MAX5069 datasheet(7/19 Pages) MAXIM

Part #	MAX5069

Description	High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers

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Manufacturer	MAXIM [Maxim Integrated Products]

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High-Frequency, Current-Mode PWM Controller

with Accurate Oscillator and Dual FET Drivers

_______________________________________________________________________________________

7

62.0

62.9

62.8

62.7

62.6

62.5

62.4

62.3

62.2

62.1

63.0

-40

35

60

-15

10

85

110

FLTINT CURRENT vs. TEMPERATURE

TEMPERATURE (°C)

8.0

12.5

12.0

11.5

11.0

10.5

10.0

9.5

9.0

8.5

13.0

-40

35

60

-15

10

85

110

HYST RON vs. TEMPERATURE

TEMPERATURE (°C)

VIN = 24V

SINKING 50mA

0.01

0.1

1

2

0.03

0.1

1

2

NDRVA SWITCHING FREQUENCY (fSW)

vs. RRT

RRT (M

Ω)

NDRV SWITCHING FREQUENCY

vs. TEMPERATURE

TEMPERATURE (

°C)

110

85

35

60

10

-15

48.4

48.8

49.2

49.6

50.0

50.4

50.8

51.2

51.6

52.0

48.0

-40

fSW = 50kHz

NDRV SWITCHING FREQUENCY

vs. TEMPERATURE

TEMPERATURE (

°C)

100

125

75

50

25

0

-25

497

496

498

500

499

502

501

504

503

505

495

-50

fSW = 500kHz

DEAD TIME vs. TEMPERATURE

TEMPERATURE (

°C)

110

85

60

35

10

-15

45

50

55

60

65

70

40

-40

VIN = 24V

RDT = 24.9k

Ω

RRT = 100k

Ω

NDRV SWITCHING FREQUENCY

vs. TEMPERATURE

TEMPERATURE (

°C)

110

85

60

35

10

-15

1.15

1.20

1.25

1.30

1.35

1.40

1.10

-40

fSW = 1.25MHz

DEAD TIME vs. RDT

RDT (k

Ω)

10

20

40

60

80

100

120

140

160

180

200

0

1

100

Typical Operating Characteristics (continued)

(VIN = +23.6V for MAX5069A/B at startup, then reduces to +12V, VIN = +12V for the MAX5069C/D, CIN = CREG5 = 0.1µF, CVCC = 1µF,

RRT = 100k

Ω, NDRV_ = floating, VFB = 0V, VCOMP = floating, VCS = 0V, TA = +25°C, unless otherwise noted.)

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