Calogic LLC CLM2951CS-5, CLM2951CS-3.3, CLM2951CS-3, CLM2951CP-5, CLM2951CP-3.3 Datasheet

150mA Low Dropout

Voltage Regulators

CLM2950 / CLM2951

FEATURES

••

5V, 3.3V, and 3.0V Vers io ns at 150mA Output

••

Ver y Low Q ui e s cent Current

••

Low Dropout Voltage

••

Extremely Tig h t Load and Line Regul ati on

••

Ver y Low Tempe ratur e Coef fi ci ent

••

Needs Only 1µF for Stabi lit y

••

Current and Thermal Limiting

••

Unregula ted DC Inp ut can W ith st and -20V R ev ers e
Battery an d +60V Posit i ve Transien ts

••

Similar Replace me nt for LP295 0/ LP295 1 Socke ts

CLM2951 Versions Only

••

Error Flag Warns of Output Dropout

••

Logic-Controlled Electronic Shutdown

••

Outpu t Progr am ma bl e from 1. 24 to 2 9V

APPLICATIONS

••

Battery Pow er ed Syst em s

••

Cordless Telephones

••

Radio Control Systems

••

Portable / Palm T op / Noteboo k Comput ers

••

Portable Consumer Equipment

••

Portable I nst ru me nt atio n

••

Avionics

••

Automot i ve El ect r oni cs

••

SMPS Post-Regula tor

••

V ol tage Ref er en c e

PRODUCT DESCRIPTION

Calogic’s CLM2950 and CLM2951 are low power voltage
regulators. These devices are an excellent choice for use in
battery-powered applications such as cordless telephones,
radio contr ol systems, and portable computers. The CLM2950
and CLM2951 features very low quiescent current and very
low dropout voltage (Typ. 50mV at light load and 380mV at
100mA). This includes a tight initial tolerance of 0.5% typ.,
extremely good load and line regulation of 0.05% typ. and
very low output temperature coefficient, making the
CLM2950/CLM2951 useful as a low-power voltage reference.
Other key additional features of this device includes higher
output current (150mA), pos itive tr ansien t prote ction up to 6 0V
(Load dump), and the ability to su rvive an unregulated input
voltage transie nt of -20V be low gro und ( rever se batte ry ).

The error flag output feature is used as power-on reset for
warning of a low output voltage, due to falling voltage input of
batteries. Another feature is the logic-compatible shutdown
input which enables the regulator to be switched on and off.
The CLM2950 is offered in a 3-pin TO-92 package compatible
with other 5 volt regulators. The CLM2951 is also available in
8-pin plastic and SO-8.

The regulator output voltage may be pin-strapped for a 5V,

3.3V and 3.0 volts or programmed from 1.24 volt to 29 volts
with an external pair of resistors.

ORDERING INFORMATION
P ART PACKAGE TEMPERATURE RANG E

CLM2950ACN-X TO-92 (3-Pin) IND.
CLM2950CN-X TO-92 (3-Pin) IND.
CLM2951ACP-X Plastic DIP (8-Pin) IND.
CLM2951CP-X Plastic DIP (8-Pin) IND.
CLM2951ACS-X Plastic SOIC (8-Pin) IND.
CLM2951CS-X Plastic SOIC (8-Pin) IND.

X = 3.0V, 3.3V or 5.0V

CORPORATION

PIN CONNECTIONS

1D-47

123

1. OUTPUT

2. GROUND

3. INPUT

TO-92

BOTTOM VIEW

GROUND

1
2
3

8
7
6

4 5 ERROR

CLM2951

1D-46

8-PIN SURFACE MOUNT

5V OR 3.3V TAP

FEEDBACK

INPUT

SHUTDOWN

SENSE

OUTPUT

TOP VIEW

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 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 Ra nge

CLM2951 . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150

o

C
CLM2950AC/CLM2950C

CLM2951AC/CLM 29 51C. . . . . . . . . . . . . . . . -40 to +125

o

C

Input Supply Vo ltag e . . . . . . . . . . . . . . . . . . . . . . . -20 to +60 V

Feedback Input Voltage. . . . . . . . . . . . . . . . . . . . -1.5 to +30V

Shutdown Input Voltage. . . . . . . . . . . . . . . . . . . . -0.3 to +30V

Error Comparator Output. . . . . . . . . . . . . . . . . . . -0.3 to +30V

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

CLM2950 / CLM2951

CORPORATION

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

ELECTRICAL CHARACTERISTICS: V

S

= 15V, TA = 25oC, unless otherwise specified .

