ISL6528CBZ-T datasheet(4/13 Pages) INTERSIL

Part #	ISL6528CBZ-T

Description	Dual Regulator - Standard Buck PWM and Linear Power Controller

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Manufacturer	INTERSIL [Intersil Corporation]

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4 / 13 page

4

FN9038.4

March 9, 2006

Absolute Maximum Ratings

Thermal Information

UGATE, BOOT. . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to +10V

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to +7V

FB, DRIVE2, FB2, COMP, . . . . . . . . . . . GND -0.3V to VCC +0.3V

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

Operating Conditions

Supply Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%

Supply Voltage to drain of upper MOSFET . . . . . . . . . +3.3V ±10%

Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C

Junction Temperature Range. . . . . . . . . . . . . . . . . . . . 0°C to 125°C

Thermal Resistance (Typical, Note 1)

θJA (°C/W)

SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .

110

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

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

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

(SOIC - 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.

NOTE:

1.

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. Refer to Block and Simplified Power System

Diagrams, and Typical Application Schematic

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

VCC SUPPLY CURRENT

Nominal Supply Current

ICC

UGATE and DRIVE2 Open

2

3.7

6.5

mA

POWER-ON RESET

Rising VCC Threshold

4.25

4.4

4.50

V

Falling VCC Threshold

3.75

3.8

4.00

V

OSCILLATOR AND SOFT-START

Free Running Frequency

FOSC

550

600

650

kHz

Ramp Amplitude

∆VOSC

-1.5

-

VP-P

Soft-Start Interval

TSS

3.10

3.42

3.75

ms

REFERENCE VOLTAGE

Reference Voltage

VREF

.784

0.800

.816

V

System Accuracy

-2.00

-

+2.00

%

PWM CONTROLLER ERROR AMPLIFIER

DC Gain

-80-

dB

Gain-Bandwidth Product

GBWP

-

15

-

MHz

Slew Rate

SR

-

6

-

V/

µs

Undervoltage Level (VFB/VREF)VUV

48.13

52.5

56.88

%

PWM CONTROLLER GATE DRIVER

UGATE Source Impedance

RUGATE

VCC = 5V, VUGATE = 2.5V

-

2.75

5.0

Ω

UGATE Sink Impedance

RUGATE

VUGATE-PHASE = 2.5V

-

3.0

5.0

Ω

LINEAR REGULATOR ERROR AMPLIFIER

Output Drive Current

VCC > 4.5V

100

120

-

mA

Overvoltage Level (VFB2/VREF)VOV

150.0

160.0

175.0

%

Undervoltage Level (VFB2/VREF)VUV

48.13

52.5

56.88

%

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