ZSPM1025C / ZSPM1025D

© 2016 Integrated Device Technology, Inc.

3

January 22, 2016

Contents

Features................................................................................................................................................................... 1

Benefits .................................................................................................................................................................... 1

List of Figures .......................................................................................................................................................... 4

List of Tables ........................................................................................................................................................... 5

1

IC Characteristics ............................................................................................................................................. 6

1.1.

Absolute Maximum Ratings....................................................................................................................... 6

1.2.

Recommended Operating Conditions ....................................................................................................... 7

1.3.

Electrical Parameters ................................................................................................................................ 7

2

Product Summary........................................................................................................................................... 10

2.1.

Overview.................................................................................................................................................. 10

2.2.

Pin Description......................................................................................................................................... 12

2.3.

Available Packages ................................................................................................................................. 13

3

Functional Description.................................................................................................................................... 13

3.1.

Power Supply Circuitry, Reference Decoupling, and Grounding ............................................................ 13

3.2.

Reset/Start-up Behavior .......................................................................................................................... 14

3.3.

Digital Power Control ............................................................................................................................... 14

3.3.1.

Overview ........................................................................................................................................... 14

3.3.2.

Output Voltage Feedback ................................................................................................................. 14

3.3.3.

Digital Compensator ......................................................................................................................... 14

3.3.4.

Power Sequencing and the CONTROL Pin ...................................................................................... 15

3.3.5.

Pre-biased Start-up and Soft-Off ...................................................................................................... 17

3.3.6.

Current Sensing ................................................................................................................................ 17

3.3.7.

Temperature Measurement .............................................................................................................. 18

3.4.

Fault Monitoring and Response Generation............................................................................................ 18

3.4.1.

Output Over/Under Voltage .............................................................................................................. 18

3.4.2.

Output Current Protection ................................................................................................................. 19

3.4.3.

Over-Temperature Protection ........................................................................................................... 19

3.5.

Monitoring and Debugging via I

2C™ ....................................................................................................... 19

4

Application Information................................................................................................................................... 20

4.1.

Typical Application Circuit ....................................................................................................................... 20

4.2.

Pin Strap Options of the ZSPM1025C/D ................................................................................................. 23

4.2.1.

CONFIG0 – Output Voltage .............................................................................................................. 23

4.2.2.

CONFIG1 – Compensation Loop and Output Voltage Slew Rate .................................................... 24

4.3.

Typical Performance Measurements for the ZSPM1025C and ZSPM1025D ......................................... 27

4.3.1.

Typical Load Transient Response – ZSPM1025C – Capacitor Range #1 – Comp0........................ 28

4.3.2.

Typical Load Transient Response – ZSPM1025C – Capacitor Range #2 – Comp1........................ 29

4.3.3.

Typical Load Transient Response – ZSPM1025C – Capacitor Range #3 – Comp2........................ 30

4.3.4.

Typical Load Transient Response – ZSPM1025C – Capacitor Range #4 – Comp3........................ 31