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| 型号： | LTC3803IS6#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK PWM TSOT23-6 |
| 标准包装： | 500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 240kHz |
| 占空比： | 90% |
| 电源电压： | 5.7 V ~ 8 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 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： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 相关产品： | 732-2263-6-ND - TRANS FLYBACK LTC3803 16.9UH 732-2263-1-ND - TRANS FLYBACK LTC3803 16.9UH 732-2263-2-ND - TRANS FLYBACK LTC3803 16.9UH |
| 其它名称： | LTC3803IS6#PBF LTC3803IS6#PBF-ND |
LTC3803
ELECTRICAL CHARACTERISTICS
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 LTC3803 is tested under pulsed load conditions such that T J ≈ T A .
The LTC3803E is guaranteed to meet speci?cations from 0°C to 85°C
junction temperature. Speci?cations over the –40°C to 125°C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls. The LTC3803I is guaranteed to
meet performance speci?cations over the –40°C to 125°C operating junction
temperature range, the LTC3803H is guaranteed to meet performance
speci?cations over the –40°C to 150°C operating junction temperature range
and the LTC3803MP is tested and guaranteed over the full –55°C to 150°C
operating junction temperature range. High junction temperatures degrade
operating lifetimes; operating lifetime is derated for junction temperatures
greater than 125°C. Note that the maximum ambient temperature consistent
with these speci?cations is determined by speci?c operating conditions in
conjunction with board layout, the rated package thermal impedance and
other environmental factors.
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 ? 230°C/W).
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: The LTC3803 is tested in a feedback loop that servos V FB to the
output of the error ampli?er while maintaining I TH /RUN at the midpoint of
the current limit range.
Note 6: Peak current sense voltage is reduced dependent on duty cycle
and an optional external resistor in series with the SENSE pin (R SL ). For
details, refer to the programmable slope compensation feature in the
Applications Information section.
Note 7: Guaranteed by design.
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage
Reference Voltage
Reference Voltage vs Temperature
vs Supply Voltage
vs V CC Shunt Regulator Current
820
815
V CC = 8V
801.0
800.8
T A = 25°C
V CC ≤ V CLAMP1mA
804
803
T A = 25°C
800.6
810
805
800
795
790
785
800.4
800.2
800.0
799.8
799.6
799.4
799.2
802
801
800
799
798
797
780
–60
–30
0
30
60
90
120
150
799.0
6
6.5
7
7.5
8
8.5
9
9.5
796
0
5
10
15
20
25
TEMPERATURE (°C)
Oscillator Frequency
vs Temperature
3803 G01
V CC SUPPLY VOLTAGE (V)
Oscillator Frequency
vs Supply Voltage
3803 F02
I CC (mA)
3803 G03
Oscillator Frequency
vs V CC Shunt Regulator Current
240
V CC = 8V
210
208
T A = 25°C
210
208
T A = 25°C
230
220
210
200
190
206
204
202
200
198
196
194
192
206
204
202
200
198
196
194
192
180
–60
–30
0
30
60 90
120
150
190
6
6.5
7
7.5 8
8.5
9
190
0
5
10
15
20
25
TEMPERATURE (°C)
3803 G04
V CC SUPPLY VOLTAGE (V)
3803 G05
I CC (mA)
3803 G06
3803fc
4
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