MAX9026:UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference

The MAX9025–MAX9028 nanopower comparators in space-saving chip-scale (UCSP™) packages feature Beyond-the-Rails™ inputs and are guaranteed to operate down to +1.8V. The MAX9025/MAX9026 feature an on-board 1.236V ±1% reference and draw an ultra-low supply current of only 1µA, while the MAX9027/MAX9028 (without reference) require just 0.6µA of supply current. These features make the MAX9025–MAX9028 family of comparators ideal for all 2-cell battery-monitoring/management applications. The unique design of the output stage limits supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. This design also minimizes overall power consumption under dynamic conditions. The MAX9025/MAX9027 have a push-pull output stage that sinks and sources current. Large internal-output drivers allow rail-to-rail output swing with loads up to 5mA. The MAX9026/MAX9028 have an open-drain output stage that makes them suitable for mixed-voltage system design. All devices are available in the miniature 6-bump UCSP packages. Refer to the MAX9117 data sheet for similar comparators in 5-pin SC70 packages and the MAX9017 data sheet for similar dual comparators in 8-pin SOT23 packages.

Key Features
  • Space-Saving UCSP Package (1mm x 1.52mm)
  • Ultra-Low Supply Current
    • 0.6µA (MAX9027/MAX9028)
    • 1µA with Reference (MAX9025/MAX9026)
  • Guaranteed to Operate Down to +1.8V
  • Internal 1.236V ±1% Reference (MAX9025/MAX9026)
  • Input Voltage Range Extends 200mV Beyond-the-Rails
  • CMOS Push-Pull Output with ±5mA Drive Capability (MAX9025/MAX9027)
  • Open-Drain Output Versions Available (MAX9026/MAX9028)
  • Crowbar-Current-Free Switching
  • Internal Hysteresis for Clean Switching
  • No Phase Reversal for Overdriven Inputs
MAX9025, MAX9026, MAX9027, MAX9028: Functional Diagram
MAX9025, MAX9026, MAX9027, MAX9028: Functional Diagram
Applications/Uses
  • 2-Cell Battery Monitoring/Management
  • Medical Instruments
  • Mobile Communications
  • Notebooks and PDAs
  • Sensing at Ground or Supply Line
  • Telemetry and Remote Systems
  • Ultra-Low-Power Systems
DataSheet
titleDownload file
MAX9025-MAX9028 Data SheetMAX9025-MAX9028.pdf
Parametrics
Part NumberComp-
arators
tPD
(ns)
Input RangeVSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Comp.
(µA)
VOS
(mV)
VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxtypmaxSee Notes
MAX9027114000Rail to Rail
to Neg. Rail
1.85.510.35Push-Pull-40 to +85UCSP/6$0.46 @1k
MAX9028Open DrainUCSP/6$0.42 @1k

Part NumberComp-
arators
Thresh.
(V)
Internal Ref. Accuracy
(%)
tPD
(µs)
VSUPPLY
(V)
VSUPPLY
(V)
ICC
(µA)
Prog. Hyst.VOS
(mV)
VOS
(mV)
Logic OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
typminmaxmaxtypmaxSee Notes
MAX902511.2361201.85.51.7No0.35Push-Pull-40 to +85UCSP/6$0.67 @1k
MAX9026Open DrainUCSP/6
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX9026EBT+ActiveUCSP,;6 pin;1.6 mm²-40°C to +85°CLead Free
MAX9026EBT+TActiveUCSP,;6 pin;1.6 mm²-40°C to +85°CLead Free
MAX9026EBT-TNo Longer AvailableMAX9026EBT+TUCSP,;6 pin;1.6 mm²-40°C to +85°CNo
MAX9025-MAX9028.pdf MAX9026
Demonstrating Green Technology with Apples, Oranges, Lemons, and Limes DS80CH11
MAX9026.pdf MAX9026
MAX9025-MAX9028.pdf MAX9028