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DESCRIPTION
Demonstration circuit SCP-LT3094-EVALZ features the
LT3094, an ultralow noise, ultrahigh power supply
rejection ratio (PSRR) negative low dropout (LDO)
regulator. The board operates over an input range of –3.8V
to –20V, and can deliver up to 500mA output current.
Like all boards in the Signal Chain Power series, this board
is designed to be easily plugged into other SCP boards to
form a complete signal chain power system, enabling fast
evaluation of low power signal chains. To evaluate this
board, some universal SCP hardware is required, namely:
SCP-INPUT-EVALZ
SCP-OUTPUT-EVALZ
SCP-1X5BKOUT-EVALZ
SCP-THRUBRD-EVALZ
Table 1. Performance Summary
SYMBOL
PARAMETER
V
Max Input Voltage
IN(MAX)
V
Max Output Voltage
OUT(MAX)
I
Max Output Current
OUT(MAX)
BOARD IMAGE
DEMO MANUAL SCP-LT3094-EVALZ
LT3094 Negative, Ultrahigh PSRR,
SCP-FILTER-EVALZ
SCP-1X2BKOUT-EVALZ
SCP-5X1-EVALZ
NOTES
Figure 1. SCP-LT3094-EVALZ Board
DEMO MANUAL
SCP-LT3094-EVALZ
Signal Chain Power
LDO Linear Regulator
To properly evaluate SCP series demo boards, you will
need the SCP Configurator companion software. SCP
Configurator can help you choose the right board and to-
pology for your design.
Note that this Demo Manual does not cover details im-
portant to the operation and configuration regarding the
LT3094. Please refer to the
plete description of the part.
Design files for this circuit board are available.
All registered trademarks and trademarks are property of their respective owners.
LT3094 datasheet
for a com-
MIN
TYP
MAX
–20
–19.5
500
UNITS
V
V
mA
Rev. 0
1
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Table of Contents
Related Manuals for Analog Devices Linear ADI Power SCP-LT3094-EVALZ
Summary of Contents for Analog Devices Linear ADI Power SCP-LT3094-EVALZ
- Page 1 DEMO MANUAL DEMO MANUAL SCP-LT3094-EVALZ SCP-LT3094-EVALZ Signal Chain Power LT3094 Negative, Ultrahigh PSRR, LDO Linear Regulator DESCRIPTION Demonstration circuit SCP-LT3094-EVALZ features the To properly evaluate SCP series demo boards, you will LT3094, an ultralow noise, ultrahigh power supply need the SCP Configurator companion software. SCP rejection ratio (PSRR) negative low dropout (LDO) Configurator can help you choose the right board and to- regulator.
-
Page 2: Quick Start Procedure
DEMO MANUAL SCP-LT3094-EVALZ QUICK START PROCEDURE Demonstration circuit SCP-LT3094-EVALZ is easy to set NOTE: Make sure that the input voltage is always within up to evaluate the performance of any SCP hardware spec. If using a dynamic load to measure output volt- configuration. -
Page 3: Configuration Settings
DEMO MANUAL SCP-LT3094-EVALZ CONFIGURATION SETTINGS Demonstration circuit SCP-LT3094-EVALZ features the If precision undervoltage lockout (UVLO) operation is de- LT3094, an ultralow noise, ultrahigh power supply sired, program enable divider R2 and R4 such that: rejection ratio (PSRR) negative low dropout (LDO) R4 = 1 0 k −... - Page 4 DEMO MANUAL SCP-LT3094-EVALZ VOLTAGE INPUT-TO-OUTPUT CONTROL (VIOC) PGFB PIN CONFIGURATION CONFIGURATION To achieve a very low 1/f corner, C4 may need to be sized VIOC functionality allows the LT3094 to directly modulate as high as 22µF , which dramatically increases the startup a preceding switching regulator feedback to maintain a time.
-
Page 5: Parts List
DEMO MANUAL SCP-LT3094-EVALZ PARTS LIST ITEM REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER ANALOG DEVICES SUPPLIED 08_051372b CAP CER 4.7UF 50V 10% X7R 1206 SAMSUNG CL31B475KBHNNNE CAP CER 10UF 50V X5R 1206 SAMSUNG CL31A106MBHNNNE CAP CER X7R KEMET C1206C475K3RACTU CAP MLCC 1206 (Note 1) INPUT CONN-PCB MALE HEADER 3POS 2.54MM PITCH R/A GOLD... -
Page 6: Schematic Diagram
DEMO MANUAL SCP-LT3094-EVALZ SCHEMATIC DIAGRAM ILIM VIOC Rev. 0... - Page 7 Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
- Page 8 Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY.
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