参数资料
| 型号： | LT3013HFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .2A 16-TSSOP |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 95 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.24 V ~ 60 V |
| 输入电压： | 4 V ~ 80 V |
| 电压 - 压降（标准）： | 0.36V @ 200mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 200mA |
| 电流 - 限制（最小）： | 200mA |
| 工作温度： | -40°C ~ 140°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 管件 |
LT3013
PIN FUNCTIONS
(DFN Package)/(TSSOP Package)
NC (Pins 1, 9, 12)/(Pins 2, 12, 15): No Connect. These
pins have no internal connection; connecting NC pins
to a copper area for heat dissipation provides a small
improvement in thermal performance.
OUT (Pins 2, 3)/(Pins 3, 4): Output. The output supplies
power to the load. A minimum output capacitor of 3.3μF is
required to prevent oscillations. Larger output capacitors
will be required for applications with large transient loads
to limit peak voltage transients. See the Applications
Information section for more information on output
capacitance and reverse output characteristics.
ADJ (Pin 4)/(Pin 5): Adjust. This is the input to the error
ampli?er. This pin is internally clamped to ±7V. It has a
bias current of 30nA which ?ows into the pin (see curve
of ADJ Pin Bias Current vs Temperature in the Typical
Performance Characteristics). The ADJ pin voltage is
1.24V referenced to ground, and the output voltage range
is 1.24V to 60V.
GND (Pins 5, 13)/(Pins 1, 6, 8, 9, 16, 17): Ground. The
exposed backside of the package is an electrical connection
for GND. As such, to ensure optimum device operation and
thermal performance, the exposed pad must be connected
directly to Pin 5/Pin 6 on the PC board.
PWRGD (Pin 6)/(Pin 7): Power Good. The PWRGD ?ag is
an open collector ?ag to indicate that the output voltage
has come up to above 90% of the nominal output voltage.
There is no internal pull-up on this pin; a pull-up resistor
must be used. The PWRGD pin will change state from an
open-collector to high impedance after both the output is
above 90% of the nominal voltage and the capacitor on
SHDN (Pin 8)/(Pin 11): Shutdown. The SHDN pin is used
to put the LT3013 into a low power shutdown state. The
output will be off when the SHDN pin is pulled low. The
SHDN pin can be driven either by 5V logic or open-collector
logic with a pull-up resistor. The pull-up resistor is only
required to supply the pull-up current of the open-collector
gate, normally several microamperes. If unused, the SHDN
pin must be tied to a logic high or V IN .
C T (Pin 7)/(Pin 10): Timing Capacitor. The C T pin allows
the use of a small capacitor to delay the timing between
the point where the output crosses the PWRGD threshold
and the PWRGD ?ag changes to a high impedance state.
Current out of this pin during the charging phase is
3μA. The voltage difference between the PWRGD low
and PWRGD high states is 1.6V (see the Applications
Information Section).
IN (Pins 10, 11)/(Pins 13,14): Input. Power is supplied
to the device through the IN pin. A bypass capacitor is
required on this pin if the device is more than six inches
away from the main input ?lter capacitor. In general, the
output impedance of a battery rises with frequency, so it is
advisable to include a bypass capacitor in battery-powered
circuits. A bypass capacitor in the range of 1μF to 10μF is
suf?cient. The LT3013 is designed to withstand reverse
voltages on the IN pin with respect to ground and the OUT
pin. In the case of a reversed input, which can happen if
a battery is plugged in backwards, the LT3013 will act as
if there is a diode in series with its input. There will be
no reverse current ?ow into the LT3013 and no reverse
voltage will appear at the load. The device will protect both
itself and the load.
the CT pin has charged through a 1.6V differential. The
maximum pull-down current of the PWRGD pin in the low
state is 50μA.
3013fe
11
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