OMNIREL OM7620ST Datasheet

1.5 AMP HIGH VOLTAGE POSITIVE
ADJUSTABLE REGULATOR

Three T erminal, High V oltage, Precision
Adjustable Positive Voltage Regulator In
Hermetic JEDEC TO-257AA

FEATURES

• Similar To Industry Standard LT117AHV

• Adjustable Output Voltage

• Built In Thermal Overload Protection

• Short Circuit Current Limiting

• Available In Isolated and Non-Isolated Package

• Maximum Output Voltage Tolerance Is Guaranteed To ±1%

• Available Hi-Rel Screened

OM7620ST

DESCRIPTION

This three terminal positive regulator is supplied in a hermetically sealed metal
package whose outline is similar to the industry standard TO-220 plastic package. All
protective features are designed into the circuit, including thermal shutdown, current
limiting, and safe-area control. With heat sinking, these devices can deliver up to 1.5
amps of output current. The unit also features output voltages that can be fixed from

1.2 volts to 57 volts using external resistors.

ABSOLUTE MAXIMUM RATINGS @ 25°C

Power Dissipation (Pd) (Internally Limited) .................................20 W

Input - Output Voltage Differential.........................................60 V

Operating Junction Temperature Range........................- 55°C to + 150°C

Storage Temperature Range .................................- 65°C to + 150°C

Lead Temperature (Soldering 10 seconds)................................300°C

Thermal Resistance:

qJC(Isolated) .....................................................4.2°C/W

qJC(Non-Isolated).................................................3.5°C/W

qJA...............................................................42°C/W

Maximum Output Current................................................1.5 A

3.3

4 11 R0

3.3 - 169

OM7620ST

3.3

ELECTRICAL CHARACTERISTICS

-55°C TA 125°C, IL= 8mA (unless otherwise specified)

Parameter Symbol Test Conditions Min. Max. Unit

Reference Voltage V

Line Regulation R

REF

LINE

(Note 1) 3.3V V

Load Regulation R

LOAD

(Note 1) V

Thermal Regulation V

Ripple Rejection R

RTH

N

(Note 2) C

Adjustment Pin Current I

Adjustment Pin ³I

Adj

Adj

Current Change V

Miminum Load Current I

Current Limit I

Lmin

CL

(Note 2) V

V

= 3.0V, TA= 25°C 1.238 1.262

DIFF

V

= 3.3V • 1.225 1.270 V

DIFF

V

= 40V • 1.225 1.270

DIFF

V

= 60V • 1.225 1.270

DIFF

3.0V V

40V V

V

DIFF

V

DIFF

DIFF

DIFF

40V V

40V, V

DIFF

60V, V

DIFF

OUT

40V, V

OUT

60V, V

= V

, TA= 25°C -4.5 4.5

ref

= V

OUT

ref

= V

, TA= 25°C -5 5

ref

= V

OUT

ref

• -9 9 mV

• -10 10

= 3.0V, 10mA IL 1.5A, TA= 25°C -15 15

= 3.3V, 10mA IL 1.5A • -15 15 mV

DIFF

= 40V, 10mA IL 300mA, TA= 25°C -15 15
V

= 40V, 10mA IL 195mA • -15 15

DIFF

V

= 60V, 10mA IL 30mA • -15 15

DIFF

VIN= 14.6V, IL= 1.5A -5 5 mV

P

= 20 Watts, t = 20 ms, TA= 25°C

d

f = 120 Hz, V

= 10 µF, I

Adj

V

= 3.0V, TA= 25°C 100

DIFF

V

DIFF

V
V

V

= 3.0V, 10mA IL 1.5A, TA= 25°C -5 5

DIFF

= 3.3V, 10mA IL 1.5A • -5 5

DIFF

V

= 40V, 10mA IL 300mA, TA= 25°C -5 5

DIFF

V

= 40V, 10mA IL 195mA • -5 5 µA

DIFF

3.0V V

DIFF

3.3V V

3.3V V

V

= 3.0V, V

DIFF

OUT

V

= 3.3V, V

DIFF

V

= 40V, V

DIFF

V

= 60V, V

DIFF

V

= 40V, TA= 25°C 0.3 1.5 A

DIFF

V

= 60V, TA= 25°C 0.05 0.50

DIFF

OUT

OUT

= V

ref

= 100 mA

• 66 dB

= 3.3V • 100 µA

= 40V • 100

DIFF

= 60V • 100

DIFF

40V, TA= 25°C -5 5

40V • -5 5

DIFF

60V • -5 5

DIFF

= 1.4V (forced), TA= 25°C 5

= 1.4V (forced) • 5mA

OUT

= 1.4V (forced) • 5

OUT

= 1.4V (forced) • 7

OUT

= 5V • 1.5 3.5

DIFF

Notes:

1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
Changes in output voltage due to heating effects must be taken into account separately.

