ETC1 CM431LGCCM2R3 Low voltage adjustable shunt regulator Datasheet

CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
GENERAL DESCRIPTION
FEATURES
The CM431L is a low voltage three terminal adjustable shunt
‹
LOW voltage operation(1.24V)
regulator with thermal stability guaranteed over temperature.
‹
Adjustable output voltage V0 = VREF to 20V
The output voltage can be adjusted to any value from 1.24V
‹
Wide operating current range 60μA to 100mA
(VREF)to 20V with two external resistors. The CM431L has a
‹
LOW dynamic output impedance 0.25Ω typ.
typical dynamic output impedance of 0.25Ω. Active output
‹
Trimmed bandgap design ± 0.5%
circuitry provides a very sharp turn on characteristic, making
the CM431L an excellent replacement for zener diodes.
APPLICATIONS
The CM431L shunt regulator is available in four voltage
tolerances(0.5%, 0.7%, 1.0% and 2.0%)and four package
options (SOT-23-3, SOT-23-5, SOT-89, TO-92, and SOP-8).
Four voltage tolerances allow the designer the opportunity to
select the proper cost/tolerance for their application.
‹
Linear Regulators
‹
Adjustable Supplies
‹
Switching Power Supplies
‹
Battery Operated Computers
‹
Instrumentation
‹
Computer Disk Drivers
PIN CONFIGURATION
TO-92
Front View
SOT-23-3
Top View
CATHODE
ANODE
REF
3
Pin 1
Pin 2
Pin 3
CM431LXCM233
REF
CATHODE
ANODE
CM431LXCM2R3
CATHODE
REF
ANODE
Suffix “X”: Grade “A”, “B”, “C”, or “D”
1
3
NC
NC
1
2
2006/02/10 Rev. 5
CATHODE REF
4
ANODE
5
SOP-8
Top View
SOT-89
Top View
CATHODE
SOT-23-5
Top View
ANODE
2
REF
1
2
1
2
3
1
CATHODE
REF
8
2
NC
NC
7
3
NC
ANODE
6
4
NC
NC
5
3
Champion Microelectronic Corporation
Page 1
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
BLOCK DIAGRAM
BLOCK DIAGRAM
SYMBOL DIAGRAM
Cathode
Ref
Anode
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 2
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
ORDERING INFORMATION
PACKAGE
TOLERANCE
0.5%
0.7%
1.0%
2.0%
T/R Quantity
SOT-23-3(1)
CM431LACM233
CM431LDCM233
CM431LBCM233
CM431LCCM233
TR=3K
SOT-23-3(1)
CM431LACM2R3
CM431LDCM2R3
CM431LBCM2R3
CM431LCCM2R3
TR=3K
SOT-23-5(1)
CM431LACM235
CM431LDCM235
CM431LBCM235
CM431LCCM235
TR=3K
SOT-89(1)
CM431LACM89
CM431LDCM89
CM431LBCM89
CM431LCCM89
TR=1K
TO-92(2)
CM431LACN
CM431LDCN
CM431LBCN
CM431LCCN
TA=2K
SOP-8
CM431LACS
CM431LDCS
CM431LBCS
CM431LCCS
CM431LGACM233* CM431LGDCM233*
CM431LGBCM233*
CM431LGCCM233*
TR=3K
SOT-23-3(1) CM431LGACM2R3* CM431LGDCM2R3*
CM431LGBCM2R3*
CM431LGCCM2R3*
TR=3K
SOT-23-5(1)
CM431LGACM235* CM431LGDCM235*
CM431LGBCM235*
CM431LGCCM235*
TR=3K
SOT-89(1)
CM431LGACM89*
CM431LGDCM89*
CM431LGBCM89*
CM431LGCCM89*
TR=1K
TO-92(2)
CM431LGACN*
CM431LGDCN*
CM431LGBCN*
CM431LGCCN*
TA=2K
SOP-8
CM431LGACS*
CM431LGDCS*
CM431LGBCS*
CM431LGCCS*
SOT-23-3(1)
Notes:
(1) Add suffix ″TR″for Tape & Reel.
(2) Add suffix ″TA″for Tape Ammo.
