ZL1505ALNFT1 datasheet(7/13 Pages) INTERSIL

Part #	ZL1505ALNFT1

Description	Synchronous Step-Down MOSFET Drivers

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Manufacturer	INTERSIL [Intersil Corporation]

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ZL1505

7

FN6845.3

February 25, 2011

Typical Performance Curves Performance curves with temperature are measured at ambient temperatures (T

A) of

+85°C, +25°C, and -25°C.

FIGURE 4. IVDD vs VDD WITH TEMPERATURE (NO SWITCHING)

FIGURE 5. THERMAL PROTECTION THRESHOLDS

FIGURE 6. MINIMUM GH ON-TIME, tGH,ON (TA = +25°C)

FIGURE 7. tGH,ON WITH TEMPERATURE (CGH = 0) (see Figure 3

for tGH,ON timing)

FIGURE 8. MINIMUM PWMH ON-TIME, tPWMH,ON (CGH = 0)

FIGURE 9. MINIMUM PWMH OFF-TIME, tPWMH,OFF (CGH = 0)

130

100

110

120

80

90

70

4.5

5.5

6.5

7.5

VDD (V)

5.0

6.0

7.0

+25

°C

+85

°C

-25

°C

155

140

145

150

125

135

120

4.5

7.5

VDD (V)

130

7.0

6.5

6.0

5.5

5.0

TRISING

TFALLING

22

16

18

20

10

14

8

4.5

7.5

VDD (V)

12

7.0

6.5

6.0

5.5

5.0

CGH = 3nF, HSEL = SW

CGH = 3nF, HSEL = BST

CGH = 0

VDD (V)

4.5

7.5

7.0

6.5

6.0

5.5

5.0

16

13

14

15

10

12

8

11

9

+25

°C

+85

°C

-25

°C

16

10

12

14

4

8

2

6

VDD (V)

4.5

7.5

7.0

6.5

6.0

5.5

5.0

+25

°C

-25

°C

VDD (V)

16

10

12

14

4

8

2

6

+85

°C

4.5

7.5

7.0

6.5

6.0

5.5

5.0

VDD (V)

30

22

26

14

18

10

-25

°C

+25

°C

+85

°C

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