LX1664ACD datasheet(5/17 Pages) MICROSEMI

Part #	LX1664ACD

Description	DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC

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Manufacturer	MICROSEMI [Microsemi Corporation]

Direct Link	http://www.microsemi.com

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DUAL OUTPUT PWM CONTROLLERS WITH 5-BIT DAC

LX1664/1664A, LX1665/65A

PRODUCT DA T ABOOK 1996/1997

5

Rev. 1.2 11/99

P RODUCTION D ATA S HEET

CHARACTERISTICS CUR VES

70

75

80

85

90

95

12

34

56

7

8

9

10

11

12

13

14

IOUT (A)

EFFICIENCY AT 3.1V

EFFICIENCY AT 2.8V

EFFICIENCY AT 1.8V

Output Set Point

70

75

80

85

90

95

100

1234

567

89

10

11

12

13

14

IOUT (A)

EFFICIENCY AT 3.1V

EFFICIENCY AT 2.8V

EFFICIENCY AT 1.8V

Output Set Point

FIGURE 2 — Efficiency Test Results:

Non-Synchronous Operation, V

IN = 5V

FIGURE 3 — Efficiency Test Results:

Synchronous Operation, V

IN = 5V

FIGURE 4 — Efficiency Test Results: Synchronous Operation, V

IN = 12V.

Note: Non-synchronous operation not recommended for 12V operation, due to power loss in Schottky diode.

60

65

70

75

80

85

90

12

34

56

78

9

10

11

12

13

14

IOUT (A)

1.8V EFFICIENCY

2.8V EFFICIENCY

3.3V EFFICIENCY

Output Set Point

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LX1664ACD Datasheet(PDF) 5 Page - Microsemi Corporation

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