CS5305GDWR28 datasheet(6/33 Pages) ONSEMI

Il numero della parte	CS5305GDWR28

Spiegazioni elettronici	Three?뭁hase Synchronous Switching Step?묭own Controller with Single Wire Current Sharing

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Produttore elettronici	ONSEMI [ON Semiconductor]

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CS5305

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ELECTRICAL CHARACTERISTICS (continued) (0°C < TA < 70°C; 0°C < TJ < 125°C; 9.5 V < VCC < 14 V; CGATEX = 100 pF,

CCOMP = 0.01μF, CSCOMP = 0.01μF, CVCC = 0.1μF, RROSC = 32.4 kΩ, RSHARE = 60.4 kΩ, V(OCSET) = 0.54 V, DAC Code 01110; unless

otherwise stated.)

Parameter

Unit

Max

Typ

Min

Test Conditions

Power Good Output

0

1

0

1

1.330

1.365

1.400

V

0

1

0

1.354

1.389

1.425

V

0

1

0

1

1.378

1.414

1.450

V

0

1

0

1

0

1.401

1.438

1.475

V

0

1

0

1

1.425

1.463

1.500

V

0

1

0

1.449

1.487

1.525

V

0

1

1.473

1.511

1.550

V

0

1

0

1.496

1.536

1.575

V

0

1

0

1

1.520

1.560

1.600

V

0

1

0

1.544

1.584

1.625

V

0

1

1.568

1.609

1.650

V

0

1

0

1.591

1.633

1.675

V

0

1

1.615

1.658

1.700

V

0

1.639

1.682

1.725

V

Switch Leakage Current

VCC = 14 V, PWRGDS = 1.4 V

−

1.0

μA

Delay

PWRGDS low to PWRGD low

50

250

600

μs

Output Low Voltage

PWRGDS = 1.0 V,

IPWRGOOD = 4.0 mA

−

0.15

0.4

V

Voltage Feedback Error Amplifier

VFB Bias Current

Note 2.

9.5

10.3

11.5

μA

Comp Source Current

COMP = 0.5 V to 2.0 V,

VFB = 1.6 V

15

30

60

μA

Comp Sink Current

COMP = 0.5 V to 2.0 V,

VFB = 1.0 V

15

30

60

μA

Transconductance

−10 μA < ICOMP < +10 μA, Note 3.

−

32.0

−

mmho

Output Impedance

Note 3.

−

2.5

−

mΩ

Open Loop DC Gain

Note 3.

60

95

−

dB

Unity Gain Bandwidth

COMP = 0.01 μF, Note 3.

−

50

−

kHZ

PSRR @ 1.0 kHz

Note 3.

−

70

−

dB

COMP Max Voltage

VFB = 0 V

2.4

2.7

−

V

COMP Min Voltage

VFB = 1.6 V

−

0.1

0.2

V

COMP Discharge Threshold

−

0.15

0.2

0.25

V

Hiccup Latch Discharge Current

CSx − CSREF = .05 V,

OCSET = 0.1 V,

COMP = 0.5 V

2.0

5.0

10

μA

Hiccup Charge / Discharge Ratio

−

4.5

6.0

7.5

−

2. The VFB Bias Current changes with the value of ROSC per Figure 5.

3. Guaranteed by design. Not tested in production.

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