Sequencers, Trackers, & Margining Controllers
Analog Devices sequencers, trackers, and margining controllers provide additional functionality to one or multiple power supplies. Our sequencing controllers allow power supplies to be turned on or off in any order by adding time delays to each supply. In a tracking-based system, a master voltage rail is chosen and all of the lower voltage rails are slaved to its on-ramp or off-ramp. When testing power supplies in an automated PCB test environment, a margining controller allows power supply output voltages to be precisely adjusted up and down by sourcing or sinking current into the feedback node or voltage adjust pin of the power supply. This allows a system to test the correct operation of electrical components at the upper and/or lower power supply voltage limits specified for a given design.
Subcategories
Product Selection Table
Latest Resources
Product Selector Card
LT Journal
- Power Supply Sequencing Simplified PDF
- April 2010 - Dual 500mA µPower LDO Features Independent 1.8V–20V Inputs and Easy Sequencing in a 4mm × 3mm DFN PDF
- Sep 2006 Sequencer-Supervisor Simplifies Design of Multi-Supply Systems PDF
- Mar 2006 MOSFETs Make Sense for Tracking and Sequencing Power Supplies PDF
- Sep 2005 Supply Tracking and Sequencing at Point-of-Load: Easy Design without the Drawbacks of MOSFETs PDF
- November 2004 - Power Supply Tracking for Linear Regulators PDF
- March 2005 - Flexible Power Supply Sequencing and Monitoring PDF
- May 2004 Single Device Tracks and Monitors Five Supplies PDF
- Feb 2004 Versatile Power Supply Tracking without MOSFETs PDF
- Dec 2003 Voltage Margining Made Easy PDF
- Dec 2003 Low Voltage Wizardry Provides the Ultimate Power-On Reset Circuit PDF
Application Notes
Technical Articles
Videos
Design Notes
- DN1037 - Power Supply Sequencing Simplified PDF
- DN384 - Accurate Power Supply Sequencing Prevents System Damage PDF
- DN421 - An Easy Way to Add Auxiliary Control Functions to Hot Swap Cards PDF
- DN372 - Power Supply Tracker Can Also Margin Supplies PDF
- DN401 - Power Supply Sequencing Made Simple PDF
- DN391 - Pushbutton On/Off Controller Simplifies System Design PDF
- DN389 - Tracking and Sequencing Made Simple with Tiny Point-of-Load Circuit PDF
Sequencers, Trackers, & Margining Controllers
| SortOrder | Part# | Number of Supplies | Vs span (min) (V) | Vs span (max) (V) | Isupply (typ) (A) | Sequencing Type | Features | Comments | Price (100-499) ($ US) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ADM1266 | 17 | 3 | 15 | 16m | Programmable State Machine | Sequencing, Supervisor | Super Sequencer with Interchip Bus and Nonvolatile Fault Recording | $13.67 (ADM1266ACPZ) | $11.99 (ADM1266ACPZ) |
| 2 | LTC7106-1 | 1 | 2.5 | 5.5 | 1.3m | - | SPI Interface | A 7-Bit Current DAC with SPI Interface | $1.52 (LTC7106EDDB-1#TRMPBF) | $1.25 (LTC7106EDDB-1#TRPBF) |
| 3 | LTC7106 | 1 | 2.5 | 5.5 | 700µ | - | PMBus | A 7-Bit Current DAC with PMBus Interface | $1.52 (LTC7106EDDB#TRMPBF) | $1.25 (LTC7106EDDB#TRPBF) |
| 4 | ADM1260 | 10 | 3 | 16 | 4.5m | Up and Down | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Fault Recording Blackbox | $11.99 (ADM1260ACPZ) | $10.49 (ADM1260ACPZ) |
| 5 | LTC2937 | 6 | 2.9 | 16.5 | 1m | Up and Down | EEPROM, I2C/SMBus Interface, Sequencing, Supervisor | Programmable Six Channel Sequencer and Voltage Supervisor with EEPROM | $7.23 (LTC2937CUHE#PBF) | $5.95 (LTC2937CUHE#PBF) |
| 6 | ADM1169 | 8 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, Fault Recording Blackbox, FET Drive Output | $6.69 (ADM1169ACPZ) | $6.49 (ADM1169ACPZ) |
| 7 | ADM1168 | 8 | 3 | 14.4 | 4.2m | Programmable State Machine | EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, Fault Recording Blackbox, FET Drive Output | $5.69 (ADM1168ASTZ) | $5.49 (ADM1168ASTZ) |
| 8 | ADM1166 | 12 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, Fault Recording Blackbox, FET Drive Output | $10.20 (ADM1166ACPZ) | $9.99 (ADM1166ACPZ) |
