LM3673 datasheet(6/28 Pages) TI

部品番号	LM3673

部品情報	2-MHz, 350-mA Step-Down DC-DC Converter

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メーカー	TI [Texas Instruments]

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-40

-20

0

20

40

60

80

100

TEMPERATURE (°C)

VIN = 2.7V

VIN = 3.6V

VIN = 4.5V

VIN = 3.6V

VIN = 4.5V

VIN = 2.7V

650

700

750

800

850

900

950

Closed Loop = Solid

Open Loop = Dash

-10

10

30

50

70

90

110

TEMPERATURE (

oC)

100

150

200

250

300

350

400

450

500

550

600

-30

NFET

VIN = 4.5V

PFET

VIN = 2.7V

VIN = 4.5V

VIN = 3.6V

VIN = 2.7V

-10

10

30

50

70

90

TEMPERATURE (°C)

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

-30

EN = GND

VIN = 3.6V

VIN = 2.7V

VIN = 5.5V

3.0

3.5

4.0

4.5

5.0

5.5

6.0

SUPPLY VOLTAGE (V)

10

12

14

16

18

20

2.5

TA = 85°C

EN = VIN

IOUT = 0 mA

TA = 25°C

TA = -30°C

LM3673

SNVS434L – JULY 2006 – REVISED OCTOBER 2015

www.ti.com

7.6 Typical Characteristics

LM3673TL typical application (Figure 17), VIN = 3.6 V, VOUT= 1.5 V, TA = 25°C, unless otherwise noted.

Figure 1. Quiescent Supply Current vs. Supply Voltage

Figure 2. Shutdown Current vs. Temperature

Figure 3. Feedback Bias Current vs. Temperature

Figure 4. Switching Frequency vs. Temperature

Figure 5. RDSON vs. Temperature

Figure 6. Open/Closed Loop Current Limit vs. Temperature

6

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