Datasheet CL432D, CL432VS, CL432S, CL432LP Datasheet (Calogic LLC)

CORPORATION

1.25VPrecision Adjustable

Shunt Reference / Amplifier

Preliminary Product Information

CL432

FEATURES

•• T emperatur e- Co m p ensated: 50ppm/

o

C

•• Trimmed 0.5% Bandgap Reference

•• Internal Amplifier with 150mA Capability

•• Nominal Temperature Range Extended to 105

o

C

•• Low Frequenc y Dynami c Output Imp edan ce: < 150m

•• Low Output Noise

PIN CONFIGU R ATIO N (Top View)

DESCRIPTION

Calogic’s CL432 is a 3-terminal Adjustable Shunt Regulator
highly accurate 1.25V bandgap reference with a 0.5%
tolerance. The device offers thermal stability, wide operating
current (100mA) and an extended temperature range of 0

o

C for operation in power supply applications. The CL432

105

o

to

offers a wide operating voltage range of up to 18V and is an
excellent choice for voltage reference requirements in an
isolated feedback circuit for 3.0V to 3.3V switching mode
power supplies. The tight tolerance guarantees a lower
design cost for the power supply manufacturer by virtually
eliminating the need for an extra power supply manufacturing
process of the power supply.

The device is housed in several package options to meet the
designers crite ria.

ORDERING INFORMATION
Part Package Temperature Range

o

CL432LP TO-92 0 to 105
CL432D 8-Pin Plastic SOI C 0 to 105
CL432VS SOT-23 0 to 105
CL432S SOT-89 0 to 105

C

o

C

o

C

o

C

ANODE

TO-92 (LP)

SOT-23 (VS)

CATHODE

ANODE

REFERENCE

1G-33

CATHODE

REFERENCE

CATHODE

ANODE

ANODE

N/C

1J-22

1

2

3

4

SOT-89 (S)

SOIC (D)

8

REFERENCE

7

ANODE

6

ANODE

5

N/C

CATHODE

ANODE

REFERENCE

1G-35

1G-34

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CL432

CORPORATION

ABSOLUTE MAXIMUM RATINGS

SYMBOL PARAMETER RATING UNITS

V

KA

I

AK

I

KA

I

REF

P

D

T

J

T

STG

T

L

Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permane nt damag e to the device. This is a stress r ating
only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification
is not implied. Exposure to ab solut e ma ximu m rati ng conditi on s for ext ende d peri od s may affe ct reliab ili ty.

RECOMMENDED CONDITIONS

SYMBOL P ARAMETER RATING UNIT

V

KA

I

K

Cathode-Anode Reverse Breakdown 18 V
Anode-Cathode Forward Current 1 A
Operating Cathode Current 100 mA
Reference Inp ut Current 1 mA
Continuou s Power at 25oC

TO-92
8L SOIC
SOT-23
SOT-89

775
750

1000

200
Junction Temperature 150
Storage Temperature –65 to 150
Lead Temperature, Soldering 10 Seconds 300

TYPICAL THERMAL RESISTANCES

Cathode Voltage V

to 18 V

REF

Cathode Current 10 mA

PACKAGE θ

TO-92 160
SOIC 175
SOT-23 575
SOT-89 110

JA

o

C/W 80oC/W 6.3mW/oC

o

C/W 45oC/W 5.7mW/oC

o

C/W 150oC/W 1.7mW/oC

o

C/W 8oC/W 9.1mW/oC

θ

JC

mW
mW
mW
mW

o

C

o

C

o

C

TYPICAL DERATING

FUNCTIONAL BLOCK DIAGRAM

CATHODE (K)

REFERENCE (R)

+
–

+

1.25V

–

ANODE (A)

1J-23

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CL432

CORPORATION

ELECTRICAL CHARACTERISTICS

Electrica l characte ri stics are gua ran te ed over full junction temp erature range (0 to 105oC). Ambient temperature must be derated based on
power dissipation and package thermal characteristics. The conditions are: VKA = V

SYMBOL PARAMETER MIN TYP MAX UNIT TEST CONDITION

and IK = 10mA unless otherwise stated.

REF

V

REF

V

REF

V

REF

V

REF

I

REF

I

REF

I

K(MIN)

I

K(MIN)

*Tempera tu re devia tio n is defined as the ma ximu m devia tio n of the refere nce over the given tem pe rat ure range and does not im ply an
incremental deviation at any given temperature.

Output Voltage 1.244 1.250 1.256 V IK = 10mA, TJ = 25oC, VK = V
Line Regulation 10 15 mV VK = 1. 25 to 15 V
Load Regulation 3 6 mV IK = 1 to 100mA
T emperature Deviation 2 6 mV 0 < TJ < 105oC
Reference Input Current 3 6 µA
Reference Input Current Temperature

Coefficient

0.3 0.6 µA 0 < T

< 105oC

J

Min. Cathode Current for Regulation 0.6 1 mA
Off State Leakage 0.04 500 nA V

= 0V, VKA = 18V

REF

TYPICAL PERFORMANCE CU R VES (Not available at time of publishing)

REF

Calogic reserves the right to make changes without further notice to any products described herein to improve reliability, function,
or design. C alogic does not assume any liability arising out of the application or use of any product or circuit described herein;
neither does it convey any license under its patent rights or the right of others. Calogic products are not authorized for use as
components in life support devices or systems intended for surgical implant into the body or intended to support or sustain life.
Buyer agrees to notify Calogic of any such intended end use whereupon Calogic will determine availability and suitability of its
products for the intended use. Calogic and the Calogic logo are trademarks of Calogic.

