Datasheet > ISL8002

ISL8002

更新时间： 2024-12-01 02:57:35

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
23页	1828K
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Compact Synchronous Buck Regulators

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ISL8002 数据手册

DATASHEET

ISL8002, ISL8002A, ISL80019, ISL80019A

Compact Synchronous Buck Regulators

FN7888

Rev 4.00

July 31, 2014

The ISL8002, ISL8002A, ISL80019 and ISL80019A are highly

efficient, monolithic, synchronous step-down DC/DC converters

that can deliver up to 2A of continuous output current from a 2.7V

to 5.5V input supply. They use peak current mode control

architecture to allow very low duty cycle operation. They operate

at either 1MHz or 2MHz switching frequency, thereby providing

superior transient response and allowing for the use of small

inductors. They also have excellent stability and provide both

internal and external compensation options.

Features

• V range 2.7V to 5.5V

• V

range is 0.6V to V

OUT

maximum is 1.5A or 2A (see Table 1 on page 3)

• I

OUT

• Switching frequency is 1MHz or 2MHz (see Table 1 on page 3)

• Internal or external compensation option

• Selectable PFM or PWM operation option

• Overcurrent and short circuit protection

The ISL8002, ISL8002A, ISL80019 and ISL80019A integrate

very low r

MOSFETs in order to maximize efficiency. In

DS(ON)

addition, since the high-side MOSFET is a PMOS, the need for a

Boot capacitor is eliminated, thereby reducing external

component count. They can operate at 100% duty cycle (at 1MHz)

with a dropout of 200mV at 2A output current.

• Over-temperature/thermal protection

• V Undervoltage Lockout and V

Overvoltage Protection

OUT

• Up to 95% peak efficiency

These devices can be configured for either PFM (discontinuous

conduction) or PWM (continuous conduction) operation at light

load. PFM provides high efficiency by reducing switching losses at

light loads and PWM reduces noise susceptibility and RF

interference.

Applications

• General purpose point of load DC/DC

• Set-top boxes and cable modems

• FPGA power

These devices are offered in a space saving 8 pin 2mmx2mm

TDFN lead free package with exposed pad for improved thermal

performance. The complete converter occupies less than

• DVD, HDD drives, LCD panels, TV

Related Literature

• See AN1803, “1.5A/2A Low Quiescent Current High

Efficiency Synchronous Buck Regulator”

0.10in area.

ISL8002

100

1.2μH

+1.8V/2A

+2.7V …+5.5V

VIN

PHASE

PGND

VOUT

GND

VIN

22μF

GND

200k 1%

+0.6V

MODE

100k 1%

2.5V

1.8V

1.5V

1.2V

0.9V

0.8V

OUT

COMP

PAD

(EQ. 1)







-----------

= R

– 1

0.0 0.2

0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

OUTPUT LOAD (A)



VFB

FIGURE 1. TYPICAL APPLICATION CIRCUIT CONFIGURATION

(INTERNAL COMPENSATION OPTION)

FIGURE 2. EFFICIENCY vs LOAD

= 1MHz, V = 3.3V, MODE = PFM, T = +25°C

FN7888 Rev 4.00

July 31, 2014

Page 1 of 23

12 3 4 5 6 7...23

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与ISL8002相关器件

型号	品牌	获取价格	描述	数据表
ISL8002_13	INTERSIL	获取价格	Compact Synchronous Buck Regulators
ISL80020	INTERSIL	获取价格	Negative current protection
ISL80020	RENESAS	获取价格	Compact Synchronous Buck Converter
ISL80020A	INTERSIL	获取价格	Negative current protection
ISL80020A	RENESAS	获取价格	Compact Synchronous Buck Converter
ISL80020AFRZ-T	INTERSIL	获取价格	Negative current protection
ISL80020AFRZ-T7A	INTERSIL	获取价格	Negative current protection
ISL80020AIRZ-T	INTERSIL	获取价格	Negative current protection
ISL80020AIRZ-T7A	INTERSIL	获取价格	Negative current protection
ISL80020FRZ-T	INTERSIL	获取价格	Negative current protection

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