ISL6721 datasheet(9/23 Pages) RENESAS

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ISL6721

FN9110 Rev 9.00

Page 9 of 23

May 20, 2016

Undervoltage Hysteresis Voltage

100

UV Bias Current

VUV = 2.00V

-1.0

1.0

µA

OV Bias Current

VOV = 2.00V

-1.0

1.0

µA

THERMAL PROTECTION

Thermal Shutdown

(Note 8)

120

130

140

°C

Thermal Shutdown Clear

(Note 8)

105

120

135

°C

Hysteresis

(Note 8)-

°C

NOTES:

6. Specifications at -40°C and +105°C are guaranteed by +25°C test with margin limits.

7. This is the VCC current consumed when the device is active but not switching. Does not include gate drive current.

8. Limits should be considered typical and are not production tested.

9. This is the maximum duty cycle achievable using the specified values of RT and CT. Larger or smaller maximum duty cycles may be obtained using

other values for RT and CT. See Equations 1, 2, 3 and 4.

Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram” on page 3

and “Typical Boost Converter Application Schematic” on page 5. 9V < VCC = VC < 20V, RT = 11kΩ, Ct = 330 pF, TA = -40°C to +105°C (Note 6), Typical

values are at TA = +25°C.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Typical Performance Curves

FIGURE 4. EA REFERENCE VOLTAGE vs TEMPERATURE

FIGURE 5. VREF REFERENCE VOLTAGE vs TEMPERATURE

FIGURE 6. OSCILLATOR FREQUENCY vs TEMPERATURE

FIGURE 7. RESISTANCE FOR CT CAPACITOR VALUES GIVEN

0.991

0.993

0.995

0.998

1.002

TEMPERATURE (°C)

-40

-10

110

1.002

1.000

0.998

0.995

0.993

0.991

0.993

0.995

0.998

1.002

1.000

0.998

0.995

0.993

0.991

-10

110

-40

TEMPERATURE (°C)

1.002

0.996

0.989

0.983

0.976

0.970

-10

205080

110

-40

TEMPERATURE (°C)

10 20

40 50 60 70 80 90 100

100

103

RT (k)

100pF

220pF

330pF

470pF

680pF

1000pF

2000pF

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