CS5302 datasheet(4/17 Pages) ONSEMI

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CS5302

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ELECTRICAL CHARACTERISTICS (continued) (0°C < TA < 70°C; 0°C < TJ < 125°C; 4.7 V < VCCL < 14 V; 10 V < VCCH < 20 V;

CGATE(H) = 3.3 nF, CGATE(L) = 3.3 nF, RR(OSC) = 32.4 k, CCOMP = 1.0 nF, CSS = 0.1 μF, CREF = 0.1 μF, DAC Code 1001, CVCC = 1.0 μF,

ILIM ≥ 1.0 V; unless otherwise specified.)

Characteristic

Unit

Max

Typ

Min

Test Conditions

Voltage Identification DAC (0 = Connected to VSS; 1 = Open or Pull−up to 3.3 V)

Not Allowed

−

Not Allowed

−

Not Allowed

−

Input Threshold

VID3, VID2, VID1, VID0

1.00

1.25

1.50

Input Pull−up Resistance

VID3, VID2, VID1, VID0

100

kΩ

Pull−up Voltage

−

3.15

3.30

3.45

Power Good Output

Power Good Fault Delay

CSREF = VDAC to VDAC ± 15%

125

μs

Output Low Voltage

CSREF = 1.0 V, IPWRGD = 4.0 mA

−

0.25

0.40

Output Leakage Current

CSREF = 1.6 V, PWRGD = 5.5 V

−

0.1

μA

Lower Threshold

% of Nominal VID Code

−14

−11

−8

Upper Threshold

% of Nominal VID Code

Voltage Feedback Error Amplifier

VFB Bias Current (Note 2)

1.2 V < VFB < 1.9 V

9.0

10.3

11.5

μA

COMP Source Current

COMP = 0.5 V to 2.0 V;

VFB = 1.75 V; DAC = 0101

μA

COMP Sink Current

COMP = 0.5 V to 2.0 V;

VFB = 1.85 V; DAC = 0101

μA

COMP Max Voltage

VFB = 1.75 V COMP Open; DAC = 0101

2.4

2.7

−

COMP Min Voltage

VFB = 1.85 V COMP Open; DAC = 0101

−

0.1

0.2

Transconductance

−10 μA < ICOMP < +10 μA

−

mmho

Output Impedance

−

2.5

−

MΩ

Open Loop DC Gain

Note 3

−

Unity Gain Bandwidth

0.01 μF COMP Capacitor

−

400

−

kHz

PSRR @ 1.0 kHz

−

Soft Start

Soft Start Charge Current

0.2 V ≤ SS ≤ 3.0 V

μA

Soft Start Discharge Current

0.2 V ≤ SS ≤ 3.0 V

4.0

7.5

μA

Hiccup Mode Charge/Discharge Ratio

−

3.0

4.0

−

Peak Soft Start Charge Voltage

−

3.3

4.0

4.2

Soft Start Discharge Threshold Voltage

−

0.20

0.27

0.34

2. The VFB Bias Current changes with the value of ROSC per Figure 4.

3. Guaranteed by design. Not tested in production.

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