SI9166_04 datasheet(3/11 Pages) VISHAY

部件名	SI9166

功能描述	High Frequency Programmable Topology Controller

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制造商	VISHAY [Vishay Siliconix]

网页	http://www.vishay.com

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Si9166

Vishay Siliconix

Document Number: 70847

S-40701—Rev. C, 19-Apr-04

www.vishay.com

3

SPECIFICATIONS

Limits

Test Conditions

Unless Otherwise Specified

2.7 V v VDD, VS v 6 V

Parameter

Unit

Maxa

Typb

Mina

Test Conditions

Unless Otherwise Specified

2.7 V v VDD, VS v 6 V

Symbol

Oscillator

Maximum Frequency

FOSC

2

MHz

Accuracy

Nominal 1.60 MHz, ROSC = 30 kW

−20

20

Maximum Duty Cycle—Buck

DMAX

Fsw = 2 MHz (non LDO mode)

75

85

%

Maximum Duty Cycle—Boost

DMAX

Fsw = 2 MHz

52

65

SYNC Range

FSYNC/FOSC

1.2

1.5

SYNC Low Pulse Width

50

SYNC High Pulse Width

50

ns

SYNC tr, tf

50

Error Amplifier

Input Bias Current

IBIAS

VFB = 1.4 V

−1

1

mA

Open Loop Voltage Gain

AVOL

50

60

dB

FB Threshold

VFB

TA = 25_C

1.270

1.30

1.330

V

FB Threshold

VFB

1.258

1.30

1.342

V

Unity Gain BW

BW

2

MHz

Output Current

IEA

Source (VFB = 1.05 V), VCOMP = 0.75 V

−3

−1

mA

Output Current

IEA

Sink (VFB = 1.55 V), VCOMP = 0.75 V

1

3

mA

Power Supply Rejection

PSRR

60

dB

Output Drive (DH and DL)

Output High Voltage

VOH

VS = 3.3 V, IOUT = −20 mA

3.18

3.24

V

Output Low Voltage

VOL

VS = 3.3 V, IOUT = 20 mA

0.06

0.12

V

Peak Output Source

ISOURCE

VS = 3 3 V DH = DL = VS/2

−750

−500

mA

Peak Output Sink

ISINK

VS = 3.3 V, DH = DL = VS/2

500

750

mA

Break-Before-Make

tBBM

VS = VDD = 3.3 V

30

ns

Supply

Normal Mode

VDD = 3.3 V, FOSC = 2 MHz

500

750

PSM Mode

IDD

VDD = 3.3 V

180

250

mA

Shutdown Mode

VDD = 3.3 V, SD = 0 V

1

Notes

a.

The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.

b.

Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.

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