ADP3209D datasheet(4/27 Pages) ONSEMI

Numer części	ADP3209D

Szczegółowy opis	Single-Phase, Synchronous Buck Controller

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ADP3209D

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ELECTRICAL CHARACTERISTICS VCC = 5.0V, FBRTN = GND, VARFREQ = Low, VVID = 1.25 V, TA = −10°C to 100°C, unless

otherwise noted (Note 1). Current entering a pin (sunk by the device) has a positive sign. RREF = 80 kW.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

VOLTAGE CONTROL − Voltage Error Amplifier (VEAMP)

FB, LLINE Voltage

Range (Note 2)

VFB, VLLINE

Relative to CSREF = VDAC

−200

+200

mV

FB, LLINE Offset

Voltage (Note 2)

VOSVEA

Relative to CSREF = VDAC

−0.5

+0.5

mV

FB Bias Current

(Note 2)

IFB

−1.0

+1.0

mA

LLINE Bias Current

ILL

−50

+50

nA

LLINE Positioning

Accuracy

VFB − VVID

Measured on FB relative to VVID, LLINE forced 80

mV below CSREF

−78

−80

−82

mV

COMP Voltage Range

(Note 2)

VCOMP

0.85

4.0

V

COMP Current

ICOMP

COMP = 2.0 V, CSREF = VDAC

FB forced 200 mV below CSREF

FB forced 200 mV above CSREF

−0.75

3.0

mA

COMP Slew Rate

SRCOMP

CCOMP = 10 pF, CSREF = VDAC,

Open loop configuration

FB forced 200 mV below CSREF

FB forced 200 mV above CSREF

15

−20

V/ms

Gain Bandwidth

(Note 2)

GBW

Non−inverting unit gain configuration, RFB = 1 kW

20

MHz

VID DAC VOLTAGE REFERENCE

VDAC Voltage Range

(Note 3)

See VID Code Table

0

1.5

V

VDAC Accuracy

VFB − VVID

Measured on FB (includes offset), relative to VVID,

for VID table see Table 1, TA = −10°C to 85°C

−6.0

+6.0

mV

VDAC Differential Non−linearity (Note 2)

−1.0

+1.0

LSB

VDAC Line Regulation

DVFB

VCC = 4.75 V to 5.25 V

0.05

%

Soft−Start Delay

(Note 2)

tSS

Measured from EN pos edge to FB = 1.25 V

within 5%

1.8

ms

VDAC Slew Rate

Soft−Start

Non−LSB VID step

0.0312

5.0

0.5

LSB/ms

FBRTN Current

IFBRTN

70

200

mA

VOLTAGE MONITORING AND PROTECTION − Power Good

CSREF Undervoltage

Threshold

VUVCSREF

Relative to nominal DAC Voltage

−360

−300

−240

mV

CSREF Overvoltage

Threshold

VOVCSREF

Relative to nominal DAC Voltage

80

200

250

mV

CSREF Crowbar

Voltage Threshold

(Note 2)

VCBCSREF

Relative to FBRTN

1.57

1.7

1.78

V

CSREF Reverse

Voltage Threshold

VRVCSREF

Relative to FBRTN, Latchoff mode:

CSREF Falling

CSREF Rising

−350

−300

−75

−5.0

mV

PWRGD Low Voltage

VPWRGD

IPWRGD(SINK) = 4 mA

50

150

mV

PWRGD High, Leakage

Current

IPWRGD

VPWRDG = 5.0 V

0.1

mA

PWRGD Startup Delay

TSSPWRGD

Measured from EN pos edge to PWRGD pos edge

2.0

ms

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

2. Guaranteed by design or bench characterization, not production tested.

3. Timing is referenced to the 90% and 10% points, unless otherwise noted.

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