIMUM RATINGS

Rating

Value

Unit

Operating Junction Temperature

150

°C

Storage Temperature Range

−65 to 150

°C

ESD Susceptibility (Human Body Model)

2.0

kV

Lead Temperature Soldering:

Reflow: (Note 1)

230 peak

°C

Moisture Sensitivity Level

2

−

Package Thermal Resistance, SOIC−8

48

165

°C/W

°C/W

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit

values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,

damage may occur and reliability may be affected.

1. 60 second maximum above 183

°C.

MAXIMUM RATINGS

Pin Name

Pin Symbol

IC Power Input

15 V

−0.5 V

N/A

1.5 A Peak

450 mA DC

Compensation Capacitor

COMP

6.0 V

−0.5 V

10 mA

10 mA

Voltage Feedback Input

6.0 V

−0.5 V

1.0 mA

1.0 mA

Power Good Output

PWRGD

15 V

−0.5 V

1.0 mA

20 mA

Power Good Delay

PGDELAY

6.0 V

−0.5 V

1.0 mA

10 mA

High−Side FET Driver

GATE(H)

15 V

−0.5 V

−2.0 V for 50 ns

1.5 A Peak

200 mA DC

1.5 A Peak

200 mA DC

Low−Side FET Driver

GATE(L)

15 V

−0.5 V

−2.0 V for 50 ns

1.5 A Peak

200 mA DC

1.5 A Peak

200 mA DC

Ground

GND

0.5 V

−0.5 V

1.5 A Peak

450 mA DC

N/A