MC34726AFC 데이터 시트보기 (PDF) - Freescale Semiconductor

부품명

상세내역

제조사

MC34726AFC

300 mA High Efficiency Low Quiescent Current Synchronous Buck Regulator With Z-mode

Freescale Semiconductor 

ELECTRICAL CHARACTERISTICS

ELECTRICAL PERFORMANCE CURVES

ELECTRICAL PERFORMANCE CURVES

100

80

60

40

20

0

0.1

V =2.7V

IN

V =3.6V

IN

V =5.5V

IN

1

10

100 1000

I (mA)

LOAD

Figure 4. Efficiency vs. Load Current

VIN = 3.6 V, VOUT = 1.8 V, TA=25oC

1.00

0.75

I =0mA

LOAD

I =100mA

LOAD

I =300mA

LOAD

0.50

0.25

0.00

-0.25

2.5 3.0 3.5 4.0 4.5 5.0 5.5

V (V)

IN

Figure 5. Line Regulation

VIN is 2.7 V to 5.5 V and VOUT is 1.8 V, TA=25oC

0.75

0.50

0.25

0.00

-0.25

0

V =2.7V

IN

V =3.6V

IN

V =5.5V

IN

50 100

150

200

250

I (mA)

LOAD

Figure 6. Load Regulation

1.0 mA < ILOAD < 300 mA, VOUT = 1.8 V

300

Time: 500 μs/DIV

VEN (10 V/DIV)

VOUT (200 mV/DIV)

IL (200 mA/DIV)

Figure 7. Start-up Response

ILOAD = 0 mA, VOUT=1.2 V

Time: 100 μs/DIV

VOUT (1.0 V/DIV)

VSW (2.0 V/DIV)

IL (200 mA/DIV)

Figure 8. Sleepy Z-ModeTM Switching Waveforms

VIN = 3.6 V, VOUT = 1.8 V and ILOAD = 1.0 mA

Time: 5.0 μs/DIV

VOUT (1.0 V/DIV)

VSW (2.0 V/DIV)

IL (200 mA/DIV)

Figure 9. Z-ModeTM Switching Waveforms

VIN = 3.6 V, VOUT = 1.8 V and ILOAD = 10 mA

34726

8

Analog Integrated Circuit Device Data

Freescale Semiconductor

Share Link: