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ISL78302

更新时间： 2024-09-27 11:57:11
品牌 Logo 应用领域
英特矽尔 - INTERSIL /
页数 文件大小 规格书
11页 596K
描述
Dual LDO with Low Noise, High Performance and Low IQ

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ISL78302 数据手册

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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 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  
• 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 @ 300mA  
• Low Output Noise: Typically 37µV  
RMS  
@ 100µA (1.5V)  
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 0.5µA.  
• 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 section  
for standard options. Other voltage selections are available upon  
request.  
• Current Limit and Over-temperature Protection  
• Tiny 10 Lead 3mm x 3mm DFN Package  
• TS16949 Compliant  
• AEC - Q100 Tested  
The ISL78302 is both AEC - Q100 rated and fully TS16949  
compliant. The ISL78302 is rated for the automotive  
temperature range (-40°C to +105°C).  
• Pb-free (RoHS Compliant)  
Applications  
• Radio Receivers  
• Camera Modules  
• GPS/Navigation  
• Infotainment Systems  
Typical Application  
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  
January 28, 2011  
FN7696.0  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. 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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