LM1501A datasheet(3/4 Pages) HTC

3 / 4 page

5.0A, 150kHz, Step-down Switching Regulator

LM1501A

Mar. 2011 – Ver. 1.3

HTC

Electrical Characteristics

Unless otherwise specified, TJ=25℃ VIN= 12V for the 3.3V, 5V, and Adjustable version and VIN = 24V for the 12V

version. ILOAD = 500mA.

Characteristic

Symbol

Test Condition

Min

Typ

Max

Unit

LM1501A -ADJ

VoUT = 3V, ILOAD = 5A

LM1501A-3.3

VIN = 12V, ILOAD = 5A

LM1501A-5

VIN = 12V, ILOAD = 5A

Efficiency

LM1501A-12

VIN = 25V, ILOAD = 5A

LM1501A-3.3

4.75V ≤ VIN ≤ 40V

0.2A ≤ ILOAD ≤ 5A

3.20

3.3

3.40

LM1501A-5

7V ≤ VIN ≤ 40V

0.2A ≤ ILOAD ≤ 5A

4.85

5.0

5.15

Output Voltage

VOUT

LM1501A-12

15V ≤ VIN ≤ 40V

0.2A ≤ ILOAD ≤ 5A

11.64

12.0

12.36

Feedback Voltage

VFB

LM1501A-ADJ

4.5V ≤ VIN ≤ 40V

0.2A ≤ ILOAD ≤ 5A

VOUT programmed for 3V

1.180

1.215

1.250

Oscillator Frequency

127

150

173

kHz

Feedback

Bias

Current

LM1501A-ADJ; VFB=1.215V

Saturation Voltage

VSAT

IOUT = 5A (Note 2,3)

1.4

(Note 3)

100

Max Duty Cycle (ON)

Max Duty Cycle (OFF)

(Note 4)

Current Limit

ICL

Peak Current (Note 2,3)

6.5

Output = 0V

μA

Output

Leakage Current

Output = -1V, VIN=40V

Quiescent Current

(Note 4)

4.5

Standby

Quiescent Current

ISTBY

ON/OFF pin = 5V(OFF), VIN = 40V

200

μA

1.3

VIH

Low(Regulator ON)

0.6

ON/OFF Pin

Logic Input

Threshold voltage

VIL

High (Regulator OFF)

2.0

VLOGIC = 2.5V (regulator OFF)

ON/OFF Pin

Logic Input current

VLOGIC = 0.5V (regulator ON)

Note 2. No elements connected to output pin

Note 3. Feedback pin removed from output and connected to 0V to force the output transistor switch ON.

Note 4. Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the A version, and 15V for the 12V version. To force the

output transistor switch OFF

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