ISL6225 datasheet(3/19 Pages) INTERSIL

Part #	ISL6225

Description	Dual Mobile-Friendly PWM Controller with DDR Memory Option

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Manufacturer	INTERSIL [Intersil Corporation]

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FN9049.7

December 28, 2004

Absolute Maximum Ratings

Thermal Information

Bias Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V

Input Voltage, VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +27.0V

PHASE, UGATE Voltage . . . . . . . . . . . . . . GND-5V (Note 3) to 33V

BOOT, ISEN Voltage . . . . . . . . . . . . . . . . . . . . GND-0.3V to +33.0V

BOOT with respect to PHASE . . . . . . . . . . . . . . . . . . . . . . . . .+ 6.5V

All Other Pins . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to VCC + 0.3V

ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2

Recommended Operating Conditions

Bias Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V ±5%

Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.0V to +24.0V

Ambient Temperature Range . . . . . . . . . . . . . . . . . . . .-10°C to 85°C

Junction Temperature Range. . . . . . . . . . . . . . . . . . .-10°C to 125°C

Thermal Resistance (Typical, Note 4)

θJA (°C/W)

SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .

78

Maximum Junction Temperature (Plastic Package) . . . . . . . . 150°C

Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C

(SSOP - Lead Tips Only)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

3. 200ns transient.

4.

θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

Electrical Specifications

Recommended Operating Conditions, Unless Otherwise Noted.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

VCC SUPPLY

Bias Current

ICC

LGATEx, UGATEx Open, VSENx forced above

regulation point, DDR = 0, VIN > 5V

-2.2

3.2

mA

Shut-down Current

ICCSN

--

30

µA

VCC UVLO

Rising VCC Threshold

VCCU

4.3

4.65

4.75

V

Falling VCC Threshold

VCCD

4.1

4.35

4.45

V

VIN

Input Voltage Pin Current (Sink)

IVIN

10

-

30

µA

Input Voltage Pin Current (Source)

IVINO

--15

-30

µA

Shut-down Current

IVINS

--

1

µA

OSCILLATOR

PWM1 Oscillator Frequency

FC

255

300

345

kHz

Ramp Amplitude, pk-pk

VR1

VIN = 16V, by design

-

2

-

V

Ramp Amplitude, pk-pk

VR2

VIN = 5V, by design

-

1.25

-

V

Ramp Offset

VROFF

By design

-

0.5

-

V

Ramp/VIN Gain

GRB1

VIN ≥ 3V, by design

-

125

-

mV/V

Ramp/VIN Gain

GRB2

1

≤ VIN ≤ 3V, by design

-

250

-

mV/V

REFERENCE AND SOFT-START

Internal Reference Voltage

VREF

-0.9

-

V

Reference Voltage Accuracy

-1.0

-

+1.0

%

Soft-Start Current During Start-up

ISOFT

--5

-

µA

Soft-Start Complete Threshold

VST

By design

-

1.5

-

V

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