TP2021/TP2025
SC70, 1.8V, Nano-power Comparators with Voltage Reference
Description
The TP2021 has a push-pull output stage with loads
up to 25mA. The TP2025 has an open-drain output
stage that makes it suitable for mixed-voltage
system design. Both feature an on-chip 1.248V
±1.8% reference and draw an ultra-low supply
current of only 440nA (max). The TP202x
incorporate 3PEAK’s proprietary and patented
design techniques to achieve the best world-class
performance among all nano-power comparators.
Both have 13μs fast response time under 1.8V to
5.5V supply. The internal input hysteresis eliminates
output switching due to internal input noise voltage,
reducing current draw. They have input
common-mode range 200mV beyond the supply
rails, and operate down to +1.8V. The integrated
1.248V voltage reference offers low 120ppm/°C drift,
is stable with up to 10nF capacitive load, and can
provide up to 25mA of output current. These
features make the TP202x ideal for all 2-Cell Battery
Monitoring/Management.
The TP202x is available in the tiny SC70/SOT23
package for space-conservative designs. Both
versions are specified for the temperature range of
–40°C to +85°C.
Features
Ultra-Low Supply Current:
390 nA Comparator with Reference
Internal 1.248V ± 1.8% Reference @ VDD =5V
Fast Response Time: 13 μs Propagation Delay,
with 100 mV Overdrive
Internal Hysteresis for Clean Switching
Offset Voltage: ± 2.0 mV Maximum
Offset Voltage Temperature Drift: 0.3 μV/°C
Input Bias Current: 6 pA Typical
Input Common-Mode Range Extends 200 mV
Push-Pull Output with ±25 mA Drive Capability
Open-Drain Output Version Available: TP2025
No Phase Reversal for Overdriven Inputs
Low Supply Voltage: 1.8V to 5.5V
Green, Space-Saving SC70/SOT23 Package
Applications
Battery Monitoring / Management
Alarm and Monitoring Circuits
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Oscillators and RC Timers
Mobile Communications and Notebooks
Ultra-Low-Power Systems
3PEAK and the 3PEAK logo are registered trademarks of
3PEAK INCORPORATED. All other trademarks are the property
of their respective owners.
V
Battery
Related Products
DEVICE
Load
TP2021
R
PU(1)
DESCRIPTION
Fast 68ns, 1.8V Low Power (46µA), Internal Hysteresis,
TP1941/TP1941N
±3mV Maximum V
OS
, – 0.2V to V
DD
+ 0.2V RRI, Push-
/TP1942/TP1944
Pull (CMOS/TTL) Output Comparators
Ref
Battery
R
1
R
sense
R
2
TP1945/TP1945N
±3mV Maximum V
OS
, – 0.2V to V
DD
+ 0.2V RRI, Open-
/TP1946/TP1948
Drain Output Comparators
TP1931
/TP1932/TP1934
TP1935
/TP1936/TP1938
TP2011
/TP2012/TP2014
TP2015
/TP2016/TP2018
Fast 68ns, 1.8V Low Power (46µA), Internal Hysteresis,
950ns, 3µA, 1.8V, ±2.5mV V
OS-MAX
, – 0.2V to V
DD
+ 0.2V
RRI, Internal Hysteresis, Push-Pull Output Comparators
950ns, 3µA, 1.8V, ±2.5mV V
OS-MAX
, – 0.2V to V
DD
+ 0.2V
RRI, Internal Hysteresis, Open-Drain Comparators
Ultra-low 200nA, 13µs, 1.6V, ±2mV Maximum V
OS
,
Internal Hysteresis, – 0.2V to V
DD
+ 0.2V RRI, Push-Pull
(CMOS/TTL) Output Comparators
Ultra-low 200nA, 13µs, 1.6V, ±2mV Maximum V
OS
,
Internal Hysteresis, – 0.2V to V
DD
+ 0.2V RRI, Open-
Drain Output Comparators
NOTE: (1) Use R
PU
with the TP2025
TP2021 in Low-Side Current Sensing
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1
TP2021/TP2025
SC70, 1.8V, Nano-power Comparators with Voltage Reference
Absolute Maximum Ratings
Note 1
Supply Voltage: V
+
– V
–
....................................6.0V
Input Voltage............................. V
–
– 0.3 to V
+
+ 0.3
Input Current: +IN, –IN,
Note 2
..........................±10mA
Output Current: OUT.................................... ±25mA
Output Short-Circuit Duration
Note 3
…......... Indefinite
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any
Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
Note 2:
The inputs are protected by ESD protection diodes to each power supply. If the input extends more than 500mV beyond the power
supply, the input current should be limited to less than 10mA.
