6

GM7130HV

3A STEP DOWN VOLTAGE SWITCHING

REGULATORS

Preliminary

Information

Electrical Characteristics: All Output Voltage Versions

Parameter

Condition

Symbol

Min

Typ

Max

Unit

100

Feedback Bias

Current

-

50

500

nA

47

58

Oscillator

Frequency

(Note 8)

42

52

63

kHz

1.8

Saturation

Voltage

-

1.4

2.0

V

Max Duty Cycle

(ON)

(Note 5)

DC

93

98

-

%

4.2

6.9

Current Limit

Peak Current (Notes 4, 8)

3.5

5.8

7.5

A

Output =0V (Notes 6, 7)

2

Output Leakage

Current

Output = -1V (Notes 6, 7)

-

7.5

30

mA

Quiescent

Current

(Note 6)

-

5

10

mA

Standby

Quiescent

Current

= 5V (OFF)

-

50

200

µA

1.0

Low (ON)

-

1.2

0.8

2.2

High (OFF)

2.4

1.4

-

V

12

30

µA

0

10

Note 1:

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.

Operating Ratings indicate conditions for which the device is intended to be functional but do not

guarantee specific performance limits. For guaranteed specifications and test conditions, see the

Electrical Characteristics.

Note 2:

All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold

type face).

Note 3:

External components such as the catch diode, inductor, input and output capacitors can affect

switching regulator system performance. When the GM7130HV is used as shown in the Figure 2 test

circuit, system performance will be as shown in system parameters section of Electrical characteristics.

Note 4:

Output pin sourcing current. No diode, inductor or capacitor connected to output.

Note 5:

Feedback pin removed from output and connected to 0V.

Note 6:

Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V,

versions, and +25V for the 12V and 15V versions, to force the output transistor OFF.

Note 7:

VIN =40V (60V for high voltage version).

Note 8:

The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an

overload which causes the regulated output voltage to drop approximately 40% from the nominal output

voltage. This self protections feature lowers the average power dissipation of the IC by lowering the

minimum duty cycle from 5% down to approximately

ON/OFF

Logic lnput Level

ON/OFF Pin

Input Current