Datasheet > ISL78302A

ISL78302A

更新时间： 2024-11-24 00:59:23

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
12页	616K
描述
Dual LDO with Low Noise, Very High PSRR and Low IQ

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ISL78302A 数据手册

DATASHEET

ISL78302A

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

FN7932

Rev 2.00

December 22, 2015

ISL78302A 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 200mΩ.

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 at 1kHz

at 100µA (1.5V)

RMS

• Extremely Low Quiescent Current: 47µA (Both LDOs Active)

• Wide Input Voltage Capability: 2.3V to 6.5V

The quiescent current is typically only 47µA with both LDOs

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 0.3µA.

• Low Dropout Voltage: Typically 230mV at 300mA

• Stable with 1µF to 10µF Ceramic Capacitors

• Separate Enable and POR Pins for Each LDO

The ISL78302A is AEC-Q100 qualified. The ISL78302A is rated

for the automotive temperature range (-40°C to +105°C).

• 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 +105°C Operating Temperature Range

• Pb-free (RoHS Compliant)

• AEC-Q100 Qualified

Applications

• Radio Receivers

• Camera Modules

• GPS/Navigation

• Infotainment Systems

ISL78302A

VIN (2.3 TO 6.5V)

ENABLE1

VIN

VO1

VO2

OUT1

EN1

OUT2

OFF

ENABLE2

OFF

EN2

POR2

POR1

RESET2

(200ms DELAY,

C3 = 0.01µF)

TOO LOW

OUT2

CBYP

OUT1

CPOR

GND

RESET1

(2ms DELAY)

TOO LOW

OUT1

C1, C4, C5: 1µF X5R CERAMIC CAPACITOR

C2: 0.1µF X7R CERAMIC CAPACITOR

C3: 0.01µF X7R CERAMIC CAPACITOR

FIGURE 1. TYPICAL APPLICATION

FN7932 Rev 2.00

December 22, 2015

Page 1 of 12

12 3 4 5 6 7...12

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与ISL78302A相关器件

型号	品牌	获取价格	描述	数据表
ISL78302AARBJZ	INTERSIL	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARBJZ	RENESAS	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARBJZ-T7A	RENESAS	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARGCZ	RENESAS	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ; DFN10; Temp Range: -40° to 105
ISL78302AARGCZ	INTERSIL	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARJCZ	INTERSIL	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARJCZ	RENESAS	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARJMZ	INTERSIL	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARJMZ	RENESAS	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302AARJRZ	INTERSIL	获取价格	Dual LDO with Low Noise, Very High PSRR and Low IQ

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