Diodes Incorporated AP3211
The AP3211 is a 1.4MHz fixed frequency, current mode, PWM buck (step-down) DC-DC converter, capable of driving a 1.5A load with high efficiency, excellent line and load regulation. The device integrates N-channel power MOSFET switch with low on-resistance. This feature greatly simplifies the design of switch-mode power supplies.| Part No. | AP3211 |
|---|---|
| Datasheet | AP3211 Download |
| Manufacturer |  Diodes Incorporated |
| Description | 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER |
| Buy | Stock & Price |
DESCRIPTION
Current mode control provides fast transient response and cycle-bycycle current limit. A standard series of inductors are available from several different manufacturers optimized for use with the AP3211. The AP3211 is available in SOT-23-6 package. Pin Assignments (Top View) Pin 1 Mark BS 1 GND 2 6 SW 5 INFEATURES
● Input Voltage Range: 4.5V to 18V● Output Voltage Adjustable from 0.81V to 15V
● Fixed 1.4MHz Frequency
● High Efficiency: up to 92%
● Output Current: 1.5A
● Current Mode Control
● Built-In Over Current Protection
● Built-In Thermal Shutdown Function
● Built-In UVLO Function
● Built-In Over Voltage Protection
● Built-In Soft-Start FB 3 4 EN
APPLICATIONS
● LCD TV● DPF
● Portable DVD SOT-23-6 Typical
APPLICATIONS
Circuit AP3211 VIN=12V IN BS 10mF C1 25V SW ON OFF EN FB GND CB 10nF L1 4.7mH D1 R1 C2 49.9k VOUT=3.3V (1.5A) 22mF 6.3V R2 16.3k AP3211 Document number: DS41396 Rev. 2 - 2 1 of 11 September 2018 © Diodes Incorporated AP3211 Pin Descriptions Pin Number 1 2 3 Pin Name BS GND FB 4 EN 5 IN 6 SW Function Bootstrap pin.
