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ISL78302ARWCZ PDF预览

ISL78302ARWCZ

更新时间： 2024-11-30 00:57:43
品牌 Logo 应用领域
英特矽尔 - INTERSIL /
页数 文件大小 规格书
13页 541K
描述
Dual LDO with Low Noise, High Performance and Low IQ

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ISL78302ARWCZ 数据手册

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DATASHEET  
Dual LDO with Low Noise, High Performance and Low I  
Q
ISL78302  
ISL78302 is a high performance dual LDO capable of sourcing  
300mA current from each output. It has a low standby current  
and is stable with an output capacitance of 1µF to 10µF and an  
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  
• Excellent load regulation: <0.1% voltage change across full  
range of load current  
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.  
• Extremely low quiescent current: 47µA (both LDOs active)  
• Wide input voltage capability: 2.3V to 6.5V  
• Low dropout voltage: typically 300mV at 300mA  
• Low output noise: typically 37µV  
at 100µA (1.5V)  
RMS  
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 0.5µA.  
• Stable with 1µF to 10µF ceramic capacitors  
• Separate enable and POR pins for each LDO  
• Soft-start and staged turn-on to limit input current surge during  
enable  
The part operates down to 2.3V and up to 6.5V input. The typical  
output voltage can be as low as 1.2V and as high as 3.3V for  
each regulator. Please refer to the “Ordering Information” on  
page 3 for standard options.  
• Current limit and over-temperature protection  
• Tiny 10 Lead 3mm x 3mm DFN package  
• AEC-Q100 qualified  
The ISL78302 is AEC-Q100 qualified at the automotive  
temperature range of -40°C to +105°C.  
• Pb-free (RoHS Compliant)  
Applications  
• Radio receivers  
• Camera modules  
• GPS/navigation  
• Infotainment systems  
ISL78302  
10  
1
VIN (2.3 TO 6.5V)  
V
VIN  
VO1  
OUT1  
ON  
ON  
9
2
EN1  
VO2  
V
ENABLE1  
ENABLE2  
OUT2  
V
OK  
OUT2  
OFF  
OFF  
8
7
3
4
EN2  
POR2  
POR1  
RESET2  
(200ms DELAY,  
C3 = 0.01µF)  
V
V
TOO LOW  
OUT2  
V
CBYP  
OK  
OUT1  
6
5
CPOR  
GND  
RESET1  
(2ms DELAY)  
TOO LOW  
C1  
C2  
C3  
C4  
C5  
OUT1  
C1, C4, C5: 1µF X5R CERAMIC CAPACITOR  
C2: 0.01µF X7R CERAMIC CAPACITOR  
C3: 0.01µF X7R CERAMIC CAPACITOR  
FIGURE 1. TYPICAL APPLICATION  
November 6, 2014  
FN7696.6  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2011-2014. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners.  
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