Electrical characteristics – Rainbow Electronics MAX871 User Manual
Page 2
MAX870/MAX871
Switched-Capacitor Voltage Inverters
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= +5V, C1 = C2 = 1µF (MAX870), C1 = C2 = 0.33µF (MAX871),
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values
are at T
A
= +25°C.)
ELECTRICAL CHARACTERISTICS
(V
IN
= +5V, C1 = C2 = 1µF (MAX870), C1 = C2 = 0.33µF (MAX871),
T
A
= -40°C to +85°C
, unless otherwise noted.) (Note 2)
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 conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
Capacitor contribution is approximately 20% of the output impedance [ESR + 1 / (pump frequency x capacitance)].
Note 2:
All -40°C to +85°C specifications are guaranteed by design.
IN to GND ..............................................................+6.0V to -0.3V
OUT to GND ..........................................................-6.0V to +0.3V
C1+ ..............................................................(V
IN
+ 0.3V) to -0.3V
C1-............................................................(V
OUT
- 0.3V) to +0.3V
OUT Output Current ...........................................................50mA
OUT Short Circuit to GND .............................................Indefinite
Continuous Power Dissipation (T
A
= +70°C)
SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW
Operating Temperature Range
MAX870EUK/MAX871EUK ...............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
MAX871
MAX870
R
LOAD
= 500k
Ω
,
T
A
=+25°C
R
LOAD
= 10k
Ω
R
LOAD
= 10k
Ω
T
A
= +25°C
CONDITIONS
mA
2.7
3.8
0.7
1.0
Supply Current
96
99
%
90
Power Efficiency
kHz
325
500
675
1.4
1.0
V
1.5
Minimum Supply Voltage
V
5.5
Maximum Supply Voltage
81
125
169
UNITS
MIN
TYP
MAX
PARAMETER
T
A
= +25°C
T
A
= 0°C to + 85°C
25
MAX871
MAX870
I
OUT
= 5mA
MAX871
R
LOAD
= 10k
Ω
MAX870
CONDITIONS
mA
4.4
1.3
Supply Current
Ω
65
Output Resistance
kHz
225
775
Oscillator Frequency
V
1.6
Minimum Supply-Voltage Range
56
194
UNITS
MIN
TYP
MAX
PARAMETER
T
A
= +25°C
Oscillator Frequency
C1 = C2 = 0.47µF
I
OUT
=
5mA
C1 = C2 = 1µF
Ω
Output Resistance (Note 1)
20
50
MAX870
T
A
= +25°C
C1 = C2 = 0.33µF
20
50
C1 = C2 = 0.22µF
25
MAX871
C1 = C2 = 0.1µF
35
65
T
A
= 0°C to + 85°C
75
MAX870
MAX871
MAX870
MAX871
R
LOAD
=
∞,
T
A
=+25°C
%
98
99.3
Voltage Conversion Efficiency
MAX870
MAX871
R
LOAD
=
∞
%
97
Voltage Conversion Efficiency
95
MAX870
MAX871
R
LOAD
= 10k
Ω
V
5.5
Maximum Supply-Voltage Range