MC33470

http://onsemi.com

2

Oscillator

PWM

Comparator

OTA Error Amp

Sense

Compensation

G1

G2

Over Current

Detect

Outen

Power

Good

VID0

VID1

VID2

VID3

Voltage

Identification

Code

Input

Digitally Programmed

Reference

R

S

Q

PWM

Latch

+

5

VID4

18

17

16

15

14

410

9

14

3

1

8

20

2

19

13

6

SS

800

m

Over

Temp

11

7

10

mA

2.5 V

1.5 V

En

90

mA

190

mA

S

R

Q

Delay

Fault

20

mA

OT

Q

+

+

+

Delay

Figure 1. Simplified Block Diagram

PV

CC

Rating

Symbol

Value

Unit

Power Supply Voltage

7.0

V

Output Driver Supply Voltage (Operating)

PV

CC

18

V

−0.3 to 18

V

All Other Inputs and Digital (OT, Fault, Power Good) Outputs

V

Power Dissipation and Thermal Characteristics

Maximum Power Dissipation

Thermal Resistance, Junction−to−Ambient

Thermal Resistance, Junction−to−Case

0.60

91

60

W

°C/W

°C/W

Operating Junction Temperature

125

°C

Operating Ambient Temperature (Note 1)

0 to +70

°C

Storage Temperature Range

−55 to +125

°C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. ESD data available upon request