MAX6129BEUK50+T Maxim Integrated Products, MAX6129BEUK50+T Datasheet - Page 13

• Manufacturer Part Number: MAX6129BEUK50+T
• Description: IC REF VOLT 5V SOT23-5
• Manufacturer: Maxim Integrated Products

Specifications of MAX6129BEUK50+T

• Reference Type: Series
• Voltage - Output: 5V
• Tolerance: ±1%
• Temperature Coefficient: 100ppm/°C
• Voltage - Input: 5.2 ~ 12.6 V
• Number Of Channels: 1
• Current - Quiescent: 10.5µA
• Current - Output: 4mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Product: Voltage References
• Topology: Series References
• Output Voltage: 5 V
• Initial Accuracy: 1 %
• Average Temperature Coefficient (typ): 100 PPM / C
• Series Vref - Input Voltage (max): 13 V
• Shunt Current (max): 4 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Cathode: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX6129 does not require an input bypass capac-
itor. For improved transient performance, bypass the
input to ground with a 0.1µF ceramic capacitor. Place
the capacitor as close to IN as possible.
The MAX6129 does not require an output capacitor for
stability. The MAX6129 is stable driving capacitive
loads from 0 to 100pF and 0.1µF to 10µF when sourc-
ing current and from 0 to 0.4µF when sinking current. In
applications where the load or the supply can experi-
ence step changes, an output capacitor reduces the
amount of overshoot (undershoot) and improves the cir-
cuit’s transient response. Many applications do not
require an external capacitor, and the MAX6129 offers
a significant advantage in applications where board
space is critical.
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1LSB Maximum Error
PIN
3, 4
1
2
5
NAME
TEMPERATURE
Ultra-Low-Power Series Voltage Reference
GND
COEFFICIENT
OUT
N.C.
IN
(ppm/°C)
Applications Information
______________________________________________________________________________________
Positive Voltage Supply
Ground
Internally connected. Leave
unconnected or connect to ground.
Reference Output
10,000
1000
0.01
100
0.1
10
1
1
Pin Description
Load Capacitance
FUNCTION
Input Bypassing
OPERATING TEMPERATURE RANGE (T
The quiescent supply current of the series-mode
MAX6129 is very small, 5.25µA (max), and is very sta-
ble against changes in the supply voltage with only
1.5µA/V (max) variation with supply voltage. The
MAX6129 family draws load current from the input volt-
age source only when required, so supply current is not
wasted and efficiency is maximized at all input volt-
ages. This improved efficiency reduces power dissipa-
tion and extends battery life.
Output thermal hysteresis is the change of output volt-
age at T
cycled over its entire operating temperature range.
Hysteresis is caused by differential package stress
appearing across the device.
In a data converter application, the reference voltage of
the converter must stay within a certain limit to keep the
error in the data converter smaller than the resolution
limit through the operating temperature range. Figure 1
shows the maximum allowable reference voltage tem-
perature coefficient to keep the conversion error to less
than 1LSB, as a function of the operating temperature
range (T
parameter. The graph assumes the reference-voltage
temperature coefficient as the only parameter affecting
accuracy.
10
Temperature Coefficient vs. Operating
MAX
MAX
A
- T
= +25°C before and after the device is
MIN
- T
) (°C)
Temperature Range for a 1LSB
MIN
) with the converter resolution as a
Output Thermal Hysteresis
Maximum Error
Supply Current
100
16 BIT
10 BIT
12 BIT
14 BIT
18 BIT
8 BIT
20 BIT
13