(3)
*Note: Add suffix “G” for Pb Free Product
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 3
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
ABSOULTE MAXIMUM RATINGS
Parameter
Symbol
Maximum
Units
Cathode Voltage
VZ
20
V
Continuous Cathode Current
IZ
100
mA
IREF
3
mA
TJ
-40 to +150
℃
TSTG
-65 to + 150
℃
Reference Current
Operating Junction Temperature Range
Storage Temperature Range
θJA
Thermal Resistance
℃/W
TO-92
160
SOT-23-3
410
SOT-23-5
256
SOT-89
110
SOP-8
175
Power Dissipation at TA =25℃
PD
TO-92
0.78
SOT-23-3
0.30
SOT-23-5
0.30
SOT-89
1.00
SOP-8
0.71
Lead Temperature(Soldering)10 seconds
TLEAD
250
W
℃
RECOMMENDED OPERATING CONDITION
Min
Max
Symbol
Cathode Voltage. Vz
VREF
16
V
Cathode Current. Iz
80
100
mA
Operating Temperature
0
105
℃
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 4
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
ELECTRICAL CHARACTERISTICS
Parameter
Reference
Voltage
VREF Temp
Deviation
Ratio of Change
in
VREF to Change in
Cathode Voltage
Reference Input
Current
IREF Temp
Deviation
CM431L 0.5%
CM431L 0.7%
Symbol
Condition
MIN
TYP
MAX MIN TYP MAX UNITS
VREF Vz=VREF ,
TA=25℃
1.234 1.240 1.246 1.231 1.240 1.249
Iz=10mA
V
1.258 1.222
1.258
TA=-40 to+85℃ 1.222
VDEV
TA=-40 to +85℃, Vz= VREF
Iz=10mA
10
25
10
25
mV
-1.0
-2.7
-1.0
-2.7
mV/V
0.15
0.5
0.15
0.5
μA
0.1
0.4
0.1
0.4
μA
0.5
0.5
2.0
2.0
0.5
0.5
2.0
2.0
μA
0.25
0.4
0.25
0.4
Ω
60
80
60
80
μA
ΔVREF Iz=10mA, ΔVZ=16V to VREF
ΔVz
IREF
R1=10kΩ, R2=∞, Iz=10mA
IREF(DEV) TA=-40 to +85℃ R1=10 kΩ
R2= ∞, Iz=10mA
Off State Cathode
Current
Dynamic Output
Impedance
Iz(off)
Minimum
Operating
Current
IZ(min) VZ= VREF
2006/02/10 Rev. 5
Unless specified, TA = 25℃
rz
VREF=0V
VZ=6V
VZ=16V
f < 1KHz, VZ= VREF
Iz=100μA to 100 mA
Champion Microelectronic Corporation
Page 5
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
Reference
Voltage
VREF Temp
Deviation
Ratio of Change
in VREF to Change
in Cathode
Voltage
Reference Input
Current
IREF Temp
Deviation
CM431L 1%
CM431L 2%
Symbol
Condition
MIN
TYP MAX MIN TYP MAX
VREF Vz=VREF ,
TA=25℃
1.228 1.240 1.252 1.215 1.240 1.265
Iz=10mA
1.265 1.200
1.280
TA=-40 to+85℃ 1.215
VDEV
TA=-40 to +85℃, Vz= VREF
Iz=10mA
UNITS
V
10
25
10
35
mV
-1.0
-2.7
-1.0
-2.7
mV/V
0.15
0.5
0.15
0.5
μA
0.1
0.4
0.1
0.4
μA
0.5
0.5
2.0
2.0
0.5
0.5
2.0
2.0
μA
0.25
0.4
0.25
0.4
Ω
60
80
60
60
μA
ΔVREF Iz=10mA, ΔVZ=16V to VREF
ΔVz
IREF
R1=10kΩ, R2=∞, Iz=10mA
IREF(DEV) TA=-40 to +85℃ R1=10 kΩ
R2= ∞, Iz=10mA
Off State Cathode
Current
Dynamic Output
Impedance
Iz(off)
Minimum
Operating
Current
IZ(min) VZ= VREF
2006/02/10 Rev. 5
Unless specified, TA = 25℃
rz
VREF=0V
VZ=6V
VZ=16V
f < 1KHz, VZ= VREF
Iz=100μA to 100 mA
Champion Microelectronic Corporation
Page 6
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
TYPICAL CHARACTERISTICS
Cathode Current vs. Cathode Voltage
300
150
200
100
100
50
Iz(mA)
Iz(uA)
Cathode Current vs. Cathode Voltage
0
0
-100
-50
-200
-100
-300
-1
-0.5
0
0.5
1
Vz=VREF
TA=25℃
-150
-1.5
1.5
-1
-0.5
Vz(V)
0
0.5
1
1.5
Vz(V)
Reference Input Current vs. Junction
Tem perature
Reference Voltage vs. Junction Temperature
1.248
Iz=10mA
1.246
150
125
1.242
1.24
Iz=80uA
1.238
IREF(nA)
VREF(V)
1.244
100
75
1.236
50
-50
1.234
-50
-25
0
25
50
75
100 125 150
-25
0
25
Ratio of Delta Ref. Voltage to Delta Cathode
Voltage vs. Junction Tem perature
Off State Cathode Current vs. Junction
Temperature
250
VREF = 0V
200
Iz(off) (nA)
△ V REF/△ V z (-mV/V)
75
TJ ( ℃ )
TJ(℃)
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-50
50
Iz=10mA
R1=10kΩ
R2=∞
100 125 150
Iz=10mA
△ Vz=16V to V REF
-25
0
25
50
75
100 125 150
150
100
50
0
-50
-25
TJ ( ℃ )
2006/02/10 Rev. 5
0
25
50
75
100
125
150
TJ(℃)
Champion Microelectronic Corporation
Page 7
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
TYPICAL CHARACTERISTICS (Conti)
50
PF
0.