2. If not tested, shall be guaranteed to the specified limits.

3. The • denotes the specifications which apply over the full operating temperature range.

3.3 - 170

0.2
0

-0.2

-0.4

-0.6

-0.8

-1.0

-75 -50

-25

0255075

100

125

150

0.4

-75 -50

-25

0255075

100

125

150

65
60

55
50

45

40

35

70

1.260

1.250

1.240

1.230

1.220

-75

-50 -25 0 25 50

75

100

125 150

3.0

2.5

2.0

1.5

1.0

-75 -50 -25 0

25 50 75

100

125

150

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5
0

0

10

20 30

40

TYPICAL APPLICATIONS

OM7620ST

LOAD REGULATION

0.4

0.2
0

-0.2

-0.4

-0.6

VI= 15V

VO= 10V

-0.8

, Output Voltage Change (%)

O

-1.0

³V

-75 -50 -25 0 25 50 75 100 125 150

TJ, Junction Temperature (C°)

ADJUSTMENT PIN CURRENT

70
65
60
55
50
45
40

, Adjustment Pin Current (µA)

35

Adj

I

-75 -50 -25 0 25 50 75 100 125 150

TJ, Junction Temperature (C°)

TEMPERATURE STABILITY

1.260

1.250

1.240

1.230

, Reference Voltage (V)

ref

V

1.220

-75 -50 -25 0 25 50 75 100 125 150

T

, Junction Temperature (C°)

J

IL= 1.5A

IL= 0.5A

CURRENT LIMIT

4

3

TJ= 25°C

2

TJ= 55°C

TJ= 150°C

1

, Output Current (A)

O

I

0

010203040

V

- VO, Input - Output Voltage Differential (Vdc)

I

)

dc

DROPOUT VOLTAGE

3.0

³VO= 100mV

2.5

IL= 1.5A

2.0

1.5

1.0

IL= 20mA

, Input - Output Voltage Differential (V

O

-75 -50 -25 0 25 50 75 100 125 150

- V

I

V

TJ, Junction Temperature (C°)

IL= 200mA

MINIMUM OPERATING CURRENT

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

, Quiescent Current (mA)

B

I

TJ= 25°C

TJ= 150°C

0

010203040

- VO, Input - Output Voltage Differential (Vdc)

V

I

IL= 1.0A

IL= 500mA

TJ= 55°C

3.3

*CINis required if regulator is located an

appreciable distance from power supply filter.

** C

is not needed for stability, however it does

o

improve transient response.

V

= 1.25 V (1 + )+ I

OUT

Since I

is controlled to less than 100 µA,

Adj

the error associated with this term is negligible
in most applications.

STANDARD APPLICATION

V

IN

CIN*

R2
R1

Adj

R2

3.3 - 171

0.1 µF

OM7620ST

I

Adj

Adjust

R2

V

OUT

R1
240

Co**

1.0 µF

205 Crawford Street, Leominster, MA 01453 USA [phone] FAX [phone]

OM7620ST

.430
.410

.200
.190

.038 MAX.

.005

.120 TYP.

.537
.527

.665
.645

.420
.410

.150
.140

.750
.500

.100 TYP.

.035
.025

.045
.035

TYPICAL APPLICATIONS

ADJUSTABLE CURRENT LIMITER

+25V

OM7620ST

V

IN

Adjust

* To provide current limiting of IOto the

system ground, the source of the FET
must be tied to a negative voltage
below -1.25 V.

V

REF

R2 R1

I

DSS

VO < BV
I

As shown 0< IO< 1 A

Lmin

– I

DSS

< IO< 1.5 A

DSS

+ 1.25 V + V

=

V

V

REF

I

Omax + IDSS

SS

OUT

R1 V

1.25

R2

100

SLOW TURN-ON CURRENT CURRENT REGULATOR

V

IN

OM7620ST

Adjust

R2

MPS2907

V

OUT

240

50 K

5 V ELECTRONIC SHUT DOWN REGULATOR

D

I

O

O

V

V

IN

1N4002

IN

OM7620ST

Adjust

720

2N5640

V

ss*

IN4001

D

protects the device during an input short circuit.

1

V

IN

OM7620ST

Adjust

I

+

10 µF

OUT

1

120

Minimum V

V

OUT

I

Adj

(V

) + I

REF

Adj

= @

R1 R1

10mA I

OUT

V

OUT

1.5 A

R1 I

1.0µF

MPS2222

1 K

OUT

1.25 V

= 1.25 V

OUT

TTL
Control

3.3

MECHANICAL OUTLINE

NOTES

• Case is metal/hermetically sealed

• Isolated Tab

CONNECTION DIAGRAM

Tab

123

Isolated Non-Isolated

Front View Front View
Pin 1 - Adjust Pin 1 - Adjust
Pin 2 - Output Pin 2 - Output
Pin 3 - Input Pin 3 - Input
Tab - Isolated Tab - Output