SC9301 datasheet(4/29 Pages) SEMTECH

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SC9301

Electrical Characteristics (continued)

Parameter

Conditions

Min

Typ

Max

Units

Input Supplies (continued)

VDD Supply Current

ENL , EN = 0V

μA

VDD =5V, f

= 270kHz, EN = VDD, no load(2)

7.7

VDD =3.3V, f

= 280kHz, EN = VDD, no load(2)

5.1

FB Comparator Threshold

Static V

and load, T

= 0 to +125 °C

0.595

0.600

0.605

Static V

and load, T

= -40 to +125 °C

0.594

0.600

0.606

Frequency Range

1000

kHz

Bootstrap Switch Resistance

Timing

On-Time

= 15V, V

OUT

= 3V, R

TON

= 300kΩ, VDD = 5V

1395

1600

1805

Minimum On-Time (2)

Minimum Off-Time(2)

VDD =5V

250

VDD =3.3V

370

Soft-Start

Soft-Start Charge Current

3.0

μA

Soft-Start Voltage(2)

When V

OUT

reaches regulation

1.5

Analog Inputs/Outputs

VOUT Input Resistance

500

kΩ

Power Good

Power Good Threshold

Upper limit, V

> internal 600mV reference

+20

Lower limit, V

< internal 600mV reference

-10

Power Good Hysteresis

1.2

Start-Up Delay Time(2)

(between PWM enable and PGOOD high)

VDD = 5V, C

= 3.3nF

3.8

VDD = 3.3V, C

= 3.3nF

2.6

Fault (noise immunity) Delay Time(2)

5μs

Leakage

PGOOD = high impedance (open)

μA

Power Good On Resistance

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