参数资料
| 型号： | LT1683EG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/26页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM CM 20-SSOP |
| 标准包装： | 66 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 250kHz |
| 占空比： | 46% |
| 电源电压： | 4 V ~ 20 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 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： | 20-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1328 (CN2011-ZH PDF) |
LT1683
OPERATION
There is also an on-chip thermal shutdown circuit that will
turn off the outputs in the event the chip temperature rises
to dangerous levels. Thermal shutdown has hysteresis that
will cause a low frequency (<1kHz) oscillation to occur as
the chip heats up and cools down.
The chip has an undervoltage lockout feature that will
force the gate drivers low in the event that V IN drops below
Table 1. Safety and Protection Features
2.5V. This ensures predictable behavior during start-up
and shutdown. SHDN can be used in conjuction with an
external resistor divider to completely disable the part if
the input voltage is too low. This can be used to ensure
adequate voltage to reliably run the converter. See the
section in Applications Information.
Table 1 summarizes these features.
FEATURE
Maximum Current Fault
Short-Circuit Fault
Overvoltage Fault
GCL Clamp
Gate Drive
Undervoltage Lockout
Thermal Shutdown
Opposite Gate Lockout
V IN Undervoltage Lockout
FUNCTION
Turn Off FETs at Maximum
Switch Current (V SENSE = 0.1)
Turn Off FETs and Reset V C
for Short-Circuit (V SENSE = 0.2)
Turn Off Drivers If FB > V REG + 0.22V
(Output Overvoltage)
Set Max Gate Voltage to Prevent
FET Gate Breakdown
Disable Gate Drives When V IN
Is Too Low. Set Via GCL Pin
Turn Off Drivers If Chip
Temperature Is Too Hot
Prevents Opposite Driver from
Turning on Until Driver Is Off
(Cross Conduction in Transformer)
Disable Part When V IN ? 2.55V
EFFECT ON GATE DRIVERS
Immediately Goes Low
Immediately Goes Low
Immediately Goes Low
Limits Max Voltage
Immediately Goes Low
Immediately Goes Low
Inhibits Turn On of
Opposite Driver
Immediately Goes Low
SLEW CONTROL
Overridden
Overridden
Overridden
None
Overridden
Overridden
None
Overridden
EFFECT ON VC, SS
None
Discharge V C , SS
to GND
None
None
None
None
None
None
Gate Drive Source and Sink Current Limit Limit Gate Drive Current
Limit Drive Current
None
None
V5 Source/Sink Current Limit
Limit Current from V5
None
None
None
Shutdown
Disable Part When SHDN <1.3V
1683fd
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1683IG | 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 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:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT1683IG#PBF | 功能描述:IC REG CTRLR PWM CM 20-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:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 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:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT1683IG#TR | 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 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:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT1683IG#TRPBF | 功能描述:IC REG CTRLR PWM CM 20-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:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 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:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT1684 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Ring Tone Generator |
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