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参数资料
| 型号： | LT1680ISW#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | 0.300 INCH, PLASTIC, SOP-16 |
| 文件页数： | 14/16页 |
| 文件大小： | 217K |
| 代理商： | LT1680ISW#TRPBF |
7
LT1680
RUN/SHDN (Pin 11): Precision Referenced Shutdown.
Can be used as logic level input for shutdown control or
as an analog monitor for input supply undervoltage
protection, etc. IC is enabled when RUN/SHDN pin rising
edge exceeds 1.25V. 25mV of hysteresis helps assure
stable mode switching. All internal functions are disabled
in shutdown mode. If this function is not desired, connect
RUN/SHDN to 12VIN (typically through a 100k resistor).
See Applications Information.
PGND (Pin 12): Power Ground. References the output
switch and internal driver control circuits. Connect with
low impedance trace to VIN decoupling capacitor negative
(ground) terminal.
GATE (Pin 13): Driver Output. Connect to gate of external
power FET switch.
12VIN (Pin 14): 12V Power Supply Input. Bypass with at
least 1
F to PGND.
SYNC (Pin 15): Oscillator Synchronization Pin with
TTL-Level Compatible Input. Input drives internal rising
edge triggered one shot; SYNC signal on/off times should
be
≥1s (10% to 90% duty cycle at 100kHz). Does not
contain internal pull-up. Connect to SGND if not used.
5VREF (Pin 16): 5V Reference Output. Allows connection
of external loads up to 10mA DC. Reference is not available
during shutdown. Typically bypassed with at least 1
F
capacitor to SGND.
REFERENCE
ONE SHOT
–
1.25V
Q
UVLO
CIRCUIT
SR
5VREF
5V
SYNC
GATE
SENSE +
SENSE –
IAVG
VIN
VOUT
RSENSE
12VIN
PGND
SGND
OSC
CT
RCT
CCT
VC
SL/ADJ
VREF
VFB
–
+
–
+
IC1
–
+
2.5V
1680 BD
–
+
EA
0.5
A
CURRENT
SENSE
AMPLIFIER
SS
1.25V
CIRCUIT
ENABLE
RUN/SHDN
+
RUN SHDN
8
A
SOFT START
12V
–
+
×15
VOUT
UU
U
PI FU CTIO S
BLOCK DIAGRA
W
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1681 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Transistor Synchronous Forward Controller |
| LT1681ESW | 功能描述:IC SYNCHRONOUS FWRD CTRLR 20SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LT1681ESW#PBF | 功能描述:IC SYNCHRONOUS FWRD CTRLR 20SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LT1681ESW#TR | 功能描述:IC SYNCHRONOUS FWRD CTRLR 20SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LT1681ESW#TRPBF | 功能描述:IC SYNCHRONOUS FWRD CTRLR 20SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
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