MAX6143AASA33+ Maxim Integrated Products, MAX6143AASA33+ Datasheet - Page 14

• Manufacturer Part Number: MAX6143AASA33+
• Description: IC REF VOLT W/TEMP SENS 8SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX6143AASA33+

• Reference Type: Series
• Voltage - Output: 3.3V
• Tolerance: ±0.06%
• Temperature Coefficient: 3ppm/°C
• Voltage - Input: 5.3 ~ 40 V
• Number Of Channels: 1
• Current - Quiescent: 500µA
• Current - Output: 30mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Product: Voltage References
• Topology: Series References
• Output Voltage: 3.3 V
• Initial Accuracy: 0.06 %
• Average Temperature Coefficient (typ): 3 PPM / C
• Series Vref - Input Voltage (max): 40 V
• Series Vref - Input Voltage (min): 4.5 V
• Shunt Current (max): 30 mA
• Maximum Operating Temperature: + 125 C
• Input Voltage: 4.5 V to 40 V
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Series Vref - Supply Current (max): 650 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Cathode: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX6143 provides a temperature output propor-
tional to die temperature. TEMP can be calculated from
the following formula:
where T
n = the temperature multiplier,
T
Self-heating affects the die temperature and converse-
ly, the TEMP output. The TEMP equation assumes the
output is not loaded. If device power dissipation is neg-
ligible, then T
For the best line-transient performance, decouple the
input with a 0.1µF ceramic capacitor as shown in the
Typical Operating Circuit. Place the capacitor as close
to IN as possible. When transient performance is less
important, no capacitor is necessary.
The MAX6143 does not require an output capacitor for
stability and is stable with capacitive loads up to 100µF.
In applications where the load or the supply can experi-
ence step changes, a larger output capacitor reduces
the amount of overshoot (undershoot) and improves the
circuit’s transient response. Place output capacitors as
close to the device as possible for best performance.
High-Precision Voltage Reference with
Temperature Sensor
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
14
A
= the ambient temperature.
______________________________________________________________________________________
TEMPERATURE
J
COEFFICIENT
(ppm/°C)
= the die temperature,
n
=
J
≈ T
Applications Information
V
Bypassing/Output Capacitance
TEMP (V) = T
TEMP
10,000
A
1000
0.01
100
.
0.1
10
1
(
1
at T
T
0
J
=
J
T
0
(°K) x n
)
≅
1 9
.
Temp Output
mV K
OPERATING TEMPERATURE RANGE (T
/
°
10
The MAX6143 consumes 340µA of quiescent supply
current. This improved efficiency reduces power dissi-
pation and extends battery life.
The active-low shutdown feature reduces supply cur-
rent to 0.01µA (typ), further extending battery life.
Connect SHDN to GND to activate shutdown. Connect
SHDN to IN for normal operation.
Thermal hysteresis is the change in the output voltage
at T
over its entire operating temperature range. Hysteresis
is caused by differential package stress appearing
across the bandgap core transistors. The typical ther-
mal hysteresis value is 120ppm.
The MAX6143 typically turns on and settles to within
0.1% of the preset output voltage in 150µs (2.5V
output). The turn-on time can increase up to 150µs with
the device operating at a 1µF load.
The MAX6143 features a short-circuit-protected output.
Internal circuitry limits the output current to 60mA when
short circuiting the output to ground. The output cur-
rent is limited to 3mA when short circuiting the output
to the input.
MAX
A
- T
= +25°C before and after the device is cycled
MIN
) (°C)
Short-Circuited Outputs
Thermal Hysteresis
100
16-BIT
10-BIT
12-BIT
14-BIT
18-BIT
20-BIT
8-BIT
Supply Current
Turn-On Time
Shutdown