{"product_id":"ap1534-ap1534sg-13-step-down-pwm-switching-regulator-sop8-4-75-23v-1-5a-5pack","title":"AP1534 \/ AP1534SG-13 Step-Down PWM Switching Regulator — SOP-8, 4.75–23V, 1.5A (5-Pack)","description":"\u003ch2\u003eAP1534 \/ AP1534SG-13 Step-Down PWM Switching Regulator — SOP-8, 4.75–23V, 1.5A (5-Pack)\u003c\/h2\u003e\u003cp\u003eThe AP1534 (AP1534SG-13) is a current-mode PWM step-down (buck) switching regulator IC in a SOP-8 SMD package. Operating from 4.75V to 23V input with up to 1.5A output current and 90% peak efficiency at 150kHz switching frequency, it is a compact and efficient solution for DC-DC voltage step-down in consumer electronics, industrial equipment, and embedded power supply designs. The internal 1.5A switch eliminates the need for an external power transistor.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOP-8 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e4.75V – 23V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e1.5A (internal switch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Frequency\u003c\/td\u003e\n\u003ctd\u003e150kHz (fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Efficiency\u003c\/td\u003e\n\u003ctd\u003e~90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003eAdjustable (external resistor divider)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Voltage\u003c\/td\u003e\n\u003ctd\u003e1.25V (internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOCP, thermal shutdown, soft-start\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose AP1534?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.75–23V input range\u003c\/strong\u003e — covers 5V USB, 9V, 12V, and 19V laptop adapter inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5A internal switch\u003c\/strong\u003e — no external power transistor needed for loads up to ~1A output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90% peak efficiency\u003c\/strong\u003e — significantly less heat than linear regulators (LM7805, LM317) at the same voltage\/current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150kHz switching\u003c\/strong\u003e — allows compact inductor and capacitor values\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOP-8 compact package\u003c\/strong\u003e — minimal PCB footprint for space-constrained designs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAP1534 vs Common Alternatives\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eIC\u003c\/th\u003e\n\u003cth\u003eInput Voltage\u003c\/th\u003e\n\u003cth\u003eOutput Current\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003ePackage\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAP1534\u003c\/td\u003e\n\u003ctd\u003e4.75–23V\u003c\/td\u003e\n\u003ctd\u003e1.5A\u003c\/td\u003e\n\u003ctd\u003e150kHz\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLM2596\u003c\/td\u003e\n\u003ctd\u003e4.5–40V\u003c\/td\u003e\n\u003ctd\u003e3A\u003c\/td\u003e\n\u003ctd\u003e150kHz\u003c\/td\u003e\n\u003ctd\u003eTO-263\/DIP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMP2307\u003c\/td\u003e\n\u003ctd\u003e4.75–23V\u003c\/td\u003e\n\u003ctd\u003e3A\u003c\/td\u003e\n\u003ctd\u003e340kHz\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eXL4005\u003c\/td\u003e\n\u003ctd\u003e5–32V\u003c\/td\u003e\n\u003ctd\u003e5A\u003c\/td\u003e\n\u003ctd\u003e300kHz\u003c\/td\u003e\n\u003ctd\u003eSOP-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatible With \/ Common Use Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V to 5V buck\u003c\/strong\u003e: Power Arduino, Raspberry Pi, or ESP32 from 12V supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19V laptop adapter to 12V\u003c\/strong\u003e: Step down laptop charger output for 12V peripherals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9V to 3.3V\u003c\/strong\u003e: Two-stage regulation (9V→5V→3.3V) for MCU power supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial 24V to 5V\u003c\/strong\u003e: Logic supply from 24V industrial rail (note: 23V max input)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCB repair\u003c\/strong\u003e: Replacement for failed SOP-8 buck regulator ICs on consumer electronics boards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I set the output voltage for AP1534?\u003c\/strong\u003e\u003cbr\u003eA: Use a resistor divider from Vout to the feedback (FB) pin to GND. Vout = 1.25V × (1 + R1\/R2). For 5V output: R1=30kΩ, R2=10kΩ gives Vout = 1.25 × 4 = 5V. For 3.3V: R1=16.2kΩ, R2=10kΩ gives Vout ≈ 3.3V. Use 1% tolerance resistors for accurate output voltage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What inductor value should I use with AP1534?\u003c\/strong\u003e\u003cbr\u003eA: For 12V input, 5V output, 1A load at 150kHz: L = (Vin − Vout) × D \/ (f × ΔIL) where D = Vout\/Vin = 0.42, ΔIL = 30% of Iout = 0.3A. L ≈ (12−5) × 0.42 \/ (150kHz × 0.3A) ≈ 65μH. Use a 68μH or 100μH shielded inductor rated for ≥1.5A.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can AP1534 replace LM2596 in an existing design?\u003c\/strong\u003e\u003cbr\u003eA: The AP1534 has the same 150kHz switching frequency and similar topology as LM2596, but different pinout and lower max input voltage (23V vs 40V). Do not substitute directly without verifying pinout compatibility and input voltage requirements.\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× AP1534 \/ AP1534SG-13 Step-Down PWM Switching Regulator IC (SOP-8)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991459975403,"sku":"\u003cnone\u003e","price":6.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ap1534-ap1534sg-13-sop-8-voltage-regulator-ic-chipset.webp?v=1761794975","url":"https:\/\/keszoox.com\/products\/ap1534-ap1534sg-13-step-down-pwm-switching-regulator-sop8-4-75-23v-1-5a-5pack","provider":"Keszoox","version":"1.0","type":"link"}