Datasheet CLM2931AS-5, CLM2931AS-4.5, CLM2931AS-4, CLM2931AS-3.5, CLM2931AS-3.3 Datasheet (Calogic LLC)

Low Dropout

Voltage Regulators

CLM2931

FEATURES

••

5V, 3.3V, 3.5V, 4.0V, and 4.5V V ers io ns Available

••

Outpu t Curre nt in Exc ess of 100mA

••

Input-Out pu t Dif feren tial is Less Than 0.6V

••

Mirror-I ma ge Insert ion Pr ot ect i on

••

Internal Thermal Overload Protection

••

Av ailable as Ad justable with T TL Compa tible Sw i tch

••

Similar to Industry Standard LM2931

••

Reverse Bat tery Pr ot ect io n

••

Short Cir cuit Protectio n

••

60V Load Dump Prot ect i on

••

-50V Revers e Transient Prote ct ion

APPLICATIONS

••

Portable I nst ru me nt atio n

••

Radio Control Systems

••

Cordless Telephones

PRODUCT DESCRIPTION

The CLM2931 is a positive low power voltage regulator. This
device is an excellent choice for use in battery-powered
applications such as cordless telephones, radio control
systems, and portable computers. The CLM2931 features very
low quiescent current (0.4mA) and very lo w drop output voltage
(typ. 50mV at lig ht load and 300mV at 100mA). ot her features
include the logic-compatible on/off input which enables the
regulator to be switched on and off .

The regulator output voltage may be internally pin-strapped
for a 5V, 3V, 3.3V, 3.5V, 4.0V, 4.5V or programmed from 3V to
24V with an external pair of resistors. Using Calogic’s design,
process and testing technique make the CLM2931 superior
over similar product s.

ORDERING INFORMATION
P ART PACKAGE TEMPERATURE RANG E

CLM2931AS-X Plastic SOIC (8-Pin) Industrial

X = Output Voltage, 5V = standard product, for all other ranges
contact factory.

CORPORATION

PIN CONNECTIONS

ADJ.

1
2
3

8
7
6

4

5 ON/OFF

CLM2931

1M-07

8-PIN SRFACE MOUNT, ADJ. OUTPUT

GND

GND

INPUT

GND

GND

OUTPUT

TOP VIEW

NC

1

2

3

8

7

6

4

5

NC

CLM2931

8-PIN SURFACE MOUNT, FIX OUTPUT

GND

GND

INPUT

GND

GND

OUTPUT

TOP VIEW

CALOGIC CORPORATION, 237 Whitn ey Place, Fremont, Cal ifornia 94539, Telephone: [phone], FAX: [phone]

ABSOLUTE MAXIMUM RATINGS

Power Dissipation . . . . . . . . . . . . . . . . . . . . . Internally Limited

Lead Temp. (Soldering, 5 Seconds) . . . . . . . . . . . . . . . 260

o

C

Storage Tem per atur e Ra nge. . . . . . . . . . . . . . . -65 to +150

o

C

Operating Junct ion Te mper at ure Ran ge . . . . . . . -40 to +85

o

C

Input Supply Vo ltag e . . . . . . . . . . . . . . . . . . . . . . 0.30 to +26V

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2KV

CLM2931

CORPORATION

CALOGIC CORPORATION, 237 Whitn ey Place, Fremont, Cal ifornia 94539, Telephone: [phone], FAX: [phone]

ELECTRICAL CHARACTERISTICS: V

S

= 14V, TA = 25oC, IO = 10mA, C2 = 1 00µF , unles s otherwise spe cified . (Note 1)

PARAMETER

CLM2931A CLM2931

UNITS

CONDITIONS

(Note 2)

MIN TYP MAX MIN TYP MAX

3V VERSION CLM2931A-3 CLM2931-3

Output Voltage

2.94

2.88

3.0

3.0

3.06

3.12

2.91

2.85

3.0

3.0

3.09

3.15

V
V 6V<V

IN

<26V, IO = 100mA Over Temp.

3.3V VERSION CLM2931A-3.3 CLM2931-3.3

Output Voltage

3.23

3.20

3.30

3.30

3.36

3.39

3.20

3.16

3.30

3.30

3.39

3.43

V
V 6V<V

IN

<26V, IO = 100mA Over Temp.

5V VERSION CLM2931A-5 CLM2931-5

Output Voltage

4.81

4.75

5.0 5.19

5.25

4.75

4.50

5.0 5.25

5.50

V
V 6V<V

IN

<26V, IO = 100mA Over Temp.