PARAMETER

CLM2951

CLM2950AC
CLM2951AC

CLM2950C
CLM2951C

UNITS

CONDITIONS

(Note 2)

MIN TYP MAX MIN TYP MAX MIN TYP MAX

3V VERSIONS

Output Voltage

2.985

2.964

3.0 3.015

3.036

2.985

2.970

2.964

3.0

3.0

3.0

3.015

3.030

3.036

2.970

2.955

2.940

3.0

3.0

3.0

3.030

3.045

3.060

V
V
V

T

J

= 25oC

-25

o

C ≤ TJ ≤ 85oC

Full Operating Temperature

Output Voltage 2.955 3.0 3.045 2.958 3.0 3.042 2.928 3.0 3.072 V 100µA ≤ I

L

≤ 150mA,TJ ≤T

JMAX

3.3V VERSIONS

Output Voltage

3.284

3.260

3.3 3.317

3.340

3.284

3.267

3.260

3.3

3.3

3.3

3.317

3.333

3.340

3.267

3.251

3.234

3.3

3.3

3.3

3.333

3.350

3.366

V
V
V

T

J

= 25oC

-25

o

C ≤ TJ ≤ 85oC

Full Operating Temperature

Output Voltage 3.251 3.3 3.350 3.254 3.3 3.346 3.221 3.3 3.379 V 100µA ≤ I

L

≤ 150mA, TJ ≤T

JMAX

5V VERSIONS

Output Voltage

4.975

4.94

5.0 5.025

5.06

4.975

4.95

4.94

5.0

5.0

5.0

5.025

5.050

5.06

4.95

4.925

4.90

5.0

5.0

5.0

5.05

5.075

5.10

V
V
V

T

J

= 25oC

-25

o

C ≤ TJ ≤ 85oC

Full Operating Temperature

Output Voltage 4.925 5.0 5.075 4.93 5.0 5.07 4.88 5.0 5.12 V 100µA ≤ I

L

≤ 150mA, TJ ≤ T

JMAX

ALL VOLTAGE OPTIONS

Output Voltage
T emperature Coefficient

20 120 20 50 ppm/

o

C (Note 1)

Line Regulation (Note 3) 0.03 0.1 0.03 0.1 0.04 0.2 % 6V ≤ V

IN

≤ 30V (Note 4)

Load Regulation (Note 3) 0.04 0.1 0.04 0.1 0.1 0.2 % 100µA ≤ IL ≤ 150mA
Dropout Voltage

(Note 5)

50
380
450

80
450
500

50
380
450

80
450
500

50
380
450

80
450
500

mV
mV
mV

I

L

= 100µA

I

L

= 100m A

I

L

= 150m A

Ground Current

150

3
5

170

6
8

150

3
5

170

6
8

150

3
5

170

6
8

µA
mA
mA

I

L

= 100µA

I

L

= 100m A

I

L

= 150m A

Current Limit 130 200 130 200 130 200 mA V

OUT

= 0

Thermal Regulation 0.05 0.2 0.05 0.2 0.05 0.2 %/W

Output Noise,
10Hz to 100KHz

430
160
100

430
160
100

0430

160
100

µVrms
µVrms
µVrms

C

L

= 1µF

C

L

= 200µF

C

L

= 13.3µF

(Bypass = 0.01µF pins 7 to 1 (CLM2951))