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CL432

CORPORATION

Inform at ion furni shed by Calogic is believed to be accurate and reliable. Howe ver, no responsibility is assum ed for its use: nor for any in fring eme nt of pate nts or other
rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Calogic.

CALO GIC CORP OR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CL432

2.54

2.46
–60

1G-44

TEMPERATURE COEFFICIENT AS

A FUNCTION OF TRIM VALUE

–30

2.47

2.48

2.49

2.50

2.51

2.52

2.53

0

30 60 90 120

V

REF

– REFERENCE VOLTAGE (V)

– AMBIENT TEMPERATURET

A

V

KA

= V

REF

I

K

= 10mA

V

REF

= 2.503V AT 25˚C

TYPICAL PERFORMANCE CU R VES

CORPORATION

LOW CURRENT OPERATING

900
800
700
600
500
400
300
200
100

– CATHODE CURRENT (µA)

0

K

I

–100
–200

–1.0 3.0

100

10

1

CHARACTERISTICS

V= V

REFKA

TEMPERATURE RANGE: –55 to 125˚C

125˚C

25˚C

–55˚C

1.00 2.0

VKA– CATHODE VOLTAGE (V)

OFF STATE LEAKAGE

VKA= 36V

= 0V

V

REF

1G-41

HIGH CURRENT OPERATING

CHARACTERISTICS

VKA= V

REF

TEMPERATURE RANGE: –55 to 125˚C

–2 3

– CATHODE VOLTAGE (V)V

KA

– CATHODE CURRENT (mA)

I

K

150
125
100

75
50
25

0
–25
–50
–75

–100

210–1

1G-42

CURRENT (nA)

– OFF STATE CATHODEI

0.1

off

Z

0.01
–30 0 306090120

–60

– AMBIENT TEMPERATURE (˚C)T

A

3.0
R1 = 10kΩ

R2 = ∞

2.5

I

K

2.0

1.5

1.0

CURRENT (µA)

– REFERENCE INPUTI

REF

0.5

0
–60

TA– AMBIENT TEMPERATURE (˚C)

= 10mA

–30 0 306090120

REFERENCE

INPUT CURRENT

1G-43

1G-45

0

–10

–20

–30

VOLTAGE (mV)

– CHANGE IN REFERENCEV

–40

REF

IK= 10mA

TEMPERATURE RANGE: –55 to 125˚C

–50

030

REFERENCE VOLTAGE

LINE REGULATION

–55˚C

0˚C

25˚C

75˚C

125˚C

3 6 9 12 15 18 21 24 27

– CATHODE VOLTAGE (V)V

KA

1G-46

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CORPORATION

TYPICAL PERFORMANCE CU R VES (cont in ued)

NOISE VOLTAGE

VKA= V

REF

I

= 10mA

K

= 25˚C

T

A

f – FREQUENCY (Hz)

10k1k100

NOISE VOLTAGE nV/ Hz

70

60

50

40

30

20

10

0

10

100k

1G-47

– DYNAMIC IMPEDANCE (Ω)
Z

KA

LOW FREQUENCY DYNAMIC

0.150

0.125

0.100

0.075

0.050

0.025

0.0

OUTPUT IMPEDANCE

VKA= V

REF

= 1 TO 100mA

I

KA

f ≤ 1kHz

–30 0 306090120

–60

– FREE AIR TEMPERATURET

A

CL432

1G-48

70

60

50

40

100

1.0

0.1

– DYNAMIC IMPEDANCE (Ω)

KA

Z

0.01

SMALL SIGNAL GAIN

vs FREQUENCY

TA= 25˚ C

= 10mA

I

K

10

1k

DYNAMIC OUTPUT

IMPEDANCE

TA= 25˚C

= 1 TO 100mAI

K

f – FREQUENCY (Hz)

9µF

10M

15k

1G-49

OUT

I

K

230Ω

1M100k10k

GAIN (dB)

– SMALL SIGNAL VOLTAGE

V

A

30

20

10

8.25k
GND

1H-01

0

1k

100k10k

f – FREQUENCY (Hz)

1M

10M

1G-50

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

CL432

1H-03

GND

OUT

220

Ω

INPUT

MONITOR

50

Ω

fP= 100kHz

TYPICAL PERFORMANCE CU R VES (cont in ued)

CORPORATION

6

PULSE RESPONSE

INPUT

5

4

3

OUTPUT

2

1

0

INPUT AND OUTPUT VOLTAGES (V)

–1

0

t – TIME (µs)

STABILITY BOUNDARY

100

A: VKA= V

B: VKA= 5V AT IK= 10mA

90

C: V

80

D: V

70
60
50
40
30
20

– CATHODE CURRENT (mA)

K

I

10

TA= 25˚C

0

10 10

CONDITIONS

REF

= 10V AT IK= 10mA

KA

= 15V AT IK= 10mA

KA

STABILITY

REGION

– LOAD CAPACITANCE (pF)C

L

A
B

D

121234567891011

1H-02

150Ω

I

K

C

C

L

10k

1H-05

7

6543210

101010101010

1H-04

CALOG IC CORPOR ATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]