ISL6406IB 查看數據表（PDF） - Intersil

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ISL6406IB

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Intersil 

ISL6406, ISL6426

Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application

Schematic. VCC = +3.3V. Typical values are at TA = 25°C. (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Sync. Frequency Range (Note 6)

1.1 Times the natural switching

frequency.

110

-

770

kHz

Minimum Sync Pulse Width (Note 6)

-

40

100

ns

PWM Maximum Duty Cycle

-

96

-

%

GATE DRIVER OUTPUT (Note 6)

Upper Gate Source Current

Upper Gate Sink Current

VBOOT - VPHASE = 5V, VUGATE = 4V

-

-1

-

A

-

1

-

A

Lower Gate Source Current

Lower Gate Sink Current

VVCC = 3.3V, VLGATE = 4V

-

-1

-

A

-

2

-

A

SOFT-START

Soft-Start Slew Rate

f = 300kHz, TA = 0°C to 70°C

6.2

f = 300kHz, TA = -40°C to +85°C

6.2

Internal Digital Circuit Clock Count

-

(Soft-start time varies with frequency)

6.7

6.7

2048

7.3

ms

7.6

ms

-

Clk Cycles

OVERCURRENT

OCSET Current Source

TA = 0°C to 70°C

TA = -40°C to +85°C

NOTES:

5. This is the VCC current consumed when the device is active but not switching.

6. Guaranteed by design.

18

20

22

µA

16

20

23

µA

Typical Performance Curve

0.81

0.805

0.8

0.795

0.79

0.785

0.78

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

TEMPERATURE (°C)

FIGURE 1. REFERENCE VOLTAGE vs TEMPERATURE

6

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