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参数资料
| 型号： | LTC3803ES6-3 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件页数： | 16/16页 |
| 文件大小： | 165K |
| 代理商： | LTC3803ES6-3 |
9
LTC3803-3
38033fa
OPERATIO
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Powering the LTC3803-3
In the simplest case, the LTC3803-3 can be powered from
a high voltage supply through a resistor. A built-in shunt
regulator from the VCC pin to GND will draw as much
current as needed through this resistor to regulate the VCC
voltage to around 9.5V as long as the VCC pin is not forced
to sink more than 25mA. This shunt regulator is always
active, even when the LTC3803-3 is in shutdown, since it
serves the vital function of protecting the VCC pin from
seeing too much voltage.
For higher efficiency or for wide VIN range applications,
flyback controllers are typically powered through a sepa-
rate bias winding on the flyback transformer. The
LTC3803-3 has a wide UVLO hysteresis (1V min) and
small VCC supply current draw (<90μA when VCC <
VTURNON) that is needed to support such bootstrapped
hysteretic start-up schemes.
The VCC pin must be bypassed to ground immediately
adjacent to the IC pins with a minimum of a 1
μF ceramic
or tantalum capacitor. Proper supply bypassing is neces-
sary to supply the high transient currents required by the
MOSFET gate driver.
Adjustable Slope Compensation
The LTC3803-3 injects a 5
μApeakcurrentrampoutthrough
its SENSE pin which can be used for slope compensation
in designs that require it. This current ramp is approximately
linear and begins at zero current at 8% duty cycle, reach-
ing peak current at 80% duty cycle. Additional details are
provided in the Applications Information section.
相关PDF资料 |
PDF描述 |
|---|---|
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| LTC3805MPMSE-5#PBF | SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO10 |
| LTC3827IG-1 | 3 A DUAL SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO28 |
| LTC3827IG-1#TR | 3 A DUAL SWITCHING CONTROLLER, 650 kHz SWITCHING FREQ-MAX, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3803ES6-3#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Flyback 6-Pin TSOT-23 Bulk 制造商:Linear Technology 功能描述:DC/DC CONTRLER FLYBACK 300KH 制造商:Linear Technology 功能描述:DC/DC CONTRLER, FLYBACK, 300KHZ, 6SOT23 |
| LTC3803ES6-3#TRMPBF | 功能描述:IC REG CTRLR FLYBK PWM TSOT23-6 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) |
| LTC3803ES6-3#TRPBF | 功能描述:IC REG CTRLR FLYBK PWM TSOT23-6 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) |
| LTC3803ES6-5 | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Flyback 5V Input 6-Pin TSOT-23 |
| LTC3803ES6-5#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Flyback 5V Input 6-Pin TSOT-23 Bulk |
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