White LED Step-Up ConverterWhite LED Step-up Converter,The PT4101 is a Step-up DC/DC converter
designed for driving up to 5 white LEDs in series
from a single cell Lithium Ion battery with
constant current. Because it directly regulates
output current, the PT4101 is ideal for driving
light Emitting Diodes (LEDs) whose light intensity
is proportional to the current passing through
them, not the voltage across their terminals. A
single external resistor sets LED current
between 2mA and 20mA, which CAN then be
easily adjusted using either a DC voltage or a
pulse width modulated (PWM) signal up to
100KHz. Its low 104mV feedback voltage
reduces power loss and improves efficiency. The
OV pin monitors the output voltage and turns off
the converter if an over-voltage condition is
present due to an open circuit condition. The
PT4101 is available in SOT23-6 packages. By China Resources Powtech (Shanghai) Co., Ltd
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| Part | Manufacturer | Description | Datasheet | Samples | |
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| PT4101C | Texas Instruments | 1-OUTPUT 15W DC-DC REG PWR SUPPLY MODULE, SURFACE MOUNT PACKAGE-6 |
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| PT4101A | Texas Instruments | 1-OUTPUT 15W DC-DC REG PWR SUPPLY MODULE, THROUGH-HOLE PACK, 6 PIN |
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| PT4101CT | Texas Instruments | 1-OUTPUT 15W DC-DC REG PWR SUPPLY MODULE, PLASTIC, DIP-6 |
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| PT4101 Pb-Free | PT4101 Cross Reference | PT4101 Schematic | PT4101 Distributor |
| PT4101 Application Notes | PT4101 RoHS | PT4101 Circuits | PT4101 footprint |
