PA03 • PA03A

PA03U

5

4

3

0 = OPERATE

1 = SHUT DN

500Ω

Q14

Q22

1K

1K

*

+5V

500Ω

PA03

* NOT REQUIRED

WHEN USING

CMOS LOGIC

FIGURE 1a.

DIRECT DRIVE

OF SHUTDOWN

3

0 = SHUT DN

1 = OPERATE

500Ω

Q14

Q22

1K

R

+15V

500Ω

PA03

FIGURE 1b.

HIGH VOLTAGE

LOGIC INTERFACE

CMOS

4

4

3

500Ω

Q14

Q22

1K

R1

**

500Ω

PA03

FIGURE 1c.

THERMALLY

ACTIVATED

SHUTDOWN

R2

4.7K

LOAD

R4

30K

R3

360Ω

360–

400mV

THERMAL SENSE

TRANSISTOR

+VS

2R

** SELECT SHUTOFF

TEMPERATURE

SELECT R4 FOR 5V

DROP ON R2

At a gain of 3:

1. Connect a 470pF compensation capacitor between

pins 9 and 10.

2. Typical slew rate will be 5V/µs.

3. Typical phase margin will be 45°.

At unity gain:

1. Connect a 1.8nF compensation capacitor between

pins 9 and 10.

2. Typical slew rate will be 1.8V/µs.

3. Typical phase margin will be 65°.

NEED TECHNICAL HELP? CONTACT APEX SUPPORT!

For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America.

For inquiries via email, please contact apex.support@apexanalog.com.

International customers can also request support by contacting their local Apex Microtechnology Sales Representative.

To find the one nearest to you, go to www.apexanalog.com

IMPORTANT NOTICE

Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change

without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further

notice to any specifications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this informa-

tion, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual

property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the informa-

tion only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not

extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR

LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDER-

STOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK.

Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks

of their respective holders.

Copyright © Apex Microtechnology, Inc. 2012

(All Rights Reserved)

www.apexanalog.com

SEP 2012

PA03U REVL