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参数资料
| 型号： | LT3800EFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR INV PWM CM 16-TSSOP |
| 标准包装： | 95 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 220kHz |
| 占空比： | 95% |
| 电源电压： | 4 V ~ 60 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 是 |
| 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： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
LT3800
TYPICAL PERFORMANCE CHARACTERISTICS
V CC UVLO Threshold (Rising)
vs Temperature
I CC vs V CC ( SHDN = 0V)
Error Amp Transconductance
vs Temperature
6.30
25
T A = 25°C
380
20
6.25
6.20
15
10
5
360
340
6.15
–50
–25
0
25
50
75
100
125
0
0
2
4
6
8
10 12 14 16 18 20
320
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
3800 G07
I (SENSE+ + SENSE–) vs V SENSE(CM)
V CC (V)
Operating Frequency
vs Temperature
3800 G12
TEMPERATURE (°C)
Error Amp Reference
vs Temperature
3800 G08
800
600
T A = 25°C
220
1.232
1.231
210
400
1.230
200
200
1.229
0
–200
190
1.228
–400
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
180
–50
–25
0
25
50
75
100
125
1.227
–50
–25
0
25
50
75
100
125
V SENSE(CM) (V)
PIN FUNCTIONS
3800 G09
TEMPERATURE (°C)
3800 G10
TEMPERATURE (°C)
3800 G11
V IN (Pin 1): Converter Input Supply.
NC (Pin 2): No Connection.
SHDN (Pin 3): Precision Shutdown Pin. Enable threshold
is 1.35V (rising) with 120mV of input hysteresis. When
in shutdown mode, all internal IC functions are disabled.
The precision threshold allows use of the SHDN pin to
incorporate UVLO functions. If the SHDN pin is pulled
below 0.7V, the IC enters a low current shutdown mode
with I VIN < 10μA. In low-current shutdown, the IC will
sink 20μA from the V CC pin until that local supply has
collapsed. Typical pin input bias current is <10nA and the
pin is internally clamped to 6V.
C SS (Pin 4): Soft-Start AC Coupling Capacitor Input.
Connect capacitor (C SS ) in series with a 200k resistor
from pin to converter output (V OUT ). Controls converter
start-up output voltage slew rate ( ? V OUT / ? t). Slew rate
corresponds to 2μA average current through the soft-start
coupling capacitor. The capacitor value for a desired output
startup slew rate follows the relation:
C SS = 2μA/( ? V OUT / ? t)
Shorting this pin to SGND disables the soft-start function
BURST_EN (Pin 5): Burst Mode Operation Enable Pin.
This pin also controls reverse-inhibit mode of operation.
When the pin voltage is below 0.5V, Burst Mode operation
3800fc
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3800EFE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High-Voltage Synchronous Current Mode Step-Down Controller |
| LT3800IFE | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 60V 16-Pin TSSOP EP |
| LT3800IFE#PBF | 功能描述:IC REG CTRLR INV PWM CM 16-TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LT3800IFE#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-DOWN REGULATOR CTRL 16-TSSO |
| LT3800IFE#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 4V to 60V 16-Pin TSSOP EP T/R |
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