NCP1411 View Datasheet(PDF) - ON Semiconductor

Part Name

Description

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NCP1411

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

ON Semiconductor 

NCP1411

TYPICAL OPERATING CHARACTERISTICS

1.220

1.215

1.210

1.205

VOUT = 3.3 V

L = 22 mH

CIN = 10 mF

COUT = 33 mF

CREF = 1 mF

TA = 25°C

VIN = 1.8 V

1.195

1.192

1.189

IREF = 0 mA

1.200

VIN = 2.2 V

1.186

IREF = 2.5 mA

1.195

1.190

1

VIN = 3.0 V

1.183

1.180

CREF = 1 mF

TA = 25°C

10

100

1000

1

2

3

4

5

6

ILOAD, OUTPUT CURRENT (mA)

VOUT, INPUT VOLTAGE AT OUT PIN (V)

Figure 3. Reference Voltage versus Output

Current

Figure 4. Reference Voltage versus Input

Voltage at OUT Pin

1.194

1.5

1.192

1.190

1.188

1.186

VOUT = 3.3 V

CREF = 150 nF

IREF = 0 mA

1.184

−40 −20

0

20 40 60 80 100

TA, AMBIENT TEMPERATURE (°C)

Figure 5. Reference Voltage versus

Temperature

1.2

P−FET (M2)

0.9

0.6

N−FET (M1)

0.3

VOUT = 3.3 V

0

−40 −20

0

20 40 60 80 100

TA, AMBIENT TEMPERATURE (°C)

Figure 6. Switch ON Resistance versus

Temperature

1.8

1.7

1.6

1.5

1.4

1.3

1.2

−40

−20

0

20 40 60 80 100

TA, AMBIENT TEMPERATURE (°C)

Figure 7. LX Switch Max. ON Time versus

Temperature

1.9

WITHOUT SCHOTTKY DIODE

1.6

1.4

1.1

WITH SCHOTTKY DIODE

(MBR0502)

0.9

0.6

0

20

40

60

80

100 120

ILOAD, OUTPUT LOADING CURRENT (mA)

Figure 8. Min. Startup Battery Voltage versus

Loading Current

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