ADP3050 datasheet(2/16 Pages) AD

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–2–

REV. 0

ADP3050–SPECIFICATIONS (V

IN = 10 V, TA = –40 C to +85 C, unless otherwise noted)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

FEEDBACK

Feedback Voltage

VFB

Over Line and Temperature

ADP3050

1.16

1.20

1.24

ADP3050-3.3

3.20

3.30

3.40

ADP3050-5

4.85

5.00

5.15

Line Regulation

VIN = 10 V to 30 V, no load

0.005

%/V

Load Regulation

ILOAD = 100 mA to 1 A,

ADP3050AR Only

–1.0

+0.1

+1.0

%/A

ADP3050AR-3.3, ADP3050AR-5

–0.5

+0.1

+0.5

%/A

Input Bias Current

IFB

ADP3050AR Only

0.65

µA

ERROR AMPLIFIER

Transconductance2

1250

µMho

Voltage Gain

AVOL

300

V/V

Output Current

ADP3050

COMP = 1.0 V, FB = 1.1 V to 1.3 V

±115

µA

ADP3050-3.3

COMP = 1.0 V, FB = 3.0 V to 3.6 V

±120

µA

ADP3050-5

COMP = 1.0 V, FB = 4.5 V to 5.5 V

±135

µA

OSCILLATOR

Oscillator Frequency

fOSC

170

200

240

kHz

Minimum Duty Cycle

DMIN

Maximum Duty Cycle

DMAX

SWITCH

Average Output Current Limit

ICL(AVG)

ADP3050

BOOST = 15 V, FB = 1.1 V

1.0

1.25

1.5

ADP3050-3.3

BOOST = 15 V, FB = 3.0 V

1.0

1.25

1.5

ADP3050-5

BOOST = 15 V, FB = 4.5 V

1.0

1.25

1.5

Peak Switch Current Limit

ICL(PEAK)

1.5

1.7

2.1

Saturation Voltage

BOOST = 15 V, ILOAD = 1 A

0.65

0.95

Leakage Current

SHUTDOWN

Input Voltage Low

0.4

Input Voltage High

2.0

SUPPLY

Minimum Input Voltage

VIN

3.6

Minimum BIAS Voltage

VBIAS

3.0

Minimum BOOST Voltage

VBOOST

3.0

IN Supply Current

Normal Mode

BIAS = 5.0 V

0.7

1.5

Shutdown Mode

SD = 0 V, V

≤ 30 V

µA

BIAS Supply Current

IBIAS

BIAS = 5.0 V

4.0

6.0

BOOST Supply Current

IBOOST

BOOST = 15 V, ISW = 0.5 A

BOOST = 15 V, ISW = 1.0 A

NOTES

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

2Transconductance and voltage gain measurements refer to the internal amplifier without the voltage divider. To calculate the transconductance and gain of the fixed

voltage parts, divide the values shown by FB/1.20.

3The switching frequency is reduced when the feedback pin is lower than 0.8

FB.

4See Figure 22 for test circuit.

5Switch current limit is measured with no diode, no inductor, and no output capacitor.

6Minimum input voltage is not measured directly, but is guaranteed by other tests. The actual minimum input voltage needed to keep the output in regulation will

depend on output voltage and load current.

Specifications subject to change without notice.

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