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ACT4526 Dataheets PDF



Part Number ACT4526
Manufacturers Active-Semi
Logo Active-Semi
Description 40V/3.0A CV/CC Buck Converter
Datasheet ACT4526 DatasheetACT4526 Datasheet (PDF)

ACT4526 Rev 1.2, December 28th, 2015 40V/3.0A CV/CC Buck Converter Featuring QC2.0 Certified FEATURES  Qualcomm® Quick Charge™ 2.0 Certified  40V Input Voltage Surge  4.5V-36V Operational Input Voltage  5.1V/9.1V/12.1V Output with +/-1% Accuracy  Up to 3.0A Output current  Constant Current Regulation Limit  QC2.0 Decoding  Hiccup Mode Protection at Output Short  >90% Efficiency at Full Load  0.5mA Low Standby Input Current  5.7V/10.1V/13.5V Output Over-voltage Protection for 5.1V/9..

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ACT4526 Rev 1.2, December 28th, 2015 40V/3.0A CV/CC Buck Converter Featuring QC2.0 Certified FEATURES  Qualcomm® Quick Charge™ 2.0 Certified  40V Input Voltage Surge  4.5V-36V Operational Input Voltage  5.1V/9.1V/12.1V Output with +/-1% Accuracy  Up to 3.0A Output current  Constant Current Regulation Limit  QC2.0 Decoding  Hiccup Mode Protection at Output Short  >90% Efficiency at Full Load  0.5mA Low Standby Input Current  5.7V/10.1V/13.5V Output Over-voltage Protection for 5.1V/9.1V/12.1V Outputs  Cord Voltage Compensation  Meet EN55022 Class B Radiated EMI Standard  8kV ESD HBM Protection on DP and DM  SOP-8EP Package APPLICATIONS  Car Charger  Cigarette Lighter Adaptor (CLA)  Rechargeable Portable Device  CV/CC regulation DC/DC converter GENERAL DESCRIPTION ACT4526 is a wide input voltage, high efficiency step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. ACT4526 has QC2.0 decoding built in to provide 5.1V/9.1V/12.1V outputs as requested by attached portable devices. ACT4526 has accurate output current limits under constant current regulation to meet MFi specification. ACT4526 provides up to 3.0A output current at 125kHz switching frequency. ACT4526 utilizes adaptive drive technique to achieve good EMI performance while main >90% efficiency at full load for mini size CLA designs. It also has output short circuit protection with hiccup mode. The average output current is reduced to below 6mA when output is shorted to ground. Other features include output over voltage protection and thermal shutdown. ACT4526 is available in a SOP-8EP package and require very few external components for operation. Typical Application Circuit 4.5V to 40V C1 C2 47μF 10μF CSN HSB IN SW ACT4526 CSP GND DP DM C3 22nF Rcs 25mΩ L1 47μH D1 SK54L C4 C5 C6 22μF 220μF 2.2μF 5V/9V/12V Vout DD+ GND V/I Profile Innovative PowerTM Vout 12.1V 9.1V 5.1V 3.2V Iout 2.65A -1- www.active-semi.com Copyright © 2015 Active-Semi, Inc. ACT4526 Rev1.2, December 28th, 2015 ORDERING INFORMATION PART NUMBER ACT4526YH-T OPERATION TEMPERATURE RANGE PACKAGE FREQUENCY PACKING -40°C to 85°C SOP-8EP 125kHz TAPE & REEL PIN CONFIGURATION CSP 1 CSN 2 NC 3 DP 4 ACT4526 GND EP SOP-8EP Top View 8 HSB 7 SW 6 IN 5 DM Innovative PowerTM - 2 - www.active-semi.com Copyright © 2015 Active-Semi, Inc. PIN DESCRIPTIONS ACT4526 Rev1.2, December 28th, 2015 PIN NAME DESCRIPTION 1 CSP Voltage Feedback Input. Connect to node of the inductor and output capacitor. CSP and CSN Kevin sense is recommended. 2 CSN Negative input terminal of output current sense. Connect to the negative terminal of current sense resistor. 3 NC Not connected. 4 DP Data Line Positive Input. Connected to D+ of attached portable device data line. This pin passes 8kV HBM ESD. 5 DM Data Line Negative Input. Connected to D- of attached portable device data line. This pin passes 8kV HBM ESD. 6 IN Power Supply Input. Bypass this pin with a 10μF ceramic capacitor to GND, placed as close to the IC as possible. 7 SW Power Switching Output to External Inductor. 8 HSB High Side Bias Pin. This provides power to the internal high-side MOSFET gate driver. Connect a 22nF capacitor from HSB pin to SW pin. 9 GND Ground and Heat Dissipation Pad. Connect this exposed pad to large ground copper area with copper and vias. ABSOLUTE MAXIMUM RATINGS PARAMETER IN to GND SW to GND HSB to GND CSP, CSN to GND All other pins to GND Junction to Ambient Thermal Resistance Operating Junction Temperature Storage Junction Temperature Lead Temperature (Soldering 10 sec.) VALUE -0.3 to 40 -1 to VIN +1 VSW - 0.3 to VSW + 7 -0.3 to +15 -0.3 to +6 46 -40 to 150 -55 to 150 300 UNIT V V V V V °C/W °C °C °C : Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability. Innovative PowerTM - 3 - www.active-semi.com Copyright © 2015 Active-Semi, Inc. ELECTRICAL CHARACTERISTICS (VIN = 12V, TA = 25°C, unless otherwise specified.) ACT4526 Rev1.2, December 28th, 2015 Parameter Input Over Voltage Protection Symbol VIN_OVP Rising Condition Min Typ Max Units 40 42 44 V Input Over Voltage Hysteresis 4V Input Over Voltage Response Time T_VIN_OVP VIN step from 30V to 45V Input Under Voltage Lockout (UVLO) VIN Rising Input UVLO Hysteresis Input Voltage Power Good Deglitch Time No OVP Input Voltage Power Good Deglitch Time No UVP Input Standby Current Vin=12V, Vout=5.1V, Iload=0 250 ns 4.5 V 200 mV 40 ms 10 us 500 uA Output Voltage Regulation CSP 5.05 5.1 5.15 9.0 9.1 9.2 11.95 12.1 12.25 V Output Over Voltage Protection (OVP) Output Over Voltage Deglitch Time Output Voltage Cord Compensation Output Under Voltage Protection (UVP) UVP Hysteresis UVP Deglitch Time UVP Blanking Time at Startup Output Constant Current Limit Output rising VOUT VOUT VOUT Output current 2.4A VOUT falling .


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