ALL VOLTAGE OPTIONS

Long Term Stability 20 20 mV/1000

Line Regulation

2.0

4.01030

4.0 30

mV

9V<V

IN

<16V

6V<V

IN

<26V

Load Regulation 14 50 14 50 mV 5mA<I

O

<100mA

Dropout Voltage

0.05

0.07

0.3

0.2

0.1

0.6

0.05

0.07

0.3

0.2

0.1

0.6

V
V
V

I

O

= 10mA

I

O

= 50mA

I

O

= 100mA

Quiescent Current

0.4151.0 0.4151.0 mAmAI

O

<10mA,6V<VIN<26V, -40oC<TJ<125oC

I

O

= 100mA, VIN = 14V, TJ = 25oC

Maximum Operational
Input Current

26 33 26 33 V

Maximum Line Transient 60 70 70 50 V R

L

= 500Ω, VO<5.5V, 100ms

Reverse Polarity Input
Voltage, DC

-15 -30 -15 30 V V

O

>-0.3V, RL = 500Ω

Reverse Polarity Input
Voltage, Transient

-50 -80 -50 -80 V 1% Duty Cycle, τ<100ms , R

L

= 500Ω

Output Noise Voltage 500 500 µVrms 10Hz-100kHz, C

OUT

= 100µF

Ripple Rejection 80 80 dB f

O

= 120Hz

CLM2931

CORPORATION

CALOGIC CORPORATION, 237 Whitn ey Place, Fremont, Cal ifornia 94539, Telephone: [phone], FAX: [phone]

ADJUSTABLE VERSI ON ONLY: V

IN

= 14V, VO = 3V, IO = 10mA, R1 = 27k, C2 = 100µF, TJ = 25

o

PARAMETER

CLM2931C

UNITS CONDITIONS

MIN TYP MAX

Output Voltage Range 3.0 24 V
Line Regulation 0.2 1.5 mV V

OUT

+ 0.6V<VIN<26V

Load Regulation 0.3 1.0 mV 5mA<I

O

<100mA

Output Impedance 40 mΩ/V 100mADC and 10mArms, 100Hz-10kHz

Quiescent Current

0.4
15

0.8

1.0

1.0

mA
mA
mA

I

O

= 10mA

I

O

= 100mA

During Shutdown R

L

= 500Ω
Output Noise Voltage 100 µVrms 10Hz-100kHz
Long T erm Stability 0.4 %/1000h
Ripple Rejection 0.02 %/V f

O

= 120Hz

Dropout Voltage

0.05

0.3

0.2

0.6

V
V

I

O

< 10mA

I

O

= 100mA
Maximum Operational Input Voltage 26 33 V
Maximum Line Transient 60 70 V I

O

= 10mA, Reference Voltage <1.5V
Reverse Polarity Input Voltage, DC -15 -30 V V

O

>-0.3V, RL = 500Ω

Reverse Polarity Input Voltage, Transient -50 -80 V 1% Duty Cycle, T<100ms, R

L

= 500Ω
On/Off Threshold Current 20 50 µA
Threshold Votage

On
Off 3.25

2.0

2.2

1.2 V V

O

= 3V

Note 1: See TYPICAL APPLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used.
Note 2: All limits are at 25

o

C or over the full ope rati ng temp era tu re jun cti on range of -40oC to +125oC.

Note 3: The maximum power dissipation is a function of maximum junction temperat ure , total thermal resistance, an d ambient temperatu re.
Note 4: Human body model, 100µF discharged through 1.5KΩ.

APPLICATION HINTS

The CLM2931 requires an output capacitor for d evice st ability .
The value required varies greatly depending upon the
application circuit and other factors. The high frequency
characteristics of electolytic capacitors depend greatly on the
type and also on the manufacturer. Sometimes only bench
testing is the only means to determine the proper capacitor
type and value. The high quality 100µF aluminum e lectrolyt ic
covers all general application circuits, this stability can be
obtained with a tantalum electrolytic value of 47µF.

Another critical point of electrolytic characteristics is its
performance over temperature. The CLM2931 is designed to
operate starting at -40

o

C which may not be true in the case of
electrolytic. Higher temperatures are generally no problem.
The electrolytic type in aluminum will freeze at around -30

o

C.
This could cause an oscillation at output of regulator. At a
lower temperature requirement by many applications the
capacitor should maintain its performance. So as a result, for an
application which regulator junction temperature does not exceed
25

o

C, the output capacitor can be reduced by the factor of two

over the value needed for the entire temperature range.

Other points with linear regulators is that the twitch higher
output current stability decreases. In most applications the
CLM2931 is operating at a few milliamps. In these
applications the output capacitance can be further reduced.
For example, when the regulator is runnin g at 10mA output
current the output capacitance value is half compared to the
same regulator that is running at 100mA.

With the CLM2931CT adjustable regulator, the m inimum value
of output capacitance is a function of the output voltage. The
value decreases with higher output voltages, since the
internal loop gain is reduc ed.

The worst case occurs at the lower temperature and
maximum operating currents, the entire circuit and the
electrolytic, should be cooled down to the minimum
temperature. The minimum of 0.6 volts required at the input
of regulator above the output to keep the power dissipation
and die heating to its minimum. After the value for the
capacitor has been determined for actual use, the value
should be doubled.

