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参数资料
| 型号： | DC1367A |
| 厂商： | Linear Technology |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTM4615 |
| 软件下载： | LTM4615 |
| 设计资源： | DC1367A Design Files DC1367A Schematic |
| 标准包装： | 1 |
| 系列： | LTM®, uModule® |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 3，非隔离 |
| 输出电压： | 1.8V，1.2V，1V |
| 电流 - 输出： | 4A，2.5A，1.5A |
| 输入电压： | 2.5 ~ 5.5 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 1.25MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | LTM4615 |
| 相关产品： | LTM4615EV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA LTM4615IV#PBF-ND - IC SWIT REG BUCK 4A ADJ 144LGA |
LTM4615
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal
operating temperature range (Note 2), otherwise specifications are at T A = 25°C, V IN = 5V, LDO_IN = 1.2V unless otherwise noted.
Per Typical Application Figure 12.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VLDO Section
V LDO_IN
I IN(LDO_IN)
I IN(SHDN)
Operating Voltage
Operating Current
Shutdown Current
(Note 3)
I OUT = 0mA, V OUT = 1V, EN3 = 1.2V
EN3 = 0V, LDO_IN = 1.5V
l
1.14
1
0.6
3.5
20
V
mA
μA
V BOOST3
BOOST3 Output Voltage
EN3 = 1.2V
4.8
5
5.2
V
V BOOST3(UVLO)
Undervoltage Lockout
4.3
V
V FB3
FB3 Internal Reference Voltage
1mA ≤ I OUT ≤ 1.5A, 1.14V ≤ V LDO_IN ≤ 3.5V,
BOOST3 = 5V, 1V ≤ V OUT ≤ 2.59V
l
0.397
0.395
0.4
0.4
0.404
0.405
V
V
V LDO_OUT
Output Voltage Range
0.4
2.6
V
V DO
LDO_RHI
Dropout Voltage
LDO Top Feedback Resistor
V LDO_IN = 1.5V, V FB3 = 0.38V, I OUT = 1.5A (Note 4)
4.96
100
4.99
250
5.02
mV
k?
I OUT
I LIM
e n
V IH_EN3
Output Current
Output Current Limit
Output Voltage Noise
EN3 Input High Voltage
V EN3 = 1.2V
(Note 5)
Frequency = 10Hz to 1MHz, I LOAD = 1A
1.14V ≤ V LDO_IN ≤ 3.5V
l
l
1.5
1
2.5
300
A
A
μRMS
V
V IL_EN3
I IN_EN3
EN3 Input Low Voltage
EN3 Input Current
1.14V ≤ V LDO_IN ≤ 3.5V
–1
0.4
1
V
μA
V OL_PGOOD3
PGOOD Low Voltage
I PGOOD3 = 2mA
0.1
0.4
V
PGOOD Threshold
Output Threshold
Relative to V FB3
PGOOD3 High to Low
PGOOD3 Low to High
–14
–4
–12
–3
–10
–2
%
%
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.
Note 2: The LTM4615 is tested under pulsed load conditions such that
T J ≈ T A . The LTM4615E is guaranteed to meet performance specifications
over the 0°C to 125°C internal operating temperature range. Specifications
over the –40°C to 125°C internal operating temperature range are assured
by design, characterization and correlation with statistical process
controls. The LTM4615I is guaranteed to meet specifications over the full
internal operating temperature range. Note that the maximum ambient
temperature is determined by specific operating conditions in conjunction
with board layout, the rated package thermal resistance and other
environmental factors.
Note 3: Minimum operating voltage required for regulation is:
V IN ≥ V OUT(MIN) + V DROPOUT
Note 4: Dropout voltage is the minimum input to output differential needed
to maintain regulation at a specified output current. In dropout the output
voltage will be equal to V IN – V DROPOUT .
Note 5: The LTM4615 has overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperatures will exceed 125°C when overtemperature is activated.
Continuous overtemperature activation can impair long-term reliability.
Note 6: See output current derating curves for different V IN , V OUT and T A .
4
For more information www.linear.com/LTM4615
4615fb
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