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MAX9025, MAX9026, MAX9027, MAX9028
UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
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Status
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Active: In Production.
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Description
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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.
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| Key Features |
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Applications/Uses |
- 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
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| Key Specifications: Comparators |
| Part Number |
Comp-
arators |
tPD
(ns) |
VCMVR |
Rail to Rail Input |
VSUPPLY (Total)
(V) |
VSUPPLY (Total)
(V) |
ICC per Comp.
(µA) |
VOS
(mV) |
VOS
(mV) |
Logic Out |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Price |
| typ |
to Neg. Rail |
min |
max |
max |
typ |
max |
max w/pins |
See Notes |
| MAX9027 |
1 |
14000 |
Yes |
Yes |
1.8 |
5.5 |
1 |
0.3 |
5 |
CMOS |
-40 to +85 |
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1.6 |
$0.40 @1k |
| MAX9028 |
Open Drain |
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$0.40 @1k |
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See All Comparators (83)
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| Key Specifications: Comparators + Reference |
| Part Number |
Comp-
arators |
Thresh.
(V) |
Internal Ref. Accuracy
(%) |
tPD
(µs) |
VSUPPLY
(V) |
VSUPPLY
(V) |
ICC
(µA) |
Prog. Hyst. |
VOS
(mV) |
VOS
(mV) |
Logic Out |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Price |
| typ |
min |
max |
max |
typ |
max |
max w/pins |
See Notes |
| MAX9025 |
1 |
1.236 |
1 |
20 |
1.8 |
5.5 |
1.7 |
No |
0.3 |
5 |
Push-Pull |
-40 to +85 |
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1.6 |
$0.60 @1k |
| MAX9026 |
Open Drain |
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$0.60 @1k |
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See All Comparators + Reference (43)
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Diagram
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Functional Diagram
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Didn't Find What You Need?
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Document Ref.: 19-3241;
Rev 0;
2004-05-06
This page last modified: 2009-10-12
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