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LMK316BJ476ML-T PDF预览

LMK316BJ476ML-T

更新时间: 2024-01-17 12:06:35
品牌 Logo 应用领域
凌特 - Linear 稳压器电容器PC
页数 文件大小 规格书
64页 822K
描述
38V, 10A DC/DC μModule Regulator with Advanced Input and Load Protection

LMK316BJ476ML-T 数据手册

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LTM4641  
38V, 10A DC/DC µModule  
Regulator with Advanced  
Input and Load Protection  
DESCRIPTION  
The LTM®4641 is a switch mode step-down DC/DC  
µModule® (micromodule) regulator with advanced input  
and load protection features. Trip detection thresholds for  
the following faults are customizable: input undervoltage,  
overtemperature, input overvoltage and output overvolt-  
age. Select fault conditions can be set for latchoff or  
hysteretic restart response—or disabled. Included in the  
package are the switching controller and housekeeping  
ICs,powerMOSFETs,inductor,overvoltagedrivers,biasing  
circuitryandsupportingcomponents.Operatingfrominput  
voltages of 4V to 38V (4.5V start-up), the device supports  
output voltages from 0.6V to 6V, set by an external resis-  
tor network remote sensing the point-of-load’s voltage.  
FEATURES  
n
Wide Operating Input Voltage Range: 4.5V to 38V  
n
10A DC Typical, 12A Peak Output Current  
n
Output Range: 0.6V to 6V  
n
1.5ꢀ ꢁaꢂiꢃuꢃ Total Output DC Voltage Error  
n
DifferentialReꢃoteSenseAꢃplifierforPOLRegulation  
n
Internal Teꢃperature, Analog Indicator Output  
n
OvercurrentFoldbackandOverteꢃperatureProtection  
n
Current ꢁode Control/Fast Transient Response  
n
Parallelable for Higher Output Current  
n
Selectable Pulse-Skipping Operation  
n
Soft-Start/Voltage Tracking/Pre-Bias Start-Up  
n
15mm × 15mm × 5.01mm BGA Package  
Input Protection  
n
UVLO, Overvoltage Shutdown and Latchoff Thresholds  
The LTM4641’s high efficiency design can deliver up to  
10A continuous current with a few input and output ca-  
pacitors. The regulator’s constant on-time current mode  
controlarchitectureenableshighstep-downratiosandfast  
responsetotransientlineandloadchanges. TheLTM4641  
is offered in a 15mm × 15mm × 5.01mm RoHS compliant  
BGA package with Pb-free finish.  
n
N-Channel Overvoltage Power-Interrupt MOSFET Driver  
n
Surge Stopper Capable with Few External Components  
Load Protection  
n
Robust, Resettable Latchoff Overvoltage Protection  
N-Channel Overvoltage Crowbar Power MOSFET Driver  
n
APPLICATIONS  
L, LT, LTC, LTM, µModule, Burst Mode, Linear Technology and the Linear logo are registered  
trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other  
trademarks are the property of their respective owners. Protected by U.S. Patents including  
5481178, 5847554, 6100678, 6304066, 6580258, 6677210.  
n
Ruggedized Electronics  
Avionics and Industrial Equipment  
n
TYPICAL APPLICATION  
µꢁodule Regulator with Input Disconnect and Fast Crowbar Output Overvoltage Protection  
4
1V Load Protected froꢃ ꢁTOP  
Short-Circuit at 38VIN  
V
MSP*  
IN  
4V TO 38V  
4.5V START-UP  
+
3
10µF  
50V  
×2  
100µF  
50V  
SHORT-CIRCUIT APPLIED  
1
V
V
V
V
SW  
V
M
ING INGP INH  
OUT  
TOP  
4
1V  
V
2
INL  
OUT  
10A  
V
, V (25V/DIV)  
INL INH  
100µF  
3
2
×3  
750k  
CROWBAR (5V/DIV)  
MCB**  
CROWBAR  
M
BOT  
f
1.1V  
OUT  
PEAK  
SET  
5.49k  
5.49k  
+
UVLO  
INTV  
V
V
OSNS  
LTM4641  
CC  
LOAD  
DRV  
CC  
V
OUT  
(200mV/DIV)  
OSNS  
RUN  
GND  
OV  
4641 TA01a  
1
TRACK/SS  
PGM  
5.6M  
10nF  
IOVRETRY OVLO FCB LATCH SGND  
4641 TA01b  
4µs/DIV  
TESTED AT WORST-CASE CONDITION: NO LOAD  
SGND CONNECTS TO GND INTERNAL TO µMODULE REGULATOR  
*
**  
MSP: (OPTIONAL) SERIES-PASS OVERVOLTAGE POWER INTERRUPT MOSFET, NXP PSMN014-60LS  
MCB: (OPTIONAL) OUTPUT OVERVOLTAGE CROWBAR MOSFET, NXP PH2625L  
4641f  
1

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