TSM917
1.8V Nanopower Comparator with Internal 1.245V Reference
FEATURES
♦
Second-source for MAX917
♦
Guaranteed to Operate Down to +1.8V
♦
Ultra-Low Supply Current: 750nA
♦
Internal 1.245V ±1.5% Reference
♦
Input Voltage Range Extends 200mV Outside-the-Rails
♦
No Phase Reversal for Overdriven Inputs
♦
Push-pull Output
♦
Crowbar-Current-Free Switching
♦
Internal Hysteresis for Clean Switching
♦
5-pin SOT23 and 8-pin SOIC Packaging
DESCRIPTION
The TSM917 nanopower analog comparator is
electrically and form-factor identical to the MAX917
analog comparator. Ideally suited for all 2-cell battery-
management/monitoring applications, this 5-pin
SOT23 analog comparator guarantees +1.8V
operation, draws very little supply current, and has a
robust input stage that can tolerate input voltages
beyond its power supply. The TSM917 draws 750nA
of supply current and includes an on-board 1.245V
±1.5% reference.
The TSM917’s push-pull output drivers were
designed to drive 8mA loads from one supply rail to
the other supply rail. The TSM917 is also available in
an 8-pin SOIC package.
APPLICATIONS
2-Cell Battery Monitoring/Management
Medical Instruments
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Ultra-Low-Power Systems
Mobile Communications
Telemetry and Remote Systems
TYPICAL APPLICATION CIRCUIT
Page 1
© 2014 Silicon Laboratories, Inc. All rights reserved.
TSM917
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to V
EE
) ............................................ +6V
Voltage Inputs (IN+, IN-, REF) .... (V
EE
- 0.3V) to (V
CC
+ 0.3V)
Output Voltage
TSM917 ................................... (V
EE
- 0.3V) to (V
CC
+ 0.3V)
Current Into Input Pins ................................................ ±20mA
Output Current ............................................................ ±50mA
Output Short-Circuit Duration ............................................ 10s
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (Derate 2.5mW/°C above +70°C) ........ 200mW
8-Pin SOIC (Derate 5.88mW/°C above +70°C) ...... 471mW
Operating Temperature Range ...................... -40°C to +85°C
Junction Temperature ................................................ +150°C
Storage Temperature Range ....................... -65°C to +150°C
Lead Temperature (soldering, 10s) ............................... +300°
Electrical and thermal stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These
are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections
of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and
lifetime.
PACKAGE/ORDERING INFORMATION
ORDER
NUMBER
PART
CARRIER QUANTITY
MARKING
ORDER
NUMBER
PART
CARRIER QUANTITY
MARKING
TSM917EUK+
TAAA
TSM917EUK+T
Tape
& Reel
Tape
& Reel
-----
3000
TSM917ESA+
TS917E
TSM917ESA+T
Tube
Tape
& Reel
97
2500
Lead-free Program:
Silicon Labs supplies only lead-free packaging.
Consult Silicon Labs for products specified with wider operating temperature ranges.
Page 2
TSM917 Rev. 1.0
TSM917
ELECTRICAL CHARACTERISTICS
V
CC
= +5V, V
EE
= 0V, V
IN+
= V
REF
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.
See Note 1.
PARAMETER
Supply Voltage Range
Supply Current
IN+ Voltage Range
Input Offset Voltage
Input-Referred Hysteresis
Input Bias Current
Power-Supply Rejection Ratio
Output-Voltage Swing High
SYMBOL
V
CC
I
CC
V
IN+
V
OS
V
HB
I
B
PSRR
V
CC
- V
OH
CONDITIONS
Inferred from the
PSRR test
V
CC
= 1.6V
MIN
T
A
= +25°C
1.8
0.75
0.80
V
EE
- 0.2
1
4
0.15
0.1
190
55
190
55
95
8
98
10
17
22
30
95
6
4
1.2
T
A
= +25°C
T
A
= T
MIN
to T
MAX
1.227
1.200
1.245
95
BW = 10Hz to 100kHz
BW = 10Hz to 100kHz, C
REF
= 1nF
V
CC
= 1.8V to 5.5V
600
215
0.1
±0.2
1.263
1.290
TYP
MAX
5.5
1.30
1.60
V
CC
+ 0.2
5
10
1
2
1
400
500
200
300
400
500
200
300
UNITS
V
μA
V
mV
mV
nA
mV/V
mV
Output-Voltage Swing Low
V
OL
Output Short-Circuit Current
High-to-Low Propagation Delay
(Note 4)
Low-to-High Propagation Delay
(Note 4)
Rise Time
Fall Time
Power-Up Time
Reference Voltage
Reference Voltage
Temperature Coefficient
Reference Output Voltage
Noise
Reference Line Regulation
Reference Load Regulation
I
SC
t
PD
-
t
PD+
t
RISE
t
FALL
t
ON
V
REF
TCV
REF
e
n
∆V
REF
/
∆V
CC
T
A
= +25°C
T
A
= +25°C
V
CC
= 5V
T
A
= T
MIN
to T
MAX
Inferred from the output swing test
T
A
= +25°C
(Note 2)
T
A
= T
MIN
to T
MAX
(Note 3)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
V
CC
= 1.8V to 5.5V
T
A
= +25°C
V
CC
= 5V,
I
SOURCE
= 8mA
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V
CC
= 1.8V,
I
SOURCE
= 1mA
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V
CC
= 5V, I
SINK
= 8mA
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V
CC
= 1.8V,
I
SINK
= 1mA
T
A
= T
MIN
to T
MAX
V
CC
= 5V
Sourcing, V
O
= V
EE
V
CC
= 1.8V
V
CC
= 5V
Sinking, V
O
= V
CC
V
CC
= 1.8V
V
CC
= 1.8V
V
CC
= 5V
V
CC
= 1.8V
V
CC
= 5V
C
L
= 15pF
C
L
= 15pF
mV
mA
µs
µs
µs
µs
ms
V
ppm/°C
µV
RMS
mV/V
mV/nA
∆V
REF
/
∆I
OUT
∆I
OUT
= 10nA
Note 1:
All specifications are 100% tested at T
A
= +25°C. Specification limits over temperature (T
A
= T
MIN
to T
MAX
) are guaranteed by
design, not production tested.
