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AP1509

150kHz, 2A PWM BUCK DC-DC CONVERTER

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Description

The AP1509 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 2A load without additional transistor. It saves board space. The external shutdown function can be control°C by logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurs and VFB is down below 0.5V, the switching frequency will be reduced. The AP1509 series operates at a switching frequency of 150KHz thus allow smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The chips are available in a standard 8-lead SO-8 package.

Application(s)

  • Simple High-Efficiency Step-Down Regulator
  • On-Card Switching Regulators
  • Positive to Negative Converter

Product Specifications

Product Parameters

Type Buck
Efficiency (%) 90 %
HS RDS(ON) (mΩ) N/A mΩ
LS RDS(ON) (mΩ) N/A mΩ
Frequency Typ (Hz) 150 kHz
MinimumInput Voltage (V) 4.5 V
MaximumInput Voltage (V) 22 V
Output Current (mA) 2 A
Output Voltage (V) 12, 5, 3.3, 1.23 to 18 V
Quiescent Current Typ (mA) 5 mA
Shutdown Current Typ (µA) 70 µA

Related Content

Packages

Technical Documents

Application Notes

Evaluation Boards and User Guides

Recommended Soldering Techniques

TN1.pdf

Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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Qty. Carrier
AP1509-12SG-13 Obsolete SO-8 TPGP 2500 T&R
AP1509-12SL-13 Obsolete SO-8 TPGP 2500 T&R
AP1509-33SG-13 Not Recommended for New Design (NRND) SO-8 GREEN 2500 T&R

AP1509-33SG-13

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
RS Components - Spain 4820 1/24/2022 Spain Contact Sales
RS Components - UK 4820 1/24/2022 England Buy Now
AP1509-50SG-13 Active SO-8 TPGP 2500 T&R

AP1509-50SG-13

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow Electronics 1942 1/24/2022 United States Buy Now
Digi-Key Electronics 18840 1/24/2022 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 2388 1/24/2022 England Buy Now
Mouser Electronics Inc. 654 1/24/2022 South America, North America, Asia, Europe, Middle East Buy Now
RS Components - France 55 1/24/2022 France Buy Now
RS Components - Spain 165 1/24/2022 Spain Contact Sales
RS Components - Spain 805 1/24/2022 Spain Contact Sales
RS Components - UK 165 1/24/2022 England Buy Now
RS Components - UK 805 1/24/2022 England Buy Now
Request Sample
AP1509-SG-13 Not Recommended for New Design (NRND) SO-8 TPGP 2500 T&R

AP1509-SG-13

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 262 1/24/2022 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 1203 1/24/2022 England Buy Now
Mouser Electronics Inc. 154 1/24/2022 South America, North America, Asia, Europe, Middle East Buy Now

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free

PCNs

Product Change Notices

PCN # Issue Date Implementation Date Subject
PCN-2427 2019-10-15 2020-04-15 Device End of Life (EOL)