19-2182; Rev 1; 2/02
Precision, Low-Power, Low-Dropout, UCSP
Voltage Reference
General Description
The MAX6023 is a family of low-dropout, micropower
voltage references in a 5-bump, ultra chip-scale pack-
age (UCSP™). The MAX6023 series-mode (three-termi-
nal) references, which operate with input voltages from
2.5V to 12.6V (1.25V and 2.048V options) or (V
OUT
+
0.2V) to 12.6V (all other voltage options), are available
with output voltage options of 1.25V, 2.048V, 2.5V,
3.0V, 4.096V, 4.5V, and 5.0V. These devices are guar-
anteed an initial accuracy of ±0.2% and 30ppm/°C tem-
perature drift over the -40°C to +85°C extended
temperature range.
UCSPs offer the benefit of moving to smaller footprint
and lower profile devices, significantly smaller than even
SC70 or SOT23 plastic surface-mount packages. The
significantly lower profile (compared to plastic SMD
packages) of the UCSP makes the device ideal for
height-critical applications. Miniature UCSP packages
also enable device placement close to sources and
allow more flexibility in a complex or large design layout.
The MAX6023 voltage references use only 27µA of sup-
ply current. And unlike shunt-mode (two-terminal) refer-
ences, the supply current of the MAX6023 family varies
only 0.8µA/V with supply-voltage changes, translating to
longer battery life. Additionally, these internally compen-
sated devices do not require an external compensation
capacitor and are stable up to 2.2nF of load capaci-
tance. The low-dropout voltage and the low supply cur-
rent make these devices ideal for battery-operated
systems.
♦
No Output Capacitor Needed
♦
±0.2% (max) Initial Accuracy
♦
30ppm/°C (max) Temperature Coefficient
♦
35µA (max) Quiescent Supply Current
♦
0.8µA/V (max) Supply Current Variation with V
IN
♦
100mV Dropout at 500µA Load Current
♦
Line Regulation: 160µV/V (max)
♦
Output Voltage Options: 1.25V, 2.048V, 2.5V, 3.0V,
4.096V, 4.5V, 5.0V
Features
♦
5-Bump UCSP Package (1.0mm
✕
1.5mm
✕
0.3mm)
MAX6023
Ordering Information
PART
MAX6023EBT12-T
MAX6023EBT21-T
MAX6023EBT25-T
MAX6023EBT30-T
MAX6023EBT41-T
MAX6023EBT45-T
MAX6023EBT50-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
BUMP-
PACKAGE
5 UCSP*-5
5 UCSP-5
5 UCSP-5
5 UCSP-5
5 UCSP-5
5 UCSP-5
5 UCSP-5
TOP
MARK
AAO
AAT
AAP
AAS
AAQ
AAR
AAU
Applications
Hand-Held Equipment
Data Acquisition Systems
Industrial and Process Control Systems
Battery-Operated Equipment
Hard-Disk Drives
*UCSP reliability is integrally linked to the user’s assembly meth-
ods, circuit board material, and environment. See the UCSP
Reliability Notice in the UCSP Reliability section of this data sheet
for more information.
Typical Operating Circuit
+SUPPLY INPUT (SEE SELECTOR GUIDE)
IN
Selector Guide
PART
MAX6023EBT12
MAX6023EBT21
MAX6023EBT25
MAX6023EBT30
MAX6023EBT41
MAX6023EBT45
MAX6023EBT50
V
OUT
(V)
1.250
2.048
2.500
3.000
4.096
4.500
5.000
INPUT VOLTAGE (V)
2.5V to 12.6
2.5V to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
(V
OUT
+ 200mV) to 12.6
*CAPACITOR IS OPTIONAL.
GND
*
OUT
REFERENCE
OUT
MAX6023
Pin Configuration appears at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Precision, Low-Power, Low-Dropout, UCSP
Voltage Reference
MAX6023
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
IN .........................................................................-0.3V to +13.5V
OUT .............................................................-0.3V to (V
IN
+ 0.3V)
Output Short Circuit to GND or IN (V
IN
< 6V) ............Continuous
Output Short Circuit to GND or IN (V
IN
≥
6V) .........................60s
Continuous Power Dissipation (T
A
= +70°C)
5-Bump UCSP (derate 3.4mW/°C above +70°C)........273mW
Operating Temperature Range ..........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Bump Temperature (soldering, 10s)................................+300°C
Note 1:
This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device
can be exposed to during board-level solder attach and rework. This limit permits only the use of solder profiles recom-
mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow.
Preheating is required. Hand or wave soldering is not allowed.
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.
