LT1761ES5-2.8#TRMPBF Linear Technology, LT1761ES5-2.8#TRMPBF Datasheet - Page 13

• Manufacturer Part Number: LT1761ES5-2.8#TRMPBF
• Description: IC LDO REG 100MA 2.8V TSOT23-5
• Manufacturer: Linear Technology

Specifications of LT1761ES5-2.8#TRMPBF

• Regulator Topology: Positive Fixed
• Voltage - Output: 2.8V
• Voltage - Input: Up to 20V
• Voltage - Dropout (typical): 0.3V @ 100mA
• Number Of Regulators: 1
• Current - Output: 100mA
• Current - Limit (min): 110mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Primary Input Voltage: 3.8V
• Output Voltage Fixed: 2.8V
• Dropout Voltage Vdo: 300mV
• No. Of Pins: 5
• Output Current: 100mA
• Voltage Regulator Case Style: SOT-23
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LT1761ES5-2.8#PBF; LT1761ES5-2.8#PBF; LT1761ES5-2.8#TRMPBF; LT1761ES5-2.8#TRMPBFTR

PI FU CTIO S
IN (Pin 1): 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
filter 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 sufficient. The
LT1761 regulators are designed to withstand reverse
voltages on the IN pin with respect to ground and the OUT
pin. In the case of a reverse input, which can happen if a
battery is plugged in backwards, the device will act as if
there is a diode in series with its input. There will be no
reverse current flow into the regulator and no reverse
voltage will appear at the load. The device will protect both
itself and the load.
GND (Pin 2): Ground.
SHDN (Pin 3, Fixed/-SD Devices): Shutdown. The SHDN
pin is used to put the LT1761 regulators 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 required to supply the pull-up current of
the open-collector gate, normally several microamperes,
and the SHDN pin current, typically 1μA. If unused, the
SHDN pin must be connected to V
U
U
U
IN
. The device will not
function if the SHDN pin is not connected. For the
LT1761-BYP, the SHDN pin is internally connected to V
BYP (Pins 3/4, Fixed/-BYP Devices): Bypass. The BYP
pin is used to bypass the reference of the LT1761 regula-
tors to achieve low noise performance from the regulator.
The BYP pin is clamped internally to ±0.6V (one V
ground. A small capacitor from the output to this pin will
bypass the reference to lower the output voltage noise. A
maximum value of 0.01μF can be used for reducing output
voltage noise to a typical 20μV
bandwidth. If not used, this pin must be left unconnected.
ADJ (Pin 4, Adjustable Devices Only): Adjust Pin. For the
adjustable LT1761, this is the input to the error amplifier.
This pin is internally clamped to ±7V. It has a bias current
of 30nA which flows into the pin (see curve of ADJ Pin Bias
Current vs Temperature in the Typical Performance Char-
acteristics section). The ADJ pin voltage is 1.22V referenced
to ground and the output voltage range is 1.22V to 20V.
OUT (Pin 5): Output. The output supplies power to the
load. A minimum output capacitor of 1μF 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.
RMS
LT1761 Series
over a 10Hz to 100kHz
BE
13
) from
1761sfc
IN
.