Datasheet

MAX6061–MAX6068
Precision, Micropower, Low-Dropout,
High-Output-Current, SOT23 Voltage References
______________________________________________________________________________________ 15
Applications Information
Input Bypassing
For the best line-transient performance, decouple the
input with a 0.1µF ceramic capacitor as shown in the
Typical Operating Circuit. Locate the capacitor as close
to IN as possible. Where transient performance is less
important, no capacitor is necessary.
Output/Load Capacitance
Devices in the MAX6061 family do not require an output
capacitance for frequency stability. In applications
where the load or the supply can experience step
changes, an output capacitor of at least 0.1µF will
reduce the amount of overshoot (undershoot) and
improve the circuit’s transient response. Many applica-
tions do not require an external capacitor, and the
MAX6061 family can offer a significant advantage in
these applications when board space is critical.
Supply Current
The quiescent supply current of the series-mode
MAX6061 family is typically 90µA and is virtually inde-
pendent of the supply voltage, with only an 8µA/V (max)
variation with supply voltage. Unlike series references,
shunt-mode references operate with a series resistor
connected to the power supply. The quiescent current
of a shunt-mode reference is thus a function of the input
voltage. Additionally, shunt-mode references have to
be biased at the maximum expected load current, even
if the load current is not present at the time. In the
MAX6061 family, the load current is drawn from the
input voltage 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. When the supply voltage
is below the minimum specified input voltage (as during
turn-on), the devices can draw up to 400µA beyond the
nominal supply current. The input voltage source must
be capable of providing this current to ensure reliable
turn-on.
Output Voltage Hysteresis
Output voltage hysteresis is the change of output voltage
at T
A
= +25°C before and after the device is cycled
over its entire operating temperature range. Hysteresis
is caused by differential package stress appearing
across the bandgap core transistors. The typical tem-
perature hysteresis value is 130ppm.
Turn-On Time
These devices typically turn on and settle to within 0.1%
of their final value in 50µs to 300µs, depending on the
device. The turn-on time can increase up to 1.5ms with
the device operating at the minimum dropout voltage and
the maximum load.
Chip Information
TRANSISTOR COUNT: 117
PROCESS: BiCMOS
Pin Description
PIN NAME FUNCTION
1 IN Input Voltage
2 OUT Reference Output
3 GND Ground
Typical Operating Circuit
IN
+SUPPLY INPUT (SEE
SELECTOR GUIDE
)
OUT REFERENCE
OUT
1
µ
F *
*CAPACITORS ARE OPTIONAL.
GND
MAX6061-
MAX6068
*
Ordering Information (continued)
PART TEMP. RANGE
PIN-
PACKAGE
TOP
MARK
MAX6067AEUR-T
-40°C to +85°C 3 SOT23-3 FZFS
MAX6067BEUR-T -40°C to +85°C 3 SOT23-3 FZFT
MAX6068AEUR-T
-40°C to +85°C 3 SOT23-3 FZIB
MAX6068BEUR-T -40°C to +85°C 3 SOT23-3 FZIC