ELECTRICAL CHARACTERISTICS–MAX6023EBT12 (V
OUT
= 1.250V)
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
OUTPUT
Output Voltage
Initial Voltage Accuracy
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Short-Circuit Current
Temperature Hysteresis
Long-Term Stability
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply-Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
∆I
IN
/∆V
IN
2.5V
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
2.5
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆I
OUT
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= +5V ±100mV, f = 120Hz
To V
OUT
within 0.1% of final value,
C
OUT
= 50pF
(Note 3)
0
25
65
86
30
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
V
OUT
T
A
= +25°C
T
A
= +25°C
(Note 3)
2.5V
≤
V
IN
≤
12.6V
0
≤
I
OUT
≤
400µA
-400µA
≤
I
OUT
≤
0
Short to GND
Short to IN
(Note 4)
1000hr at T
A
= +25°C
1.247
-0.24
10
10
0.4
0.5
4
10
90
30
1.250
1.253
+0.24
30
80
1.0
1.1
V
%
ppm/°C
µV/V
µV/µA
mA
ppm
ppm/
1000hr
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout, UCSP
Voltage Reference
ELECTRICAL CHARACTERISTICS–MAX6023EBT21 (V
OUT
= 2.048V)
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
OUTPUT
Output Voltage
Initial Voltage Accuracy
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Short-Circuit Current
Temperature Hysteresis
Long-Term Stability
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply-Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
∆I
IN
/∆V
IN
2.5V
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
2.5
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆I
OUT
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= +5V ±100mV, f = 120Hz
To V
OUT
within 0.1% of final value,
C
OUT
= 50pF
(Note 3)
0
40
105
82
85
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
V
OUT
T
A
= +25°C
T
A
= +25°C
(Note 3)
2.5V
≤
V
IN
≤
12.6V
0
≤
I
OUT
≤
500µA
-500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
(Note 4)
1000hr at T
A
= +25°C
2.044
-0.20
10
20
0.5
0.3
4
10
90
50
2.048
2.052
+0.20
30
100
1.4
0.70
V
%
ppm/°C
µV/V
µV/µA
mA
ppm
ppm/
1000hr
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX6023
_______________________________________________________________________________________
3
Precision, Low-Power, Low-Dropout, UCSP
Voltage Reference
MAX6023
ELECTRICAL CHARACTERISTICS-MAX6023EBT25 (V
OUT
= 2.500V)
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
OUTPUT
Output Voltage
Initial Voltage Accuracy
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Short-Circuit Current
Dropout Voltage
Temperature Hysteresis
Long-Term Stability
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply-Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
∆I
IN
/∆V
IN
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆I
OUT
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= +5V ±100mV, f = 120Hz
To V
OUT
within 0.1% of final value,
C
OUT
= 50pF
(Note 3)
0
60
125
82
85
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
I
SC
V
OUT
T
A
= +25°C
T
A
= +25°C
(Note 3)
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
0
≤
I
OUT
≤
500µA
-500µA
≤
I
OUT
≤
0
Short to GND
Short to IN
(Note 4)
1000hr at T
A
= +25°C
2.495
-0.20
10
25
0.5
0.3
4
10
100
90
50
200
2.5
2.505
+0.20
30
140
1.4
0.8
V
%
ppm/°C
µV/V
µV/µA
mA
mV
ppm
ppm/
1000hr
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
(V
IN
- V
OUT)
I
OUT
= 500µA (Note 5)
4
_______________________________________________________________________________________
Precision, Low-Power, Low-Dropout, UCSP
Voltage Reference
ELECTRICAL CHARACTERISTICS–MAX6023EBT30 (V
OUT
= 3.000V)
(V
IN
= +5V, I
OUT
= 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
Output Voltage
Initial Voltage Accuracy
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Dropout Voltage
Short-Circuit Current
Temperature Hysteresis
Long-Term Stability
DYNAMIC CHARACTERISTICS
Noise Voltage
Ripple Rejection
Turn-On Settling Time
Capacitive-Load Stability Range
INPUT
Supply-Voltage Range
Supply Current
Change in Supply Current
V
IN
I
IN
∆I
IN
/∆V
IN
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
Guaranteed by line-regulation test
V
OUT
+ 0.2
27
0.8
12.6
35
2.0
V
µA
µA/V
e
OUT
∆V
OUT
/
∆V
IN
t
R
C
OUT
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
IN
= +5V ±100mV, f = 120Hz
To V
OUT
within 0.1% of final value,
C
OUT
= 50pF
(Note 3)
0
75
150
82
85
2.2
µVp-p
µV
RMS
dB
µs
nF
∆V
OUT
/
time
∆V
OUT
/
∆V
IN
∆V
OUT
/
∆I
OUT
(V
IN
-
V
OUT
)
I
SC
SYMBOL
V
OUT
T
A
= +25°C
T
A
= +25°C
(Note 3)
(V
OUT
+ 0.2V)
≤
V
IN
≤
12.6V
0
≤
I
OUT
≤
500µA
-500µA
≤
I
OUT
≤
0
I
OUT
= 500µA (Note 5)
Short to GND
Short to IN
(Note 4)
1000hr at T
A
= +25°C
CONDITIONS
MIN
2.994
-0.20
10
40
0.7
0.4
100
4
10
90
50
TYP
3.000
MAX
3.006
+0.20
30
140
1.5
0.8
200
UNITS
V
%
ppm/°C
µV/V
µV/µA
mV
mA
ppm
ppm/
1000hr
MAX6023
_______________________________________________________________________________________
5
