A B C D E REVISIONS REV# DESCRIPTION 0 1st Prototype PRODUDCTION 2 VBIAS VBIAS HIGH LOW FLOAT 09/11/09 MollyZ VO0 VO1 1 1 2 2 HIGH 2 3 3 LOW 3 4 4 FLOAT 4 JP1 * See Quick Start Guide for Vbias range APPROVED VBIAS VO2 4 DATE 4 1 HIGH LOW FLOAT JP2 JP3 VBIAS C1 E1 VBIAS 2.2uF 10V 0603 * POWER 3 VBIAS MARGTOL 1 1 ON 2 3 OFF U1 LT3070EUFD JP5 28 R1 30.1K 1% E2 EN 27 BIAS 25 VO2 24 VO1 PWRGD 0.01uF VIN J1 J2 GND CIN1 47uF 10V FLOAT JP4 VO0 1 VIOC MARGTOL 22 MARGSEL 1 2 PWRGD MARGSEL 21 2 3 REF/BYP SENSE 19 5 IN OUT 18 6 IN OUT 17 7 IN OUT 16 8 IN OUT 15 C2 C5 1000pF + LOW 4 23 E3 VIN 1.2V - 3V 3 VBIAS VIOC 2 3 HIGH 2 CIN2 47uF 10V 1206 9 3 LOW 4 FLOAT JP6 2 GND GND GND GND GND GND GND GND GND GND 4 HIGH 10 11 12 13 14 20 26 29 J3 VOUT 0.8 - 1.8V @ 5A C3 10uF 10V 0805 C6 4.7uF 10V 0805 C7 2.2uF 10V 0805 C4 10uF 10V 0805 J4 GND CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 1 CONTRACT NO. APPROVALS TECHNOLOGY PCB DES. RB ENG. MollyZ TITLE: SCHEMATIC 5A PROGRAMMABLE VERY LOW DROPOUT REGULATOR SIZE A C:\ORCADWIN\CAPTURE\1433A\1433A_REV2.DSN THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. A B C 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: D IC NO. REV LT3070EUFD DEMO CIRCUIT 1433A Thursday, October 22, 2009 2 SHEET 1 E OF 1 1