SP4446 datasheet(8/10 Pages) SIPEX

部件名	SP4446

功能描述	High Output Voltage Boost Regulator LCD Bias Regulator

PDF	10 Pages

Scroll/Zoom	100%

制造商	SIPEX [Sipex Corporation]

网页	http://www.sipex.com

标志

8 / 10 page

Rev. 7/14/03

SP4446 High Output Voltage Boost Regualtor, LCD Bias Regulator

VOUT (AC)

IOUT (5mA/DIV)

VSW

VOUT (AC)

IL (0.1A/DIV)

VSW

VIN

VOUT

IIN (100mA/DIV)

Figure 16. Startup Waveform (VIN=3.3V, VOUT=20V,

IOUT=2mA)

Figure 17. Typical Switching Waveforms (VIN=3.3V,

VOUT=20V, IOUT=5mA)

Figure 18. Load Step Transient (VIN=3.3V, VOUT=20V,

1O=100

µA∼5mA)

Figure 13. IPK Current Limit vs. VIN

Figure 14. Feedback Voltage vs. Temperature

100

150

200

250

Input Voltage (V)

1.18

1.19

1.20

1.21

1.22

1.23

1.24

1.25

-40

-15

Temperature (C)

PERFORMANCE CHARACTERISTICS: Continued

Refer to the typical application circuit, TAMB = 25°C, unless otherwise specified.

Figure 15. Switch Saturation Voltage VCESAT vs.

Temperature (ISW=50mA)

-40

-15

Temperature (C)

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