ZXRE252ASA-7 Diodes Inc. / Zetex, ZXRE252ASA-7 Datasheet - Page 3

• Manufacturer Part Number: ZXRE252ASA-7
• Description: Voltage & Current References Shunt Regulator
• Manufacturer: Diodes Inc. / Zetex

Specifications of ZXRE252ASA-7

• Rohs: yes
• Product: Voltage References
• Topology: Shunt References
• Output Voltage: 2.5 V to 36 V
• Initial Accuracy: 1 %
• Average Temperature Coefficient (typ): 34 PPM/ C
• Shunt Current (max): 100 mA
• Maximum Operating Temperature: + 125 C
• Package / Case: SOT23
• Input Voltage: 36 V
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Reference Type: Fixed/Precision
• Series Vref - Input Voltage (max): 2.52 V
• Series Vref - Input Voltage (min): 2.47 V
• Series Vref - Supply Current (max): 4 uA
• Shunt Current (min): 0.065 mA

Electrical Characteristics
Notes:
The average temperature coefficient of the reference input voltage αV
Notes: 6. The dynamic output impedance, R
ZXRE250/ZXRE252
Document number: DS35228 Rev. 3 - 2
Symbol
I
I
ΔV
KA(OFF)
KA(MIN)
ΔI
V
ΔV
V
|Z
I
θ
REF
REF
DEV
REF
KA
JA
REF
KA
5. Deviation of V
|
When the device is programmed with two external resistors R1 and R2, the dynamic output
impedance of the overall circuit, is defined as:
Where:
T2 – T1 = full temperature change.
αV
positive or negative.
Reference voltage
Deviation of reference voltage over
full temperature range (Note 5)
Ratio of the change in reference
voltage to the change in cathode
voltage
Reference input current
I
range (Note 5)
Minimum cathode current for
regulation
Off-state current
Dynamic output impedance (Note 6) V
Thermal Resistance Junction to
Ambient
REF
REF
can be positive or negative depending on whether the slope is
deviation over full temperature
DEV
, and ΔI
Z’
Z’
Z’
αV
αV
Parameter
=
=
=
REF
REF
REF
ΔV
ΔV
ΔV
ΔI
ΔI
ΔI
=
=
are defined as the maximum variation of the values over the full temperature range.
Z
Z
V
V
KA
KA
REF
REF
(T
≈
≈
=
=
V
V
A
@ 25ºC
@ 25ºC
T2 – T1
T2 – T1
Z
Z
Z
DEV
DEV
Z
ΔV
ΔV
= +25°C, unless otherwise noted)
, is defined as:
ΔI
ΔI
KA
KA
KA
KA
KA
KA
KA
1 +
1 +
1 +
X 10
X 10
V
I
V
I
I
I
I
= 10KΩ, R2 = ∞
V
V
SOT23
SOT25
KA
KA
KA
KA
KA
KA
KA
KA
KA
KA
R1
R1
R1
R2
R2
R2
6
6
= 10mA, R1 = 10KΩ, R2 = ∞
= 10mA, R1
= 10mA
= 10mA
= 10mA
ppm/ºC
ppm/ºC
= V
= V
= V
= 36V, V
= V
www.diodes.com
VERY LOW CATHODE CURRENT ADJUSTABLE
REF
REF
REF
REF,
3 of 14
Test Conditions
,
,
REF
f = 0Hz
REF
is defined as:
= 0V
ZXRE250A
ZXRE250B
T
T
T
V
V
T
T
T
A
A
A
A
A
A
KA
KA
= 0 to 70
= -40 to 85
= -40 to 125
= 0 to 70
= -40 to 85
= -40 to 125
= 10V to V
= 36V to 10V
Vmin
Vmin
PRECISION SHUNT REGULATOR
Vmax
Vmax
o
o
ZXRE250/ZXRE252
C
C
o
o
REF
C
C
o
o
C
C
T1
T1
2.470
2.482
Min
V
V
DEV
DEV
= Vmax - Vmin
= Vmax - Vmin
Temperature
Temperature
2.495
2.495
Typ.
0.05
-1.4
380
250
0.8
0.8
0.8
0.2
14
14
40
-1
6
1
2.520
2.507
Max
© Diodes Incorporated
-2.7
1.2
2.5
2.5
0.5
0.5
16
34
34
65
-2
4
May 2011
mV/V
mV/V
o
o
Unit
mV
mV
mV
C/W
C/W
μA
μA
μA
μA
μA
μA
V
V
Ω
T2
T2