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Maxim > Solutions > Computers: Notebook
High-Voltage Monitoring for Battery Stacks
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| Display |
Title/Parts |
Key Advantages |
| QV PDF |
1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier
MAX9634
| Industry's Smallest Current-Sense Amp: 1mm x 1mm with ICC < 1µA, VOS < 250µV, Gain Error |
| QV PDF |
2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with Protector and Optional SHA-1 Authentication
DS2775, DS2776, DS2777, DS2778
| Industry's Smallest 2-Cell, Stand-Alone Fuel Gauge to Integrate an Li+ Protector and SHA-1 Authentication |
| QV PDF |
Standalone OCV-Based Fuel Gauge
DS2786B
| 2-Wire Standalone Fuel Gauge Requires No Learn Cycle to Provide Initial Capacity Estimate or Maintain Accuracy During Use; Now Optimized for Smartphones with Push-Mail Feature |
| QV PDF |
1µA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier
MAX9938
| Industry's Smallest Current-Sense Amplifier: 1mm x 1mm with ICC < 1µA, VOS < 500µV, Gain Error < 0.5% |
| QV |
Advanced Smart Battery-Pack Controller
MAX1788
| Smallest, Lowest Power Consumption Battery-Pack Controller Integrates a User-Programmable Microcontroller Core, a Coulomb-Counting Fuel Gauge, a Multichannel Data-Acquisition Unit, and an SMBus v1.1-Compliant Master/Slave SMBus Interface |
| QV PDF |
High-Voltage, Low-Current Voltage Monitors in SOT Packages
MAX6457, MAX6458, MAX6459, MAX6460
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| Key Specifications: Battery Protectors, Selectors and Monitors |
| Part Number |
Functions |
Battery Type |
Interface |
User Data Storage
(Bytes) |
Parameters Measured |
Battery Protection |
VSUPPLY
(V) |
VSUPPLY
(V) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Oper. Temp.
(°C) |
| min |
max |
max w/pins |
| DS2775 |
| Fuel Gauge | | Protector | | Status Monitor |
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2 Cell Li-Ion |
1-Wire |
16 EEPROM |
| Current | | Temperature | | Time | | Voltage |
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| Over Voltage | | Over-Current | | Over/Under Voltage |
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4 |
9.2 |
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15 |
-20 to +70 |
| DS2776 |
| Fuel Gauge | | Protector | | Status Monitor |
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2 Cell Li-Ion |
1-Wire |
16 EEPROM |
| Current | | Temperature | | Time | | Voltage |
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| Over Voltage | | Over-Current | | Over/Under Voltage |
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4 |
9.2 |
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15 |
-20 to +70 |
| DS2777 |
| Fuel Gauge | | Protector | | Status Monitor |
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2 Cell Li-Ion |
2-Wire |
16 EEPROM |
| Current | | Temperature | | Time | | Voltage |
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| Over Voltage | | Over-Current | | Over/Under Voltage |
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4 |
9.2 |
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15 |
-20 to +70 |
| DS2778 |
| Fuel Gauge | | Protector | | Status Monitor |
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2 Cell Li-Ion |
2-Wire |
16 EEPROM |
| Current | | Temperature | | Time | | Voltage |
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| Over Voltage | | Over-Current | | Over/Under Voltage |
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4 |
9.2 |
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15 |
-20 to +70 |
| DS2786B |
Fuel Gauge |
1 Cell Li-Ion |
2-Wire |
32 EEPROM |
| Current | | Temperature | | Voltage |
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- |
2.5 |
4.5 |
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9.6 |
-40 to +85 |
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See All Battery Protectors, Selectors and Monitors (25)
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| Key Specifications: Current Sense Amplifiers |
| Part Number |
CMVR
(V) |
CMVR
(V) |
ICC
(µA) |
Bi-Dir. Curr. Sense |
VSENSE_FS
(mV) |
VOS @25°C
(µV) |
Gain |
Gain Accuracy @25°C
(%) |
BW
(kHz) |
Comp-
arators |
Oper. Temp.
(°C) |
Package/Pins |
| min |
max |
typ |
recomm. |
max |
max |
@ -3dB |
| MAX9634 NEW! |
1.6 |
28 |
1 |
No |
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250 |
| 25 V/V | | 50 V/V | | 100 V/V | | 200 V/V |
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0.5 |
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0 |
-40 to +85 |
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| MAX9938 |
500 |
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See All Current Sense Amplifiers (26)
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| Key Specifications: Supervisors (1 Monitored Voltage) |
| Part Number |
Reset Thresh.
(V) |
Reset Out |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
ICC
(µA) |
| Active Low |
Active High |
min |
max |
| MAX6457 |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 | | >=5.5 |
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Open Drain |
- |
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No Watchdog |
| High Voltage (>6V) | | Latched Output |
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12.5 |
| MAX6458 |
Open Drain |
- |
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| High Voltage (>6V) | | Latched Output | | Overvoltage/Window Monitor |
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| MAX6460 |
- |
Open Drain |
<1ms |
| High Voltage (>6V) | | Overvoltage/Window Monitor |
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See All Supervisors (1 Monitored Voltage) (274)
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| Key Specifications: Supervisors (2 Monitored Voltages) |
| Part Number |
Interface |
Reset Thresh.
(V) |
Reset Out |
tRESET |
Watchdog Feature |
Supervisor Features |
ICC
(µA) |
| Active Low |
min |
max |
| MAX6459 |
R/C Adjustable |
| 1.2 to 1.8 | | 1.8 to 2.5 | | 2.5 to 3.3 | | 3.3 to 5.5 | | >=5.5 |
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Open Drain |
<1ms |
No Watchdog |
| Adjustable Reset Input | | High Voltage (>6V) | | Overvoltage/Window Monitor |
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12.5 |
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See All Supervisors (2 Monitored Voltages) (84)
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