5

GM2574

1.5A STEP DOWN VOLTAGE SWITCHING

REGULATORS

Electrical Characteristics: All Output Voltage Versions

(Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature

rage)

Parameter

Condition

Symbol

Min

Typ

Max

Unit

100

Feedback Bias

Current

-

50

500

nA

Oscillator

Frequency

(Note 3)

42

52

58

kHz

1.8

Saturation

Voltage

-

1.4

2.0

V

Max Duty Cycle

(ON)

(Note 5)

DC

93

98

-

%

3.6

6.9

Current Limit

Peak Current (Notes 4, 5)

3.4

4.5

7.5

A

Output =0V (Notes 4, 6)

2

Output Leakage

Current

Output = -1V (Notes 4, 6)

-

7.5

30

mA

Quiescent

Current

(Note 6)

-

5

10

mA

Standby

Quiescent

Current

SD Pin = 5V (OFF)

-

50

200

µA

1.0

Low (ON)

-

1.2

0.8

2.2

lnput Level

High (OFF)

2.4

1.4

-

V

12

30

µA

SD Pin lnput

Current

0

10

Note 1: Stresses greater than those listed under Maximum Ratings may cause permanent damage to

the device. This is a stress rating only and functional operation of the device at these or any

other conditions above those indicated in the operation is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect reliability.

Note 2: The human body model is a 100pF capacitor discharge through a 1.5KΩ resistor into each pin.

Note 3: External components such as the catch diode, inductor, input and output capacitors, and voltage

programming resistors can affect switching regulator system performance. Where the GM2574

is used as shown in Figure 1&2 test circuits.

Note 4: No diode, inductor or capacitor connected to output pin.

Note 5: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.

Note 6: Feedback pin removed from output and connected to 12V for the 3.V, 5V and Adj version, to

force the output transistor switch OFF.