OM1327NTM datasheet(3/4 Pages) ETC

Part #	OM1327NTM

Description	1.5 AMP NEGATIVE ADJUSTABLE VOLTAGE REGULATOR APPROVED TO DESC DRAWING 7703408

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3.5

OM1327NTM, OM1327STM, OM1327NKM, OM1327SMM, OM1327NMM, OM1327N2M

Parameter

Symbol

Test Conditions

Min.

Max.

Unit

Reference Voltage

VREF

V

DIFF  = 3.0V, TA = 25°C

-1.262

-1.235

V

DIFF  = 3.0V

•

-1.28

-1.22

V

V

DIFF  = 40V, TA = 25°C

-1.28

-1.22

V

DIFF  = 40V

•

-1.28

-1.22

V

DIFF  = 50V, TA = 25°C

-1.28

-1.22

V

DIFF  = 50V

•

-1.28

-1.22

Line Regulation

RLINE

3.0 V ≤

V

DIFF  ≤ 50V, TA = 25°C

-10

10

(Note 1)

•

-25

25

mV

Load Regulation

RLOAD

V

DIFF  50V, 8mA ≤ IL ≤ 100 mA, TA = 25°C

-25

25

(Note 1)

V

DIFF  = 5V, 8mA ≤ IL ≤ 500 mA, TA = 25°C

-31

31

mV

•

-50

50

Thermal Regulation

VRTH

Vin = -16.25V, IL = 330 mA

-2

2

mV

Pd = 5 Watts, t = 10 ms, TA = 25°C

Ripple Rejection

RN

f = 120 Hz, Vout = Vref

•

66

dB

(Note 2)

CAdj = 10 µF

Adjustment Pin Current

IAdj

V

DIFF  = 3.0V

•

100

V

DIFF  = 40V

•

100

µA

V

DIFF  = 50V

•

100

Adjustment Pin

∆IAdj

V

DIFF  = 5V, 8mA ≤ Iout ≤ 200 mA

•

-5

5

µA

Current Change

3V ≤

V

DIFF  ≤ 50V, IL ≤8mA

•

-6

6

Miminum Load Current

ILmin

V

DIFF  = 3.0V, Vout = -1.4V (forced)

•

3.0

V

DIFF  = 10V, Vout = -1.4V (forced)

•

3.0

mA

V

DIFF  = 40V, Vout = -1.4V (forced)

•

5.0

V

DIFF  = 50V, Vout = -1.4V (forced)

•

5.0

Current Limit

ICL

V

DIFF  = 5V

•

0.5

1.8

(Note 2)

V

DIFF  = 50V, TA = 25°C

0.1

0.65

A

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.

*Cin is required if regulator is located more

than 4 inches from power supply filter. A 1 µF

solid tantalum or 10 µF aluminum electrolytic is

recommended.

** Co is necessary for stability. A 1 µF solid

tantalum or 10 µF aluminum electrolytic is

recommended.

Vout = -1.25 V (1 +R2)

R1

OM1327STM

1.0µF

-VIN

-VOUT

VOUT

VIN

IAdj

IPROG

CIN*CO**

R2

R1

120Ω

+

TYPICAL APPLICATION

ELECTRICAL CHARACTERISTICS -55°C ≤ T

A ≤ 125°C, IL = 8mA (unless otherwise specified)

OM1327N2M

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