NCP1411D datasheet(5/14 Pages) ONSEMI

Part #	NCP1411D

Description	Sync-Rect PFM Step-Up DC-DC Converter with Low-Battery Detector and Ring-Killer

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NCP1411

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5

TYPICAL OPERATING CHARACTERISTICS

Figure 3. Reference Voltage versus Output

Current

1

10

1000

100

1.220

1.190

1.200

ILOAD, OUTPUT CURRENT (mA)

1.195

1.205

1.210

1.215

Figure 4. Reference Voltage versus Input

Voltage at OUT Pin

12

6

4

1.195

1.180

1.186

VOUT, INPUT VOLTAGE AT OUT PIN (V)

1.183

1.189

1.192

Figure 5. Reference Voltage versus

Temperature

−40

0

100

20

1.194

1.184

TA, AMBIENT TEMPERATURE (°C)

1.186

1.188

1.190

1.192

Figure 6. Switch ON Resistance versus

Temperature

−40

0

100

20

1.5

0

0.6

TA, AMBIENT TEMPERATURE (°C)

0.3

0.9

1.2

Figure 7. LX Switch Max. ON Time versus

Temperature

−40

0

100

40

1.8

1.2

1.4

TA, AMBIENT TEMPERATURE (°C)

1.3

1.5

1.6

1.7

0

20

120

100

1.9

0.6

1.1

ILOAD, OUTPUT LOADING CURRENT (mA)

0.9

1.4

1.6

Figure 8. Min. Startup Battery Voltage versus

Loading Current

35

−20

40

60

80

VOUT = 3.3 V

L = 22

mH

CIN = 10 mF

COUT = 33 mF

CREF = 1 mF

TA = 25°C

VIN = 1.8 V

VIN = 2.2 V

VIN = 3.0 V

CREF = 1 mF

TA = 25°C

IREF = 2.5 mA

IREF = 0 mA

VOUT = 3.3 V

CREF = 150 nF

IREF = 0 mA

−20

40

60

80

VOUT = 3.3 V

P−FET (M2)

N−FET (M1)

−20

20

80

60

40

60

80

WITHOUT SCHOTTKY DIODE

WITH SCHOTTKY DIODE

(MBR0502)

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