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参数资料
| 型号： | LTM4618IV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC DC-DC UMODULE BUCK 6A 84-LGA |
| 产品培训模块： | LTM4618 Step-Down µModule® Regulator Power Module vs. Discrete DC to DC |
| 软件下载： | LTM4618 Spice Model |
| 产品目录绘图： | LTM Series_15x15x4.3 |
| 设计资源： | LTM4618IV#PBF Footprint.bxl |
| 特色产品： | LTM?4618 μModule? Regulator μModule Products |
| 标准包装： | 170 |
| 系列： | µModule® |
| 类型： | 非隔离（POL） |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 4.5V |
| 电压 - 输入（最大）： | 26.5V |
| Voltage - Output 1： | 0.8 ~ 5 V |
| 电流 - 输出（最大）： | 6A |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 84-LGA |
| 尺寸/尺寸： | 0.59" L x 0.35" W x 0.17" H（15.0mm x 9.0mm x 4.3mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 2711 (CN2011-ZH PDF) |
| 配用： | DC1472A-ND - BOARD DEMO LTM4618 |
LTM4618
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full internal
operating temperature range, otherwise speci?cations are at T A = 25°C (Note 2), V IN = 12V, per typical application in Figure 21.
SYMBOL
I Q(VIN)
PARAMETER
Input Supply Bias Current
CONDITIONS
V IN = 12V, V OUT = 2.5V, I OUT = 0A
MIN
TYP
26
MAX
UNITS
mA
V IN = 26.5V, V OUT = 2.5V, I OUT = 0A
Shutdown, RUN = 0, V IN = 26.5V
20
80
mA
μA
I S(VIN)
Input Supply Current
V IN = 12V, V OUT = 2.5V, I OUT = 6A
V IN = 26.5V, V OUT = 2.5V, I OUT = 6A
1.430
0.675
A
A
INTV CC
Internal V CC Voltage
V IN = 12V, V RUN > 2V, No Load
4.8
5
5.2
V
V EXTVCC
VLDO External
EXTV CC Switchover Voltage
EXTV CC Voltage Drop
EXTV CC Ramping Positive
INTV CC = 20mA, V EXTVCC = 5V
l
4.5
4.7
50
100
V
mV
V EXTVCC Hysteresis
EXTV CC Hysteresis
200
mV
Output Speci?cations
I OUT(DC)
Output Continuous Current Range
V IN = 12V, V OUT = 2.5V (Note 4)
0
6
A
Δ V OUT(LINE)
V OUT
Δ V OUT(LOAD)
Line Regulation Accuracy
Load Regulation Accuracy
V OUT = 2.5V, V IN from 6V to 26.5V
I OUT = 0A
V IN = 12V, V OUT = 2.5V, 0 to 6A (Note 4)
l
l
0.02
0.3
0.04
0.6
%/V
%
V OUT
V OUT(AC)
Output Ripple Voltage
I OUT = 0A, C OUT = 100μF × 3 X5R Ceramic
V IN = 12V, V OUT = 2.5V
V IN = 26.5V, V OUT = 2.5V
10
12
mV
mV
f S
Δ V OUT(START)
Output Ripple Voltage Frequency
Turn-On Overshoot
I OUT = 2A, V IN = 12V, V OUT = 2.5V, V FREQ = INTV CC
C OUT = 100μF × 3 X5R Ceramic
780
kHz
V OUT = 2.5V, I OUT = 0A
V IN = 12V
V IN = 26.5V
20
20
mV
mV
t START
Turn-On Time
C OUT = 100μF × 3 X5R Ceramic,
V OUT = 2.5V, I OUT = 0A, TK/SS Capacitor = 0.01μF
V IN = 12V
V IN = 26.5V
0.75
0.70
ms
ms
Δ V OUTLS
Peak Deviation for Dynamic Load
Load: 0% to 50% of Full Load
C OUT = 100μF × 3 X5R Ceramic, V OUT = 2.5V
V IN = 12V
15
mV
t SETTLE
Settling Time for Dynamic Load Step
Load: 0% to 50% of Full Load
C OUT = 100μF × 3 X5R Ceramic, V OUT = 2.5V
V IN = 12V
10
μs
I OUT(PK)
Output Current Limit
C OUT = 100μF × 3 X5R Ceramic
Control Section
V IN = 6V, V OUT = 2.5V
V IN = 26.5V, V OUT = 2.5V
11
11
A
A
V FB
I FB
V OVL
I TK/SS
Error Ampli?er Feedback Voltage
Error Ampli?er Feedback Current
Feedback Voltage Lockout
Soft-Start Charge Current
I OUT = 0A, V OUT = 2.5V
(Note 3)
Measured at V FB
V TK/SS = 0V
l
0.792
0.788
0.84
0.9
0.8
0.8
–10
0.86
1.3
0.808
0.808
–50
0.88
1.7
V
V
nA
V
μA
DF MAX
t ON(MIN)
Maximum Duty Factor
Minimum On-Time
In Dropout (Note 3)
(Note 3)
97
90
%
ns
f NOM
f LOW
Nominal Frequency
Lowest Frequency
V FREQ = 1.2V
V FREQ = 0V
450
210
500
250
550
290
kHz
kHz
4618fa
3
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