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LM26003-Q1

更新时间： 2024-11-24 01:01:23
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LM26003-xx 3-A Switching Regulator With High Efficiency Sleep Mode

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LM26003-Q1 数据手册

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LM26003, LM26003-Q1  
SNVS576F –AUGUST 2008–REVISED FEBRUARY 2015  
LM26003-xx 3-A Switching Regulator With High Efficiency Sleep Mode  
1 Features  
3 Description  
The LM26003 is a switching regulator designed for  
the high-efficiency requirements of applications with  
standby modes. The device features a low-current  
sleep mode to maintain efficiency under light-load  
conditions and current-mode control for accurate  
regulation over a wide input voltage range. Quiescent  
current is reduced to 10.8 µA typically in shutdown  
mode and less than 40 µA in sleep mode. Forced  
PWM mode is also available to disable sleep mode.  
1
•
LM26003-Q1 is an Automotive-Grade Product  
That is AEC-Q100 Grade 1 Qualified (–40°C to  
+125°C Operating Junction Temperature)  
•
•
•
•
•
•
•
•
•
•
•
•
•
•
High-Efficiency Sleep Mode  
40-µA Typical Iq in Sleep Mode  
10.8-µA Typical Iq in Shutdown Mode  
3.0-V Minimum Input Voltage  
4.0-V to 38-V Continuous Input Range  
1.5% Reference Accuracy  
The LM26003 device can deliver up to 3 A of  
continuous load current with a fixed current limit,  
through the internal N-channel switch. The part has a  
wide input voltage range of 4.0 V to 38 V and can  
operate with input voltages as low as 3 V during line  
transients.  
Cycle-by-Cycle Current Limit  
Adjustable Frequency (150 kHz to 500 kHz)  
Synchronizable to an External Clock  
Power Good Flag  
Operating frequency is adjustable from 150 kHz to  
Forced PWM Function  
500 kHz with  
a single resistor and can be  
Adjustable Soft-Start  
synchronized to an external clock.  
20-Pin HTSSOP Package  
Other features include Power Good, adjustable soft-  
start, enable pin, input undervoltage protection, and  
an internal bootstrap diode for reduced component  
count.  
Thermal Shut Down  
2 Applications  
•
•
•
•
•
Automotive Telematics  
Navigation Systems  
Device Information(1)  
PART NUMBER  
LM26003  
PACKAGE  
BODY SIZE (NOM)  
In-Dash Instrumentation  
Battery-Powered Applications  
HTSSOP (20)  
6.50 mm x 4.40 mm  
LM26003-Q1  
Standby Power for Home Gateways and Set-Top  
Boxes  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
4 Typical Application Circuit  
VIN  
15  
1
2
VBIAS  
VIN  
VIN  
20  
19  
SW  
SW  
C9  
L1  
VOUT  
3
4
VIN  
18  
17  
9
AVIN  
+
SW  
BOOT  
FB  
D1  
C6  
C7  
R1  
PGOOD  
R4  
5
6
PGOOD  
EN  
LM26003  
EN  
14  
8
VDD  
SYNC  
SS  
COMP  
VDD  
7
16  
11  
SYNC  
C5  
R2  
12  
FREQ  
FPWM  
PGND  
AGND  
C1  
C3  
R3  
13  
10  
R6  
R5  
EP  
21  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
 
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LM26003-Q1 替代型号

型号 品牌 替代类型 描述 数据表
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