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參數資料
| 型號： | LTC3700EMS#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數： | 3/16頁 |
| 文件大小： | 215K |
| 描述： | IC REG DL BUCK/LINEAR 10MSOP |
| 產品培訓模塊： | More Information on LDOs |
| 標準包裝： | 2,500 |
| 拓撲： | 降壓（降壓）（1），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數： | 2 |
| 頻率 - 開關： | 550kHz |
| 電壓/電流 - 輸出 1： | 可調至0.8V，5A |
| 電壓/電流 - 輸出 2： | 可調至0.8V，150mA |
| 帶 LED 驅動器： | 無 |
| 帶監(jiān)控器： | 無 |
| 帶序列發(fā)生器： | 無 |
| 電源電壓： | 2.4 V ~ 9.8 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
3
LTC3700
3700f
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3700 is guaranteed to meet specifications from0?/SPAN>Cto
70癈. Specifications over the 40癈 to 85癈 operating temperature range
are assured by design, characterization and correlation with statistical
process controls.
Note 3: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
T
J
= T
A
+ (P
D
" ?/DIV>
JA
癈/W)
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: The LTC3700 is tested in a feedback loop that servos V
FB
to the
output of the error amplifier.
Note 6: Peak current sense voltage is reduced dependent on duty cycle to
a percentage of value as given in Figure 2.
Note 7: Guaranteed by design; not tested in production.
Note 8: PGOOD values are expressed as a percentage difference from the
respective Regulated Feedback Voltage as given in the table.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
ELECTRICAL CHARACTERISTICS
The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T
A
= 25?/SPAN>C. V
IN
= V
IN2
= 4.2V unless otherwise specified. (Note 2)
LDO Regulator
V
IN2
Input Voltage
2.4
6
V
Input DC Supply Current
Typicals at V
IN2
= 4.2V
Normal Operation with Buck Enabled
2.4V d V
IN2
d 6V
50 100
礎
Normal Operation with Buck Undervoltage
2.4V d V
IN2
d 6V
100 150
礎
Shutdown with Buck Enabled
2.4V d V
IN2
d 6V, V
ITH/RUN
= 0V
0
1
礎
Shutdown with Buck Undervoltage
2.4V d V
IN2
d 6V, V
ITH/RUN
= 0V
8 24
礎
Regulated Feedback Voltage
0癈 d T
A
d 70癈, I
LDO
= 1mA
q 0.780 0.800 0.830
V
40癈 d T
A
d 85癈, I
LDO
= 1mA
q 0.765 0.800 0.835
V
Output Voltage Line Regulation
(Unity-Gain Feedback)
With Buck Enabled
2.65V d V
IN
d 9.8V
0.05
mV/V
With Buck Enabled
2.4V d V
IN2
d 6V, I
LDO
= 1mA
4
mV/V
With Buck Undervoltage
2.4V d V
IN2
d 6V, I
LDO
= 1mA
4
mV/V
Output Voltage Load Regulation
1mA d I
LOAD
d 150mA
0.06 0.12 mV/mA
V
FB2
Input Current
0 10
nA
LDO Short-Circuit Current
V
LDO
= 0V
150 200
mA
LDO Dropout
V
IN2
= 3.3V, I
LDO
= 150mA
270
mV
V
IN2
= 6V, I
LDO
= 150mA
170
mV
Overtemperature Trip Point
(Note 7)
150
癈
Overtemperature Hysteresis
(Note 7)
5
癈
PGOOD
Feedback Voltage PGOOD Threshold
(Note 8)
PGOOD High-to-Low
V
FB
or V
FB2
Falling
12 7.5
%
V
FB
or V
FB2
Rising
7.5 12
%
PGOOD Low-to-High
V
FB
or V
FB2
Rising
10 5.0
%
V
FB
or V
FB2
Falling
5.0 10
%
PGOOD On-Resistance
V
ITH/RUN
= 0V, V
IN
= V
IN2
= 4.2V, V
PGOOD
= 100mV
135 180
&
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