ISL6844 Improved Industry-Standard Single-Ended PWM Controller

ISL6844

Improved Industry-Standard Single-Ended PWM Controller

	Features Description		iSim Design Simulation
	Technical Documentation		Tools And Support
	Pricing / Samples		Related Devices

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Datasheet
	ISL6844
	Improved Industry Standard Single-Ended Current Mode PWM Controller

Control Mode

Peak Current Mode

UVLO Rising (V)

14.4

UVLO Falling (V)

8.8

V_BIAS (max) (V)

No-Load Operating Current (mA)

2.3

# of PWM Outputs

FET Driver I_OUT (max) (A)

Max Duty Cycle (%)

Product Information

Key Features

1A MOSFET gate driver
60μA start-up current, 100μA maximum
25ns propagation delay current sense to output
Fast transient response with peak current mode control
Adjustable switching frequency to 2MHz
20ns rise and fall times with 1nF output load
Trimmed timing capacitor discharge current for accurate deadtime/maximum duty cycle control
High bandwidth error amplifier
Tight tolerance voltage reference over line, load, and temperature
Tight tolerance current limit threshold
Pb-free available (RoHS Compliant)

Description

The ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845 family of adjustable frequency, low power, pulse width modulating (PWM) current mode controllers is designed for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Peak current mode control effectively handles power transients and provides inherent overcurrent protection.

This advanced BiCMOS design is pin compatible with the industry standard 384x family of controllers and offers significantly improved performance. Features include low operating current, 60μA start-up current, adjustable operating frequency to 2MHz, and high peak current drive capability with 20ns rise and fall times.

Pricing / Packaging / Samples / Ordering

iBuy direct from Intersil	iBuy direct - out of stock	Request samples
Check distributor inventory	Available in RoHS/Pb-Free

	Part No.	Design-In Status	Temp.	Package	MSL	Price US $

	ISL6844EVAL1Z	Active		Eval Board	N/A	Contact Us

	ISL6844EVAL2	Active		Eval Board	N/A	Contact Us

	ISL6844IBZ	Active	Ind	8 Ld SOIC	1	1.13

	ISL6844IBZ-T	Active	Ind	8 Ld SOIC T+R	1	1.13

	ISL6844IRZ-T	Active	Ind	8 Ld DFN T+R	1	1.38

	ISL6844IUZ	Active	Ind	8 Ld MSOP	2	1.27

	ISL6844IUZ-T	Active	Ind	8 Ld MSOP T+R	2	1.27

	ISL6844EVAL2Z	Coming Soon		Eval Board	N/A	Contact Us

	ISL6844EVAL1	InActive		Eval Board	N/A	N/A

	ISL6844IB	InActive	Ind	8 Ld SOIC	1	N/A

	ISL6844IB-T	InActive	Ind	8 Ld SOIC T+R	1	N/A

	ISL6844IU	InActive	Ind	8 Ld MSOP	1	N/A

	ISL6844IU-T	InActive	Ind	8 Ld MSOP T+R	1	N/A

The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing

Technical Documentation

Datasheet(s):
Improved Industry Standard Single-Ended Current Mode PWM Controller 改善的业界标准单端电流模式PWM 控制器改善的業界標准單端電流模式PWM 控制器
Evaluation Board(s):
Intersil PoE Evaluation Board

Tools And Support
iSim Design Simulation
Getting Started with iSim and iSim:PE Single Output CCM Flyback Converter for POE

Application Block Diagrams

Applications

Telecom and Datacom Power
Wireless Base Station Power
File Server Power
Industrial Power Systems
PC Power Supplies
Isolated Buck and Flyback Regulators
Boost Regulators

Related Devices

Parametric Table

	ISL6401		Synchronizing Current Mode PWM for Subscriber Line Interface Circuits (SLICs)
	ISL6721		Flexible Single Ended Current Mode PWM Controller
	ISL6722A		Flexible Single Ended Current Mode PWM Controllers
	ISL6723A		Flexible Single Ended Current Mode PWM Controllers
	ISL6840		Improved Industry-Standard Single-Ended PWM Controller
	ISL6841		Improved Industry-Standard Single-Ended PWM Controller
	ISL6842		Improved Industry-Standard Single-Ended PWM Controller
	ISL6843		Improved Industry-Standard Single-Ended PWM Controller
	ISL6845		Improved Industry-Standard Single-Ended PWM Controller
	ISL8840A		High Performance Industry Standard Single-Ended Current Mode PWM Controller
	ISL8841A		High Performance Industry Standard Single-Ended Current Mode PWM Controller
	ISL8842A		High Performance Industry Standard Single-Ended Current Mode PWM Controller
	ISL8843		High Performance Industry Standard Single-Ended Current Mode PWM Controller
	ISL8843A		Single-Ended Current Mode PWM Controller with 3% Current Limit and Military Temp Grade Option
	ISL8844A		High Performance Industry Standard Single-Ended Current Mode PWM Controller
	ISL8845A		High Performance Industry Standard Single-Ended Current Mode PWM Controller