ISL1904

8

FN8286.1

September 20, 2012

15

PWMOUT The PWM gate drive output for LED dimming. The output level is clamped to ~12V for VDD greater than 12V. PWMOUT has pull-

down capability when UVLO is active or when the IC is not biased. This output is used to drive the dimming FET in series with the

LED string. The PWM operates at ~ 320Hz.

16

OUT

The gate drive output for the external power FET. OUT is capable of sourcing and sinking 1A @ VDD = 8V. The output level is clamped

to ~12V for VDD greater than 12V. OUT has pull-down capability when UVLO is active or when the IC is not biased.

PIN #

SYMBOL

DESCRIPTION

Ordering Information

PART NUMBER

(Notes 1, 2, 3)

PART

MARKING

TEMP. RANGE

(°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

ISL1904FAZ

1904 FAZ

-40 to +125

16 Ld QSOP

M16.15A

ISL1904EVAL2Z

Evaluation Board

1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte

tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil

Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), please see device information page for ISL1904. For more information on MSL please see tech brief TB363.

Related Products

PART NUMBER

KEY DIFFERENTIATORS

ISL1901

Isolated and non-isolated single-stage flyback regulator.

ISL1902

Isolated and non-isolated single-stage flyback regulator with inrush control and interface features for temperature and

ambient light sensors.

ISL1903

Non-isolated single-stage buck regulator using switch current for regulation.

ISL1904

Isolated single-stage flyback regulator with primary side current sense regulation.

ISL1907

Non-isolated two-stage cascaded boost PFC + buck regulator eliminates dependency on electrolytic capacitors.

ISL1908

Isolated two-stage cascaded boost PFC + flyback regulator eliminates dependency on electrolytic capacitors.