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参数资料
| 型号： | LTC3703EGN-5#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/32页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM VM 16-SSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 96% |
| 电源电压： | 4.1 V ~ 15 V |
| 降压： | 是 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
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LTC3703-5
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V CC = DRV CC = V BOOST = V IN = 5V, V MODE/SYNC = V INV = V SW =
BGRTN = 0V, RUN/SS = I MAX = open, R SET = 25k, unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loop
V FB
Feedback Voltage
(Note 4)
●
0.792
0.788
0.800
0.808
0.812
V
V
? V FB, LINE
? V FB, LOAD
V MODE/SYNC
Feedback Voltage Line Regulation
Feedback Voltage Load Regulation
MODE/SYNC Threshold
5V < V CC < 15V (Note 4)
1V < V COMP < 2V (Note 4)
MODE/SYNC Rising
●
●
0.75
0.007
0.01
0.8
0.05
0.1
0.87
%/V
%
V
? V MODE/SYNC
MODE/SYNC Hysteresis
20
mV
I MODE/SYNC
V INV
I INV
I VIN
MODE/SYNC Current
Invert Threshold
Invert Current
V IN Sense Input Current
0 ≤ V MODE/SYNC ≤ 15V
0 ≤ V INV ≤ 15V
V IN = 60V
RUN/SS = 0V, V IN = 10V
1
0
1.5
0
80
0
1
2
1
130
1
μ A
V
μ A
μ A
μ A
I MAX
V OS, IMAX
V RUN/SS
I RUN/SS
I MAX Source Current
V IMAX Offset Voltage
Shutdown Threshold
RUN/SS Source Current
Maximum RUN/SS Sink Current
V IMAX = 0V
|V SW | – V IMAX at I RUN/SS = 0 μ A
RUN/SS = 0V
|V SW | – V IMAX > 100mV
10.5
– 25
0.7
2.3
9
12
10
0.9
3.8
17
13.5
55
1.2
5.3
25
μ A
mV
V
μ A
μ A
V UV
Undervoltage Lockout
V CC Rising
V CC Falling
Hysteresis
●
●
●
3.4
2.8
0.45
3.7
3.1
0.65
4.1
3.4
0.85
V
V
V
Oscillator
f OSC
f SYNC
Oscillator Frequency
External Sync Frequency Range
R SET = 25k ?
270
100
300
330
600
kHz
kHz
t ON, MIN
Minimum On-Time
200
ns
DC MAX
Maximum Duty Cycle
f < 200kHz
89
93
96
%
Driver
I BG, PEAK
BG Driver Peak Source Current
0.75
1
A
R BG, SINK
I TG, PEAK
R TG, SINK
BG Driver Pull-Down R DS, ON
TG Driver Peak Source Current
TG Driver Pull-Down R DS, ON
(Note 8)
(Note 8)
0.75
1.2
1
1.2
1.8
1.8
?
A
?
Feedback Amplifier
A VOL
f U
Op Amp DC Open Loop Gain (Note 4)
Op Amp Unity Gain Crossover Frequency (Note 6)
74
85
25
dB
MHz
I FB
FB Input Current 0 ≤ V FB ≤ 3V
0
1
μ A
I COMP
COMP Sink/Source Current
± 5
± 10
mA
Note 1 : Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2 : The LTC3703-5 is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 85 ° C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC3703I-5 is guaranteed over the full
–40 ° C to 125 ° C operating junction temperature range.
Note 3: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC3703-5: T J = T A + (P D ? 100 ° C/W) G Package
Note 4 : The LTC3703-5 is tested in a feedback loop that servos V FB to the
reference voltage with the COMP pin forced to a voltage between 1V and 2V.
Note 5: The dynamic input supply current is higher due to the power
MOSFET gate charging being delivered at the switching frequency
(Q G ? f OSC ).
Note 6 : Guaranteed by design. Not subject to test.
Note 7 : 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.
Note 8 : R DS(ON) guaranteed by correlation to wafer level measurement.
37035fa
3
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| LTC3703HGN#PBF | 功能描述:IC REG CTRLR BST PWM VM 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3703HGN#TRPBF | 功能描述:IC REG CTRLR BST PWM VM 16-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
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