8-PIN VERSIONS ONLY CLM2951 CLM2951AC CLM2951C

Reference Voltage 1.22 1.235 1.25 1.22 1.235 1.25 1.21 1.23 1.26 V
Reference Voltage 1.19 1.27 1.19 1.27 1.18 1.28 V Over Temperature (Note 6)
Feedback Pin Bias Current 40 60 40 60 40 60 nA
Reference Voltage

T emperature Coefficient

20 20 50 ppm/

o

C (Note 7)

Feedback Pin Bias Current
T emperature Coefficient

0.1 0.1 0.1 nA/

o

C

CLM2950 / CLM2951

CORPORATION

BLOCK DIAGRAM

ERROR DETECTION
COMPARATOR

1D-48

1µF

REFERENCE

1.23V

UNREGULATED DC

ERROR
AMPLIFIER

60mV

+

+

TO CMOS OR
TTL

330kΩ

FROM
CMOS

OR TTL

+

+

5V @ 150mA
MAX

60kΩ

CLM2950 AND CLM2951 BLOCK DIAGRAM

180kΩ

817

SENSE

6

2

4

5

5V TAP

ERROR

GROUND

INPUT OUTPUTFEEDBACK

SHUTDOWN

3

–

+
–

+

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: [phone], FAX: [phone]

ELECTRICAL CHARACTERISTIC S (continued)

PARAMETER

CLM2951

CLM2950AC
CLM2951AC

CLM2950C
CLM2951C

UNITS

CONDITIONS

(Note 2)

MIN TYP MAX MIN TYP MAX MIN TYP MAX

ERROR COMPARATOR

Output Leakage Current 0.01 1 0.01 1 0.01 1 µAV

oh

= 30V

Output Low Voltage 150 250 150 250 150 250 mV V

IN

= 4.5V, IOL = 400µA
Upper Threshold Voltage 40 60 40 60 40 60 mV (Note 8)
Lower Threshold Voltage 75 95 75 95 75 95 mV (Note 8)
Hysteresis 15 15 15 mV (Note 8)

SHUTDOWN INPUT

Inp ut Logic Voltage

2

1.3 0.6
2

1.3 0.7
2

1.3 0.7 V
V

Low (Regulato r ON)
High (Regulator OFF)

Shutdown Pin
Input Current

30

67550800

30

67550800

30

67550800

µAµAV

S

= 2.4V

V

S

= 30V

Regulator Output Current
In Shutdown

310 310 310µA (Note 9)

Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range.
Note 2: Unless otherwise specified all limits guaranteed for T

J

= 25oC, VIN = 6V, IL = 100µA and CL = 1µF. Additional conditions for the 8-pin

versions are feedback tied to 5V tap and output tied to output Sense (V

OUT

= 5V) and V

SHUTDOWN

≤ 0.8V.

Note 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to
heating effects are covered under the specification for thermal regulation.

Note 4: Line regulation for the CLM2951 is tested at 150

o

C for IL = 1mA. For IL = 100µA and TJ = 125oC, line regulation is guaranteed by design

to 0.2%. See typical performance characteristics for line regulation versus temperature and load current.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured

at 1V differential at very low values of programmed output voltage, the minimum input supply voltage of 2V (2.3V over temperature) must be
taken input account.

Note 6: V

REF

≤ V

OUT

≤ (VIN - 1V), 2.3 ≤ VIN ≤ 30V, 100µA ≤ IL ≤ 150mA, TJ ≤ T

JMAX

.

Note 7: Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temprtature range.
Note 8: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage

measured at 6V input. To express these thre sh old s in term s of outp ut vo lta ge chan ge , mu ltip l y by the erro r amp lifier gain = V

OUT/VREF

=
(R1+R2)/R2. For example, at a programmed output voltage of 5V, the error output is guaranteed to go low when the output drops by 95mV x
5V/1.235 = 384mV. Thresho lds remain constant as a percent of V

OUT

as V

OUT

is varied, with the dropout warning occurring at typically 5% below

nominal, 7.5% guaranteed.
Note 9: V

SHUTDOWN

≥ 2V, VIN ≤ 30V, V

OUT

= 0, Feedback pin tied to 5V Tap.

Note 10: All typical values are not guaranteed.