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LTM4643

更新时间： 2024-02-21 20:50:16
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
24页 1814K
描述
20VIN, Dual 5A or Single 10A Step-Down DC/DC μModule Regulator

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中文翻译

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LTM4643 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：BGA包装说明：BGA-77
针数：77Reach Compliance Code：compliant
风险等级：2.28Base Number Matches：1

LTM4643 数据手册

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LTM4705  
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating  
temperature range (Note 2), otherwise specifications are at TA = 25°C (Note 2), VIN1 = VIN2 = 12V, unless otherwise noted per the  
typical application shown in Figure 23.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
A
I
I
Input Supply Current  
V
IN1  
V
IN1  
V
OUT  
= V = 12V, V  
= 1.5V, I = 5A  
OUT  
0.74  
S(VIN)  
IN2  
OUT  
l
l
Output Continuous Current Range  
Line Regulation Accuracy  
= V = 12V, V  
= 1.5V (Note 3)  
0
5
A
OUT(DC)  
IN2  
OUT  
ΔV  
OUT  
/
= 1.5V, V = V = 3.1V to 20V, I = 0A  
OUT  
0.01  
0.2  
8
0.1  
ꢀ/V  
OUT(Line)  
IN1  
IN2  
V
l
ΔV  
OUT  
/
Load Regulation Accuracy  
Output Ripple Voltage  
Turn-On Overshoot  
V
= 1.5V, I  
= 0A to 5A  
0.8  
ꢀ
mV  
mV  
ms  
mV  
µs  
OUT(Load)  
OUT  
OUT  
OUT  
V
V
I
= 0A, C  
= 100µF Ceramic, V = V = 12V, V  
IN1 IN2  
OUT(AC)  
OUT  
OUT  
= 1.5V  
ΔV  
OUT(START)  
I
= 0A, C  
= 100µF Ceramic, V = V = 12V, V  
15  
5
OUT  
OUT  
IN1  
IN2  
OUT  
= 1.5V  
= 100µF Ceramic, No Load, TRACK/SS = 0.01µF, V  
IN  
t
Turn-On Time  
C
OUT  
= 12V, V  
START  
= 1.5V  
OUT  
ΔV  
Peak Deviation for Dynamic Load  
Load: 0ꢀ to 25ꢀ to 0ꢀ of Full Load, C  
= 100µF  
= 100µF  
30  
70  
OUTLS  
OUT  
OUT  
Ceramic, V = 12V, V  
= 1.5V  
IN  
OUT  
t
Settling Time for Dynamic Load Step Load: 0ꢀ to 25ꢀ to 0ꢀ of Full Load, C  
Ceramic, V = 12V, V = 1.5V  
SETTLE  
IN  
OUT  
I
Output Current Limit  
Voltage at V Pin  
V
= 12V, V  
= 1.5V  
6
A
V
OUTPK  
IN  
OUT  
OUT  
l
V
I
= 0A, V  
= 1.5V  
0.592  
0.6  
0.608  
30  
FB  
FB  
OUT  
I
Current at V Pin  
(Note 4)  
nA  
kΩ  
FB  
FB  
R
Resistor Between V  
and V Pins  
60  
60.4  
60.8  
2.6  
FBHI  
OUT  
FB  
UVLO  
V
Undervoltage Lockout  
V
Falling  
2.2  
2.4  
0.5  
V
V
IN  
IN  
Hysteresis  
I
t
t
t
Track Pin Soft-Start Pull-Up Current TRACK/SS = 0V  
1.4  
1000  
30  
µA  
µs  
ns  
ns  
TRACK/SS  
ss  
Internal Soft-Start Time  
Minimum On-Time  
Minimum Off-Time  
PGOOD Trip Level  
10ꢀ to 90ꢀ Rise Time (Note 4)  
(Note 4)  
(Note 4)  
ON(MIN)  
OFF(MIN)  
100  
V
V
FB  
with Respect to Set Output  
FB  
FB  
PGOOD  
V
V
Ramping Negative  
Ramping Positive  
–10  
3.1  
–8  
8
–5  
10  
ꢀ
ꢀ
R
PGOOD Pull-Down Resistance  
10mA Load  
= V = 3.6V to 20V  
25  
3.3  
1.3  
Ω
V
PGOOD  
INTVCC  
INTVCC  
V
Internal V Voltage  
V
3.5  
CC  
IN1  
IN2  
V
INTV Load Regulation  
I
= 0mA to 50mA  
CC  
ꢀ
CC  
Load Reg  
FREQ  
Default Switching Frequency  
1
MHz  
V
SYNC/MODE High Threshold  
SYNC/MODE Low Threshold  
MODE V  
MODE V  
1
V
V
SYNC/MODE  
IH  
IL  
0.3  
I
SYNC/MODE Input Current  
MODE = 0V  
MODE = INTV  
1.5  
–1.5  
µA  
µA  
MODE  
CC  
Note 1: Stresses beyond those listed under Absolute Maximum Ratings  
may cause permanent damage to the device. Exposure to any Absolute  
Maximum Rating condition for extended periods may affect device  
reliability and lifetime.  
ambient temperature consistent with these specifications is determined by  
specific operating conditions in conjunction with board layout, the rated  
package thermal resistance and other environmental factors.  
Note 3: See output current derating curves for different V , V  
and T .  
A
IN OUT  
Note 2: The LTM4705 is tested under pulsed load conditions such that T ≈  
J
Note 4: 100ꢀ tested at wafer level.  
T . The LTM4705E is guaranteed to meet performance specifications over  
A
Note 5: This IC includes overtemperature protection that is intended  
to protect the device during momentary overload conditions. Junction  
temperature will exceed 125°C when overtemperature protection is active.  
Continuous operation above the specified maximum operating junction  
temperature may impair device reliability.  
the 0°C to 125°C internal operating temperature range. Specifications over  
the full –40°C to 125°C internal operating temperature range are assured  
by design, characterization and correlation with statistical process controls.  
The LTM4705I is guaranteed to meet specifications over the full –40°C  
to 125°C internal operating temperature range. Note that the maximum  
Rev. 0  
3
For more information www.analog.com  
1234567...24

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