| 9 | ADM1186 | 4 | 2.7 | 5.5 | 146µ | Up and Down | Sequencing, Supervisor | Enable Output | $1.83 (ADM1186-2ARQZ) | $1.76 (ADM1186-2ARQZ) |
| 10 | ADM1185 | 4 | 2.7 | 5.5 | 24µ | Up | Sequencing, Supervisor | Enable Output | $1.77 (ADM1185ARMZ-1) | $1.25 (ADM1185ARMZ-1) |
| 11 | ADM6820 | 2 | 2.95 | 5.5 | 350µ | Up | Sequencing, Supervisor | FET Drive Output | - | $1.25 (ADM6820ARJZ-REEL7) |
| 12 | ADM6819 | 2 | 2.95 | 5.5 | 350µ | Up | Sequencing, Supervisor | FET Drive Output | - | $1.25 (ADM6819ARJZ-REEL7) |
| 13 | LTC2928 | 4 | 2.9 | 16.5 | 1m | Up and Down | Sequencing, Supervisor | Multichannel Power Supply Sequencer and Supervisor | $4.76 (LTC2928CG#PBF) | $3.95 (LTC2928CG#PBF) |
| 14 | LTC2926 | 3 | 2.9 | 5.5 | 2.5m | - | Tracking | MOSFET-Controlled Power Supply Tracker | $4.12 (LTC2926CGN#PBF) | $3.50 (LTC2926CGN#PBF) |
| 15 | LTC2927 | 1 | 2.9 | 5.5 | 560µ | - | Tracking | Single Power Supply Tracking Controller | $1.89 (LTC2927CDDB#TRMPBF) | $1.61 (LTC2927CDDB#TRPBF) |
| 16 | ADM1069 | 8 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $4.85 (ADM1069ACPZ) | $4.53 (ADM1069ACPZ) |
| 17 | ADM1063 | 10 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $9.86 (ADM1063ACPZ) | $9.03 (ADM1063ACPZ) |
| 18 | ADM1062 | 10 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $9.38 (ADM1062ASUZ) | $7.82 (ADM1062ASUZ) |
| 19 | ADM1068 | 8 | 3 | 14.4 | 4.2m | Programmable State Machine | EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $4.48 (ADM1068ASTZ) | $4.17 (ADM1068ASTZ) |
| 20 | ADM1067 | 10 | 3 | 14.4 | 4.2m | Programmable State Machine | EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | - | - |
| 21 | ADM1066 | 12 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $9.69 (ADM1066ACPZ) | $8.86 (ADM1066ACPZ) |
| 22 | ADM1065 | 10 | 3 | 14.4 | 4.2m | Programmable State Machine | EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $6.88 (ADM1065ACPZ) | $5.99 (ADM1065ACPZ) |
| 23 | ADM1064 | 10 | 3 | 14.4 | 4.2m | Programmable State Machine | 12-bit ADC, EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $8.96 (ADM1064ACPZ) | $8.08 (ADM1064ACPZ) |
| 24 | ADM1087 | 1 | 2.25 | 3.6 | 10µ | Up | Sequencing, Supervisor | Enable Output | - | $0.39 (ADM1087AKSZ-REEL7) |
| 25 | ADM1086 | 1 | 2.25 | 3.6 | 10µ | Up | Sequencing, Supervisor | Enable Output | - | $0.39 (ADM1086AKSZ-REEL7) |
| 26 | ADM1085 | 1 | 2.25 | 3.6 | 10µ | Up | Sequencing, Supervisor | Enable Output | - | $0.39 (ADM1085AKSZ-REEL7) |
| 27 | LTC2925 | 4 | 2.9 | 5.5 | 1.5m | - | Tracking | Remote sense switch for voltage drop compensation Controls three supplies without series FETs or a f | $4.41 (LTC2925CGN#PBF) | $3.75 (LTC2925CGN#PBF) |
| 28 | LTC2924 | 6 | 3 | 6 | 1.5m | Up and Down | Sequencing | Quad Power Supply Sequencer | $3.00 (LTC2924CGN#PBF) | $2.65 (LTC2924CGN#PBF) |
| 29 | LTC2923 | 3 | 2.9 | 5.5 | 1.3m | - | Tracking | Three tracking options available. Controls two supplies without series FETs or a third supply with a | $3.35 (LTC2923CDE#PBF) | $2.95 (LTC2923CMS#PBF) |
| 30 | ADM1060 | 7 | 3 | 14.4 | 3m | Programmable Logic | EEPROM, I2C Interface, Sequencing, Supervisor | Enable Output, FET Drive Output | $7.46 (ADM1060ARUZ) | $6.78 (ADM1060ARUZ) |
| 31 | LTC2922 | 5 | 2.5 | 5 | 2m | - | Tracking | 5 remote sense switches for voltage drop compensation. Limited sequencing possible | $3.85 (LTC2922CF#PBF) | $3.40 (LTC2922CF#PBF) |
| 32 | LTC2921 | 5 | 2.5 | 5 | 2m | - | Tracking | 3 remote sense switches for voltage drop compensation. Limited sequencing possible | $3.60 (LTC2921CGN#PBF) | $3.15 (LTC2921CGN#PBF) |
| 33 | LTC2920-2 | 1 | 2.2 | 6 | 230µ | - | Margining | Dual Power Supply Margining Controller | $1.90 (LTC2920-2CMS8#PBF) | $1.75 (LTC2920-2CMS8#PBF) |
| 34 | LTC2920-1 | 1 | 2.2 | 6 | 230µ | - | Margining | Single Power Supply Margining Controller | $1.40 (LTC2920-1CS5#TRMPBF) | $1.31 (LTC2920-1CS5#TRPBF) |
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