ADP3000 datasheet(2/12 Pages) AD

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–2–

REV. 0

ADP3000–SPECIFICATIONS

ADP3000

Parameter

Conditions

Symbol

Min

Typ

Max

Units

INPUT VOLTAGE

Step-Up Mode

VIN

2.0

12.6

Step-Down Mode

30.0

SHUTDOWN QUIESCENT CURRENT

VFB > 1.43 V; VSENSE > 1.1

× V

OUT

500

µA

COMPARATOR TRIP POINT

ADP3000

1.20

1.245

1.30

VOLTAGE

OUTPUT SENSE VOLTAGE

ADP3000-3.3

3.135

3.3

3.465

ADP3000-52

VOUT

4.75

5.00

5.25

ADP3000-12

11.40

12.00

12.60

COMPARATOR HYSTERESIS

ADP3000

12.5

OUTPUT HYSTERESIS

ADP3000-3.3

ADP3000-5

ADP3000-12

120

OSCILLATOR FREQUENCY

fOSC

350

400

450

kHz

DUTY CYCLE

VFB > VREF

D65

SWITCH ON TIME

ILIM Tied to VIN, VFB = 0

tON

1.5

2.55

µs

SWITCH SATURATION VOLTAGE

TA = +25

°C

STEP-UP MODE

VIN = 3.0 V, ISW = 650 mA

VSAT

0.5

0.75

VIN = 5.0 V, ISW = 1 A

0.8

1.1

STEP-DOWN MODE

VIN = 12 V, ISW = 650 mA

1.1

1.5

FEEDBACK PIN BIAS CURRENT

ADP3000 VFB = 0 V

IFB

160

330

SET PIN BIAS CURRENT

VSET = VREF

ISET

200

400

GAIN BLOCK OUTPUT LOW

ISINK = 300

µAV

0.15

0.4

VSET = 1.00 V

REFERENCE LINE REGULATION

5 V

≤ V

IN ≤ 30 V

0.02

0.15

%/V

2 V

≤ V

≤ 5 V

0.2

0.6

%/V

GAIN BLOCK GAIN

RL = 100 kΩ

1000

6000

V/V

GAIN BLOCK CURRENT SINK

VSET

≤ 1 V

ISINK

300

µA

CURRENT LIMIT

220

Ω from I

LIM to VIN

ILIM

400

CURRENT LIMIT TEMPERATURE

COEFFICIENT

–0.3

°C

SWITCH OFF LEAKAGE CURRENT

Measured at SW1 Pin

µA

VSW1 = 12 V, TA = +25

°C

MAXIMUM EXCURSION BELOW GND

TA = +25

°C

ISW1

≤ 10 µA, Switch Off

–400

–350

NOTES

1This specification guarantees that both the high and low trip point of the comparator fall within the 1.20 V to 1.30 V range.

2The output voltage waveform will exhibit a sawtooth shape due to the comparator hysteresis. The output voltage on the fixed output versions will always be within the

specified range.

3100 k

Ω resistor connected between a 5 V source and the AO pin.

*All limits at temperature extremes are guaranteed via correlation using standard statistical methods.

Specifications subject to change without notice.

(0 C

≤ T

≤ +70 C, V

IN = 3 V unless otherwise noted)*

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