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English内置功率MOSFET降压控制器,降压控制器PT1102
PT1102_DS Rev EN_1.1
PT1102
GENERAL DESCRIPTION
The PT1102 is a CMOS-based fixed frequency step-down DC/
DC converter with a built-in internal power MOSFET. It
achieves 1A continuous output
current over a wide input supply range with excellent load and line regulation. It requires a
minimum number of readily available external components to complete a 1A step down DC to DC converter solution with
low ripple and high efficiency. The output voltage can be adjusted with external resisters.
With the enhanced voltage mode operation, t
he PT1102 achieves good loop stability wi
th wide operating range. Under light
load conditions, the PT1102 automatical
ly switches to a VFM mode to improve efficiency. Fault condition protection
includes current limiting and thermal shutdown. Furthermore, t
he PT1102 has a built-in UVLO
function that prevents the
output from being unstable when the
input voltage becomes too low.
The PT1102 is available in SOP8 packages.
FEATURES
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Wide Range Of Input Voltage: 2.5V
~
18V
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Oscillation Frequency: 500kHz
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Standby Current: Typical 0.1μA
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High Efficiency: Typical 88%
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Low Temp. Coefficient of Feedback Voltage:
Typical ±100ppm/
°C
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Built-in Soft-start and UVLO
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Thermal Shutdown
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Package: SOP-8
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RoHS compliant
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