00
2u
F
0.
00
5u
F
0.
00
8u
F
0.
02
uF
0.
05
uF
0.
08
uF
0.
2u
F
0.
5u
F
0.
8u
F
Iz (mA)
Stability Boundary Condition
3.5
3
2.5
2
1.5
1
0.5
0
CL
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 8
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
APPLICATION CIRCUIT
Notes for Application Circuit:
1)
Set VOUT according to the following equation:
VOUT =VREF ( 1 + R1/R2 ) +IREF R1
2)
Choose the value for R as follows:
• The maximum limit for R should be such that the
cathode current, Iz, is greater than the minimum
operating current(80μA)at VIN(min).
• The minimum limit for R should be such that Iz
does not exceed 100mA under all load conditions,
and the instantaneous turn-on value for Iz does not
exceed 150mA. Both of the following conditions
must be met:
Rmin ≥
VIN(max)
(to limit instantaneous turn-on Iz)
150mA
Rmin ≥
VIN(max)–VOUT
(to limit Iz under normal operating conditions)
IOUT(min)+ 100mA
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 9
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
PACKAGE DIMENSION
TO-92
θ
A
A1
b
D
A
D1
E
L
e
θ
θ1
A1
L
θ1
e
D
D1
b
E
`
3-Pin Plastic TO-92 Carrier Dimensions
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 10
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
PACKAGE DIMENSION (CONTINUED)
SOT-23-3
D
3
b1
With Plating
c
c1
A
A1
E1
E
A2
b
b
Base Metal
b1
c
Section B-B
c1
D
E
1
2
e
E1
b
e1
L
L1
e
θ1
e1
θ
θ1
θ
A2
A
θ2
θ2
A1
L
L1
See Section B-B
SOT-23-5
D
5
4
b1
With Plating
c
c1
A
A1
E1
E
A2
b
b
Base Metal
b1
c
Section B-B
c1
D
E
1
e
2
3
e1
E1
b
L
L1
e
θ1
e1
θ
θ1
θ
A2
A
θ2
θ2
A1
L
2006/02/10 Rev. 5
See Section B-B
L1
Champion Microelectronic Corporation
Page 11
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
PACKAGE DIMENSION (CONTINUED)
SOT-89
D
D1
L
5°
H
E
φ1.0
C
e
e1
A
8°
L
b
b1
C
D
D1
H
E
e1
b
b1
b
e
8-PIN SOP (S08)
PIN 1 ID
θ
θ
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 12
CM431L
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any
integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information
to verify, before placing orders, that the information being relied on is current.
A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or
environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for
use in life-support applications, devices or systems or other critical applications.
Use of CMC products in such applications is
understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the
customer should provide adequate design and operating safeguards.
HsinChu Headquarter
Sales & Marketing
5F, No. 11, Park Avenue II,
Science-Based Industrial Park,
HsinChu City, Taiwan
11F, No. 306-3, SEC. 1, Ta Tung Road,
Hsichih, Taipei Hsien 221, Taiwan
T E L : +886-3-567 9979
T E L : +886-2-8692 1591
FA X : +886-3-567 9909
FA X : +886-2-8692 1596
2006/02/10 Rev. 5
Champion Microelectronic Corporation
Page 13
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