Supervisory Circuits
Analog Devices power supply voltage monitors and microprocessor supervisors monitor positive and negative power supplies, with integration of up to eight supply monitors in a tiny package. These devices generate a reset signal if any power supply goes above or below the user-defined threshold. Reset times are usually fixed at 200 ms or are adjustable with a single capacitor. Aside from power supply monitoring, CPUs and ASICs can also be supervised by an integrated watchdog timer.
Subcategories
Product Selection Table
Design Notes
- DN1037 - Power Supply Sequencing Simplified PDF
- DN421 - An Easy Way to Add Auxiliary Control Functions to Hot Swap Cards PDF
- DN427 - Pushbutton On/Off Controller with Failsafe Voltage Monitoring PDF
- DN408 - Versatile Voltage Monitors Simplify Detection of Overvoltage and Undervoltage Faults PDF
- DN401 - Power Supply Sequencing Made Simple PDF
Product Selector Card
- Power System Manager and Super Sequencer Selection Guide PDF
- Programmable Six Supply Sequencer and Supervisor PDF
- Voltage Monitors & Supervisors Quick Guide PDF
- Digital Power System Management PDF
- 100V Micropower Voltage Monitor PDF
- Programmable Hex Voltage Supervisors PDF
- Pushbutton Controllers PDF
- Micropower Hot Swap Controller PDF
LT Journal
- Power Supply Sequencing Simplified PDF
- Simplify Small Solar Systems with Hysteretic Controller PDF
- I2C Programmable Multichannel Voltage Supervisors with EEPROM PDF
- 4- and 6-Supply Monitors Feature ±1.5% Accuracy and Watchdog Timers for Rails Down to 1.2V PDF
- June 2008 - 500nA Supply Supervisors Extend Battery Life in Portable Electronics PDF
- Mar 2008 - 1.5% Accurate Single-Supply Supervisors Simplify Part Selection and Operate to 125°C PDF
- Mar 2008 - 6-Input Supervisors Offer Accurate Monitoring and 125°C Operation PDF
- Dec 2003 Hot Swap Controller with Power-Up Timeout Function Simplifies Hot Swapping Boards with Multiple Power Supplies PDF
- May 2001 Ramp Three Supplies with a Supply Monitor and Hot Swap Controller PDF
- Oct 2007 - Pushbutton On/Off Controller Provides uProcessor Reset Monitor and Input Supply Monitoring PDF
- Sep 2006 Sequencer-Supervisor Simplifies Design of Multi-Supply Systems PDF
- Sep 2006 Single Device Combines Pushbutton On/Off Control, Ideal Diode PowerPath and Accurate System Monitoring PDF
- June 2006 Dual/Triple Power Supply Monitor for Undervoltage and Overvoltage on Positive and Negative Supplies PDF
- Feb 2004 Compact, Versatile, Accurate, 3-State Programmable Power Supply Supervisors PDF
- Dec 2003 Low Voltage Wizardry Provides the Ultimate Power-On Reset Circuit PDF
- Dec 2002 Programmable Quad Supervisors Offer Unparalleled Flexibility for Multi-Voltage Monitoring Applications PDF
Application Notes
Technical Articles
Supervisory Circuits