Note 2:
V
OS
is defined as the center of the hysteresis band at the input.
Note 3:
The hysteresis-related trip points are defined by the edges of the hysteresis band, measured with respect to the center of the
hysteresis band (i.e., V
OS
) (See Figure 2).
Note 4:
Specified with an input overdrive (V
OVERDRIVE
) of 100mV, and load capacitance of C
L
= 15pF. V
OVERDRIVE
is defined above and
beyond the offset voltage and hysteresis of the comparator input. For the TSM917, reference voltage error should also be
added.
TSM917 Rev. 1.0
Page 3
TSM917
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= +5V; V
EE
= 0V; C
L
= 15pF; V
OVERDRIVE
= 100mV; T
A
= +25°C, unless otherwise noted.
Supply Current
vs Supply Voltage and Temperature
1.3
1.1
1
SUPPLY CURENT - µA
SUPPLY CURENT - µA
1.1
T
A
= +85°C
0.9
0.9
V
CC
=+5V
0.8
V
CC
=+3V
0.7
0.6
V
CC
=+1.8V
0.5
0.4
1.5
2.5
3.5
4.5
5.5
-40
-15
10
35
60
85
Supply Current vs Temperature
0.7
T
A
= +25°C
T
A
= -40°C
0.5
SUPPLY VOLTAGE - Volt
TEMPERATURE -
°C
Supply Current vs Output Transition Frequency
35
30
SUPPLY CURRENT - nA
200
25
V
CC
=+5V
20
15
V
CC
=+3V
10
V
CC
=+1.8V
5
0
1
10
100
1k
10k
0
50
V
OL
- mV
150
250
Output Voltage Low vs. Sink Current
V
CC
=+1.8V
V
CC
=+5V
V
CC
=+3V
100
0
2
4
6
8
10
12
14
16
OUTPUT TRANSITION FREQUENCY - Hz
Output Voltage Low
vs. Sink Current and Temperature
300
T
A
= +85°C
V
CC
– V
OH
- V
200
V
OL
- mV
T
A
= +25°C
0.5
SINK CURRENT- mA
Output Voltage High vs Source Current
V
CC
=+1.8V
0.4
V
CC
=+3V
0.3
0.2
V
CC
=+5V
100
T
A
= -40°C
0.1
0
0
2
4
6
8
10
12
14
16
0
0
2
4
6
8 10 12 14 16 18 20
SOURCE CURRENT- mA
SINK CURRENT- mA
Page 4
TSM917 Rev. 1.0
TSM917
TYPICAL PERFORMANCE CHARACTERISTICS
V
CC
= +5V; V
EE
= 0V; C
L
= 15pF; V
OVERDRIVE
= 100mV; T
A
= +25°C, unless otherwise noted.
Output Voltage High
Short-Circuit Sink Current vs Temperature
vs Source Current and Temperature
0.6
120
0.5
0.4
0.3
0.2
T
A
= -40°C
0.1
0
0
4
8
12
16
20
T
A
= +25°C
SINK CURRENT- mA
T
A
= +85°C
V
CC
– V
OH
- V
100
V
CC
=+5V
80
60
V
CC
=+3V
40
20
0
-40
-15
10
35
60
85
TEMPERATURE -
°C
V
CC
=+1.8V
SOURCE CURRENT- mA
Short-Circuit Source Current vs Temperature
140
120
SOURCE CURRENT- mA
100
80
60
V
CC
=+3V
40
20
0
-40
-15
10
35
60
85
V
CC
=+1.8V
V
OS
- mV
V
CC
=+5V
2.6
2.4
2.2
2.0
1.8
1.6
1.4
-40
Offset Voltage vs Temperature
V
CC
=+1.8V, 3V
V
CC
=+5V
-15
10
35
60
85
TEMPERATURE -
°C
TEMPERATURE -
°C
Hysteresis Voltage vs Temperature
5.5
5
4.5
V
HB
- mV
4
3.5
3
2.5
-40
-15
10
35
60
85
TEMPERATURE -
°C
REFERENCE VOLTAGE - V
1.246
Reference Voltage vs Temperature
1.245
V
CC
=+1.8V
1.244
V
CC
=+3V
1.243
1.242
V
CC
=+5V
1.241
-40
-15
10
35
60
85
TEMPERATURE -
°C
TSM917 Rev. 1.0
Page 5
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