CALOGIC CORPORATION, 237 Whitn ey Place, Fremont, Cal ifornia 94539, Telephone: [phone], FAX: [phone]

CLM2931

CORPORATION

TYPICAL APPLICA TION S

CLM2931 FIXED OUTPUT

UNREGULATED

INPUT

V
REGULATED
OUTPUT

C1

0.1

GND

I

Q

+

C2

100

µ

F

OUT

CLM2931

1M-06

V

IN

V

CC

IN

OUT

ON/OFF

V

OUT

R1
20k

C2
100

µ

F

R2

ADJ

GND

ON

OFF

R3
51k

C1

0.1

µ

F

CLM2931

ADJUSTABLE

V = Reference Voltage x

OUT

R1 + R2

R1

1M-09

CLM2931 FIXED O UTPUT

CLM2931 ADJUSTABLE OUTPUT

SCHEMAT IC DIAGRAM

V

IN

Q1

V

OUT

R1

5V: 20k

ADJ:

∞

ADJUST

R2

5V: 100k

ADJ:

∞

GND

R6

6

Q2

Q10 Q3

R16
6k

R19
200

1
1

Q12

Q13

1

5

R7

30k

Z1
Z2
Z3

Z4

ON/OFF

R11
50k

R13
40k

D1

D15

140k

Q15

R8

3k

R14

184k

Z6

R16

14.7k

R12
140k

R10
30k

Q11

Q9

Q16

Q8

Q7

Q6

Q4

R5

2.1k

R4

3.6k

R3
32k

Q5

4x

1M-08

CALOGIC CORPORATION, 237 Whitn ey Place, Fremont, Cal ifornia 94539, Telephone: [phone], FAX: [phone]

CLM2931

CORPORATION

TYPICAL PERFORMANCE CHARACTERI STIC S

OUPUT IMPEDAN C E (

Ω

)

OUTPUT IMPEDANCE

1M-22

FREQUENCY (Hz)

10

0.01

1

0.1

1

10 100 1k 10k 100k 1M

IO= 10mA

LM2931 - 3.0

70
60
50
40
30
20
10

0

1M-23

OPERATION DURING

LOAD DUMP

OUTPUT

VOLTAGE (V)

TIME (ms)

C

O

= 100µF

INPUT

VOLTAGE (V)

6
4
2
0

-2

-100 0 100 200 300 400 500

R

L

= 500

Ω

τ

= 150ms

OUTPUT VOLTAGE (V)

REFERENCE VOLTAGE (V)

1.30

1.28

1.26

1.24

1.22

1.20

1.18

1.16

1.14

1.12

1.10

1M-24

REFERENCE VOLTAGE

0

LM2031C ADJUSTABLE

3 6 91215 182124

JUNCTION TEMPERATURE (˚C)

0.6

0.5

0.4

0.3

0.2

0.1

0

1M-25

DROPOUT VOLTAGE

INPUT-OUTPUT DIFFERENTIAL (V)

0 40 80 120

IO= 50mA

I

O

= 10mA

I

O

= 100mA

OUTPUT CURRENT (mA)

1M-26

DROPOUT VOLTAGE

INPUT-OUTPUT DIFFERENTIAL (V)

0 50

0.6

0.5

0.4

0.3

0.2

0.1

0

100

INPUT VOLTAGE (V)

OUTPUT VOLTAGE (V)

6.0

5.0

4.0

3.0

2.0

1.0

1M-27

LOW VOLTAGE BEHAVIOR

2.0 3.0 4.0 5.0 6.0

IO= 100mA

LM2931-5.0

CALOGIC CORPORATION, 237 Whitn ey Place, Fremont, Cal ifornia 94539, Telephone: [phone], FAX: [phone]

CLM2931

CORPORATION

TYPICAL PERFORMANCE CHARACTERI STICS ( cont inue d)

INPUT VOLTAGE (V)

600

500

400

300

200

100

0

1M-28

PEAK OUTPUT CURRENT

OUTPUT CURRENT (mA)

0102030

TJ= 25˚C

TJ= 85˚C

TJ= -40˚C

OUTPUT CURRENT (mA)

0

1M-29

QUIESCENT CURRENT

30

25

20

15

10

5

QUIESCENT CURRENT (mA)

030 6090

VIN= 14V

25

0

1M-30

QUIESCENT CURRENT

20

15

10

3

2

1

QUIESCENT CURRENT (mA)

-40

0 40 80 120

JUNCTION TEMPERATURE (˚C)

IO= 50mA

IO= 0mA

AMBIENT TEMPERATURE (˚C)

POWER DISSIPATION (W)

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1
0

1M-31

MAXIMUM POWER DISSIPATION

(SO-8)

02040608010 30 50 70 90

AMBIENT TEMPERATURE (˚C)

POWER DISSIPATION (W)

22
20
18
16
14
12
10

8
6
4
2
0

1M-32

MAXIMUM POWER DISSIPATION

(TO-220)

020 40608010 30 50 70 90 100

INFINITE HEATSINK

10˚C/W HEAT SINK

NO HEAT SINK

AMBIENT TEMPERATURE (˚C)

POWER DISSIPATION (W)

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1
0

1M-33

MAXIMUM POWER DISSIPATION

(TO-92)

02040608010 30 50 70 90

0.125" LEAD LENGTH
FROM PC BOARD

0.4" LEAD LENGTH

FROM PC BOARD