Note 3:
A heat sink may be required to keep the junction temperature below the absolute maximum. This depends on the power supply voltage
and how many amplifiers are shorted. Thermal resistance varies with the amount of PC board metal connected to the package. The specified
values are for short traces connected to the leads.
Operating Temperature Range.........–40°C to 85°C
Maximum Junction Temperature................... 150°C
Storage Temperature Range.......... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ......... 260°C
ESD, Electrostatic Discharge Protection
Symbol
HBM
CDM
Parameter
Human Body Model ESD
Charged Device Model ESD
Condition
ANSI/ESDA/JEDEC JS-001
ANSI/ESDA/JEDEC JS-002
Minimum Level
2
1
Unit
kV
kV
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3
TP2021/TP2025
Electrical Characteristics
SC70, 1.8V, Nano-power Comparators with Voltage Reference
The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 27°C.
V
DD
= +1.8V to +5.5V, V
IN+
= V
DD
, V
IN-
= 1.2V, R
PU
=10kΩ, C
L
=15pF.
SYMBOL
V
DD
V
OS
V
OS
TC
V
HYST
V
HYST
TC
I
B
I
OS
R
IN
C
IN
CMRR
V
CM
PSRR
V
OH
V
OL
I
SC
I
Q
V
OUT
V
OUT
TC
V
OUT
LC
t
R
t
F
t
PD+
t
PD-
T
PD-SKEW
PARAMETER
Supply Voltage
Input Offset Voltage
Note 1
Input Offset Voltage Drift
Note 1
Input Hysteresis Voltage
Note 1
Input Hysteresis Voltage Drift
Note 1
Input Bias Current
Input Offset Current
Input Resistance
Input Capacitance
Common Mode Rejection Ratio
Common-mode Input Voltage
Range
Power Supply Rejection Ratio
High-Level Output Voltage
Low-Level Output Voltage
Output Short-Circuit Current
Quiescent Current per Comparator
Reference Voltage
Reference Voltage Drift
Reference
Voltage
Load
Regulation
Rising Time
Note 2
Falling Time
Propagation Delay (Low-to-High)
Propagation Delay (High-to-Low)
Propagation Delay Skew
Note 3
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
Differential
Common Mode
V
CM
= V
SS
to V
DD
●
I
OUT
=-1mA
I
OUT
=1mA
Sink or source current
V
DD
= 5V
V
DD
= 3V
0μA≤I
source
≤400μA
0μA≤I
sink
≤400μA
●
●
●
1.225
1.202
CONDITIONS
●
MIN
1.8
-2.0
3
0.5
0.3
4
20
6
4
> 100
2
4
82
TYP
MAX
5.5
+2.0
7
UNITS
V
mV
μV/°C
mV
μV/°C
pA
pA
GΩ
pF
dB
V
+
90
V
SS
+0.3
25
390
1.248
1.224
150
1.45
0.13
5
5
13
14
1
440
1.272
1.246
V
dB
V
V
mA
nA
V
V
μV/°C
μV/μA
μV/μA
ns
ns
μs
μs
μs
50
V
–
60
V
DD
-0.3
Overdrive=100mV, V
IN-
=1.2V
Overdrive=100mV, V
IN-
=1.2V
Overdrive=100mV, V
IN-
=1.2V
19
18
5
Note 1:
The input offset voltage is the average of the input-referred trip points. The input hysteresis is the difference between the input-referred
trip points.
Note 2:
For TP2025/TP2025U, t
R
dependent on R
PU
and C
L-
.
Note 3:
Propagation Delay Skew is defined as: t
PD-SKEW
= t
PD+
- t
PD-
.
4
REV1.3
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