CS5301 datasheet(6/20 Pages) ONSEMI

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CS5301

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ELECTRICAL CHARACTERISTICS (continued) (0

°C < TA < 70°C; 0°C < TJ < 125°C; 4.7 V < VCCL < 14 V; 8.0 V < VCCH < 20 V;

CGATE(H) = 3.3 nF, CGATE(L) = 3.3 nF, RROSC = 53.6 k, CCOMP = 0.1 µF, CREF = 0.1 µF, DAC Code 10000, CVCC = 1.0 µF, ILIM ≥ 1.0 V;

unless otherwise specified.)

Characteristic

Unit

Max

Typ

Min

Test Conditions

Voltage Feedback Error Amplifier

VFB Bias Current, (Note 2)

0.9 V < VFB < 1.8 V

5.5

6.0

6.5

µA

COMP Source Current

COMP = 0.5 V to 2.0 V;

VFB = 1.6 V; DAC = 00000

µA

COMP Sink Current

COMP = 0.5 V to 2.0 V;

VFB = 1.8 V; DAC = 00000

µA

COMP Discharge Threshold Voltage

–

0.20

0.27

0.34

Transconductance

–10

µA < ICOMP < +10 µA

–

mmho

Output Impedance

–

2.5

–

Ω

Open Loop DC Gain

Note 3.

–

Unity Gain Bandwidth

0.01

µF COMP Capacitor

–

400

–

kHz

PSRR @ 1.0 kHz

–

COMP Max Voltage

VFB = 1.65 V COMP Open;

DAC = 00000

2.4

2.7

–

COMP Min Voltage

VFB = 1.8 V COMP Open;

DAC = 00000

–

0.1

0.2

Hiccup Latch Discharge Current

–

5.0

µA

PWM Comparators

Minimum Pulse Width

Measured from CSx to GATE(H),

V(VFB) = V(CSREF) = 0 V,

V(COMP) = 0.5 V, 60 mV step

applied between VCSX and VCREF

–

350

515

Channel Startup Offset

V(CS1) = V(CS2) = V(CS3) =

V(VFB) = V(CSREF) = 0 V;

Measure V(COMP) when

GATE1(H), 2(H), 3(H) switch high

0.3

0.4

0.5

GATE(H) and GATE(L)

High Voltage (AC)

Note 3. Measure VCCLX – GATE(L)

or VCCHX – GATE(H)

–

1.0

Low Voltage (AC)

Note 3. Measure GATE(L)

or GATE(H)

–

0.5

Rise Time GATE(H)x

1.0 V < GATE < 8.0 V; VCCHX = 10 V

–

Rise Time GATE(L)x

1.0 V < GATE < 8.0 V; VCCLX = 10 V

–

Fall Time GATE(H)x

8.0 V > GATE > 1.0 V; VCCHX = 10 V

–

Fall Time GATE(L)x

8.0 V > GATE > 1.0 V; VCCLX = 10 V

–

GATE(H) to GATE(L) Delay

GATE(H) < 2.0 V, GATE(L) > 2.0 V

110

GATE(L) to GATE(H) Delay

GATE(L) < 2.0 V, GATE(H) > 2.0 V

110

GATE Pull–down

Force 100

µA into GATE Driver

with VCCHX = VCCLX = 2.0 V

–

1.2

1.6

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

3. Guaranteed by design. Not tested in production.

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