| SortOrder | Part# | Number of Supplies | Reset Voltage | Second Reset Voltage | Third Reset Voltage | Isupply (typ) (A) | Watchdog Timer | Vs+ (max) (V) | Price (100-499) ($ US) | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC2964 | 4 | 1.2V, 1.5V, 1.8V, 1V, 2.5V, 3.3V, 5V, Adj, -Adj | Adj, -Adj | Adj, -Adj | 140µ | Yes | 5.5 | $2.68 (LTC2964CUDC#PBF) | $2.23 (LTC2964CUDC#PBF) |
| 2 | LTC2962 | 4 | 1.2V, 1.5V, 1.8V, 1V, 2.5V, 3.3V, 5V, Adj, -Adj | Adj, -Adj | Adj, -Adj | 140µ | Yes | 5.5 | $2.38 (LTC2962CUD#PBF) | $1.98 (LTC2962CUD#PBF) |
| 3 | LTC2963 | 4 | 1.2V, 1.5V, 1.8V, 1V, 2.5V, 3.3V, 5V, Adj, -Adj | Adj, -Adj | Adj, -Adj | 140µ | Yes | 5.5 | $2.68 (LTC2963CUDC-1#PBF) | $2.23 (LTC2963CUDC-1#PBF) |
| 4 | LTC2937 | 6 | Adj | Adj | Adj | 1m | No | 16.5 | $7.23 (LTC2937CUHE#PBF) | $5.95 (LTC2937CUHE#PBF) |
| 5 | LTC2966 | 2 | Adj | Adj | - | 7µ | No | 100 | $2.96 (LTC2966CSW#PBF) | $2.44 (LTC2966CSW#PBF) |
| 6 | LTC2965 | 1 | Adj | - | - | 7µ | No | 100 | $2.40 (LTC2965CDD#PBF) | $1.98 (LTC2965CDD#PBF) |
| 7 | LTC2936 | 6 | Adj | Adj | Adj | 700µ | No | 13.9 | $6.80 (LTC2936CGN#PBF) | $5.60 (LTC2936CGN#PBF) |
| 8 | ADM8642 | 1 | Adj | - | - | 200µ | No | 5.5 | - | $0.25 (ADM8642T100ACBZ-R7) |
| 9 | ADM8641 | 1 | Adj | - | - | 92n | No | 5.5 | - | $0.25 (ADM8641T263ACBZ-R7) |
| 10 | ADM8615 | 1 | Adj | - | - | 20µ | Yes | 5.5 | - | $0.59 (ADM8615Y100ACBZ-R7) |
| 11 | ADM8614 | 1 | Adj | - | - | 92n | Yes | 3.6 | - | $0.59 (ADM8614Y263ACBZ-R7) |
| 12 | ADM8613 | 1 | Adj | - | - | 92n | Yes | 5.5 | - | $0.59 (ADM8613Y232ACBZ-R7) |
| 13 | ADM8612 | 1 | Adj | - | - | 92n | No | 5.5 | - | $0.42 (ADM8612N110ACBZ-R7) |
| 14 | ADM8611 | 1 | Adj | - | - | 92n | No | 5.5 | - | $0.39 (ADM8611N263ACBZ-R7) |
| 15 | ADM8324 | 1 | Adj | - | - | 92n | Yes | 5.5 | - | $0.79 (ADM8324WAH29ARJZR7) |
| 16 | ADM8323 | 1 | Adj | - | - | 10µ | Yes | 5.5 | - | $0.79 (ADM8323WCC29ARJZR7) |
| 17 | ADM8322 | 1 | Adj | - | - | 10µ | Yes | 5.5 | $0.79 (ADM8322WB26ARJZRL7) | $0.69 (ADM8322WB26ARJZRL7) |
| 18 | ADM8321 | 1 | Adj | - | - | 10µ | Yes | 5.5 | - | $0.69 (ADM8321WAX30ARJZR7) |
| 19 | ADM8320 | 1 | Adj | - | - | 10µ | Yes | 5.5 | - | $0.69 (ADM8320WBX3NARJZR7) |
| 20 | ADM8319 | 1 | Adj | - | - | 10µ | Yes | 5.5 | - | $0.69 (ADM8319WB31ARJZR7) |
| 21 | ADM8318 | 1 | Adj | - | - | 10µ | Yes | 5.5 | - | $0.69 (ADM8318WCY46ARJZR7) |
| 22 | ADM8316 | 1 | Adj | - | - | 10µ | Yes | 5.5 | - | $0.69 (ADM8316WAY27ARJZR7) |
| 23 | ADM8710 | 4 | 1.8V, 3.3V, Adj | 1.8V, 3.3V | Adj | 100µ | No | 5.5 | - | $1.79 (ADM8710L2ARJZ-RL7) |
| 24 | LTC2960 | 2 | Adj | Adj | - | 850n | No | 36 | $2.08 (LTC2960CDC-1#TRMPBF) | $1.71 (LTC2960CDC-1#TRPBF) |
| 25 | LTC2933 | 6 | Adj | Adj | Adj | 700µ | No | 13.9 | $5.89 (LTC2933CDHD#PBF) | $4.85 (LTC2933CDHD#PBF) |
| 26 | LTC2911-5 | 3 | 3.3V | Adj | Adj | 10µ | No | 6.5 | $1.85 (LTC2911CTS8-5#TRPBF) | $1.52 (LTC2911CTS8-5#TRPBF) |
