Datasheet > ISL9000A

ISL9000A

更新时间： 2023-12-20 18:44:50

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
14页	721K
描述
Dual LDO with Low Noise, Very High PSRR, and Low IQ

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ISL9000A 数据手册

DATASHEET

ISL9000A

FN6391

Rev 3.00

October 15, 2015

Dual LDO with Low Noise, Very High PSRR and Low IQ

ISL9000A is a high performance dual LDO capable of sourcing

300mA current from each output. It has a low standby current

and very high PSRR and is stable with output capacitance of

1µF to 10µF with ESR of up to 200m.

Features

• Integrates two 300mA high performance LDOs

• Excellent transient response to large current steps

• ±1.8% accuracy over all operating conditions

The device integrates an individual Power-On-Reset (POR)

function for each output. The POR delay for VO2 can be

externally programmed by connecting a timing capacitor to the

CPOR pin. The POR delay for VO1 is internally fixed at

approximately 2ms. A reference bypass pin is also provided for

connecting a noise filtering capacitor for low noise and high-

PSRR applications.

• Excellent load regulation: < 0.1% voltage change across full

range of load current

• Low output noise: typically 30µV

• Very high PSRR: 90dB @ 1kHz

@ 100µA (1.5V)

RMS

• Extremely low quiescent current: 42µA (both LDOs active)

• Wide input voltage capability: 2.3V to 6.5V

The quiescent current is typically only 42µA with both LDO’s

enabled and active. Separate enable pins control each

individual LDO output. When both enable pins are low, the

device is in shutdown, typically drawing less than 0.1µA.

• Low dropout voltage: typically 200mV @ 300mA

• Stable with 1µF to 10µF ceramic capacitors

• Separate enable and POR pins for each LDO

Several combinations of voltage outputs are standard. Output

voltage options for each LDO range from 1.5V to 3.3V. Other

output voltage options may be available upon request.

• Soft-start and staged turn-on to limit input current surge

during enable

• Current limit and overheat protection

• Tiny 10 Ld 3mmx3mm DFN package

• -40°C to +85°C operating temperature range

• Pb-free (RoHS compliant)

Applications

• PDAs, Cell Phones and Smart Phones

• Portable Instruments, MP3 Players

• Handheld Devices including Medical Handheld

ISL9000A

VIN (2.3 TO 6.5V)

VO1

VIN

VO1

VO2

EN1

VO2

ENABLE1

ENABLE2

VO2 OK

VO2 TOO LOW

OFF

EN2

POR2

POR1

RESET2

(200ms DELAY,

C3 = 0.01µF)

CBYP

OUT1

CPOR

GND

RESET1

(2ms DELAY)

VO1 TOO LOW

C1, C4, C5: 1µF X5R CERAMIC CAPACITOR

C2: 0.1µF X7R CERAMIC CAPACITOR

C3: 0.01µF X7R CERAMIC CAPACITOR

FIGURE 1. TYPICAL APPLICATION

FN6391 Rev 3.00

October 15, 2015

Page 1 of 14

12 3 4 5 6 7...14

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