ISL6526, ISL6526A

FN9055 Rev 12.00

Page 7 of 18

Sep 30, 2015

Functional Pin Descriptions

14 LD SOIC

TOP VIEW

16 LD 5X5 QFN

TOP VIEW

VCC

This pin provides the bias supply for the ISL6526, ISL6526A.

Connect a well-decoupled 3.3V supply to this pin.

COMP and FB

COMP and FB are the available external pins of the error

amplifier. The FB pin is the inverting input of the internal

error amplifier and the COMP pin is the error amplifier

output. These pins are used to compensate the voltage

control feedback loop of the converter.

GND

This pin represents the signal and power ground for the IC.

Tie this pin to the ground island/plane through the lowest

impedance connection available.

PHASE

Connect this pin to the upper MOSFET’s source. This pin is

used to monitor the voltage drop across the upper MOSFET

for overcurrent protection.

UGATE

Connect this pin to the upper MOSFET’s gate. This pin

provides the PWM-controlled gate drive for the upper

MOSFET. This pin is also monitored by the adaptive

shoot-through protection circuitry to determine when the

upper MOSFET has turned off.

BOOT

This pin provides ground referenced bias voltage to the

upper MOSFET driver. A bootstrap circuit is used to create a

voltage suitable to drive a logic-level N-Channel MOSFET.

LGATE

Connect this pin to the lower MOSFET’s gate. This pin provides

the PWM-controlled gate drive for the lower MOSFET. This pin

is also monitored by the adaptive shoot-through protection

circuitry to determine when the lower MOSFET has turned off.

GATE DRIVERS

Upper Gate Source Current

-

-1

-

A

Upper Gate Sink Current

-1-

A

Lower Gate Source Current

-

-1

-

A

Lower Gate Sink Current

-2-

A

PROTECTION/DISABLE

OCSET Current Source

Commercial

182022

µA

Industrial

16

20

22

µA

Disable Threshold

--

0.8

V

NOTE:

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

8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization

and are not production tested.

Electrical Specifications

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 8)

TYP

MAX

(Note 8)

UNITS

12

14

13

4

3

2

1

LGATE

CPVOUT

UGATE

PHASE

VCC

BOOT

GND

CT1

11

7

6

5

9

8

10

CT2

OCSET

FB

CPGND

ENABLE

COMP

1

3

4

15

CPVOUT

CT1

CT2

OCSET

16

14

13

2

12

10

9

11

6

57

8

PHASE

VCC

CPGND

NC