ADP3088(RevC) Ver la hoja de datos (PDF) - Analog Devices

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ADP3088
(Rev.:RevC)

1 MHz, 750 mA Buck Regulator

Analog Devices 

ADP3088–SPECIFICATIONS1

(VIN = 3.3 V, TA = –40؇C to +85؇C, unless otherwise noted.)

Parameter

Symbol

Conditions

Min Typ Max

Unit

SUPPLY

Input Voltage Range

Ground Current, Operating

VIN

IGND2

Quiescent Current, Operating IQ

Shutdown

ISD

Thermal Shutdown Threshold TSD

DRV = GND

VIN = 10 V, IL = 500 mA,

DRV = GND

DRV = 2 V

No Load

VCOMP = 0 V

2.5

11

6

2.5 3.6

150 250

15

40

160

OSCILLATOR

Oscillator Frequency

fSW

0.75 1

1.25

Minimum Sleep Duty Cycle

DPSM

IL = 500 mA

14

Maximum Duty Cycle

Wake-Up Hysteresis

DMAX

VHYST

100

FB Voltage Drops below VREF

20

OUTPUT SWITCH

Switch-On Voltage

VIO3

E Current Limit Threshold

ILIM

Leakage Current

IL = 500 mA, FB = GND, and

DRV = GND

1.0

VIN = 12 V

ERROR AMPLIFIER

T Reference Voltage Accuracy

Reference Voltage Line

Regulation

Feedback Input Bias Current

E Sink/Source Current

Short Circuit Current

L Transconductance

VREF

IFB

ICOMP

ICOMP, SD

gm, EA

FB = COMP

FB = COMP,

VIN = 3 V to 12 V

Soft Start Expired

VCOMP = 0 V, Activating

Shutdown

FB = COMP

1.222

–50

35

MODULATOR

Transconductance

gm, MOD

VCOMP to IL

Control Offset Voltage

VPWM, OS

Soft Start Time

tSS

O Shutdown Threshold Voltage VCOMP, SD

340

Slope Compensation

mSC

Effectively Summed to ISW

NOTES

S 1All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).

2For higher efficiency operation, tie the DRV pin to the output for IL < 250 mA and VIN > 3 V.

3VIN – VSW includes voltage drop across internal current sensor.

OB Specifications subject to change without notice.

30

0.25

1.2

0.5

1.245

0.02

+1

60

20

480

1

0.90

250

0.7

40

0.4

1.4

1.265

+50

85

40

600

750

V

mA

mA

mA

mA

∞C

MHz

%

%

mV

V

A

mA

V

%/V

nA

mA

mA

mA/V

A/V

V

ms

mV

A/ms

–2–

REV. C

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