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LT8610ABIMSE-5#PBF

更新时间： 2024-09-19 15:43:55
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
26页 376K
描述
LT8610A/LT8610AB - 42V, 3.5A Synchronous Step-Down Regulator with 2.5µA Quiescent Current; Package: MSOP; Pins: 16; Temperature Range: -40°C to 85°C

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LT8610ABIMSE-5#PBF 技术参数

是否Rohs认证：符合生命周期：Active
零件包装代码：MSOP包装说明：MSOP-16
针数：16Reach Compliance Code：compliant
风险等级：2.19Is Samacsys：N
Base Number Matches：1

LT8610ABIMSE-5#PBF 数据手册

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LT8610A/LT8610AB Series  
42V, 3.5A Synchronous  
Step-Down Regulator with  
2.5µA Quiescent Current  
FEATURES  
DESCRIPTION  
n
LT8610 Feature Set, Plus:  
The LT®8610A/LT8610AB series are compact, high ef-  
ficiency, high speed synchronous monolithic step-down  
switching regulators that consume only 2.5µA of quies-  
cent current. Compared to the LT8610, they have higher  
maximum output currents of 3.5A and a faster minimum  
switch-on time of 30ns. The LT8610A has the same low  
ripple burst mode performance of the LT8610, while the  
LT8610AB has even higher light load efficiency.  
3.5A Maximum Output Current  
Fast 30ns Minimum Switch-On Time  
Improved Burst Mode Efficiency (LT8610AB Only)  
Improved EMI  
n
Wide Input Voltage Range: 3.4V to 42V  
Ultralow Quiescent Current Burst Mode® Operation:  
n
2.5μA I Regulating 12V to 3.3V  
Q
IN  
OUT  
n
n
n
Fixed Output Voltages: 3.3V, 5V  
The other features of the LT8610 remain unchanged in the  
LT8610A/LT8610ABseries.ASYNCpinallowssynchroni-  
zation to an external clock. The EN/UV pin has an accurate  
Output Ripple < 10mV (LT8610A Only)  
P-P  
High Efficiency Synchronous Operation:  
95% Efficiency at 1A, 5V  
93% Efficiency at 1A, 3.3V  
from 12V  
from 12V  
IN  
OUT  
IN  
1V threshold for V undervoltage lockout or shut down.  
IN  
OUT  
A capacitor on the TR/SS pin programs the output voltage  
n
n
n
Low Dropout Under All Conditions: 200mV at 1A  
Safely Tolerates Inductor Saturation in Overload  
Adjustable and Synchronizable Frequency:  
200kHz to 2.2MHz  
Accurate 1V Enable Pin Threshold  
Output Soft-Start and Tracking  
Small Thermally Enhanced 16-Lead MSOP Package  
ramp rate during startup. The PG flag signals when V  
OUT  
is within ±±9 of the programmed output voltage as well  
as fault conditions.  
n
n
n
OUTPUT  
CURRENT  
MINIMUM  
ON TIME  
1mA LOAD  
EFFICIENCY**  
LT8610*  
LT8610A  
LT8610AB  
2.5A  
3.5A  
3.5A  
50ns  
30ns  
30ns  
829  
829  
±19  
APPLICATIONS  
*See LT8610 data sheet. **V = 12V, V  
= 3.3V, L = 4.7µH  
IN  
OUT  
n
Automotive and Industrial Supplies  
GSM Power Supplies  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
n
TYPICAL APPLICATION  
LT8610AB Efficiency at 5VOUT  
5V 3.5A Step-Down Converter  
100  
V
IN  
V
BST  
IN  
5.5V TO 42V  
90  
80  
70  
60  
50  
0.1µF  
4.7µH  
4.7µF  
EN/UV  
V
OUT  
LT8610AB-5  
5V  
SW  
PG  
47µF  
×2  
3.5A  
SYNC  
BIAS  
10nF  
TR/SS  
V
OUT  
1µF  
INTV  
CC  
RT  
GND  
V
V
V
= 12V  
= 24V  
= 36V  
IN  
IN  
IN  
40  
30  
60.4k  
= 700kHz  
0.1  
1
10  
100  
1000  
f
SW  
8610ab TA01a  
LOAD CURRENT (mA)  
8610ab TA01b  
8610abfa  
1
For more information www.linear.com/LT8610A  
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