ap1534 Diodes, Inc., ap1534 Datasheet
ap1534
Available stocks
Related parts for ap1534
ap1534 Summary of contents
Page 1
... AP1534 consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS. AP1534 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 99%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup ...
Page 2
... Add an external resistor to set max output current power supply pin CC Switch Pin. Connect external inductor/diode here. Minimize Output 5, 6 trace area at this pin to reduce EMI GND Pin SS AP1534 Rev. 2 PWM CONTROL 2A STEP-DOWN CONVERTER Vss Vss AP1534 3 6 Output ...
Page 3
... Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Recommended Operating Conditions Symbol V Input Voltage IN I Output Current OUT T Operating Ambient Temperature A AP1534 Rev. 2 PWM CONTROL 2A STEP-DOWN CONVERTER Output Oscillation Reference Voltage Circuit PWM-Switched Control Circuit 100uA V EN OCSET EN ...
Page 4
... Typical Application Circuit OCSET OCSET 5.6K Option C IN 470uF R EN CVcc 100K 0.1uF C EN 0.1uF Note: 4. Suggested DIODES Power Schottky P/N: B240/B340 series. AP1534 Rev. 2 PWM CONTROL 2A STEP-DOWN CONVERTER ( V = 12V 25°C, unless otherwise specified ) IN A Conditions I = 0.1A OUT I = 0.1A OUT -- 5V~18V ...
Page 5
... I =0.2A) OUT OUT 3.0% 2.0% 1.0% 0.0% -1.0% -2.0% -3. (V) IN Efficiency 100 0.0 0.5 1.0 I (A) OUT AP1534 Rev. 2 PWM CONTROL 2A STEP-DOWN CONVERTER 0.820 0.815 0.810 0.805 0.800 0.795 0.790 0.785 0.780 1.0% 0.8% 0.6% 0.4% 0.2% 0.0% -0.2% -0.4% -0.6% -0.8% -1. 0.0 VOUT=3.3V VOUT=5V 1.5 2 www.diodes.com AP1534 ...
Page 6
... Vout=3.3V, Iout=0.1A) Test Circuit open OUTPUT V CC OCSET Enable function test OUTPUT V CC OCSET + Operation function test AP1534 Rev. 2 PWM CONTROL 2A STEP-DOWN CONVERTER (Continued) (Vin=5V, Vout=3.3V, Iout=2A) open www.diodes.com AP1534 Vout Ripple OUTPUT OCSET ...
Page 7
... Under Voltage Lockout The under voltage lockout circuit of the AP1534 assures that the high-side MOSFET driver remains in the off state whenever the supply voltage drops below 3.3V. Normal operation resumes once V rises above 3 ...
Page 8
... Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP1534 Rev. 2 PWM CONTROL 2A STEP-DOWN CONVERTER (All Dimensions in mm) Detail " ...