LDS3985M30R 参数 Datasheet PDF下载

LDS3985 SERIES

Table 5: Electrical Characteristics For LDS3985

(T

j

= 25°C, V

I

= V

O(NOM)

+0.5V, C

I

= 1µF, C

O

= 2.2µF

C

BYP

= 33nF, I

O

= 1mA, V

INH

= 1.4V, unless otherwise specified)

Symbol

V

I

V

O

V

O

∆V

O

∆V

O

∆V

O

∆V

O

I

Q

Parameter

Operating Input Voltage

Output Voltage < 2.5V

Output Voltage

≥

2.5V

Line Regulation (Note 1)

Load Regulation

Load Regulation

I

O

= 1 mA

T

J

= -40 to 125°C

I

O

= 1 mA

T

J

= -40 to 125°C

V

I

= V

O(NOM)

+ 0.5 to 6 VT

J

= -40 to 125°C

V

O

= 4.7 to 5V

I

O

= 1 mA to 300mA

T

J

= -40 to 125°C

I

O

= 1 mA to 300mA

T

J

= -40 to 125°C

V

O

≤

2.5V

V

O

≥

2.5V

Test Conditions

Min.

2.5

-50

-75

-2

-3

-0.1

-0.19

0.005

0.0008

5

85

T

J

= -40 to 125°C

200

T

J

= -40 to 125°C

0.003

T

J

= -40 to 125°C

V

DROP

Dropout Voltage (Note 3)

I

O

= 1mA

I

O

= 1mA

I

O

= 150mA

I

O

= 150mA

I

O

= 300mA

I

O

= 300mA

I

SC

SVR

Short Circuit Current

Supply Voltage Rejection

R

L

= 0

f = 1KHz

V

I

= V

O(NOM)

+0.25V ±

V

RIPPLE

= 0.1V, I

O

= 50mA f = 10KHz

For V

O(NOM)

< 2.5V, V

I

=2.55V

V

O

≥

V

O(NOM)

- 5%

V

I

= 2.5V to 6V

V

INH

= 0.4V

C

BYP

= 33 nF

Note 5

Capacitance (Note 6)

ESR

2.2

5

T

J

= -40 to 125°C

1.4

V

I

= 6V

C

O

= 2.2

µF

±1

30

240

160

22

5000

nA

µV

RMS

µs

°C

µF

mΩ

B

W

= 10 Hz to 100 KHz

300

T

J

= -40 to 125°C

600

55

50

550

0.4

T

J

= -40 to 125°C

150

250

mA

dB

T

J

= -40 to 125°C

60

100

0.4

2

1.5

mV

300

150

Typ.

Max.

6

50

75

2

3

0.1

0.19

0.01

0.004

%/mA

%/mA

mV

PP

µA

% of

V

O(NOM)

%/V

Unit

V

mV

Output AC Line Regulation V

I

= V

O(NOM)

+ 1 V, I

O

= 300mA,

(Note 2)

t

R

= t

F

= 30µs

Quiescent Current

ON MODE: V

INH

= 1.24V

I

O

= 0

I

O

= 0

I

O

= 0 to 300mA

I

O

= 0 to 300mA

OFF MODE: V

INH

= 0.4V

I

O(PK)

V

INH

I

INH

eN

t

ON

T

SHDN

C

O

Peak Output Current

Inhibit Input Logic Low

Inhibit Input Logic High

Inhibit Input Current

Output Noise Voltage

Turn On Time (Note 4)

Thermal Shutdown

Output Capacitor

mA

V

Note 1: For V

O(NOM)

< 2V V

I

= 2.5V

Note 2: For V

O(NOM)

=1.25V V

I

= 2.5V

Note 3: Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This specifi-

cation does not apply for input voltages below 2.5V.

Note 4: Turn -on time is time measured between the enable input just exceeding V

INH

High Value and the output voltage just reaching 95%

of its nominal value

Note 5: Typical thermal protection hysteresis is 20°C

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