SI9185DMP-33-T1 datasheet(4/12 Pages) VISHAY

номер детали	SI9185DMP-33-T1

подробное описание детали	Micropower 500-mA CMOS LDO Regulator

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Si9185

Vishay Siliconix

www.vishay.com

4

Document Number: 71765

S-20641—Rev. B, 06-May-02

SPECIFICATIONS

Limits

–40 to 85

_C

Test Conditions

Unless Otherwise Specified

VIN = VOUT(nom) + 1 V, IOUT = 1 mA

CIN = 2.2 mF, COUT = 2.2 mF, VSD = 1.5 V

Parameter

Unit

Maxb

Typc

Minb

Tempa

Test Conditions

Unless Otherwise Specified

VIN = VOUT(nom) + 1 V, IOUT = 1 mA

CIN = 2.2 mF, COUT = 2.2 mF, VSD = 1.5 V

Symbol

IIH

VSD = 0 V, Regulator OFF

Room

0.01

m

SD Input Currente

IIL

VSD = 6 V, Regulator ON

Room

1.0

mA

Shutdown Hysteresis

VHYST

Full

100

mV

Error Output

Output High Leakage

IOFF

ERROR = VOUT(nom)

Full

0.01

2

mA

Output Low Voltageg

VOL

ISINK = 2 mA

Full

0.4

Out-of-Regulation Error Flag

Threshold Voltage (rising)g

VTH

Full

0.93 x

VOUT

0.95 x

VOUT

0.97 x

VOUT

V

Hysteresisg

VHYST

Room

2% x

VOUT

Delay Pin Current Source

IDELAY

Room

1.2

2.2

3.0

mA

Notes

a.

Room = 25

_C, Full = –40 to 85_C.

b.

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

c.

Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. Typical values for dropout voltage at VOUT w 2 V are measured at

VOUT = 3.3 V, while typical values for dropout voltage at VOUT < 2 V are measured at VOUT = 1.8 V.

d.

Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 2% below the output voltage measured with a 1-V

differential, provided that VIN does not not drop below 2.0 V. When VOUT(nom) is less than 2.0 V, the output will be in regulation when 2.0 V – VOUT(nom) is

greater than the dropout voltage specified.

e.

The device’s shutdown pin includes a typical 6-M

W internal pull-down resistor connected to ground.

f.

VOUT is defined as the output voltage of the DUT at 1 mA.

g.

The Error Output (Low) function is guaranteed for VIN w2.0 V.

TIMING WAVEFORMS

VIN

0.95 VNOM

VOUT

ERROR

VNOM

tDELAY

FIGURE 4. Timing Diagram for Power-Up

tON

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