| 27 | LTC2911-4 | 3 | 3.3V | 1.2V | Adj | 10µ | No | 6.5 | $1.85 (LTC2911CTS8-4#TRPBF) | $1.52 (LTC2911CTS8-4#TRPBF) |
| 28 | LTC2911-3 | 3 | 3.3V | 1.8V | Adj | 10µ | No | 6.5 | $1.85 (LTC2911CTS8-3#TRPBF) | $1.52 (LTC2911CTS8-3#TRPBF) |
| 29 | LTC2911-2 | 3 | 3.3V | 2.5V | Adj | 10µ | No | 6.5 | $1.85 (LTC2911CTS8-2#TRPBF) | $1.52 (LTC2911CTS8-2#TRPBF) |
| 30 | LTC2911-1 | 3 | 3.3V | 5V | Adj | 10µ | No | 6.5 | $1.85 (LTC2911CTS8-1#TRPBF) | $1.52 (LTC2911CTS8-1#TRPBF) |
| 31 | ADM6306 | 1 | Adj | 0.4, 1.23 | - | 15µ | No | 5.5 | $1.20 (ADM6306D131ARJZ-R7) | $1.15 (ADM6306D131ARJZ1R7) |
| 32 | ADM6305 | 2 | Adj | Adj | - | 20µ | No | 5.5 | $1.20 (ADM6305D3ARJZ1-RL7) | $1.15 (ADM6305D3ARJZ1-RL7) |
| 33 | ADM6346 | 1 | Adj | - | - | 500n | No | 5.5 | - | $0.95 (ADM6346-46ARTZ-R7) |
| 34 | ADM6328 | 4 | Adj | Adj | Adj | 115µ | No | 5.5 | - | $0.95 (ADM6328-22ARTZ-R7) |
| 35 | ADM6326 | 1 | Adj | - | - | 500n | No | 5.5 | - | $0.95 (ADM6326-22ARTZ-R7) |
| 36 | ADM12914 | 4 | Adj | Adj | Adj | 40µ | No | - | $2.98 (ADM12914-1ARQZ) | $2.87 (ADM12914-1ARQZ) |
| 37 | LTC2939 | 6 | 3.3V, 5V | 1.2V, 1.5V, 1.8V, 2.5V, 3.3V | 1.2V, 1.5V, 1.8V, 2.5V, Adj | 80µ | Yes | 6 | $3.28 (LTC2939CMS#PBF) | $2.70 (LTC2939CMS#PBF) |
| 38 | LTC2938 | 4 | 3.3V, 5V | 1.2V, 1.5V, 1.8V, 2.5V, 3.3V | 1.2V, 1.5V, 1.8V, 2.5V, Adj | 80µ | Yes | 6 | $2.61 (LTC2938CDE#PBF) | $2.15 (LTC2938CDE#PBF) |
| 39 | ADM6339 | 4 | 1.8V, 2.5V, 3.3V, 3V, 5V, -5V | Adj, -Adj | Adj, -Adj | 500n | No | 5.5 | $1.85 (ADM6339AARJZ-RL7) | $1.79 (ADM6339AARJZ-RL7) |
| 40 | ADM2914 | 4 | Adj, -Adj | Adj, -Adj | - | 20µ | No | - | $2.87 (ADM2914-1ARQZ) | $2.56 (ADM2914-1ARQZ) |
| 41 | AD5100 | 4 | Adj | Adj | Adj | 2m | Yes | 30 | - | $3.05 (AD5100YRQZ-1RL7) |
| 42 | LTC2935 | 1 | 2.25V, 2.4V, 2.55V, 2.7V, 2.85V, 3.15V, 3.3V, 3V | - | - | 500n | No | 6 | $1.48 (LTC2935CDC-3#TRMPBF) | $1.22 (LTC2935CDC-1#TRPBF) |
| 43 | LTC2934 | 1 | Adj | - | - | 500n | No | 6 | $1.45 (LTC2934CDC-1#TRMPBF) | $1.15 (LTC2934CDC-1#TRPBF) |
| 44 | ADM1184 | 4 | Adj | Adj | Adj | 80µ | No | 5.5 | $1.91 (ADM1184ARMZ) | $1.84 (ADM1184ARMZ) |
| 45 | LTC2918 | 1 | Adj | - | - | 30µ | Yes | 6.2 | $1.91 (LTC2918CMS-A1#PBF) | $1.30 (LTC2918CDDB-A1#TRPBF) |
| 46 | LTC2917 | 1 | Adj | - | - | 30µ | Yes | 6.2 | $1.91 (LTC2917CMS-A1#PBF) | $1.30 (LTC2917CDDB-A1#TRPBF) |
| 47 | ADM13307 | 1 | 1.8V, 2.5V, 3.3V, 5V | 1.8V, 3.3V, 5V | 1.8V, 3.3V, 5V | 16µ | No | 5.5 | $1.41 (ADM13307-18ARZ) | $1.02 (ADM13307-18ARZ) |
| 48 | ADM13305 | 3 | Adj | Adj | - | 40µ | Yes | 5.5 | $1.31 (ADM13305-18ARZ) | $0.99 (ADM13305-18ARZ) |
| 49 | LTC2953-2 | 1 | Adj, -Adj | - | - | 14µ | No | 27 | $2.71 (LTC2953CDD-2#PBF) | $2.30 (LTC2953CDD-2#PBF) |
| 50 | LTC2953-1 | 1 | Adj, -Adj | - | - | 14µ | No | 27 | $2.71 (LTC2953CDD-1#PBF) | $2.30 (LTC2953CDD-1#PBF) |
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