Datasheet > ISL6534CRZ-T

ISL6534CRZ-T

更新时间： 2024-11-29 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		开关
页数	文件大小	规格书
26页	609K
描述
Dual PWM with Linear

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ISL6534CRZ-T 数据手册

ISL6534

Data Sheet

December 21, 2004

FN9134.1

Dual PWM with Linear

Features

The ISL6534 is a versatile triple regulator that has two

independent synchronous-rectified buck controllers with

integrated 12V gate drivers (OUT1 and OUT2) and a linear

controller (OUT3) to offer precision regulation of up to three

voltage rails. An optional shunt regulator allows 12V only

operation, when a 5V supply is not available.

• Two Synchronous-Rectified Buck Controllers

- Voltage Mode control

- VIN range up to 12V

- VOUT range from 0.6V to 6V

- 12V LGATE drivers; up to 12V Boot Strap for UGATE

• Switcher References

Each controller has independent soft-start and enable

functions combined on a single pin. A capacitor from each

SS/EN pin to ground sets the soft-start time, and pulling

SS/EN below 1.0V disables the controller. The SS/EN pins

can be controlled independently or they can be ganged

together to provide complete control of start-up coordination.

The PGOOD function indicates when all regulators have

completed their soft start and provides an indication of short-

circuit conditions on either switching regulator.

- 0.6V Reference for OUT1 (0.8% Accurate)

- 3.3V Reference Output for OUT2 (0.8% Accurate)

- External Reference Input for OUT2

- Buffered VTT Reference Output

• Switcher clocking

- Phase options for Optimal Clock Relationship

- Resistor-Selectable Switching Frequency (300kHz

default; Resistor to Ground for 300kHz to 1MHz range)

- Synchronization-Capable Switching Frequency

(Connect FS_SYNC to Separate Regulator)

There are two ways to control the switching frequency of the

PWM regulators. The default switching frequency is 300kHz

(FS_SYNC pin open). A resistor from FS_SYNC to ground

increases the switching frequency (up to 1MHz). Connecting

the gate signal from another PWM IC synchronizes the

ISL6534 switchers to the frequency of the other controller.

This allows independent regulators operating at a common

frequency to avoid low-frequency beats. The gate drivers for

DDR mode can be staggered by 90° in order to minimize

cross-conduction.

• Single Linear Controller

- Drives N-Channel MOSFET

- 0.6V Reference (0.8% Accurate)

- VIN range up to 12V

- VOUT range from 0.6V to 6V

• 12V and 5V supplies required (but optional shunt regulator

can generate VCC = 5.8V from 12V)

• Three Independent Soft-Start/Enable Pins

- Gang Together or Control Independently

Switcher OUT1 has an internal 0.8% accurate reference for

regulating any voltage down to 0.6V. OUT2 has current

sinking capability and an external reference input allowing

convenient connection to OUT1 through a resistor divider for

DDRAM applications. The 3.3V reference pin provides the

option for independent regulation of OUT2. The linear

controller drives an external N-Channel MOSFET, making

the ISL6534 one of the most versatile regulators available.

• PGOOD Output Indicates All Outputs Available

• Thermally Enhanced QFN or TSSOP Package

• QFN Package:

- Compliant to JEDEC PUB95 MO-220

QFN - Quad Flat No Leads - Package Outline

- Near Chip Scale Package footprint, which improves

PCB efficiency and has a thinner profile

Simplified Block Diagram

• Pb-Free Available (RoHS Compliant)

SS1/EN1

COMP1

FB1

BOOT1

UGATE1

LGATE1

OUT1

PWM CONTROLLER

SS2/EN2

REFIN

FB2

BOOT2

UGATE2

LGATE2

OUT2

PWM CONTROLLER

COMP2

REFOUT

VREF

3.3V

PGOOD

FS/SYNC

DRIVE3

SS3/EN3

FB3

OUT3

LINEAR CONTROLLER

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

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ISL6534CRZ-T 替代型号

型号	品牌	替代类型	描述	数据表
ISL6534CRZ	INTERSIL	完全替代	Dual PWM with Linear
ISL6534CR	INTERSIL	类似代替	Dual PWM with Linear

与ISL6534CRZ-T相关器件

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ISL6534CVZ-T	INTERSIL	获取价格	Dual PWM with Linear
ISL6535	INTERSIL	获取价格	Synchronous Buck Pulse-Width Modulator (PWM) Controller
ISL6535CBZ	INTERSIL	获取价格	Synchronous Buck Pulse-Width Modulator (PWM) Controller
ISL6535CBZ	RENESAS	获取价格	Synchronous Buck Pulse-Width Modulator (PWM) Controller; QFN16, SOIC14; Temp Range: See Da
ISL6535CBZ-T13	RENESAS	获取价格	SWITCHING CONTROLLER
ISL6535CBZ-T7	RENESAS	获取价格	SWITCHING CONTROLLER
ISL6535CRZ	INTERSIL	获取价格	Synchronous Buck Pulse-Width Modulator (PWM) Controller

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