Diodes AP1509-33SG-13 Buck Converter, 3.3V 2A Fixed, SOIC-8
Diodes AP1509-33SG-13 buck converter IC with 3.3V fixed output, 2A load capability, 4.5V to 22V input and SOIC-8 surface-mount package.
The Diodes AP1509-33SG-13 Buck Converter is a PWM step-down DC/DC converter IC with a fixed 3.3V output and 2A load capability.
Overview
The AP1509-33SG-13 is a monolithic pulse width modulation (PWM) buck converter designed to drive a 2A load directly, without requiring an external power transistor. This reduces the external component count on the PCB and simplifies the design.
Operating at a fixed switching frequency of 150 kHz, the regulator permits the use of smaller filter components compared with lower-frequency alternatives. An internal compensation network supports line and load regulation without the need for an external feedback loop design, helping to conserve board space.
Key Features and Protections
- Thermal shutdown to help prevent damage from excessive operating temperatures
- Current limit protection for the output switch during over-current conditions
- External shutdown control pin for placing the device into a low-power standby mode via a logic-level signal
- Internal compensation network
- Voltage mode, non-synchronous PWM control
Electrical Characteristics
The input voltage range is 4.5V to 22V. The fixed output voltage is regulated to 3.3V with a ±4% tolerance under specified conditions.
Applications
The IC is suited to power management applications where efficient step-down voltage conversion is required from a higher input supply. Its compact SOIC-8 surface-mount package suits space-constrained designs in consumer electronics, embedded systems, and industrial controls.
Handling
This device is electrostatic discharge (ESD) sensitive.
- Consumer electronics
- Embedded systems
- Industrial controls
- Space-constrained designs
- Output Voltage: 3.3V (Fixed)
- Output Current: 2A
- Switching Frequency: 150 kHz
- Input Voltage Range: 4.5V to 22V
- Output Voltage Tolerance: ±4% under specified conditions
- Topology: Non-synchronous PWM step-down (buck) DC/DC converter
- Control Method: Voltage mode PWM
- Package: SOIC-8 surface-mount
- Special Feature: Internal compensation network
- Special Feature: Thermal shutdown
- Special Feature: Current limit protection
- Special Feature: External shutdown control pin for low-power standby mode
- Weight: 0.074 gm
Documents
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