CS5421

http://onsemi.com

2

LGND

15 k

CS5421

12 V

34.5 k

1.0 μF

3 × 1200 μF

0.1 μF

1.0 μH

5.0 V

3 × 1200 μF

COMP2

COMP1

PGND2

PGND1

GATE(L)2

GATE(H)1

GATE(H)2

GATE(L)2

SGND

1

2

3

6

8

7

5

4

13

16

15

14

11

9

12

10

1.2 μH

4 × 1200 μF

3.3 V/11 A

1.5 V/9.0 A

0.1 μF

15 k

30 k

30.9 k

2.7 μH

6 × 1200 μF

SENSE

GND

Figure 1. Application Diagram, 5.0 V/12 V to 3.3 V/11 A and 1.5 V/9.0 A Converter

for Processor I/O and Core Supplies

ABSOLUTE MAXIMUM RATINGS*

Rating

Value

Unit

150

°C

−65 to +150

°C

ESD Susceptibility (Human Body Model)

2.0

kV

Package Thermal Resistance:

28

115

°C/W

°C/W

Lead Temperature Soldering:

Reflow: (SMD styles only) (Note 1)

230 peak

°C

1. 60 second maximum above 183°C.

*The maximum package power dissipation must be observed.

ABSOLUTE MAXIMUM RATINGS

Pin Symbol

Pin Name

IC Power Input

16 V

−0.3 V

N/A

1.5 A peak

200 mA DC

COMP1, COMP2

Compensation Capacitor for

Channel 1 or 2

4.0 V

−0.3 V

1.0 mA

1.0 mA

Voltage Feedback Input for

Channel 1 or 2

5.0 V

−0.3 V

1.0 mA

1.0 mA

Fast Voltage Feedback

Input for Channel 1 or 2

5.0 V

−0.3 V

1.0 mA

1.0 mA