Preliminary

Datasheet

LP78086

LP78086 –00 Ver. 1.0 Datasheet

Feb.-2008

Page 4 of 9

Electrical Characteristics

(VIN = 3.6V, VOUT1 = 2.5V, VREF = 0.6V, L = 2.2µH, CIN= 4.7µF, COUT= 10µF, TA= 25°C, IMAX = 600mA

unless otherwise specified)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Input Voltage Range

VIN

2.5

5.5

V

Quiescent Current

IQ

IOUT = 0mA, VFB =0.5V

IOUT = 0mA, VFB =0.7V

270

25

350

35

uA

Shutdown Current

ISHDN

EN = GND

0.1

1

uA

VFB1

For DC/DC adjustable output voltage

0.588

0.60

0.612

V

VFB2

For LDO2 adjustable output voltage

1.18

1.21

1.24

V

Reference Voltage

VFB3

For LDO3 adjustable output voltage

1.18

1.21

1.24

V

Adjustable Output Range

VOUT

VREF

VIN −

0.2

V

Δ

VOUT

VIN = 2.2 to 5.5V, VOUT = 1.2V 0A <

IOUT < 650mA

−

3

+3

%

Δ

VOUT

VIN = 2.2 to 5.5V, VOUT = 1.5V 0A <

IOUT < 650mA

−

3

+3

%

Output

Voltage

Δ

VOUT

VIN = 2.2 to 5.5V, VOUT = 1.8V 0A <

IOUT < 650mA

−

3

+3

%

Accuracy

Δ

VOUT

VIN = 2.8 to 5.5V, VOUT = 2.5V 0A <

IOUT < 650mA

−

3

+3

%

Fixed

Δ

VOUT

VIN = 3.5 to 5.5V, VOUT = 3.3V 0A <

IOUT < 650mA

−

3

+3

%

Δ

VOUT

VIN = VOUT + 0.2V to 5.5V, VIN ≧

3.5V 0A < IOUT < 650mA

−

3

+3

%

Adjustable

Δ

VOUT

VIN = VOUT + 0.4V to 5.5V, VIN ≧

2.2V 0A < IOUT < 650mA

−

3

+3

%

LDO Output

current

300

350

400

mA

PMOSFET

RON

PRDS(ON)

IOUT =

200mA

VIN = 3.6V

0.45

0.53

Ω

NMOSFET

RON

NRDS(ON)

IOUT =

200mA

VIN = 3.6V

0.45

Ω

P-Channel

Current Limit

IP(LM)

VIN =2.2

to 5.5V

600

800

1000

mA

EN

Threshold

VEN

0.8

1.2

1.5

V

EN Leakage

Current

VENL

--

2

uA