ISL6522 Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

ISL6522

Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

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	Technical Documentation		Tools And Support
	Pricing / Samples		Related Devices

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	ISL6522CRZ
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	ISL6522EVAL1
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	ISL6522CBZ	Details
	ISL6522CBZ-T	Details
	ISL6522CBZA	Details
	ISL6522CBZA-T	Details
	ISL6522CRZ	Details
	ISL6522CRZ-T	Details
	ISL6522CVZ	Details
	ISL6522CVZ-T	Details
	ISL6522EVAL1	Details
	ISL6522IBZ	Details
	ISL6522IBZ-T	Details
	ISL6522IRZ	Details
	ISL6522IRZ-T	Details
	ISL6522IRZ-TK	Details
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Datasheet
	ISL6522
	Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

V_IN (min) (V)

2.5

V_IN (max) (V)

V_OUT (min) (V)

V_OUT (max) (V)

V_IN

I_OUT (max) (A)

V_BIAS (V)

I_S (min) (mA)

I_S (typ) (mA)

Product Information

Key Features

Drives two N-Channel MOSFETs
Operates from +5V or +12V input
Simple single-loop control design
- Voltage-mode PWM control
Fast transient response
- High-bandwidth error amplifier
- Full 0–100% duty ratio
Excellent output voltage regulation
- 0.8V internal reference
- ±1% over line voltage and temperature
Overcurrent fault monitor
- Does not require extra current sensing element
- Uses MOSFETs r_DS(ON)
Converter can source and sink current
Small converter size
- Constant frequency operation
- 200kHz free-running oscillator programmable from 50kHz to over 1MHz
14-lead SOIC and TSSOP package and 16-lead 5x5mm QFN Package
QFN Package
- Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads-Product Outline.
- Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile
Pb-Free Available (RoHS Compliant)

Description

The ISL6522 provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous rectified buck topology. The ISL6522 integrates all of the control, output adjustment, monitoring and protection functions into a single package.

The output voltage of the converter can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1% over temperature and line voltage variations.

The ISL6522 provides simple, single feedback loop, voltagemode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0–100%.

The ISL6522 protects against overcurrent conditions by inhibiting PWM operation. The ISL6522 monitors the current by using the r_DS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor.

Pricing / Packaging / Samples / Ordering

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Check distributor inventory	Available in RoHS/Pb-Free

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

	ISL6522CBZ	Active	Comm	14 Ld SOIC	3	1.26

	ISL6522CBZ-T	Active	Comm	14 Ld SOIC T+R	3	1.31

	ISL6522CBZA	Active	Comm	14 Ld SOIC	3	1.26

	ISL6522CBZA-T	Active	Comm	14 Ld SOIC T+R	3	1.26

	ISL6522CRZ	Active	Comm	16 Ld QFN	3	1.29

	ISL6522CRZ-T	Active	Comm	16 Ld QFN T+R	3	1.29

	ISL6522CVZ	Active	Comm	14 Ld TSSOP	1	1.33

	ISL6522CVZ-T	Active	Comm	14 Ld TSSOP T+R	1	1.38

	ISL6522EVAL1	Active	-	Eval Board	N/A	Contact Us

	ISL6522IBZ	Active	Ind	14 Ld SOIC	3	1.44

	ISL6522IBZ-T	Active	Ind	14 Ld SOIC T+R	3	1.49

	ISL6522IRZ	Active	Ind	16 Ld QFN	3	1.40

	ISL6522IRZ-T	Active	Ind	16 Ld QFN T+R	3	1.44

	ISL6522IRZ-TK	Active	Ind	16 Ld QFN T+R	3	1.44

	ISL6522IVZ	Active	Ind	14 Ld TSSOP	1	1.87

	ISL6522IVZ-T	Active	Ind	14 Ld TSSOP T+R	1	1.93

	ISK6522CR	InActive	-			N/A

	ISL6522CB	InActive	Comm	14 Ld SOIC	1	N/A

	ISL6522CB-T	InActive	Comm	14 Ld SOIC T+R	1	N/A

	ISL6522CR	InActive	Comm	16 Ld QFN	1	N/A

	ISL6522CR-T	InActive	Comm	16 Ld QFN T+R	1	N/A

	ISL6522CV	InActive	Comm	14 Ld TSSOP	1	N/A

	ISL6522CV-T	InActive	Comm	14 Ld TSSOP T+R	1	N/A

	ISL6522IB	InActive	Ind	14 Ld SOIC	1	N/A

	ISL6522IB-T	InActive	Ind	14 Ld SOIC T+R	1	N/A

	ISL6522IR	InActive	Ind	16 Ld QFN	1	N/A

	ISL6522IR-T	InActive	Ind	16 Ld QFN T+R	1	N/A

	ISL6522IV	InActive	Ind	14 Ld TSSOP	1	N/A

	ISL6522IV-T	InActive	Ind	14 Ld TSSOP 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):
Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller
Technical Brief(s):
Designing Stable Compensation Networks for Single Phase Voltage Mode Buck Regulators

Tools And Support
iSim Design Simulation
No Models Available

Application Block Diagrams

Applications

Power supply for Pentium®, Pentium Pro, PowerPC® and AlphaPC™ microprocessors
High-power 5V to 3.xV DC-DC regulators
Low-voltage distributed power supplies

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